Why Kimchi?

Kimchi is the AI platform inside CAST AI. We started by helping companies run LLMs on their own Kubernetes clusters - now we're building the execution layer where agents do real work.

Our Infrastructure today: multi-model inference (MiniMax, Kimi, GLM-5, Nemotron, DeepSeek) with intelligent routing, an OpenAI-compatible API, and deployment flexibility from our GPUs to your VPC. The inference layer is the foundation. What we're hiring for sits on top of it: coding agents, agent runtimes, orchestration systems, and the reliability engineering that makes them actually finish things.

Tech Stack: TypeScript, Go, Kubernetes, AWS/GCP/Azure, MCP, Prometheus/Grafana/Loki, GitLab CI, ArgoCD.

Why harness engineering matters here
OpenAI and Anthropic ship models. They also ship one harness each - the scaffolding that turns a raw model into something that can plan, execute, recover, and complete work. We ship a different kind of harness: one built for cost-conscious, long-horizon autonomy, running on inference infrastructure we control end-to-end.
A decent model with a great harness beats a great model with a bad harness. We've watched this play out. The gap between what today's models can do and what you see them doing is largely a harness gap - and that gap is where we operate.

What you'll build
The ratchet.
Every time our agent makes a mistake, we engineer a solution so it never makes that mistake again. That means hooks that enforce constraints the model "knows" but forgets: pre-commit lint checks, permission gates, context compaction before the window fills. Success is silent, failures are verbose.

Long-horizon execution.
Our harness is built around spec-driven autonomy: meta-prompting, fresh context per task, worktree-per-slice git strategy, automatic replanning, crash recovery, stuck detection. We're implementing Ralph loops - when the model tries to exit, we intercept and reinject the goal into a fresh context. The agent reads state from disk and continues. Multi-session, multi-day work, without context rot.

Planner/executor splits.
Planning with a reasoning model, executing with a fast one, evaluating with a third. Separating generation from evaluation beats self-verification because agents reliably skew positive when grading their own work.

The harness surface.
CLI, TUI, MCP integration, sandboxed execution, telemetry. Our AGENTS.md is short - every line traces to a specific thing that went wrong. TypeScript on the surface, Go where it matters.

Memory and context.
Moving agents off laptops, giving them state that survives across sessions, managing context so information lands where it's actionable. Compaction, tool-call offloading, progressive skill disclosure.

What makes this different (with receipts)
You've seen the pitch: "we route to the best model." Everyone says that. Here's what we actually have:

• GPU infrastructure we own. Not just an API reseller. From GPU placement across clouds to the inference endpoint your agent calls - we control the cost curve.
• A harness-first thesis. We treat agent failures as configuration problems, not model problems. When we moved from a stock harness to our own, completion rates on internal benchmarks improved by 40%+ on the same model.
• Agents.md that earns every line. No brainstormed rules - every constraint in our system prompt traces to a real failure we saw and fixed.

Requirements:

• You've used AI coding agents in anger. Not demos - real work. You have opinions about Claude Code, Codex, OpenCode, Cursor. You know what it feels like when an agent gets stuck and why.
• Strong TypeScript or Go in production. Comfort moving between them. Our surface is TypeScript; our core is Go.
• You think in harness terms. You read "the agent hallucinated" and your first instinct is to ask what context it was missing, what hook should have caught it, what constraint should exist.
• You drive features end-to-end. Design → build → ship → measure → iterate. We don't have layers that absorb ambiguity for you.

Responsibilities:

• Build and evolve the agent harness - ship hooks, permission gates, and context compaction. Every AGENTS.md constraint traces to a failure you personally diagnosed.
• Own long-horizon execution - multi-session task completion via spec-driven prompting, worktree-per-slice git, Ralph loop recovery, and stuck detection. Completion rate is your metric.
• Architect planner/executor/evaluator pipelines - planning with a reasoning model, execution with a fast one, evaluation with a third. No self-verification.
• Manage agent memory and context - state persistence across sessions, context compaction, tool-call offloading. Zero context rot on multi-day work.
• Own the harness surface - CLI, TUI, MCP integrations, sandboxed execution, telemetry. TypeScript on the surface, Go where it matters.

What success looks like (after 6 months):

• You've shipped at least one major harness feature end-to-end: designed it, built it, measured it, iterated.
• You've added constraints to our AGENTS.md based on failures you personally observed and diagnosed.
• You've improved a measurable reliability metric - completion rate, context efficiency, or cost per successful task.
• You've formed strong opinions about where our harness is load-bearing and where it's dead weight.

What’s in it for you?

• Competitive salary (€6,500 - €9,000 gross, depending on the level of experience).
• Enjoy a flexible, remote-first global environment.
• Collaborate with a global team of cloud experts and innovators, passionate about pushing the boundaries of Kubernetes technology
• Equity options.
• Get quick feedback with a fast-paced workflow. Most feature projects are completed in 1 to 4 weeks.
• Spend 10% of your work time on personal projects or self-improvement. 
• Learning budget for professional and personal development - including access to international conferences and courses that elevate your skills.
• Annual hackathon to spark new ideas and strengthen team bonds.
• Team-building budget and company events to connect with your colleagues.
• Equipment budget to ensure you have everything you need.
• Extra days off to help maintain a healthy work-life balance.

