Kotlin Jobs in Hong Kong.
All active Kotlin roles based in Hong Kong.
Pick a job to read the details
Tap any role on the left — its description and apply link will open here.
Senior Product Security Engineer
Share this job
Qube Research & Technologies (QRT) is a global quantitative and systematic investment manager, operating in all liquid asset classes across the world. We are a technology and data driven group implementing a scientific approach to investing. Combining data, research, technology, and trading expertise has shaped our collaborative mindset, which enables us to solve the most complex challenges. QRT’s culture of innovation continuously drives our ambition to deliver high quality returns for our investors.
Your future role within QRT
You will join the Security team, working closely with Software Engineers and Infrastructure teams to embed security into the design, development, and operation of systems across cloud services, business applications, and core infrastructure.
- Support the implementation and operation of product security controls across cloud services, core infrastructure, and business applications on Windows and Linux platforms
- Work with engineering teams to integrate security into system design and development, applying practical approaches suitable for fast-moving environments
- Contribute to secure software development practices, including supporting security reviews across languages such as Python, C++, Rust, Go, and Kotlin/Java
- Perform threat modelling, vulnerability assessments, and security code reviews with guidance from senior team members
- Assist with integrating and operating security tooling (e.g., SAST, DAST, dependency scanning) within CI/CD pipelines and runtime environments
- Identify security risks and contribute to remediation and mitigation plans with engineering teams
- Perform vendor security reviews to assess third-party security practices against internal standards
- Build your product security knowledge and share learnings with peers across engineering teams
Requirements:
- 3–5 years of experience in product security, application security, software engineering, or a related role
- Hands-on experience with secure coding practices and at least one of: Python, C++, Rust, Go, Kotlin/Java
- Solid technical foundation in software development, system architecture, or infrastructure, with a strong interest in security
- Working knowledge of security principles and common vulnerabilities affecting software, cloud platforms, and business applications
- Experience securing Windows and/or Linux-based systems
- Practical experience with at least one cloud platform (AWS or Microsoft Azure), ideally in hybrid environments
- Familiarity with threat modelling, vulnerability management, and risk assessment concepts
- Experience using or integrating security scanning tools into development workflows and/or CI/CD pipelines
- Strong problem-solving skills, clear communication, and willingness to learn in a fast-paced environment
- Exposure to low-latency or performance-sensitive systems
- Experience in financial services and/or regulated environments
- Interest in automation and security tooling development
QRT is an equal opportunity employer. We welcome diversity as essential to our success. QRT empowers employees to work openly and respectfully to achieve collective success. In addition to professional achievement, we are offering initiatives and programs to enable employees achieve a healthy work-life balance.
Ready to apply?
Apply to Qube Research & Technologies
Senior Software Engineer, Core Experiences - Hong Kong, Hong Kong
Share this job
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.
Ready to apply?
Apply to Speechify
Who We Are
About the Opportunity
As a mobile software engineer, you will build and maintain core OKX app with millions of daily active users. You will work cross-functionally with design, product and other engineering teams to identify customer needs, and ship high-quality new features through fast iterations. This is an opportunity to learn the full life cycle of crypto mobile application including pro/retail trading, asset management and wallet.
What You’ll Be Doing
- Part of a global mobile team, developing new features for the all-in-one Android app.
- Strive for performance optimization and maximize customer satisfaction.
- Stay on top of industry trends, and evaluate new solutions to address our unique and fast-growing business needs.
- Work closely with design and product teams, and turn design ideas into quality features that scale to millions of users.
- Collaborate with global development teams, and deliver customized solutions targeting international users while maintaining consistency with the overall architecture.
- Maintain high-quality technical documentation and improve efficiency in cross-office/timezone cooperation.
What We Look For In You
- Experience in either native Android development, or cross-platform solutions like ReactNative/Flutter/Lua is a plus.
- Fluent with at least one of the following languages: Java/Kotlin/JavaScript.
- Understanding of common data structures and algorithms.
- Embrace agile development process including TDD, CI and Scrum.
- Passionate about mobile technology and building applications for a large user base
- Experience in Camera application development and image processing is preferred
Perks & Benefits
- Competitive total compensation package
- L&D programs and Education subsidy for employees' growth and development
- Various team building programs and company events
- Wellness and meal allowances
- Comprehensive healthcare schemes for employees and dependants
- More that we love to tell you along the process!
Disclaimer: Please note that Hong Kong is a group-level service hub, and OKX does not carry on a business of operating a virtual asset trading platform in Hong Kong.LI-ONSITE
#LI-CCH
Ready to apply?
