The opportunity:

Flexport is a platform for global trade in an industry that comprises 12% of the global GDP.  We are the first licensed freight forwarder and customs brokerage built around a modern tech stack.  We help the world's fastest-growing brands manage their international supply chains, providing a fully-managed service for moving products between any two places on the planet.

Exceptional software development is integral in allowing us to fulfill our mission of fixing the user experience in global trade. At Flexport you’ll develop products that are at the forefront of reshaping the entire logistics & supply chain industries. You’ll work alongside self-starters interested in solving real-world problems and streamlining the inefficiencies in the complex global trade industry. You’ll have the opportunity to reshape an industry by creating the new operating system for global trade.

Our engineers are top-notch software developers who love listening to the users, working as a team, and proactively taking the lead whenever necessary. The role involves learning the business of freight forwarding, modeling the work that people do to move freight, designing solutions to make it more efficient, and thinking innovatively to automate much of it. In this role, you will have an opportunity to own the design and development of key parts of our forwarding systems. You will have influence on subsystem design and help contribute to a team culture around practices that are critical to a quality product. 

About the team:

We have multiple teams in Shanghai and Shenzhen working on a suite of core products and services that enable Flexport operation to scale, including Forwarding Application, Client Application, Shipper Application, WMS, Consol Planning Tool, Document Platform (AI empowered), Email Platform, Compliance Platform, Work Assignment Engine, Exception Management, AI Copilot, Insight Builder (AI Data Analytics) and so on. 

In addition, we have a NAWS (Native AWS) team that develops infrastructure solutions for our products and services using the latest Infrastructure as Code (IaC) technology: CDKTF (Cloud Development Kit for Terraform). Our scope includes, but is not limited to, CI/CD, observability, DevX, data subsetting (TS3), IaC, template engines, and various open-source projects. Additionally, the team provides technical guidance to engineers across the organization.

We are looking for engineers who love learning, are passionate about collaborating, and desire to build solutions with a global impact.

You will:

• Build highly available, secure, distributed systems in a microservice architecture.
• Build cutting edge infrastructure solutions to help improve development experience across the company. And, work closely with other engineering teams to help them solve infrastructure related problems.
• Design, develop, test and maintain systems that represent the real-world intricacies of logistics entities, such as shipper, client, cargo, document, carrier, container, email etc.
• Collaborate with some of the best engineers in the industry to work on complex business and technical problems.
• Work closely with business partners and product managers to distill complex business problems into elegant technical solutions.
• Build and launch products rapidly and incrementally. We ship to production dozens of times per day.
• Ensure our products maintain a high-quality bar. We believe in anticipating issues by obsessing over metrics and applying key learnings from post-mortems to all our services.
• Geek out about shipping and logistics. (We do this often.)

You should have:

Basic Qualifications

• 3+ years of experience writing software, and a strong engineering background.
• 2+ years of design and architecture knowledge as well as familiarity with object-oriented analysis and design patterns (OOA/OOD)
• Knowledge of at least one programming language such as TypeScript, Ruby, C, C++, Java, or Kotlin
• Bachelor's degree in Computer Science or related technical field, or equivalent experience

Preferred Qualifications

• A love of simple, well-tested code that is easy to extend and hard to break.
• A bias for action. When you see a problem, you solve it.
• The ability to convey technical ideas in common terms to business partners, product managers, and engineers alike.
• Experience building large scale, high-performance systems in a complex, multi-tiered, distributed environment
• Understanding of performance tradeoffs, load balancing and operational issues
• Knowledge of professional software engineering practices & best practices for full software development life cycle, including coding standards, code reviews, source control management, continuous deployments, testing, and operations
• Experience with Infrastructure as Code (IaC) tools such as CDKTF, Terraform, AWS CloudFormation, or similar.
• Having basic concepts in AWS services, including IAM, EC2, ECS, S3, Lambda, Step Functions, EventBridge, and VPC, or equivalent services from other cloud providers.
• Familiarity with CI/CD pipelines, infrastructure automation, and monitoring/observability tools.
• Ability to troubleshoot and optimize distributed systems and cloud deployments.
• Non-optional: an aptitude for learning quickly.

Engineering Culture and Values:

• Check out our Key Values profile.

#LI-onsite

NOTE: NO VISA SUPPORT

The Community You Will Join:

The Global Markets Tech team drives the evolution of our guest and host experience across international markets through product innovation that accelerates international growth. Expanding in under-penetrated markets is a core pillar of our company strategy. To achieve this, we innovate at every level - adapting our  product to the unique needs of every corner of the globe so that every user across our 220+ countries and regions feels right at home.

The team partners closely with Product, Design, Data Science, regional stakeholders, and core platform/vertical teams to translate local market needs into durable, scalable technology that can be piloted quickly and then rolled out broadly.

The Difference You Will Make:

A Senior Software Engineer in Global Markets is expected to deliver measurable international growth impact by building scalable product capabilities across key funnel surfaces (landing → search → pre‑booking) and by improving pricing, promotions, and discounts to increase conversion and customer value across markets.

A Typical Day

• Partner with PM/Design/Data Science to clarify goals, requirements, constraints, and success metrics, and translate them into a sequenced technical plan.
• Write or review technical designs, align tradeoffs, and coordinate dependencies with partner teams across regions.
• Build production code and services with a high quality bar: testing, documentation, instrumentation, and performance/reliability considerations.
• Run design and code reviews, advise engineers, and help drive consistent engineering standards across the team.
• Own delivery: track execution risks, provide stakeholder updates, coordinate launches (including localization/market rollout), and monitor post-launch results to iterate quickly.