This is a location-specific opportunity. We are currently accepting applications from candidates residing in the following European countries: Bulgaria, Croatia, Estonia, Greece, Hungary, Latvia, Lithuania, Poland, Romania, Slovakia, Slovenia, and Ukraine.

*As part of our standard hiring process, we would like to inform you that a background check may be conducted at the final stage of recruitment through our third-party provider, Checkr.
*Please note that Cast AI does not provide any form of visa sponsorship/work permit.

#LI-Remote

We are looking for a Catalog Operations Manager (Grocery & Retail) to own and elevate the global catalog quality for Grocery & Retail merchants at Bolt Food.

With over 200 million customers in 50+ countries, Bolt is one of the fastest-growing tech companies in Europe and Africa. And it's all thanks to our people.

We believe in creating an inclusive environment where everyone is welcome, regardless of race, colour, religion, gender identity, sexual orientation, age, or disability.

Our ultimate goal is to make cities for people, not cars, and we need your help to achieve this mission!

As a Catalog Operations Manager, you will you will ensure that our platform accurately reflects the breadth and quality of products available in our merchants’ physical stores - driving SKU accuracy, product discoverability, and overall menu quality to deliver a best-in-class customer experience and unlock commercial growth.

• Take ownership of end-to-end projects, turning complex challenges into streamlined, high-impact solutions.
• Influence the roadmap by identifying market trends and translating them into actionable growth opportunities.
• Work shoulder-to-shoulder with cross-functional teams to ensure a seamless, world-class user experience.
• Analyze key performance metrics to refine processes, ensuring our operations are as lean as they are effective.
• Act as a technical or operational North Star, fostering a culture of excellence and continuous learning within the team.
• et the gold standard for every deliverable, ensuring our brand remains synonymous with reliability and innovation.

• You don’t just meet targets; you have a history of smashing them in fast-paced, evolving environments.
• You possess the "detective" skills to dive deep into data and the "architect" skills to build from your findings.
• You can distill technical jargon into "boardroom-ready" insights that inspire stakeholders at all levels.
• You thrive in the "grey area," pivoting quickly when priorities shift without losing sight of the finish line.
• You are a power user of Excel/G-Sheet skills are a must (Python or SQL knowledge is a plus.
• You’re not looking for a "desk job"—you’re looking for a platform where your ambition and curiosity are rewarded.

Experience is great, but what we really look for is drive, intelligence, and integrity. So even if you don’t tick every box, please consider applying!

• Accelerate your professional growth with unique career opportunities.
• Enjoy a rewarding salary and stock options, knowing that as Bolt succeeds, so do you.
• Take care of your physical and mental health with our wellness perks.
• Celebrate 5 years at Bolt with a 1-month paid sabbatical to recharge.
• Connect with colleagues at annual company events and smaller team gatherings.
• Balance flexibility and in-person collaboration with our hybrid model, including at least 12 monthly in-office days.

*Some perks may differ depending on your location and role.

We are looking for a Catalog Operations Manager (Grocery & Retail) to own and elevate the global catalog quality for Grocery & Retail merchants at Bolt Food.

With over 200 million customers in 50+ countries, Bolt is one of the fastest-growing tech companies in Europe and Africa. And it's all thanks to our people.

We believe in creating an inclusive environment where everyone is welcome, regardless of race, colour, religion, gender identity, sexual orientation, age, or disability.

Our ultimate goal is to make cities for people, not cars, and we need your help to achieve this mission!

As a Catalog Operations Manager, you will you will ensure that our platform accurately reflects the breadth and quality of products available in our merchants’ physical stores - driving SKU accuracy, product discoverability, and overall menu quality to deliver a best-in-class customer experience and unlock commercial growth.

• Take ownership of end-to-end projects, turning complex challenges into streamlined, high-impact solutions.
• Influence the roadmap by identifying market trends and translating them into actionable growth opportunities.
• Work shoulder-to-shoulder with cross-functional teams to ensure a seamless, world-class user experience.
• Analyze key performance metrics to refine processes, ensuring our operations are as lean as they are effective.
• Act as a technical or operational North Star, fostering a culture of excellence and continuous learning within the team.
• et the gold standard for every deliverable, ensuring our brand remains synonymous with reliability and innovation.

• You don’t just meet targets; you have a history of smashing them in fast-paced, evolving environments.
• You possess the "detective" skills to dive deep into data and the "architect" skills to build from your findings.
• You can distill technical jargon into "boardroom-ready" insights that inspire stakeholders at all levels.
• You thrive in the "grey area," pivoting quickly when priorities shift without losing sight of the finish line.
• You are a power user of Excel/G-Sheet skills are a must (Python or SQL knowledge is a plus.
• You’re not looking for a "desk job"—you’re looking for a platform where your ambition and curiosity are rewarded.

Experience is great, but what we really look for is drive, intelligence, and integrity. So even if you don’t tick every box, please consider applying!

• Accelerate your professional growth with unique career opportunities.
• Enjoy a rewarding salary and stock options, knowing that as Bolt succeeds, so do you.
• Take care of your physical and mental health with our wellness perks.
• Celebrate 5 years at Bolt with a 1-month paid sabbatical to recharge.
• Connect with colleagues at annual company events and smaller team gatherings.
• Balance flexibility and in-person collaboration with our hybrid model, including at least 12 monthly in-office days.

*Some perks may differ depending on your location and role.