Apply to OKX
Nex is on a mission to help families rediscover the joy of movement. Created by parents for parents, Nex combines technology and play to deliver fun, social, and interactive experiences powered by natural body motion, encouraging kids and adults to move more, play more, and have fun together. Nex Playground, the company’s award-winning active play system, is purpose-built to get families moving year-round, with safety and privacy as core considerations in its intentional design. It is certified kidSAFE+ COPPA compliant and built to support healthy, active play for all ages and abilities.
Nex Playground features a growing library of 50+ experiences, including motion and dance games, fitness and educational experiences, and Nex Originals. Content includes collaborations with partners like Hasbro, Sesame Workshop, and NBCUniversal. Nex has been recognized by Fast Company’s Most Innovative Companies, TIME’s Best Inventions, and Parents’ Best Entertainment System for Families, and has earned Red Dot, IDEA, and Core77 international design awards. We encourage you to explore Have Fun and Is Motion Gaming Back?, as they offer a deeper look into our culture, values, and explain how our approach to motion gaming differs from previous generations.
To protect yourself from recruitment scams, please note that Nex communicates through official company emails ending in @nex.inc. If you receive a suspicious email or message, please do not respond and report it immediately to us.
Location: Hong Kong
Type: Full Time
The Role
As our Software Engineer, Developer Experience, you will help shape the future of interactive physical gaming and realize Nex’s very bold vision: “Create the best motion games for hundreds of millions of people to play on”. We build tools and frameworks so that exciting game ideas can be brought to fruition. We also coordinate deployments so that our customers can play our experiences in home, in game shows and interactive demos at retail locations.
What You'll Do
- Understand bottlenecks and pain points of game developers, including designers and fellow engineers.
- Build tools to streamline game developments, from brainstorming, development to deployment.
- Support external studios implement games with our technology stack.
- Collaborate with our producer team to ensure smooth delivery of games and contents in our content pipeline.
- Help push the boundaries through active exploration, refinement of processes, and adoption of new technologies.
- Participate in knowledge sharing, technical discussions and code reviews.
Must Have
- 3–5 years of software development experience.
- Proficiency in one or more of the following: C#, Kotlin, Python, or JavaScript.
- Experience maintaining software libraries and / or writing documentation.
- Experience with tooling and automation.
Should Have
- An obsession with code and product quality.
- A growth mindset, always looking for more.
- Excitement about working in a high-growth, fast-paced environment.
Nice to Have
- 2+ years of hands-on experience with Unity.
- Experience with full-stack development, from frontend to backend.
- Experience building and shipping products using Unity.
- A love for staying active and healthy, with a passion for helping others do the same.
- An interest in playing games and excitement about game development.
We Offer
- Competitive compensation package.
- Flexible working hours and vacation policy.
- Product-driven culture that treasures talents and individual growth.
- Front-row seat and hands-on experience with cutting edge technologies in the evolving gaming field
Nex is located in San Jose, California, USA and Hong Kong. Learn more about us at nex.inc/who-we-are.
We encourage applications even if you don’t meet more than 50% of the requirements — we believe that experience comes in many forms!
Nex is an equal opportunity employer and does not discriminate on the basis of race, color, religion, sex (including pregnancy, childbirth, gender identity, and sexual orientation), national origin, ancestry, age, physical or mental disability, medical condition, genetic information, marital status, military or veteran status, or any other characteristic protected by applicable law. This policy applies to all individuals at every stage of the employment relationship, including all current and prospective employees, and covers all employment decisions including recruitment, hiring, job assignment, promotion, compensation, benefits, training, discipline and termination.
We are committed to providing a workplace free from discrimination and harassment and to fostering an inclusive environment for all employees.
Ready to apply?
Apply to Nex
Expert Application Security Engineer (iOS)
Share this job
-
Identify and address security vulnerabilities in code, systems, and networks using manual review, automated tools, and threat modeling.
-
Manage and optimize application security tools, processes, and alerts.
-
Validate and respond to Bug Bounty submissions.
-
Stay informed on the latest offensive security techniques, application security threats, and best practices, and suggest improvements to enhance our security posture.
-
Produce detailed reports of your findings, present them to both management and technical teams, and contribute to preventing real-world attacks.
-
Collaborate with development teams to implement secure coding practices.
-
Work alongside other teams, including operations and compliance, to ensure that security is a consistent priority across the organization.
-
Participate in incident response and management activities.
-
3+ years of experience in offensive security techniques.
-
In-depth understanding of security risks, vulnerabilities, and concepts in web and mobile applications.
-
Proficient in code review, particularly with Kotlin/Swift/Typescript/JavaScript, with a strong grasp of application security threats.