Your Expertise

• Fluency in English is required. Japanese or Korean working proficiency is a plus .
• 6+ years of hands-on software engineering experience, with a strong track record shipping production systems.
• Solid understanding of large-scale backend architecture and distributed systems patterns (e.g., well-designed APIs, scalable data models, high-throughput services/pipelines, and performance-aware algorithms).
• Proven ability to drive ambiguous problems to resolution: break down open-ended requirements, propose pragmatic solutions, and execute independently while keeping stakeholders aligned.
• Strong programming skills in one or more of the following: Java, Kotlin, Python, Ruby/Ruby on Rails, JavaScript/TypeScript, with experience building and operating backend services.
• High engineering quality bar: you write clean, testable, maintainable code, and you design with reliability, observability, and operational readiness in mind.
• You actively raise the team’s technical bar through thoughtful code reviews, architecture discussions, and sharing best practices that improve overall team productivity.
• Data-informed decision making: you use metrics and experimentation to validate impact, diagnose issues, and iterate toward better outcomes—recognizing that small improvements in these flows can drive meaningful business results.
• Strong collaboration and communication skills: you work effectively across engineering teams and with Product, Design, and Data partners in a global environment.

Location: Shanghai, China (Global Engineering Hub) Organization Size: ~30 Engineers | 2–3 Engineering Managers

Position Summary

As the Senior Engineering Manager for the Mobile App team, you will be the strategic lead for our mobile engineering organization. You will move the team from a "task-driven" unit to a "mission-driven" powerhouse, overseeing the development and optimization of our native iOS and Android applications. You will be responsible for a team of approximately 30 engineers through a "manager of managers" structure, ensuring that our mobile platforms deliver elite-level customer experiences, performance, and stability for our global e-commerce audience.

Key Responsibilities

Strategic Leadership & Team Growth

• Team Evolution:Directly manage and mentor 2–3 Engineering Managers; cultivate a high-performing, autonomous culture focused on ownership, continuous learning, and digital fluency.
• Talent Strategy:Lead talent and succession planning, identifying internal high-potentials and utilizing strategic global sourcing to ensure team resilience.
• Culture Reshaping:Reset the organization’s culture from "executing tickets" to "owning outcomes," fostering a mission-driven mindset that eliminates cross-functional friction.

Operational Excellence & Execution

• Delivery Governance:Oversee project execution from concept to deployment, ensuring on-time, high-quality delivery across high-stakes initiatives.
• Agile Execution:Implement sophisticated performance frameworks to measure real engineering health, flow efficiency, and developer experience.
• Cross-Functional Alignment:Serve as a strategic partner to Product Managers, UX Designers, and other domain software managers to align the mobile roadmap with overarching business objectives.

Technical Innovation & Architecture

• Native Excellence:Drive the technical vision for native iOS (Swift) and Android (Kotlin) platforms, ensuring a modular, scalable architecture that minimizes technical debt.
• AI-Native SDLC:Lead the integration of AI-augmented development workflows (e.g., Claude Code, Kiro, Snyk/Figma MCP) to serve as a force multiplier for testing, documentation, and code generation.
• System Integrity:Ensure robust monitoring, logging, and governance to maintain industry-leading standards for app stability, security, and performance.

Required Qualifications

• Experience:12+ years of software engineering experience, with at least 5+ years in a people leadership role managing multiple teams or managers.
• Technical Mastery:Deep, hands-on expertise in Native Mobile Development (iOS/Swift and Android/Kotlin) is a must. You should have a proven track record of moving from a Principal Engineer to a Senior Leadership role.
• Domain Expertise:Prior experience in a fast-paced e-commerce or consumer-facing digital environment is highly preferred.
• Architectural Depth:Strong understanding of mobile app lifecycles, app store processes, RESTful APIs, and modern DevOps practices (CI/CD, observability).
• Education:Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field.

What You’ll Bring

• Business Intelligence:The ability to translate complex technical decisions into business value (revenue, margin, and retention) for executive leadership.
• Innovation Mindset:A passion for staying ahead of tech trends—including Agentic AI and Multi-Agent Orchestration—and the vision to apply them to real-world business problems.
• Collaborative Style:An influential leadership style that builds trust across distributed global teams and fosters a culture of technical rigor.

#LI-OJ1
 
 

The mission of Speechify is to make sure that reading is never a barrier to learning.

Over 50 million people use Speechify’s text-to-speech products to turn whatever they’re reading – PDFs, books, Google Docs, news articles, websites – into audio, so they can read faster, read more, and remember more. Speechify’s text-to-speech reading products include its iOS app, Android App, Mac App, Chrome Extension, and Web App. Google recently named Speechify the Chrome Extension of the Year and Apple named Speechify its Design award winner for inclusivity for 2025.

Today, nearly 200 people around the globe work on Speechify in a 100% distributed setting – Speechify has no office. These include frontend and backend engineers, AI research scientists, and others from Amazon, Microsoft, and Google, leading PhD programs like Stanford, high growth startups like Stripe, Vercel, Bolt, and many founders of their own companies.

Overview

With the growth of our Android app, being the most used text-to-speech app in the Play Store, we find the need for a Senior Android Engineer to help us support the new user base as well as work on new and exciting projects to push us forward.   

This is a key role and ideal for someone who thinks strategically, enjoys fast-paced environments, passionate about making product decisions, and has experience building great user experiences that delight users.

We are a flat organization that allows anyone to become a leader by showing excellent technical skills and delivering results consistently and fast. Work ethic, solid communication skills, and obsession with winning are paramount. 

Our interview process involves several technical interviews and we aim to complete them within 1 week. 