We’re looking for a Senior Design System Engineer to take ownership of the technical architecture of our multi-platform design system. You’ll work directly with design system designers and platform engineering teams to take the way we build user interfaces at Bolt to the next level.

With over 200 million customers in 53+ countries, Bolt is one of the fastest-growing tech companies in Europe and Africa. And it's all thanks to our people.

We believe in creating an inclusive environment where everyone is welcome, regardless of race, colour, religion, gender identity, sexual orientation, national origin, age, or disability.

Our ultimate goal is to make cities for people, not cars, and we need your help to achieve this mission!

In this role you work daily with Designer System Designers, representing engineering interests. You will drive core design system initiatives from the engineering side, ensuring our design foundations scale effectively across all platforms and products. You will help shape design system strategy, align teams and contribute code.

This role is part of our Web Architecture and Visual Experience (WAVE) team. WAVE is responsible for the web platform, design system implementation for web and providing engineering support for the design system core. 

You will get to own large projects that cover all platforms and can change how Bolt thinks about shipping user interfaces. Feeling passionate about accessibility? How about changing the way product teams across Bolt consider accessibility in their work and shipping practical improvements to hundreds of millions people? 

• Own the technical vision. Architect platform-agnostic infrastructure like design tokens, Figma plugins and shared utilities. Promote best practices and facilitate technical discussions.
• Align engineering platform teams around shared design system goals and priorities.
• Shape the vision, strategy and roadmap for the design system, representing engineering interests.
• Develop technical metrics for the Design System.
• Advocate for the design system to the engineering organisation.
• Drive continuous improvement, identify opportunities and lead them.

• You have worked in a design system team or as a contributor to a design system initiative.
• You have led engineers in complex cross-team projects. Ideally, in a multi-platform setting.
• You have practical experience working with multiple platforms (web + iOS/Android/React Native)
• You are a strong communicator, capable of representing diverse interests.
• You are a systems thinker, comfortable navigating in ambiguity.

Experience is great, but what we really look for is drive, intelligence, and integrity. So even if you don’t tick every box, please consider applying if you feel you’re the kind of person described above!

• Play a direct role in shaping the user experience of one of Europe’s leading platforms.
• Impact millions of customers and partners in 600+ cities across 53 countries
• Work in fast-moving autonomous teams with some of the smartest people in the world
• Accelerate your professional growth with unique career opportunities
• Get a rewarding salary and stock option package that lets you focus on doing your best work
• Enjoy the flexibility of working in a hybrid mode with a minimum of 2 days in the office each week to foster strong connections and teamwork
• Take care of your physical and mental health with our wellness perks

*Some perks may differ depending on your location and role.

About the Role:

We’re looking for an experienced QA Automation Engineer (Mobile/Android) to take the lead in ensuring our global security products meet the highest bars of reliability. In this role, you won’t just run tests; you’ll architect and scale automation solutions for our VPN portfolio (HotspotShield, Betternet) and our flagship antivirus (UltraAV). We are agile, work quickly, and focus on outcomes. We trust our team to build the best solution to help us scale for the future.

Day to Day:

• Architect and evolve our Android automation framework (Espresso/Kakao-Cup) to support a growing portfolio of security products.
• Design sophisticated testing strategies for VPN-specific challenges, including network-dependent flows and testing under unstable or switching connection states.
• Work closely with developers and other QAs to troubleshoot and resolve issues, offering detailed bug reports.
• Uphold QA best practices and contribute to driving the QA strategy.
• Continuously explore new testing tools and methodologies to enhance the QA process.

What you bring to the table:

• At least 3 years of experience in automating UI tests for Android apps written in Kotlin
• Strong hands-on expertise with Espresso and Kakao-Cup, with the ability to test screens built in both Jetpack Compose and classic XML.
• Experience with Robolectric and Mockito for test infrastructure and mocking dependencies.
• You’re comfortable building and maintaining pipelines in CircleCI and using Bash/sh scripting for automation and result processing.
• Experience sharding and parallelizing tests using Flank, and configuring device matrices within Firebase Test Lab or similar emulators.
• An understanding of the specific challenges of testing VPN apps, such as network-dependent flows and handling connection-state flakiness.
• At least upper-intermediate level of spoken and written English

It would be great if you also had:

• Experience maintaining UI test suites across multiple apps in both mono- and multi-repo setups.
• High level of comfort with ADB, log analysis, and a working understanding of the Android build process via Gradle (Kotlin DSL).
• Experience testing A/B frameworks, including covering feature-flagged flows and variant-dependent UI.
• Familiarity with testing Google Play Billing integrations (subscriptions, purchase flows, and edge cases).

Why Join Us?

• Professional Growth: Enhance your skills by collaborating closely with talented engineers and architects.
• Meaningful Impact: Help create software that protects millions of users from cybersecurity threats.
• Supportive Environment: Join a team dedicated to innovation, mentorship, and continuous learning.

RSI is seeking a Database Architect to help shape and grow the company's database platform and capability through guidance, enablement, and collaboration. This role works alongside DBAs, engineers, and analytics teams to develop shared standards, foster good architectural thinking, and help teams make confident, well-informed decisions about database design across both relational and non-relational technologies.