-
Ability to create proof-of-concepts (PoCs) to demonstrate vulnerabilities, review patch code for adherence to standards, and collaborate with repository owners and maintainers.
-
Strong analytical and problem-solving abilities.
-
Excellent verbal and written communication skills.
-
Prior experience in developing mobile security SDKs with a daily active user base of over ten million is preferred.
-
Participated in large-scale business risk control projects, or have practical experience in threat intelligence/business risk prevention, and analysis/countermeasures against black and gray industries.
-
In-depth reverse engineering of major apps from first-tier vendors, or other experiences/projects that demonstrate reverse engineering capabilities.
-
Priority given to candidates who can simultaneously master relevant technologies on multiple platforms.
-
Proficient in ARM assembly, capable of deep-level countermeasures at the native and application layers.
-
Have certain capabilities in device fingerprint recognition, able to simulate new devices through methods such as flashing, modification, and application cloning.
-
Competitive total compensation package
-
L&D programs and Education subsidy for employees' growth and development
-
Various team building programs and company events
-
More that we love to tell you along the process!
Ready to apply?
Apply to OKX
Mobile Software Engineer
Share this job
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.
Ready to apply?
Apply to Hyphen Connect Limited
Web3 Incubator Lab - Tech Lead (Blockchain / Projects)
Share this job
Reports to: Founder / CTO
About the Company
Our partner, a leading Web3 incubator in Asia, is shaping the future of the digital economy through a diverse portfolio of crypto ventures in payments, wallets, lending, data, AI, and asset management. With a global team of researchers, engineers, operators, and crypto experts, the incubator takes a hands-on approach, supporting its portfolio companies from ideation to market-ready solutions.
About the Role
We are seeking a skilled Tech Lead to oversee technical execution across our incubator’s diverse crypto portfolio, managing engineers and collaborating with the Technical Project Manager to ensure smooth project delivery. Reporting to the Founder or CTO, the Tech Lead will juggle multiple projects, provide hands-on coding expertise, architect innovative solutions, and support hiring for portfolio teams. With a strong blockchain background and experience in fintech, banking, insurtech, or AI, you will drive technical excellence while delivering clear progress updates to the executive team.
Key Responsibilities
- Technical Leadership: Lead and mentor engineers (Full Stack, Web3/Backend, Mobile) across portfolio projects, ensuring high-quality code and alignment with technical goals.
- Hands-On Coding: Actively contribute to development, writing code for blockchain integrations, backend systems, focusing on Web3 and high-throughput technologies.
- Solution Architecture: Design scalable, secure architectures for portfolio projects, integrating blockchain protocols (e.g., Ethereum, Solana), microservices, or AI pipelines as needed.
- Project Coordination: Partner with the Technical Project Manager to juggle multiple projects, aligning timelines, resources, and deliverables across payments, wallets, lending, data, AI, and asset management ventures.
- Hiring & Team Building: Collaborate with the executive team to define technical hiring needs, evaluate candidates, and build high-performing engineering teams for portfolio companies.
- Cross-Portfolio Synchronization: Ensure technical consistency and efficiency across diverse projects, resolving bottlenecks and maintaining project flow.
- Blockchain Expertise: Drive Web3-related initiatives, such as smart contract development, DeFi platforms, or wallet integrations, leveraging deep blockchain knowledge.
- Innovation & Problem Solving: Identify opportunities to incorporate emerging technologies (e.g., AI, decentralized systems) to enhance portfolio outcomes.
What We’re Looking For
- Experience: 8+ years in software engineering, with 4+ years in a technical leadership or lead engineer role. Strong blockchain experience (e.g., smart contracts, DeFi, wallet development) is preferred. Prior work in fintech, banking, insurtech, AI, or high-throughput systems is a strong plus.
- Technical Skills:
- Blockchain: Expertise in Solidity, Rust, or similar for smart contracts; familiarity with Web3 libraries (e.g., ethers.js, web3.js) and protocols (e.g., Ethereum, Solana).
- Backend: Proficiency in Node.js, Python, Go, or Rust for building scalable systems, APIs, and microservices.
- AI/Data: Experience with AI pipelines or data platforms (e.g., TensorFlow, Apache Kafka) is a plus.
- Frontend/Mobile: Basic familiarity with React/Native, Kotlin, or Swift to guide full stack and mobile engineers.
- Hands-On Coding: Proven ability to write high-quality code while balancing leadership responsibilities, particularly in Web3 or complex systems.
- Solution Architecture: Track record of designing robust, scalable architectures for blockchain, fintech, or AI-driven applications.