What You’ll Do

• Owning major features and working closely with our design team - take ownership of features inside the app and become responsible of delivering high quality features
• Shape the future of our Android team
• Own, maintain and improve reliability metrics for key features
• Participate in discussions across different teams - Product, Design, Engineering
• Review pull requests, and support other teammates
• Handle critical issues or cope with unexpected challenges 
• Take ownership of feature releases and provide nightly builds for the QA team

An Ideal Candidate Should Have

• 5+ years of software engineering experience
• Familiarity with Android components
• Experience building or contributing to at least one Android app
• Product design intuition and user empathy
• Drive to push the boundaries of Android UI/UX
• Understanding of the importance of tests and how to approach writing tests
• Self-drive to improve the app and codebase above and beyond what's outlined in the spec
• Rock solid experience with Kotlin, Kotlin Coroutines, Kotlin Flow, Dagger 2, MVVM, Clean Architecture, Background Services, Music Player Service, Android Animations, Jetpack Navigation, JUnit tests
• Excellent communication skills
• User oriented problem solving approach
• Driven with continuous feedback from leaders

Bonus:

• Experience building, maintaining, or otherwise contributing to open source projects in Android
• Experience with iOS, Web or NodeJS

Technologies we use:

• Kotlin
• Kotlin Coroutines
• Kotlin Flow
• Jetpack Navigation
• Dagger 2
• Room
• Custom Views, Canvas & Paint
• Jetpack Compose
• JUnit

What We offer:

• A fast-growing environment where you can help shape the company and product.
• An entrepreneurial-minded team that supports risk, intuition, and hustle.
• A hands-off management approach so you can focus and do your best work.
• An opportunity to make a big impact in a transformative industry.
• Competitive salaries, a friendly and laid-back atmosphere, and a commitment to building a great asynchronous culture.
• Opportunity to work on a life-changing product that millions of people use.
• Build products that directly impact and support people with learning differences like dyslexia, ADD, low vision, concussions, autism, and more.
• Work in one of the fastest growing sectors of tech, the intersection of artificial intelligence and audio.

Think you’re a good fit for this job? 

Tell us more about yourself and why you're interested in the role when you apply.
And don’t forget to include links to your portfolio and LinkedIn.

Not looking but know someone who would make a great fit? 

Refer them! 

Speechify is committed to a diverse and inclusive workplace. 

Speechify does not discriminate on the basis of race, national origin, gender, gender identity, sexual orientation, protected veteran status, disability, age, or other legally protected status.

Mission

Speechify is the easiest way to listen to the world’s information. Articles on the web, documents in the cloud, books on your phone. We absorb it all and let you listen to it at your desk, on the go, at your own speed, and with tools that make learning easier, deeper, and faster.

What streaming services have done for audio entertainment, we’re doing for audio information. And whatever we’re doing seems to be working. We’re #1 in our category, and experiencing exponential growth.

Overview

We're looking for a Senior Software Engineer to join our Core Experiences Team. This team builds and maintains the foundational services and SDKs that power Speechify’s product experience across platforms. It's a critical role for someone who enjoys working at the intersection of product and infrastructure, thinks strategically, and is passionate about designing clear, reliable APIs and simple systems that directly enhance the user experience.

What You’ll Do

• Collaborate with Speechify’s Product Teams to scope projects, find ways to reduce scope to get faster feedback from customers, navigate the integration/UX tradeoffs relevant to different product teams, and deliver solutions via our cross-platform SDK
• Optimize existing functionality to ship things like faster loading and more intelligent parsing by designing more efficient abstractions and improving our algorithms
• Ship cloud functions, lightweight backend services, and jobs using Kotlin

An Ideal Candidate Should Have

• Systems thinking. You know that optimizing a system requires end-to-end design, and you believe simplicity is valuable.
• Speed. You work quickly to generate ideas and options and know how to decide which things can ship now and what things need time
• Focus. We’re a high-growth startup with a busy, remote team. You know how and when to engage or be heads down
• Collaboration. You know how to inspire, play, and negotiate with opinionated designers, marketers, and PMs
• Preferred Tech Stack:
  • Kotlin Multiplatform (Java experience is OK but role is Kotlin Multiplatform) 
  • Prior experience with GCP is a plus

What We Offer

• A fast-growing environment where you can help shape the company and product.
• An entrepreneurial-minded team that supports risk, intuition, and hustle.
• A hands-off management approach so you can focus and do your best work.
• An opportunity to make a big impact in a transformative industry.
• Competitive salaries, a friendly and laid-back atmosphere, and a commitment to building a great asynchronous culture.
• Opportunity to work on a life-changing product that millions of people use.
• Build products that directly impact and support people with learning differences like dyslexia, ADD, low vision, concussions, autism, and more.
• Work in one of the fastest growing sectors of tech, the intersection of artificial intelligence and audio.

Think you’re a good fit for this job? 

Tell us more about yourself and why you're interested in the role when you apply.
And don’t forget to include links to your portfolio and LinkedIn.

Not looking but know someone who would make a great fit? 

Refer them! 

Speechify is committed to a diverse and inclusive workplace. 

Speechify does not discriminate on the basis of race, national origin, gender, gender identity, sexual orientation, protected veteran status, disability, age, or other legally protected status.

Scopely's Security team is looking for an Anticheat Engineer to build a new client security function in China. You will design and ship client/server-side protections for large-scale mobile games, combat sophisticated cheating ecosystems, and help ensure fair play for tens of millions of players.

What You Will Do

• Build, and grow the Client Security team in China, setting China specific technical direction, and operational best practices.
• Design, implement, and maintain client-side detections against third‑party cheating tools, modified clients, hooking frameworks, and emulators on Android and iOS.
• Own the client security integration into Scopely's internal anti-cheat platforms working closely with teams to ensure detections are actionable and scalable.
• Define and evolve the obfuscation and hardening strategy for China mobile builds (e.g., binary protection, anti-debugging, anti-tamper, integrity checks), including evaluating and integrating third‑party hardening vendors where appropriate.
• Build and maintain strong coverage for the China mobile ecosystem, including:
• distribution through multiple Android app stores and OEM devices,
• diverse OS/ROM variants and rooted/jailbroken environments,
• and local PC/emulator-based cheating patterns.
• Contribute hands-on code (C++ plus Java/Kotlin and/or Objective‑C/Swift) in security‑sensitive paths, including detection logic, integrity checks, and secure client–server protocols.