A key focus of the role is helping teams understand and adopt data contracts, versioned agreements that describe schemas, semantics, quality expectations, SLAs, and change policies. Rather than mandating compliance, the Architect acts as a trusted advisor and internal expert, building the knowledge and tooling that makes doing the right thing the easy thing.

The Database Architect works closely with database engineering, product engineering, infrastructure platform, and BI & Analytics teams, influencing through expertise, mentorship, and practical enablement. While organizationally sitting within the Architecture team, this role has a dotted-line relationship to the Database Engineering Manager, ensuring tight day-to-day collaboration with the engineering team and a shared stake in their growth and success.

What You'll Do:

Architecture and Standards

• Develop and share database architecture patterns and best practices across both relational and non-relational technologies covering schema design, data modelling, high availability, disaster recovery, and performance, offering guidance teams can draw on rather than directives they must follow.
• Help teams select the right database technology for their use case, whether relational, document, key-value, graph, or time-series, based on access patterns, scale, and consistency requirements.
• Lead collaborative efforts to define data contracts for in-house products, working with teams to shape schemas, semantics, quality expectations, change policies, and SLAs in a way that makes sense for their context and chosen technology.
• Create decision frameworks and reference materials that help teams design compliant and scalable database solutions independently.

Governance and Data Quality

• Champion data contract principles by helping teams understand their value and how to apply them with a focus on reducing risk for downstream consumers through shared understanding, not top-down enforcement.
• Partner with Analytics, product, and security teams to explore how contract metadata, validations, and policy checks can be woven into CI/CD pipelines and production workflows in practical, low-friction ways.
• Support teams in managing versioning, deprecation, and change notifications, helping them build sustainable habits around schema evolution, including schema-on-read and flexible schema patterns common in non-relational systems.

Cross-Team Collaboration

• Join architecture and design conversations early in the development lifecycle, offering a perspective that helps teams spot risks and opportunities before they become problems.
• Work alongside engineers and DBAs to integrate data contracts into tooling and monitoring, making traceability and observability a natural part of how teams work rather than an afterthought.

Enablement and Coaching

• Mentor engineers and DBAs on data contract design, from schema stability to SLA definition, building genuine understanding of the downstream impact of their decisions.
• Develop reusable frameworks, templates, and examples for data contracts that teams can adapt and build on, reducing the barrier to doing things well.
• Serve as a go-to resource and sounding board on database architecture topics, both relational and non-relational, helping individuals and teams grow their expertise over time.

What You'll Bring:

• Bachelor’s or Master’s degree in Computer Science or related field.
• 5+ years of experience in database design, data modelling or database engineering roles with a strong relational foundation and exposure to non-relational systems.
• Strong expertise in relational databases (PostgreSQL, Oracle preferred), including a solid understanding of RDBMS internals, performance considerations, and architectural trade-offs.
• Experience with database architecture design patterns, data modelling standards, high-availability strategies, and schema evolution.
• Familiarity with non-relational database technologies such as document stores, key-value stores, wide-column stores, graph databases, and time-series databases and an understanding of when and why to reach for them over a relational approach.
• Awareness of polyglot persistence approaches and how to govern data contracts across mixed database environments.
• Comfortable working in cloud-first or hybrid environments.
• Excellent communication and interpersonal skills — able to explain complex technical concepts clearly to a range of audiences and build trust with both technical and non-technical stakeholders.
• A collaborative, patient approach to working with teams, with a genuine interest in helping others develop their skills and confidence.
• Able to travel occasionally both domestically and internationally #LI-REMOTE #LI-PROMOTE

Required:

• 3+ in Windows desktop application development using Windows App SDK, WinUI (or similar), C#, XAML — and ideally additional experience with native Windows code (C++, Win32/WinRT/COM).
• Deep understanding of Windows application architecture, including interop between managed code (.NET) and native code.
• Proven track record of designing, building, and shipping production-quality desktop applications, with an emphasis on reliability, performance, scalability, and maintainability.
• Strong experience with accessibility APIs on Windows (e.g. Microsoft UI Automation or similar), and a dedication to building accessible and inclusive software.
• Excellent software engineering fundamentals: OOP, design patterns, data structures, algorithms, memory management, multi-threading or asynchronous programming (where relevant).
• Experience leading technical design, mentoring other engineers, conducting code reviews, and making architecture-level decisions.
• Strong communication skills; ability to articulate tradeoffs, collaborate with cross-functional teams, and drive consensus.
• A user-centric mindset: focus on building polished, intuitive, and accessible experiences for end users.

Preferred / Bonus:

• Experience with writing automated tests for UI — unit tests, integration tests, UI automation tests; familiarity with relevant testing frameworks.
• Experience with performance optimization for desktop apps (memory usage, startup time, rendering performance, high-DPI support, responsiveness under load).
• Experience with localization/globalization, right-to-left UI support, internationalization, accessibility for multiple regions.
• Familiarity with telemetry, analytics, crash reporting, logging, and error monitoring in desktop applications.
• Previous experience in shaping CI/CD workflows, release pipelines, and deployment strategies for desktop applications.
• Demonstrated ability to take ownership of feature areas or modules and drive them long-term, including maintenance, refactoring, and technical debt management.

