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Senior AI Native Developer
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Offer summary

(Summary generated by AI based on the full job description)

The project focuses on building AI products for enterprise clients, including RAG pipelines and AI agents, with emphasis on production-ready delivery and compliance. Required stack includes Go, Node.js, JavaScript, and tools/concepts like LangChain, LLMs, embeddings and vector search (RAG), REST/GraphQL, cloud (AWS/GCP/Azure), Docker and Kubernetes. Responsibilities cover designing and shipping end-to-end AI-powered products, coding agents and prompt/eval pipelines, integrating APIs and databases, model deployments and MLOps, and mentoring and shaping team standards. Salary: 24 000 – 27 000 PLN net/month. Benefits: remote work, flexible hours, growth initiatives, MacBook.

quick applyyou can start ASAP

Senior AI Native Developer

Company: STARTUP DEVELOPMENT HOUSE sp. z o.o.

from: 22 October 2026
to: 21 November 2026
24 000 - 27 000 złnet (+ VAT)/ mth.B2B contract (full-time)
Salary details
basic salary
Offer parameters
level:senior
working mode:remote
Warszawa, Śródmieście
Warszawa, ŚródmieścieAleje Jerozolimskie 81View on map

Requirements

Expected technologies

Go
Node.js

Optional technologies

JavaScript
TypeScript
LangChain
Claude Code
Cursor
Copilot
AWS
Google Cloud Platform
Microsoft Azure
Python
Langfuse

Our requirements

Experience:
  • 5+ years of professional software engineering experience, with strong expertise in Go, Node.js or JavaScript
  • Hands-on experience shipping LLM-based features to production
    • Tech skills:
  • Experience with LangChain or other LLM orchestration frameworks
  • Solid understanding of LLM architectures, embeddings and vector search (RAG)
  • Daily use of AI coding tools (e.g. Claude Code, Cursor, Copilot) and opinions on how to use them well
  • Experience integrating external APIs, databases and third-party tools into AI pipelines
  • Proficiency in building and consuming RESTful and GraphQL APIs
  • Experience with cloud platforms (AWS, GCP or Azure), Docker and Kubernetes
  • Familiarity with MLOps practices: model deployment, monitoring and evaluation, CI/CD for AI systems
  • Strong background in data structures, algorithms and software design principles
    • Soft skills:
  • At least B2 in English – we work internationally, so that's a must
  • Strong collaboration, communication and organisation skills – we're a team and we want you to be a part of it!
  • Readiness to work in an agile environment
  • Ability and will to share your knowledge with more junior members of the team
  • Proactive attitude towards implementing changes
  • Attention to detail
    • Optional
  • Experience with Python
  • Practical experience developing AI agents (incl. MCP servers or tool calling)
  • Observability for LLM apps (e.g. Langfuse)
  • Practical DDD experience and knowledge of Event Sourcing
  • Passion for new technologies and startups
  • Pet projects, presence in the IT community
  • Any other programming languages and frameworks

    • Your responsibilities

    • Design and ship AI-powered products end to end in Go and Node.js – RAG pipelines, AI agents, and the APIs and integrations around them – built to enterprise security and compliance standards (including the EU AI Act).
    • Work AI-first every day: coding agents, automated reviews and tests, prompt and eval pipelines – with real room to experiment with new models and tools.
    • Join projects for clients of different backgrounds, both business- and consumer-targeted. Wondering what you'd work on? Check out a powerful cyber risk mitigation platform, a Norwegian eco-friendly start-up or something just as exciting!
    • Gain wide experience across many industries and ways of working, both for exciting startups and established enterprises like Siemens.
    • Own your work and decide on the project's direction.
    • Grow fast through our internal knowledge-sharing initiatives – and share your own expertise with more junior team members, helping shape our standards for AI-assisted development.

    About the project

    Build what comes next — with AI as your everyday teammate!
    At Startup House we deliver end-to-end AI software for enterprises like Siemens, PwC and Toyota. We're looking for a Senior Developer who doesn't just use AI tools, but builds with them by default: agents in the workflow, LLM features in the product, and a sharp eye for what's production-ready.

    This is how we organize our work

    This is how we work

    in houseyou have influence on the choice of tools and technologiesyou have influence on the technological solutions appliedyou have influence on the productagile

    This is how we work on a project

    • code review
    • design patterns
    • DDD
    • event modeling
    • DevOps
    • documentation
    • issue tracking tools
    • functional tests
    • integration tests
    • regression tests
    • testing environments
    • unit tests
    • manual tests

    Ready to join?

    If you want to build AI products that actually make it to production, we'd love to hear from you. Let's build something great together! 🚀
    Company

    What we offer

    • Salary: 24 000 – 27 000 PLN net/month on B2B
    • Flexible working hours
    • Possibility to work 100% remotely or from our office in Warsaw
    • Growth-driven culture: knowledge-sharing initiatives, individual career paths and regular evaluation of your development
    • Startup approach: international teams, many greenfield projects and hands-on experience at every stage of the product development cycle
    • Freedom to choose the best tools and tech to achieve your team's goals
    • Trustworthy devices – we work on MacBooks

    Development opportunities we offer

    • mentoring
    • space for experimenting
    • technical knowledge exchange within the company
    • time for development of your ideas

    Benefits

    • remote work opportunities
    • flexible working time

    Recruitment stages

    • 1.
      Intro call with our recruiter
    • 2.
      Practical task
    • 3.
      Technical interview
    • 4.
      Final interview with Project Partner
    • 5.
      Offer!

    STARTUP DEVELOPMENT HOUSE sp. z o.o.

    At Startup House we deliver end-to-end AI software for enterprises like Siemens, PwC and Toyota.
    Senior AI Native Developer
    24k–27k zł / mth. (B2B)
    I apply to:
    STARTUP DEVELOPMENT HOUSE sp. z o.o.
    Warszawa, Śródmieście

    Need more information?

    • Make sure the body of the offer doesn’t already include what you’re looking for.
    • Ask a question if you need more information you’re interested in.
    • We’ll forward your question to the employer and aim to provide a response within 3 business days.

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