What We’re Looking For

• Experience in mobile security, game anti-cheat, or client-side security engineering, including time working directly on Android or iOS native code.
• Direct experience with reverse engineering.
• Deep hands-on experience with:
• Android and IOS internals 
• hooking and instrumentation frameworks,
• and common mobile client security attack vectors.
• Strong proficiency in C/C++ and at least one mobile native language (Java/Kotlin for Android or Objective‑C/Swift for iOS), including experience shipping production code in large apps.
• Demonstrated experience designing and shipping client-side anti-cheat or integrity systems that integrate with server-side enforcement or analytics pipelines.
• Prior experience ing or technically directing a small engineering team 
• Experience working with large-scale telemetry or anti-abuse pipelines and using data to tune detections and reduce false positives.
• Professional proficiency in both Mandarin and English, written and spoken
• Requires five days per week in the office

Bonus Points

• BS / MS in Computer Science or Software Engineering or equivalent
• Experience shipping and securing mobile games or other large-scale consumer apps specific to the China market, specific exposure to:
• multiple Android app-store ecosystems and OEM variations,
• desktop/mobile emulator usage patterns,
• and tooling development experience specific for china mobile games 
• Previous CTF experience, and CVE contributing experience
• Prior work on client obfuscation / hardening pipelines, including vendor evaluation and integration, and handling performance and stability tradeoffs.
• Familiarity with large-scale cloud environments, streaming data processing, and monitoring/alerting

Our mission at Duolingo is to develop the best education in the world and make it universally available. It’s a big mission, and that’s where you come in!

At Duolingo, you’ll join a team that cares about educating our users, experimenting with big ideas, making fact-based decisions, and finding innovative solutions to complex problems. You’ll have limitless learning opportunities and daily collaborations with world-class minds — while doing work that’s both meaningful and fun.

Join our life-changing mission to develop education for our half a billion (and growing!) learners around the world. 

Read our blog to learn more.

About the role...

We’re looking for a Software Engineer I to join our China team. In this role, you’ll build and ship features that drive user growth and deliver high-quality learning experiences to millions of learners in China. You’ll work closely with product managers, designers to create engaging, localized experiences tailored to this market.

This is an opportunity to contribute to a fast-moving, high-impact team focused on one of Duolingo’s most important growth regions. You’ll gain experience working across the stack (backend and client), running experiments, and collaborating cross-functionally to improve key metrics like daily active users (DAU).

🧠  You will...

• Collaborate with product managers and designers to drive user growth in China.
• Work with Government Relations (GR) and cross-functional partners to ensure product compliance in China
• Lead individual project priorities, deadlines, and deliverables
• Contribute to code reviews and collaborate across teams to ensure quality and scalability

✅  You have...

• Graduated or will graduate with a B.S. or M.S. degree in Computer Science or related technical field (i.e. math, physics, or data science) before summer 2026
• 0–1 years of experience programming in one or more of: Java, Python, Kotlin, or Swift
• Dedication to our mission of universally available education
• Relocation to Beijing, China. This position is based in Beijing.

⭐  Exceptional candidates will have...

• A GPA of 3.6+
• A Duolingo streak
• Proficient in both spoken and written English.

Scopely is looking for a Client Engineer to join an unannounced title based in our Shanghai office (5 days in the office).

At Scopely, we care deeply about what we do and want to inspire play, every day - whether in our work environments alongside our talented colleagues, or through our deep connections with our communities of players. We are a global team of game lovers who are developing, publishing and innovating the mobile games industry, connecting millions of people around the world daily. 

We are in the early stages of development on an ambitious mobile game in China, and we’re assembling a team of passionate game makers to craft unforgettable characters and immersive adventures that players will love.

What You Will Do

We are looking for a Client Engineer to help build the next generation of our games. You will work with a team of passionate engineers while developing core systems and features that power large-scale, real-time experiences for our unannounced game title. You’ll work on complex technical challenges involving real-time interaction, large-scale systems, and a persistent shared world used by tens of millions of players.

• Develop, and maintain key client-side components that enable rich, scalable game experiences.
• Partner closely with server, product, design, and other cross-functional teams to ensure technical alignment and product quality.
• Apply engineering best practices, including code reviews, unit testing, load testing, and performance optimization.
• Troubleshoot complex issues across mobile platforms to ensure stability and uptime for live systems.
• Participate in regular in-person meetings and collaboration sessions (role requires 5 days/week in office).

What We're Looking For

• Experience developing commercial games in Unity, C#
• Experience with at least one of the following: 
• Mobile native coding (Java/Kotlin for Android, ObjC/Swift for iOS, C/C++ for native)
• Network programming, cloud computing and server debugging
• Graphics programming for 3D games
• Familiar with Git, Bash and Gradle
• Strong problem solving and communication skills
• Professional proficiency in both Mandarin and English
• BS / MS in Computer Science or Software Engineering or equivalent

Bonus Points 

• Experience with profiling and optimization for mobile
• Experience with developing productivity tools and creating efficient procedures
• Rich experience in playing mobile games and console games
• Experience leading a team: task breakdown&scoping, code reviews, mentoring junior devs, prototyping, etc.
• Excellent verbal English communication

At Scopely, we create games for everyone - and want to ensure that the people behind our games reflect that!   We are committed to creating a diverse, supportive work environment where everyone is treated with respect. We are committed to providing equal employment opportunities and welcome individuals from all backgrounds to join us & embrace the adventure!

About the Company

The position is for a silicon-valley based company (Branch Metrics) that specializes in mobile attribution and app discovery. You will be joining an international team developing an in-house SDK used by many OEM phone manufacturers (Xiaomi etc).