What we offer

• A high-impact role: you will define architecture, shape the future of our Windows product, and directly influence what millions of users see and experience.
• A collaborative, flat-structure engineering culture — you are not just a coder, but a builder and a decision-maker.
• Opportunities to lead — mentor others, steer technical direction, and grow into broader technical leadership (e.g. Tech Lead, Architect).
• Flexibility, autonomy, and responsibility: you define how to solve problems, own features end-to-end, and contribute to long-term product vision.
• A purpose-driven mission: building software that’s reliable, accessible, and user-centered — making a real difference for people.                  

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.

About the Role:  

Wrike’s Backend Reliability (BRE) team is the backbone of our backend infrastructure and the guardian of our uptime. Our mission is to achieve and sustain 99.99% availability while building the tools, components, and safety nets that the entire engineering organization relies on. As a Senior / Staff Backend Engineer on this team, you won’t just close tickets - you’ll architect core reliability solutions that shape how Wrike scales, performs, and recovers from failure.

Your Impact:  

• Design, build, and maintain critical reliability components such as HTTP rate limiters, internal DB schema migration tools, circuit breakers, and distributed Redis-based caching.  
• Troubleshoot complex production issues, optimize PostgreSQL usage, and ensure our distributed systems remain performant and stable under high load.  
• Lead preliminary investigations during severe production incidents: identify likely root causes, assess impact, and propose mitigation options. The long-term fixes are then implemented by the owning team, based on your findings.  
• Create scalable, reusable tools and frameworks that help other engineering teams build more resilient services.  
• Leverage AI-powered tools and coding agents to accelerate development, analyze architectures, and automate repetitive or error-prone tasks.  
• Influence reliability best practices across engineering by sharing knowledge, reviewing designs, and setting high technical standards.

Your Qualifications:  

• Strong expertise with Java/JVM, building scalable, high-performance backend systems; open to leveraging other languages when appropriate.  
• Solid understanding of distributed systems concepts, including high availability, CAP theorem, and fault tolerance.  
• Deep experience with relational databases (PostgreSQL) and key–value / non-relational storages (Redis).  
• Practical experience with containerization and cloud-native environments, including Docker and Kubernetes.  
• Hands-on experience with message brokers such as RabbitMQ or Kafka.  
• Ability to work independently with minimal supervision, using critical thinking to question assumptions and validate your own decisions.  
• Strong written and spoken English skills suitable for collaborating in an international engineering environment.

Standout Qualities:  

• Background in infrastructure engineering or Site Reliability Engineering (SRE), including infrastructure-as-code practices.  
• Experience leading technical initiatives, driving cross-team projects, and mentoring other engineers while remaining an individual contributor.  
• Familiarity with observability and monitoring stacks (e.g., Graylog, Zabbix, Grafana) and/or data analytics tools such as BigQuery.  
• A strong interest in how complex systems fail and a track record of designing them to recover gracefully.

Team Dynamics:  

You will join the Backend Reliability (BRE) team, a small, highly specialized, senior group focused solely on Wrike’s reliability. The team operates as an internal “reliability task force,” partnering closely with product and platform engineering teams across the company. You’ll collaborate with other senior engineers who value autonomy, deep technical discussions, and rigorous engineering practices. The culture is ownership-driven: you are trusted to manage your time, make architectural decisions, and drive initiatives to completion.

Our Work Style:  

The BRE team works on core backend and infrastructure services that support millions of users. We operate in a collaborative environment that values clear communication, thoughtful design, and fast feedback loops.  

• Tech focus areas include: Java/JVM-based services, PostgreSQL, Redis, Docker, Kubernetes, RabbitMQ/Kafka, and observability/monitoring tools.  
• We encourage the use of modern AI-based tooling and coding agents as part of daily development and troubleshooting workflows.  
• Work is organized with an emphasis on impact and reliability goals rather than ticket volume, giving you room for deep work and long-term improvements.  
• Hybrid work mode (Prague, Czech Republic / Nicosia, Cyprus), with flexibility to balance focused individual work and collaborative sessions.

Why Join Wrike?

• 5 Weeks of paid vacation
• Sick Leave Compensation 
  • 5 Paid Uncertified Sick Days
  • 2 weeks fully paid w/ medical certificate, additional 
  • 4 weeks paid at 80% salary rate
• Parental Leave (fully paid): 18 Weeks Maternity / 4 Week Paternity 
• 2 Volunteer Days
• Meal Vouchers (CZK 220 per working day)
• Annual Prague Travel Card (Lítačka)
• Hybrid Working Model
• Benefit budget with flexible options, including a MultiSport card, Canadian Medical membership, contributions to a pension savings plan and additional choices available through Benefit Plus

What’s next?

• Interview with a Recruiter
• Technical interview
• System Design Interview
• Cultural interview 
  

Your recruitment buddy will be Aleksandar Chernev, Senior Technical Recruiter.

#LI-AC1 

About the Role:  

Wrike’s Backend Reliability (BRE) team is the backbone of our backend infrastructure and the guardian of our uptime. Our mission is to achieve and sustain 99.99% availability while building the tools, components, and safety nets that the entire engineering organization relies on. As a Senior / Staff Backend Engineer on this team, you won’t just close tickets - you’ll architect core reliability solutions that shape how Wrike scales, performs, and recovers from failure.

