Senior Fullstack Developer

Deepsense; Polska; Hybrid; PLN 180,000 - 280,000; Part time

Benefits offered by this job

Private medical care

Multisport card

English lessons

Training budget

Team lunches

Snacks

Job summary

deepsense.ai is hiring a Senior Fullstack Engineer for remote/hybrid collaboration across projects in Poland. You will craft production-ready apps with Python backends and React/TypeScript frontends, integrate AI models and LLM-driven features, and own end-to-end delivery, testing, and observability.

You will work with a team of AI experts, contribute to evolving architectures, and mentor peers while engaging with client projects and ongoing modern tech stacks in a flexible, remote-first

Qualifications

• Strong software engineering fundamentals.
• Proven experience building maintainable backend services and APIs in Python.
• Proficiency in frontend development with React and TypeScript.
• Solid SQL skills and experience with relational databases.
• Experience with Docker, Docker Compose, Kubernetes, CI/CD, and observability tools.
• Clear communication in English and Polish.

Responsibilities

• End-to-End application delivery: build, operate, and maintain production-ready apps across frontend, backend, APIs, databases, and cloud environments.
• AI/LLM integration: connect models, retrieval (RAG), streaming, and data stores to live products.
• Own testing, CI/CD, containerization, deployment, and observability for reliability.
• Provide technical leadership and act as a key contact in client projects, documenting tradeoffs and guiding integration decisions.

Skills

Python

React

TypeScript

SQL

Docker

Kubernetes

CI/CD

APIs

Tools

Docker Compose

Git

OpenTelemetry

Grafana/Prometheus

Job description

Remote / Hybrid — offices and coworks in major Polish cities

Employment type:

B2B

Operating mode:

Remote / Hybrid — offices and coworks in major Polish cities

Location:

Poland

Atdeepsense.ai, wewon’t just build AI solutions – we’ll shape how companies around the world use them.

• We’re anOpenAI Advanced Partner and anAnthropic Service Partner, with adirect line toboth labs’ solution engineers. Wealso build production work onElevenLabs, soyou’re getting early, hands‑on access tonew 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 insoftware & tech, pharma & healthcare, manufacturing, retail, telecoms & media.


• Contribute toopen-source projects – just take alook atour latest solution, ragbits, anagentic RAG framework with over 1.6k stars onGitHub.

And the best part ofworking atdeepsense.ai?

• Spread your wings with clear career paths, technical orleadership.


• Collaborate with 100+ AI experts with 15+ years ofapplied AI experience, aswell asPhD-level researchers with academic backgrounds.


• Tap into domain expertise and knowledge sharing whenever you need it.

Your Role asSenior Fullstack

What makes this role stand out:

• 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 tolife inreal products, integrating model APIs, retrieval mechanisms (RAG), streaming, structured outputs, tool use, and vector orspecialized data stores.


• Full Delivery Lifecycle Ownership: You work alongside product teams, data scientists, and AI engineers from the design stage toturn requirements into maintainable software. You own testing, CI/CD, Docker/Kubernetes containerization, deployment, and observability (logs, metrics, traces) toensure system reliability.


• Technical Leadership & Client Impact: You act asatechnical point ofcontact inclient projects—discussing requirements, explaining technical tradeoffs, maintaining clear documentation, and adapting flexibly todifferent codebases and technology stacks.

Why it’s worth it:

• You work atthe intersection ofmodern software engineering and generative AI, taking models outofisolation and turning them into reliable, user-facing applications.


• You get hands‑on exposure tovaried client environments, consulting setups, and evolving toolchains, with direct influence over architecture, technology choices, and engineering tradeoffs.


• You have space togrow your impact—whether advancing deeper into AI architecture and agentic system design, ortaking onbroader system engineering and client leadership roles.

Afew project examples:

• Building AI voicebots that double conversion rates.


• Creating aGenAI solution for aleading USlegal company together with the OpenAI team.


• Running GenAI onedge devices with cloud-level performance.

All ofthis inasetup that feels like anAI-driven software house: remote-first, flexible, and packed with specialists who are open tosharing knowledge and experimenting with the newest tech.

The ideal candidate:

• Has strong software engineering fundamentals and proven experience building maintainable backend services and APIs, primarily inPython.


• Isproficient inmodern frontend development, working comfortably with React and TypeScript.


• Holds solid SQL skills and hands‑on experience with relational databases, alongside familiarity with vector orspecialized data stores.


• Regularly uses Docker, Docker Compose, and Git, with asolid grasp ofKubernetes, 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 apragmatic engineering mindset—taking ownershipofreliability, security, and performance across the full stack.


• Communicates clearly inEnglish and Polish, with the flexibility toadapt 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 asCode (Terraform), oradvanced observability stacks (OpenTelemetry, Grafana, Prometheus).

WeOffer

Impactful AI projects

• Tackle industry-grade challenges: from LLMs for drug discovery toGenAI onedge devices, AI voicebots, and open-source initiatives with global reach.


• Collaborate directly with our partners for early access totools before public release, testing inproduction, and bringing know-how from AI leaders into our projects.


• Contribute toopen-source initiatives like ragbits (1.6k+ stars onGitHub), adopted and appreciated bythe ML community.

Growth & Knowledge Sharing

• Join AI specialists who share expertise through Tech Talks, workshops, and internal trainings.


• Present your work atconferences, run experiments, and stay ahead ofthe curve.


• Choose your own career path and get support for your development.

Flexibility & Culture

• Work fully remote, from one ofour two offices (Warsaw, Bydgoszcz), orfrom coworking spaces inPoznań, Łódź, Wrocław, and Gdańsk.


• Enjoy flexible working hours.


• Benefit from aculture that prevents burnout and supports balance indaily work.


• Start with onboarding – from day one you are matched with abuddy.


• Access apremium AI development suite: OpenAI ChatGPT, Claude, Gemini Advanced, GitHub Copilot, Cursor AI IDE, Claude Code, NotebookLM, plus the latest emerging AI tools tosupport your daily work.


• Work inagile teams with fast decision-making and space totry out your ideas.

Basic Benefits

• Get private medical care and aMultisport card.


• Use our company library, attend onsite English lessons, and benefit from adedicated training budget.


• Join free team lunches and enjoy fresh fruit & snacks.


• Take part inteam-building activities and holiday celebrations.