About the Role

We are seeking a skilled Android Developer with a strong focus on (QA) to join our mobile engineering team. The ideal candidate has hands-on experience developing Android applications, as well as designing and executing test strategies to ensure high-quality releases. This hybrid role involves both feature development and test automation, ensuring reliability, performance, and a smooth user experience.

Qualifications:

• 3–5 years of Android development experience with a focus on SDKs, libraries, or frameworks.
• Strong proficiency in Kotlin, especially coroutines and Flow.
• Experience with automated testing frameworks (JUnit, Robolectric, Espresso) and mocking libraries(Mockito) .
• Strong debugging skills with tools like ADB, Perfetto, and Android Studio Profiler.
• Experience with Git and CI/CD workflows.
• Extensive experience with Jetpack libraries with Jobscheduler
• Proficiency in reading and written English skills is required as you will need to collaborate with a global team on a daily basis

Nice-to-have:

• SDK development background
• Launcher, AOSP development skills
• Exposure to mobile performance optimization, memory analysis, and ANR mitigation.
• Proficient in speaking English

Our mission at Duolingo is to develop the best education in the world and make it universally available. It’s a big mission, and that’s where you come in!

At Duolingo, you’ll join a team that cares about finding innovative solutions to complex technical problems, running countless experiments (300+ at a time!) with our massive user base to make data-driven decisions, and educating our users and employees alike. You’ll have limitless learning opportunities, mentorship and collaboration with world-class minds, and a variety of projects with large scopes — while doing work that’s both fun and meaningful. 

Join our life-changing mission to develop education for our half a billion (and growing!) learners around the world.

About the role

We’re looking for founding members of the newly formed Asia Growth team. Your role will be to improve the Android user experience by leveraging your extensive experience to enhance the performance and efficiency of our Android app. This position offers an exciting opportunity to drive performance improvement initiatives that directly impact user experience and retention. Join us to make a significant impact on Duolingo’s key business metric DAU, worldwide!

  You will...

• Quickly develop native Android application performance optimizations in Kotlin.
• Collaborate closely with cross-functional teams to identify performance bottlenecks and implement solutions.
• Perform experiment analysis on features and find opportunities for optimization.

  You have...

• A minimum of 5 years of programming experience in Android development with a strong focus on performance optimization.
• Experience in developing world-class apps with stability, performance, and scalability in mind.
• Demonstrated ability to diagnose and resolve complex performance issues, including memory leaks, UI lag, and slow network responses.
• The ability to communicate technical issues effectively to technical and non-technical stakeholders.
• A desire to make the world a better place through technology and education.
• Ability to apply user insights, data, and statistical analyses to inform decisions.
• A Bachelor’s degree in Computer Science or a related technical field.
• Ability to work from or relocate to Beijing, China.

Our mission at Duolingo is to develop the best education in the world and make it universally available. It’s a big mission, and that’s where you come in!

At Duolingo, you’ll join a team that cares about finding innovative solutions to complex technical problems, running countless experiments (300+ at a time!) with our massive user base to make data-driven decisions, and educating our users and employees alike. You’ll have limitless learning opportunities, mentorship and collaboration with world-class minds, and a variety of projects with large scopes — while doing work that’s both fun and meaningful. 

Join our life-changing mission to develop education for our half a billion (and growing!) learners around the world.

About the role...

We’re looking for founding members of the newly formed Asia Growth team. Your role will be to improve the Android user experience by leveraging your extensive experience to enhance the performance and efficiency of our Android app. This position offers an exciting opportunity to drive performance improvement initiatives that directly impact user experience and retention. Join us to make a significant impact on Duolingo’s key business metric DAU, worldwide!

🧠  You will...

• Quickly develop native Android application performance optimizations in Kotlin.
• Collaborate closely with cross-functional teams to identify performance bottlenecks and implement solutions.
• Perform experiment analysis on features and find opportunities for optimization.

✅  You have...

• A minimum of 5 years of programming experience in Android development with a strong focus on performance optimization.
• Experience in developing world-class apps with stability, performance, and scalability in mind.
• Demonstrated ability to diagnose and resolve complex performance issues, including memory leaks, UI lag, and slow network responses.
• The ability to communicate technical issues effectively to technical and non-technical stakeholders.
• A desire to make the world a better place through technology and education.
• Ability to apply user insights, data, and statistical analyses to inform decisions.
• A Bachelor’s degree in Computer Science or a related technical field.
• Ability to work from or relocate to Beijing, China.

Mission

Speechify is the easiest way to listen to the world’s information. Articles on the web, documents in the cloud, books on your phone. We absorb it all and let you listen to it at your desk, on the go, at your own speed, and with tools that make learning easier, deeper, and faster.

What streaming services have done for audio entertainment, we’re doing for audio information. And whatever we’re doing seems to be working. We’re #1 in our category, and experiencing exponential growth.

Overview

We're looking for a Senior Software Engineer to join our Core Experiences Team. This team builds and maintains the foundational services and SDKs that power Speechify’s product experience across platforms. It's a critical role for someone who enjoys working at the intersection of product and infrastructure, thinks strategically, and is passionate about designing clear, reliable APIs and simple systems that directly enhance the user experience.