Your Impact:  

• Design, build, and maintain critical reliability components such as HTTP rate limiters, internal DB schema migration tools, circuit breakers, and distributed Redis-based caching.  
• Troubleshoot complex production issues, optimize PostgreSQL usage, and ensure our distributed systems remain performant and stable under high load.  
• Lead preliminary investigations during severe production incidents: identify likely root causes, assess impact, and propose mitigation options. The long-term fixes are then implemented by the owning team, based on your findings.  
• Create scalable, reusable tools and frameworks that help other engineering teams build more resilient services.  
• Leverage AI-powered tools and coding agents to accelerate development, analyze architectures, and automate repetitive or error-prone tasks.  
• Influence reliability best practices across engineering by sharing knowledge, reviewing designs, and setting high technical standards.

Your Qualifications:  

• Strong expertise with Java/JVM, building scalable, high-performance backend systems; open to leveraging other languages when appropriate.  
• Solid understanding of distributed systems concepts, including high availability, CAP theorem, and fault tolerance.  
• Deep experience with relational databases (PostgreSQL) and key–value / non-relational storages (Redis).  
• Practical experience with containerization and cloud-native environments, including Docker and Kubernetes.  
• Hands-on experience with message brokers such as RabbitMQ or Kafka.  
• Ability to work independently with minimal supervision, using critical thinking to question assumptions and validate your own decisions.  
• Strong written and spoken English skills suitable for collaborating in an international engineering environment.

Standout Qualities:  

• Background in infrastructure engineering or Site Reliability Engineering (SRE), including infrastructure-as-code practices.  
• Experience leading technical initiatives, driving cross-team projects, and mentoring other engineers while remaining an individual contributor.  
• Familiarity with observability and monitoring stacks (e.g., Graylog, Zabbix, Grafana) and/or data analytics tools such as BigQuery.  
• A strong interest in how complex systems fail and a track record of designing them to recover gracefully.

Team Dynamics:  

You will join the Backend Reliability (BRE) team, a small, highly specialized, senior group focused solely on Wrike’s reliability. The team operates as an internal “reliability task force,” partnering closely with product and platform engineering teams across the company. You’ll collaborate with other senior engineers who value autonomy, deep technical discussions, and rigorous engineering practices. The culture is ownership-driven: you are trusted to manage your time, make architectural decisions, and drive initiatives to completion.

Our Work Style:  

The BRE team works on core backend and infrastructure services that support millions of users. We operate in a collaborative environment that values clear communication, thoughtful design, and fast feedback loops.  

• Tech focus areas include: Java/JVM-based services, PostgreSQL, Redis, Docker, Kubernetes, RabbitMQ/Kafka, and observability/monitoring tools.  
• We encourage the use of modern AI-based tooling and coding agents as part of daily development and troubleshooting workflows.  
• Work is organized with an emphasis on impact and reliability goals rather than ticket volume, giving you room for deep work and long-term improvements.  
• Hybrid work mode (Prague, Czech Republic / Nicosia, Cyprus), with flexibility to balance focused individual work and collaborative sessions.

Why Join Wrike?

• 25 calendar days of paid vacation
• Sick Leave Compensation (5 Paid Uncertified Sick Days)
• Parental Leave: 18 Weeks Maternity / 4 Week Paternity 
• 2 Volunteer Days
• Medical Insurance (Employees + Dependents)
• Hybrid Working Model
• School Allowance (Up to €600/month for school aged kids)
• Simcard w/ Unlimited Internet Access for active employees
• Office Lunch Allowance (via Wolt) on Wednesdays / Thursdays

What’s next?

• Interview with a Recruiter
• Technical interview
• System Design Interview
• Cultural interview 
  

Your recruitment buddy will be Aleksandar Chernev, Senior Technical Recruiter.

#LI-AC1 

 
We’re looking for a seasoned Data Scientist to architect the next generation of our campaign optimization systems. You will design and scale the logic that determines which users to target and which incentives to deploy to maximize investment efficiency. If you’re excited to apply Machine Learning and Causal Inference to drive global impact, join us!

 

 
 
With over 200 million users in 50+ countries, Bolt is one of the fastest-growing tech companies in Europe and Africa. And it's all thanks to our people.

We believe in creating an inclusive environment where everyone is welcome, regardless of race, colour, religion, gender identity, sexual orientation, national origin, age, or ability.

Our ultimate goal is to make cities for people, not cars. And we need your help on this mission!
 

 
 
You’ll own Bolt’s campaign optimization systems end-to-end, architecting the "brain" that determines how we allocate rider and driver incentives globally. As a Senior Data Scientist, you will be the driving force in elevating our technical standards, pioneering solutions that bridge the gap between academic research and product development. You will serve as a technical "North Star"—mentoring colleagues and setting the bar for rigorous, maintainable data products that directly shape the experience of over 200 million customers worldwide.
 

 
 
  

• Lead the technical vision for our campaign optimization roadmap, translating high-level objectives into data science products.
• Architect and deploy end-to-end uplift models and optimization systems that maximize our investment efficiency.
• Design and execute advanced experimentation frameworks to reliably measure campaign incrementality.
• Set the gold standard for technical excellence by championing rigorous statistical and engineering practices.
• Serve as a mentor and advisor on highly technical challenges.
• Partner with Product, Engineering, and Operations to identify opportunities and develop pragmatic solutions that solve intricate business problems.

