Senior Backend Product Engineer

Location: Brno

Department: Product Engineering

Location Type: HYBRID

Employment Type: FULL_TIME

The opportunity

Why this matters for your career

AI is how we build

• Agent native architecture standards: clear API contracts, semantic naming, and well-defined module boundaries that keep AI effective as systems grow.
• A context infrastructure layer with repo versioned guidance that AI tools automatically load, improving the output of Cursor, Claude Code, and Codex simultaneously.
• AI agent workflows for on-call and incident resolution: triage alerts, pull logs, surface relevant history, and suggest remediation.
• Systematic optimization of AI code review to catch correctness, security, and maintainability issues earlier.

What you will do

• Develop the Core Product: You'll have a significant hand in building and refining our user-facing product. Your work will directly impact our users as you ship your contributions to production regularly, ensuring the product's performance, scalability, and robustness. You’ll enjoy the freedom to direct your work and share ownership of the product.
• Develop Across the Entire Tech Stack: Craft robust backend systems using technologies like Ruby and Kotlin, and create intuitive frontends with React and Typescript. Your work will bridge server and client sides, making our product more efficient and user-friendly.
• Tackle Complex Challenges: Bring your creativity to resolve challenging technical issues and be involved in every phase of feature development – from concept to implementation and beyond.
• Collaborate Cross-Functionally: Work alongside product managers, designers and other partners. Your collaborative efforts will be essential in delivering impactful results and engaging in the dynamic product development process.
• Gain Customer Insight: Dive into customer experiences to gain valuable insights, driving user engagement and shaping new features. Your work will make our product more engaging and personalized, resonating with our users' needs.
• Make our codebase AI-ready: define clear module boundaries, improve API contracts, add semantic context, and build the structured documentation that makes AI agents more effective across every repo.
• Design and implement agent workflows that go beyond chat: multi-step reasoning, tool use, autonomous task execution, and human-gated checkpoints.
• Run experiments, validate with real users, and iterate based on evidence. We measure learning velocity, not just output.
• Collaborate closely with product managers and designers to shape what we build, not just how we build it. We expect a product mindset, not just technical execution.
• Act as a knowledge multiplier, sharing what you learn across and beyond your team to raise the bar for everyone.

About you

• Proven Engineering Experience: You bring over 5 years of engineering experience, demonstrating a history of developing world-class product experiences within a team. Your track record shows significant contributions in engineering roles.
• Pragmatic & Business-Oriented: Your focus is on balancing craft, speed, and business impact. You make informed decisions, choosing the right technology based on practical tradeoffs rather than chasing trends.
• Strategic Problem-Solver: You excel at breaking down complex problems into manageable solutions, considering both technical and business implications. Your ability to iterate swiftly on new ideas and adjust your approach with emerging information stands out.
• Familiar with Scaling Systems: You possess a thorough understanding of how different system components, from the user interface to the data model, work together. Your technical skills include working as part of a team to scale and optimize backend systems, adapting effectively to meet increasing user demands.
• Flexible with Technology: Adaptable in learning and using different technologies, you are not bound by any single tool or language. You value practicality and efficiency in your technological choices.
• Empathetic Communicator: You articulate complex technical ideas clearly, both in writing and verbally. In disagreements, you engage thoughtfully, respecting different viewpoints and finding compromise when necessary.
• Team Player: Collaborative by nature, you work effectively with cross-functional teams. Your commitment goes beyond personal achievement, focusing also on the growth and learning of your teammates.
• Focused on Delivery: You prioritize effectively, aligning your work with the team's objectives. You are skilled in managing time and resources, you meet deadlines and work within budgets, while adeptly adjusting to project changes as needed.
• User-Centric: You prioritize users, understanding the impact of your work on their lives. This awareness drives your project choices, recognizing the responsibility that comes with your role.
• Curious and Quick Learner: You are eager to take on new challenges, unphased by managing multiple projects. Your ability to rapidly learn and adapt is essential in our fast-paced environment.
• Startup Mentality: Thriving in the dynamic setting of startup in a changing world, you are self-motivated and action-oriented. You balance short-term achievements with the long-term quality standards critical for our success.

Our tech stack

• Frontend: TypeScript, React.js
• Backend: TypeScript/Node.js, Ruby, Kotlin, Kafka
• Storage: Postgres, Elastic, Redis
• Data Pipeline: Python, Keboola, Looker, Snowflake
• Infrastructure: AWS, Kubernetes, Terraform
• Business tools: Slack, Jira, Google suite, Zoom, Notion
• Full Tech Stack

Our Benefits Include