What You’ll Do

• Collaborate with Speechify’s Product Teams to scope projects, find ways to reduce scope to get faster feedback from customers, navigate the integration/UX tradeoffs relevant to different product teams, and deliver solutions via our cross-platform SDK
• Optimize existing functionality to ship things like faster loading and more intelligent parsing by designing more efficient abstractions and improving our algorithms
• Ship cloud functions, lightweight backend services, and jobs using Kotlin

An Ideal Candidate Should Have

• Systems thinking. You know that optimizing a system requires end-to-end design, and you believe simplicity is valuable.
• Speed. You work quickly to generate ideas and options and know how to decide which things can ship now and what things need time
• Focus. We’re a high-growth startup with a busy, remote team. You know how and when to engage or be heads down
• Collaboration. You know how to inspire, play, and negotiate with opinionated designers, marketers, and PMs
• Preferred Tech Stack:
  • Kotlin Multiplatform (Java experience is OK but role is Kotlin Multiplatform) 
  • Prior experience with GCP is a plus

What We Offer

• A fast-growing environment where you can help shape the company and product.
• An entrepreneurial-minded team that supports risk, intuition, and hustle.
• A hands-off management approach so you can focus and do your best work.
• An opportunity to make a big impact in a transformative industry.
• Competitive salaries, a friendly and laid-back atmosphere, and a commitment to building a great asynchronous culture.
• Opportunity to work on a life-changing product that millions of people use.
• Build products that directly impact and support people with learning differences like dyslexia, ADD, low vision, concussions, autism, and more.
• Work in one of the fastest growing sectors of tech, the intersection of artificial intelligence and audio.

Think you’re a good fit for this job? 

Tell us more about yourself and why you're interested in the role when you apply.
And don’t forget to include links to your portfolio and LinkedIn.

Not looking but know someone who would make a great fit? 

Refer them! 

Speechify is committed to a diverse and inclusive workplace. 

Speechify does not discriminate on the basis of race, national origin, gender, gender identity, sexual orientation, protected veteran status, disability, age, or other legally protected status.

The mission of Speechify is to make sure that reading is never a barrier to learning.

Over 50 million people use Speechify’s text-to-speech products to turn whatever they’re reading – PDFs, books, Google Docs, news articles, websites – into audio, so they can read faster, read more, and remember more. Speechify’s text-to-speech reading products include its iOS app, Android App, Mac App, Chrome Extension, and Web App. Google recently named Speechify the Chrome Extension of the Year and Apple named Speechify its Design award winner for inclusivity for 2025.

Today, nearly 200 people around the globe work on Speechify in a 100% distributed setting – Speechify has no office. These include frontend and backend engineers, AI research scientists, and others from Amazon, Microsoft, and Google, leading PhD programs like Stanford, high growth startups like Stripe, Vercel, Bolt, and many founders of their own companies.

Overview

With the growth of our Android app, being the most used text-to-speech app in the Play Store, we find the need for a Senior Android Engineer to help us support the new user base as well as work on new and exciting projects to push us forward.   

This is a key role and ideal for someone who thinks strategically, enjoys fast-paced environments, passionate about making product decisions, and has experience building great user experiences that delight users.

We are a flat organization that allows anyone to become a leader by showing excellent technical skills and delivering results consistently and fast. Work ethic, solid communication skills, and obsession with winning are paramount. 

Our interview process involves several technical interviews and we aim to complete them within 1 week. 

What You’ll Do

• Owning major features and working closely with our design team - take ownership of features inside the app and become responsible of delivering high quality features
• Shape the future of our Android team
• Own, maintain and improve reliability metrics for key features
• Participate in discussions across different teams - Product, Design, Engineering
• Review pull requests, and support other teammates
• Handle critical issues or cope with unexpected challenges 
• Take ownership of feature releases and provide nightly builds for the QA team

An Ideal Candidate Should Have

• 5+ years of software engineering experience
• Familiarity with Android components
• Experience building or contributing to at least one Android app
• Product design intuition and user empathy
• Drive to push the boundaries of Android UI/UX
• Understanding of the importance of tests and how to approach writing tests
• Self-drive to improve the app and codebase above and beyond what's outlined in the spec
• Rock solid experience with Kotlin, Kotlin Coroutines, Kotlin Flow, Dagger 2, MVVM, Clean Architecture, Background Services, Music Player Service, Android Animations, Jetpack Navigation, JUnit tests
• Excellent communication skills
• User oriented problem solving approach
• Driven with continuous feedback from leaders

Bonus:

• Experience building, maintaining, or otherwise contributing to open source projects in Android
• Experience with iOS, Web or NodeJS

Technologies we use:

• Kotlin
• Kotlin Coroutines
• Kotlin Flow
• Jetpack Navigation
• Dagger 2
• Room
• Custom Views, Canvas & Paint
• Jetpack Compose
• JUnit

What We offer:

• A fast-growing environment where you can help shape the company and product.
• An entrepreneurial-minded team that supports risk, intuition, and hustle.
• A hands-off management approach so you can focus and do your best work.
• An opportunity to make a big impact in a transformative industry.
• Competitive salaries, a friendly and laid-back atmosphere, and a commitment to building a great asynchronous culture.
• Opportunity to work on a life-changing product that millions of people use.
• Build products that directly impact and support people with learning differences like dyslexia, ADD, low vision, concussions, autism, and more.
• Work in one of the fastest growing sectors of tech, the intersection of artificial intelligence and audio.

Think you’re a good fit for this job? 

Tell us more about yourself and why you're interested in the role when you apply.
And don’t forget to include links to your portfolio and LinkedIn.

Not looking but know someone who would make a great fit? 

Refer them! 

Speechify is committed to a diverse and inclusive workplace. 

Speechify does not discriminate on the basis of race, national origin, gender, gender identity, sexual orientation, protected veteran status, disability, age, or other legally protected status.

Would you like to get hands-on experience with the latest technologies and gain insight into industry-changing software development tools? Are you keen to diversify your skill set and expand your professional network? Join our team and become a JetBrains Campus Ambassador in China!

At JetBrains, code is our passion. Ever since we started back in 2000, we have strived to make the strongest, most effective developer tools on earth. By automating routine checks and corrections, our tools speed up production, freeing developers to grow, discover, and create.

We are looking for a passionate leader to help us raise awareness about JetBrains tools and Kotlin in China's universities and colleges.