 
 

• Pragmatic problem solver, able to work autonomously from research to production deployment.
• 5+ years of experience in applied ML; experience in a growth role (marketplace pricing or incentives) is a plus.
• Exceptional knowledge of ML, statistics with hands-on experience in causal inference/ML.
• Expert proficiency in Python and SQL.
• A natural mentor who enjoys leveling up those around you and can explain the "why" behind complex mathematical concepts.
   

 
Experience is great, but what we really look for is drive, intelligence, and integrity. So even if you don’t tick every box, please consider applying!
 

 
 

• Play a direct role in shaping the future of mobility.
• Impact millions of customers and partners in 600+ cities across 50+ countries.
• Work in fast-moving autonomous teams with some of the smartest people in the world.
• Accelerate your professional growth with unique career opportunities.
• Get a rewarding salary and stock option package that lets you focus on doing your best work.
• Enjoy the flexibility of working in a hybrid mode with a minimum of 3 days in the office each week to foster strong connections and teamwork.
• Take care of your physical and mental health with our wellness perks.
   

  *Some perks may differ depending on your location and role.

Position Overview

The Shopify Developer is the technical engine behind our global digital storefronts. You will manage the technical evolution of both our B2B and Retail platforms, ensuring they are fast, accessible, and optimized for conversion. This role is central to our global expansion; you will spearhead the implementation of Shopify Markets and customize theme logic to meet the unique needs of international territories. We are looking for a self-motivated problem solver who bridges the gap between creative design and high-performance code.

Key Responsibilities

Theme Development & Optimization

• Build & Launch: Develop high-fidelity, responsive landing pages and custom theme sections to support marketing campaigns.
• Performance Engineering: Implement code-level improvements to enhance site speed (Core Web Vitals) and ensure full ADA compliance across all digital touchpoints.
• Technical SEO: Maintain best-in-class search visibility through optimized Liquid templates and structured data (JSON-LD).
• B2B & Retail Logic: Develop and maintain distinct theme customizations that cater to the different shopping behaviors of our wholesale and retail customers.

Global Expansion (Internationalization)

• Shopify Markets: Lead the technical setup and configuration of Shopify Markets to support multi-currency, multi-language, and regional content.
• Localization Logic: Architect theme solutions that adapt seamlessly to regional requirements without compromising global site stability or customer experience.

Collaboration & Code Quality

• Cross-Functional Partnership: Work closely with Marketing and Operations to translate business goals into technical solutions.
• Code Reviews: Actively participate in peer code reviews to ensure maintainability, security, and adherence to best practices.
• Documentation: Maintain clear documentation for custom integrations and theme modifications.
• Maintenance & Troubleshooting: Act as the first line of defense for support requests and bug fixes, identifying root causes to prevent recurrence.

Qualifications

Required:

• Core Stack: Strong foundational programming logic; you understand how to structure data and build for scalability, not just 'making it look right'. Exceptional proficiency in HTML, CSS, and JavaScript (Vanilla/ES6).
• Growth Mindset: A documented history of being a self-motivated, fast learner. You aren't afraid to dive into the "unknown" and enjoy tackling complex technical puzzles.
• Project Execution: A proactive self-starter who excels in an evolving roadmap. You enjoy seeing your work go live quickly and can effectively prioritize multiple workstreams to meet milestones during busy launch windows.
• Hybrid Collaboration: Strong verbal/written English. While based in Estonia, you must be comfortable working primarily via Google Meet and chat, collaborating with stakeholders across different time zones.

AI-Augmented Development: An active interest in the evolving landscape of AI-powered development. You are open to experimenting with agentic code editors like Cursor and understand how to leverage AI for debugging and documentation without compromising on fundamental engineering principles. 

Resourcefulness: Resourceful and autonomous; you are the type of developer who consults documentation, experiments with APIs, and finds the 'why' behind a bug before asking for a solution.

Preferred:

• Shopify Experience: 1+ years of professional Shopify development experience (Liquid, JSON schema, Shopify APIs).
• Code Portfolio: A portfolio or GitHub that demonstrates clean code and creative problem-solving (even if it’s not Shopify-specific).
• Modern Tools: Experience with React, version control (Git), and CI/CD workflows
• Global Collaboration: Experience working with distributed teams across varying time zones.
• Ownership & Accountability: You take pride in the stability and performance of our global storefronts, maintaining 100% accountability for the code you ship to production.
• Solution-First Thinking: You don’t just patch a bug; you investigate the root cause and implement long-term fixes that improve the overall health of the codebase.
• Continuous Learning: You stay curious about the evolving Shopify ecosystem and emerging web technologies, proactively suggesting ways to modernize our stack.
• Integrity & Confidentiality: You uphold high standards regarding the security of our customer data, proprietary logic, and upcoming product launches.

What we offer:

• Global & Supportive Culture: Grow alongside an innovative, industry-leading international brand.

• Hybrid Work: Hybrid work, 3 days  at vibrant office hub in Ülemiste, Tallinn.

• Premium Well-being: 6 paid wellness days, mental health support, bi-weekly team lunches, and your choice of a sports allowance or private health insurance.

• Extra Time Off: Paid time off for your birthday, plus 4 paid "Recharge Fridays" off per year.

• Career Growth: Dedicated professional development and continuous learning opportunities.

We’re looking for a Senior Design System Engineer to take ownership of the technical architecture of our multi-platform design system. You’ll work directly with design system designers and platform engineering teams to take the way we build user interfaces at Bolt to the next level.

