Senior Fullstack Developer

The ideal candidate:

• Has strong software engineering fundamentals and proven experience building maintainable backend services and APIs, primarily in Python.
• Is proficient in modern frontend development, working comfortably with React and TypeScript.
• Holds solid SQL skills and hands-on experience with relational databases, alongside familiarity with vector or specialized data stores.
• Regularly uses Docker, Docker Compose, and Git, with a solid grasp of Kubernetes, CI/CD pipelines, and application observability (logs, metrics, traces).
• Demonstrates practical experience integrating external APIs and services, including AI and LLM-based components (streaming, structured outputs, RAG).
• Brings a pragmatic engineering mindset—taking ownership of reliability, security, and performance across the full stack.
• Communicates clearly in English and Polish, with the flexibility to adapt across different client projects, codebases, and toolchains.
• Bonus points for experience with frameworks like FastAPI/Django/Flask, alternative ecosystems (Angular, Node.js), cloud platforms (AWS, GCP, Azure), agentic frameworks/tool calling, Infrastructure as Code (Terraform), or advanced observability stacks (OpenTelemetry, Grafana, Prometheus).

By joining us, you’ll:

• We’re an OpenAI Advanced Partner and an Anthropic Service Partner, with a direct line to both labs’ solution engineers. We also build production work on ElevenLabs, so you’re getting early, hands-on access to new models and features before they hit the mainstream.
• Explore and apply the newest tech: LLMs & RAG, MLOps, Edge Solutions, Computer Vision, Predictive Analytics.
• Tackle challenges in software & tech, pharma & healthcare, manufacturing, retail, telecoms & media.
• Contribute to open-source projects – just take a look at our latest solution, ragbits, an agentic RAG framework with over 1.6k stars on GitHub.

And the best part of working at deepsense.ai?

• Spread your wings with clear career paths, technical or leadership.
• Collaborate with 100+ AI experts with 15+ years of applied AI experience, as well as PhD-level researchers with academic backgrounds.
• Tap into domain expertise and knowledge sharing whenever you need it.

We Offer

Impactful AI projects

• Tackle industry-grade challenges: from LLMs for drug discovery to GenAI on edge devices, AI voicebots, and open-source initiatives with global reach.
• Collaborate directly with our partners for early access to tools before public release, testing in production, and bringing know-how from AI leaders into our projects.
• Contribute to open-source initiatives like ragbits (1.6k+ stars on GitHub), adopted and appreciated by the ML community.

Growth & Knowledge Sharing

• Join AI specialists who share expertise through Tech Talks, workshops, and internal trainings.
• Present your work at conferences, run experiments, and stay ahead of the curve.
• Choose your own career path and get support for your development.

Flexibility & Culture

• Work fully remote, from one of our two offices (Warsaw, Bydgoszcz), or from coworking spaces in Poznań, Łódź, Wrocław, and Gdańsk.
• Enjoy flexible working hours.
• Benefit from a culture that prevents burnout and supports balance in daily work.
• Start with onboarding – from day one you are matched with a buddy.
• Get high-end equipment (laptops, dual monitors, pro peripherals).
• Access a premium AI development suite: OpenAI ChatGPT, Claude, Gemini Advanced, GitHub Copilot, Cursor AI IDE, Claude Code, NotebookLM, plus the latest emerging AI tools to support your daily work.
• Work in agile teams with fast decision-making and space to try out your ideas.

Basic Benefits

• Get private medical care and a Multisport card.
• Use our company library, attend onsite English lessons, and benefit from a dedicated training budget.
• Join free team lunches and enjoy fresh fruit & snacks.
• Take part in team-building activities and holiday celebrations.

,[End-to-End Application Delivery: You build, operate, and maintain complete, production-ready applications across frontend, backend, APIs, databases, and cloud environments—primarily using Python for backend services and React/TypeScript for modern frontends., AI & LLM Integration: You bring AI capabilities to life in real products, integrating model APIs, retrieval mechanisms (RAG), streaming, structured outputs, tool use, and vector or specialized data stores., Full Delivery Lifecycle Ownership: You work alongside product teams, data scientists, and AI engineers from the design stage to turn requirements into maintainable software. You own testing, CI/CD, Docker/Kubernetes containerization, deployment, and observability (logs, metrics, traces) to ensure system reliability., Technical Leadership & Client Impact: You act as a technical point of contact in client projects—discussing requirements, explaining technical tradeoffs, maintaining clear documentation, and adapting flexibly to different codebases and technology stacks.] Requirements: Python, React, TypeScript, AI, LLM, FastAPI, Django, Flask Additionally: Sport subscription, Training budget, Private healthcare, Small teams, International projects, English lessons, Integration events, Free coffee, Bike parking, Playroom, Shower, Free snacks, Free beverages, Free lunch, Modern office, In-house trainings, In-house hack days, No dress code.