If you are pursuing an undergraduate or graduate university degree and are familiar with JetBrains software development tools, such as IntelliJ IDEA, PyCharm, CLion, and others, this might be an exciting opportunity for you. In this role, you’ll be able to share your experience of JetBrains products with your peers and help us spread the word that JetBrains provides tools to students for free.

As part of our team, you will:

• As a student expert, you will host student meetups, workshops, and Q&A sessions, delivering talks on cool technologies that showcase JetBrains tools.
• Coordinate JetBrains’ participation in student conferences, campus competitions, hackathons, and similar events.
• Set up a student club, mentor peers, and build a community of passionate students.
• Collaborate with fellow JetBrains Campus Ambassadors worldwide.

We expect that you:

• Are currently enrolled in Computer Science or a related technical field, with a background in software development.
• Are familiar with and have a passion for JetBrains tools and are eager to share that passion with others.
• Have excellent communication and public speaking skills.
• Experience planning events or leading a team would be a plus.

With this position, you will gain:

• Access to a network of product and technology experts from JetBrains who can mentor you and share their expertise.
• Practical experience in activity organization, coordination and communication with students
• Gain a first-mover advantage in your career path and expand your communication network in the global technology ecosystem
• Use all JetBrains tools and technologies for free to help you and your peers move forward

This is a part-time position based at the China Universities campus.

#LI-DNI 

职位介绍

职位描述

1. 负责公司工业级可穿戴设备（AI眼镜）端应用的架构设计、开发与维护，覆盖 Android 与 OpenHarmony / HarmonyOS NEXT 双平台；

2. 主导核心功能模块开发，包括：第一视角音视频采集、语音交互、AR信息叠加、远程协作、离线AI推理集成等；

3. 跟踪鸿蒙生态演进，评估新技术（如分布式能力、Stage 模型、ArkTS 响应式框架）在工业场景的落地价值。

4. 实现蓝牙/Wi-Fi P2P 双通道通信，稳定传输第！视角视频流、语音指令与 标注数据；

5. 优化弱网、强电磁干扰等工业现场环境下的 App 稳定性与续航表现；

6. 与产品经理、算法工程师、AR 设计师紧密协作，打磨符合行业作业规范的交互体验。

职位描述:

• 功能开发： 使用 Flutter 框架开发和部署 iOS 及 Android 平台的高质量功能。
• UI/UX 实现： 将 Figma 设计稿转化为像素级还原、流畅且响应迅速的移动端界面。
• 性能优化： 识别并修复性能瓶颈和 Bug，确保应用在不同设备和网络环境下都能提供特别的体验。
• 架构维护： 参与架构讨论，维护清晰、可扩展且可测试的代码库（熟悉状态管理、依赖注入等）。
• 系统集成： 负责与 RESTful APIs、GraphQL 以及第三方 SDK（支付网关、分析工具等）的无缝集成。
• 跨团队协作： 在敏捷（Agile）开发环境下，与深圳和香港的跨职能团队协作，定义、设计并发布新功能。
• 代码质量： 编写单元测试和集成测试，保持高标准的工程水平。

职位要求:

• 本科及以上学历，计算机、软件工程或相关专业，3 年以上 Android 开发经验；
• 精通 Kotlin，熟悉 Android Jetpack 组件（ViewModel, Room, WorkManager 等）；
• 有 蓝牙（BLE）、Wi-Fi P2P 或 Socket 通信 开发经验，理解低延迟数据传输机制；
• 熟悉 多线程、内存优化、ANR/崩溃分析 等性能调优手段；
• 具备良好的工程素养：Git 规范、单元测试、CI/CD 流程意识；
• 能快速阅读英文技术文档，具备独立解决问题能力。

软性素质：

• 学习能力：能快速理解新技术并应用于实践（如AIGC、Agent技术）。
• 逻辑思维：擅长抽象问题建模，能从数据中挖掘潜在规律。
• 沟通能力：清晰传递技术方案，协调多方资源推进项目。
• 创新意识：对技术突破有强烈兴趣，有顶会论文或开源项目加分。
• 加分项（满足任意一项即可优先考虑）：
• 熟悉 OpenHarmony 驱动层（HDF）或 Native C++ 开发（NDK / NAPI）；
• 有 Rokid、XREAL、雷鸟、INMO 等 AR 智能眼镜 开发经验；
• 熟悉 Rokid CXR-M / CXR-S SDK 或类似硬件控制 SDK；
• 有 工业、能源、电力、IoT 或 B 端 SaaS 项目背景；
• 了解 OpenCV、TensorFlow Lite、ML Kit 等移动端 AI 推理框架；
• 对 AR UI/UX、语音交互、离线架构 有实践经验。

The Community You Will Join:

The Client Products & Emerging Technology (CP&ET) team is a global, cross-functional group dedicated to building foundational frameworks and innovative, app-wide features that shape the end-to-end experience for Airbnb’s guests and hosts. You’ll join a collaborative environment that thrives on experimentation, partnership, and continuous learning—working closely with Product, Design, Engineering, and Data partners to deliver impactful solutions across multiple platforms. 

The Difference You Will Make:

As a member of a diverse and distributed team across the US and China, you’ll be expected to leverage your expertise in both Frontend and Backend development (Frontend-Heavy) to play a key role in building foundational frameworks, exploring emerging technologies, driving best practices, and enabling rapid feature rollouts that integrate seamlessly throughout the Airbnb ecosystem.

A Typical Day: 

• Collaborate closely with engineers across platforms—including frontend, backend, native (iOS/Android), and infrastructure—to build cohesive solutions.
• Work in partnership with cross-functional teams, including Design, Product, and Data Science, to define and deliver impactful outcomes.
• Propose and implement robust architectural patterns for high-scale web applications and backend services, focusing on well-designed APIs, efficient data pipelines, and performant algorithms.
• Develop scalable, high-quality foundational frameworks as well as innovative product features used by millions of guests and hosts.
• Evaluate technical solutions, contribute to product and framework design discussions, and help shape new features from concept to launch.
• Drive alignment, manage technical projects, and work effectively with diverse stakeholders.
• Write unit and integration tests, participate in code reviews, and uphold high engineering standards across the team.