With over 200 million customers in 53+ countries, Bolt is one of the fastest-growing tech companies in Europe and Africa. And it's all thanks to our people.

We believe in creating an inclusive environment where everyone is welcome, regardless of race, colour, religion, gender identity, sexual orientation, national origin, age, or disability.

Our ultimate goal is to make cities for people, not cars, and we need your help to achieve this mission!

In this role you work daily with Designer System Designers, representing engineering interests. You will drive core design system initiatives from the engineering side, ensuring our design foundations scale effectively across all platforms and products. You will help shape design system strategy, align teams and contribute code.

This role is part of our Web Architecture and Visual Experience (WAVE) team. WAVE is responsible for the web platform, design system implementation for web and providing engineering support for the design system core. 

You will get to own large projects that cover all platforms and can change how Bolt thinks about shipping user interfaces. Feeling passionate about accessibility? How about changing the way product teams across Bolt consider accessibility in their work and shipping practical improvements to hundreds of millions people? 

• Own the technical vision. Architect platform-agnostic infrastructure like design tokens, Figma plugins and shared utilities. Promote best practices and facilitate technical discussions.
• Align engineering platform teams around shared design system goals and priorities.
• Shape the vision, strategy and roadmap for the design system, representing engineering interests.
• Develop technical metrics for the Design System.
• Advocate for the design system to the engineering organisation.
• Drive continuous improvement, identify opportunities and lead them.

• You have worked in a design system team or as a contributor to a design system initiative.
• You have led engineers in complex cross-team projects. Ideally, in a multi-platform setting.
• You have practical experience working with multiple platforms (web + iOS/Android/React Native)
• You are a strong communicator, capable of representing diverse interests.
• You are a systems thinker, comfortable navigating in ambiguity.

Experience is great, but what we really look for is drive, intelligence, and integrity. So even if you don’t tick every box, please consider applying if you feel you’re the kind of person described above!

• Play a direct role in shaping the user experience of one of Europe’s leading platforms.
• Impact millions of customers and partners in 600+ cities across 53 countries
• Work in fast-moving autonomous teams with some of the smartest people in the world
• Accelerate your professional growth with unique career opportunities
• Get a rewarding salary and stock option package that lets you focus on doing your best work
• Enjoy the flexibility of working in a hybrid mode with a minimum of 2 days in the office each week to foster strong connections and teamwork
• Take care of your physical and mental health with our wellness perks

*Some perks may differ depending on your location and role.

Senior Operations Specialist

We are looking for a highly results-driven Senior Operations Specialist (Rides) to help scale Bolt’s rapidly growing business in Tallinn, Estonia.

With over 200 million customers in 50+ countries, Bolt is one of the fastest-growing tech companies in Europe and Africa. And it's all thanks to our people.

We believe in creating an inclusive environment where everyone is welcome, regardless of race, colour, religion, gender identity, sexual orientation, age, or disability.

Our ultimate goal is to make cities for people, not cars, and we need your help to achieve this mission!

As a Senior Operations Specialist, you will own the operational excellence of rider use cases such as Airports, Scheduled Rides, Business rides, and Categories. You will translate business needs into clear processes and playbooks, partner with Local Ops and cross-functional teams, and drive measurable improvements in reliability, adoption and unit economics.

The Senior Operations Specialist will raise use case adoption and GMV through operational levers, as well as improve reliability and quality through clear standards and playbooks. In addition, the successful candidate will be responsible for surface insights and creating opportunities for Product, Growth, and Pricing.

• Architect the Experience: Map out end-to-end rider journeys to bridge gaps and turn risks into seamless, world-class user experiences.
• Write the Global Playbook: Build and own the operational gold standard for high-stakes categories like Airports, Scheduled Rides, and High-Value tiers.
• Drive Data-Led Growth: Identify and size massive improvement opportunities through rigorous cost-benefit analysis and strategic prioritization.
• Orchestrate Cross-Functional Wins: Act as the central nervous system between Growth, Pricing, Product, and Support to execute high-impact changes.
• Master the Metrics: Own the leaderboard by monitoring core KPIs and delivering actionable performance insights across global markets.
• TPilot & Scale: Lead high-visibility operations in priority cities, turning experimental wins into repeatable, global success stories.

• You bring deep, specialised knowledge and a proven track record of solving complex problems and refining processes.
• You don’t wait for permission; you take full accountability for your workstreams and hunt down solutions before issues arise.
• You translate complex data into compelling narratives that resonate with everyone from engineers to executives.
• You’re a master of execution, breaking down ambitious program goals into actionable steps with a relentless focus on impact.
• You thrive on elevating those around you, offering the kind of constructive feedback and mentorship that builds elite teams.
• You align every task with the broader business strategy, ensuring your work consistently moves the needle on organisational goals.

Experience is great, but what we really look for is drive, intelligence, and integrity. So even if you don’t tick every box, please consider applying!

• Accelerate your professional growth with unique career opportunities.
• Enjoy a rewarding salary and stock options, knowing that as Bolt succeeds, so do you.
• Take care of your physical and mental health with our wellness perks.
• Celebrate 5 years at Bolt with a 1-month paid sabbatical to recharge.
• Connect with colleagues at annual company events and smaller team gatherings.
• Balance flexibility and in-person collaboration with our hybrid model, including at least 12 monthly in-office days.

*Some perks may differ depending on your location and role.