- Leadership & Mentorship: Experience managing small engineering teams, fostering collaboration, and mentoring junior developers.
- Multi-Project Management: Ability to juggle multiple projects, coordinating with project managers to ensure smooth delivery and consistent project flow.
- Communication: Exceptional verbal and written skills to report progress to executives, support project managers, and align technical and business stakeholders.
- Hiring Involvement: Familiarity with technical recruiting, candidate evaluation, and building diverse, high-performing teams.
- Passion: Deep enthusiasm for blockchain, Web3, and innovative technologies, with a commitment to driving the incubator’s portfolio forward.
Ready to apply?
Apply to Hyphen Connect Limited
Web3 Incubator Lab - Tech Lead (Blockchain / Projects)
Share this job
Reports to: Founder / CTO
About the Company
Our partner, a leading Web3 incubator in Asia, is shaping the future of the digital economy through a diverse portfolio of crypto ventures in payments, wallets, lending, data, AI, and asset management. With a global team of researchers, engineers, operators, and crypto experts, the incubator takes a hands-on approach, supporting its portfolio companies from ideation to market-ready solutions.
About the Role
We are seeking a skilled Tech Lead to oversee technical execution across our incubator’s diverse crypto portfolio, managing engineers and collaborating with the Technical Project Manager to ensure smooth project delivery. Reporting to the Founder or CTO, the Tech Lead will juggle multiple projects, provide hands-on coding expertise, architect innovative solutions, and support hiring for portfolio teams. With a strong blockchain background and experience in fintech, banking, insurtech, or AI, you will drive technical excellence while delivering clear progress updates to the executive team.
Key Responsibilities
- Technical Leadership: Lead and mentor engineers (Full Stack, Web3/Backend, Mobile) across portfolio projects, ensuring high-quality code and alignment with technical goals.
- Hands-On Coding: Actively contribute to development, writing code for blockchain integrations, backend systems, focusing on Web3 and high-throughput technologies.
- Solution Architecture: Design scalable, secure architectures for portfolio projects, integrating blockchain protocols (e.g., Ethereum, Solana), microservices, or AI pipelines as needed.
- Project Coordination: Partner with the Technical Project Manager to juggle multiple projects, aligning timelines, resources, and deliverables across payments, wallets, lending, data, AI, and asset management ventures.
- Hiring & Team Building: Collaborate with the executive team to define technical hiring needs, evaluate candidates, and build high-performing engineering teams for portfolio companies.
- Cross-Portfolio Synchronization: Ensure technical consistency and efficiency across diverse projects, resolving bottlenecks and maintaining project flow.
- Blockchain Expertise: Drive Web3-related initiatives, such as smart contract development, DeFi platforms, or wallet integrations, leveraging deep blockchain knowledge.
- Innovation & Problem Solving: Identify opportunities to incorporate emerging technologies (e.g., AI, decentralized systems) to enhance portfolio outcomes.
What We’re Looking For
- Experience: 8+ years in software engineering, with 4+ years in a technical leadership or lead engineer role. Strong blockchain experience (e.g., smart contracts, DeFi, wallet development) is preferred. Prior work in fintech, banking, insurtech, AI, or high-throughput systems is a strong plus.
- Technical Skills:
- Blockchain: Expertise in Solidity, Rust, or similar for smart contracts; familiarity with Web3 libraries (e.g., ethers.js, web3.js) and protocols (e.g., Ethereum, Solana).
- Backend: Proficiency in Node.js, Python, Go, or Rust for building scalable systems, APIs, and microservices.
- AI/Data: Experience with AI pipelines or data platforms (e.g., TensorFlow, Apache Kafka) is a plus.
- Frontend/Mobile: Basic familiarity with React/Native, Kotlin, or Swift to guide full stack and mobile engineers.
- Hands-On Coding: Proven ability to write high-quality code while balancing leadership responsibilities, particularly in Web3 or complex systems.
- Solution Architecture: Track record of designing robust, scalable architectures for blockchain, fintech, or AI-driven applications.
- Leadership & Mentorship: Experience managing small engineering teams, fostering collaboration, and mentoring junior developers.
- Multi-Project Management: Ability to juggle multiple projects, coordinating with project managers to ensure smooth delivery and consistent project flow.
- Communication: Exceptional verbal and written skills to report progress to executives, support project managers, and align technical and business stakeholders.
- Hiring Involvement: Familiarity with technical recruiting, candidate evaluation, and building diverse, high-performing teams.
- Passion: Deep enthusiasm for blockchain, Web3, and innovative technologies, with a commitment to driving the incubator’s portfolio forward.
Ready to apply?
Apply to Hyphen Connect Limited