Your Expertise:

• 5+ years of professional software development experience, with a focus on building both frontend and backend systems 
• Advanced proficiency in modern frontend technologies—including HTML, CSS, JavaScript/TypeScript, frameworks like React or Angular, and frontend architecture (build tools, reusable components).
• Deep expertise in one or more backend/server languages (e.g., Java, Kotlin, C++, etc.) and proven experience designing and scaling high-quality, high-traffic backend services
• Passion for building and evolving foundational frameworks that solve key engineering needs and support the wider team.
• Proven track record of delivering impactful products end-to-end, with a dedication to creating interactive, high-quality, and delightful user experiences.
• Self-driven and excited to tackle large, open-ended projects and drive meaningful business impact in a collaborative environment.
• Solid foundation in unit, integration, and end-to-end testing practices.
• Fluent in both Chinese and English

Your Location

This position is remote work within China Mainland. The role may include occasional work at an Airbnb office or attendance at offsites, as agreed to with your manager. Your recruiter will inform you what cities you are able to work from depending on your personal legal working identity and Airbnb internal policies.

Our Commitment to Inclusion & Belonging:
Airbnb is committed to working with the broadest talent pool possible. We believe diverse ideas foster innovation and engagement, and allow us to attract creatively-led people, and to develop the best products, services and solutions. All qualified individuals are encouraged to apply.

Summary: Join a leading non-custodial wallet provider committed to bringing the next billion users into the world of decentralized finance (DeFi). We are seeking a talented mobile application developer to build high-security mobile applications and implement advanced biometric authentication and secure key storage solutions.

Responsibilities:

• Develop and maintain high-security mobile applications using React Native, Swift, or Kotlin.
• Implement and enhance biometric authentication features to ensure user security.
• Design and manage secure key storage systems.
• Collaborate with cross-functional teams to define, design, and deliver new features.
• Troubleshoot and debug to improve application performance.
• Stay updated with emerging technologies and propose enhancements to improve user experience.

Required Skills:

• 3+ years of experience in mobile application development using React Native, Swift, or Kotlin.
• Strong understanding of mobile security principles and best practices.
• Experience with implementing biometric authentication.
• Knowledge of secure key storage methodologies.
• Excellent problem-solving skills and attention to detail.
• Strong communication and teamwork abilities.

Important to read before submit application: This role must be physically based in China.

We are hiring 2 Staff Software Engineer positions for different teams under the Community Support Platform. 

The Community You Will Join:

Community Support (CS) has increasingly become a key driver of enabling Airbnb's core business. Community Support Engineering is responsible for the world-class technology, architecture, and solutions that power CS at Airbnb. The products and capabilities we build empower our guests and hosts, CS agents, and operations teams around the world. As a member of CSP in China, you will have a great opportunity to make lasting impacts on the Airbnb CS user experience.

The Difference You Will Make:

We are seeking a highly skilled and motivated engineer who is passionate about making a difference through their work. As a Staff Software Engineer, you will be the technical lead in a team of talented and diverse software engineers leading the project execution to improve Airbnb customers and agents experience. You will lead the team and work with global technical leaders to build and evolute CS engineering foundations, such as Routing, Data platform, Case management, foundational toolings etc

A Typical Day: 

• Collaborating with cross-functional partners to deeply understand business problems before developing project solutions.
• Leading the execution of projects across the full software development lifecycle, including technical design, implementation, testing, and deployment, ensuring solutions are high-quality, scalable, and performant; 
• Driving productive and constructive technical discussions with peers and cross-team technical leaders in the global collaborative working environment, to ensure alignments with technical strategies across CS products and capabilities.
• Tackling highly complex technical challenges, proactively identifying and mitigating potential risks during project execution.
• Writing exemplary and high-quality codes and design documents that set the standard for the team.
• Advocating for and embedding engineering best practices within the team, ensuring a culture of technical excellence.
• Actively coaching and mentoring engineers across the CSP China team to foster growth and elevate technical capabilities.
• Supporting team growth by participating in recruiting efforts and conducting interviews.
• Promoting and exemplifying an engineering culture with inclusiveness, effective communication, and quality. 
• Being a collaborative and supportive teammate who inspires and elevates the entire engineering organization.

Your Expertise:

• 9+ years of software development experience.
• Strong proficiency in at least one major backend programming language (e.g., Java, Kotlin, Scala, Python); experience with modern front-end frameworks (e.g., React, Angular, Vue.js) are preferred but not a must.
• Proven track record of delivering end-to-end products in a collaborative environment globally.
• Experience with architectural patterns of large-scale web applications, including well-designed APIs, high-volume data pipelines, and efficient algorithms.
• Demonstrated ability to make data-driven decisions, articulate technical trade-offs, and communicate effectively with cross-functional partners.
• Passion for creating intuitive user experiences and a keen interest in data systems and analytics.
• Bachelor's degree in Computer Science or related field, or equivalent practical experience.
• Fluent in both English and Chinese.

Your Location:

This position is China - Remote Eligible. The role may include occasional work at an Airbnb office or attendance at offsites, as agreed to with your manager. Your recruiter will inform you what cities you are able to work from depending on your personal legal working identity and Airbnb internal policies.

Our Commitment To Inclusion & Belonging:

Airbnb is committed to working with the broadest talent pool possible. We believe diverse ideas foster innovation and engagement, and allow us to attract creatively-led people, and to develop the best products, services and solutions. All qualified individuals are encouraged to apply.