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Senior / Staff Full Stack Engineer
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Offer summary

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

The project focuses on an AI-driven platform involving document processing, retrieval systems, and structured AI/ML outputs. Key technologies include Python, FastAPI, React, TypeScript. Responsibilities cover building frontends, backend APIs, data and AI integration, and testing edge cases. The offer includes 100% remote work, private healthcare, and multisport benefits.

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Senior / Staff Full Stack Engineer

Company: ITEAMLY SPÓŁKA Z OGRANICZONĄ ODPOWIEDZIALNOŚCIĄ

from: 25 May 2026
to: 24 June 2026
27 000 - 30 000 złnet (+ VAT)/ mth.B2B contract (full-time)
Offer parameters
level:senior
working mode:remote
location:Kraków, Lesser Poland
Kraków, Lesser Poland

Requirements

Expected technologies

Python
FastAPI
TypeScript
Google Cloud Platform
React Native

Optional technologies

Firebase
Firestore
Cloud SQL
PostgreSQL
OpenAI
LLM APIs

Our requirements

  • 5+ years of professional full stack engineering experience.
  • Strong experience with Python and backend API development.
  • Strong experience with React and TypeScript in production applications.
  • Experience with modern API frameworks, ideally FastAPI or similar.
  • Understanding of AI / ML product workflows or strong interest in building software around AI outputs.
  • Experience designing and consuming API contracts, schemas, and structured JSON payloads.
  • Comfort with asynchronous workflows, background jobs, retries, partial failures, and user visible process status.
  • Good testing habits, especially around edge cases, failure cases, and API behavior.

Optional

  • Experience with AI / ML product workflows, including retrieval systems, embeddings, vector search, LLM based applications, or LLM APIs such as OpenAI, Gemini, Anthropic/Claude.
  • Experience with data heavy products, including data workflows, document processing, data normalization, or working with structured evidence.
  • Experience with cloud and data infrastructure, ideally Firebase, Firestore, Google Cloud Platform, Cloud Run, Cloud SQL, vector search, or Neo4j.

Your responsibilities

  • Building frontend experiences in React and TypeScript for evidence review, workflow status, recommendations, and decision outputs.
  • Developing backend APIs in Python, ideally with FastAPI, for document upload, asynchronous processing, job status, retries, partial success, and structured results.
  • Connecting frontend, backend, data workflows, retrieval systems, and AI generated outputs into a reliable product experience.
  • Building product features that make AI outputs easier to inspect through source references, confidence signals, warnings, and clear error states.
  • Working with structured data, documents, tables, financial metrics, and normalized evidence flows.
  • Writing tests around API contracts, edge cases, error cases, and realistic user workflows.

About the project

We are looking for a Senior / Staff Full Stack Engineer with strong Python and React experience to build and scale an AI driven product platform in a fully remote setup. The role focuses on frontend experiences, backend APIs, document processing, retrieval systems, and structured AI / ML outputs.

This is how we organize our work

This is how we work

agile

This is how we work on a project

  • Continuous Deployment
  • Continuous Integration
  • DevOps
  • documentation
  • issue tracking tools
  • testing environments
Company

What we offer

  • 100% remote work
  • Opportunity to work on modern ML/AI infrastructure
  • Private healthcare and Multisport
  • Real influence on technical decisions and architecture
  • Exposure to cutting-edge technologies
  • Collaborative and supportive team environment

Benefits

  • sharing the costs of sports activities
  • life insurance
  • remote work opportunities
  • flexible working time

ITEAMLY SPÓŁKA Z OGRANICZONĄ ODPOWIEDZIALNOŚCIĄ

As Venture Building, we create profitable technology companies from scratch. We collaborate with partners who share similar aspirations and are open to leveraging the potential of their networks, cultivated over years. We regularly launch new projects founded on long-term, amicable relationships with our associates.
Senior / Staff Full Stack Engineer
27k–30k zł / mth. (B2B)
I apply to:
ITEAMLY SPÓŁKA Z OGRANICZONĄ ODPOWIEDZIALNOŚCIĄ
Kraków, Lesser Poland

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  • Ask a question if you need more information you’re interested in.
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