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Senior Full Stack Developer
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Offer summary

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

The project focuses on building a new product with strong AI and data processing emphasis. The primary stack is Python, FastAPI for backend, React/TypeScript for frontend and PostgreSQL and OpenSearch for data management; multi-cloud environment with heavy use of Databricks. Responsibilities include building and maintaining web applications, designing APIs and integrations for high-load databases, query performance optimization, supporting TypeScript/React frontend, using GenAI tools (preferred Claude Code), owning product features and delivering in a fast startup pace.

newyou can start ASAP

Senior Full Stack Developer

Company: EPAM Systems (Poland) sp. z o.o.

from: 22 September 2026
to: 22 October 2026
salary not specifiedB2B contract (full-time)
salary not specifiedcontract of employment
Offer parameters
level:senior
working mode:remote
Kraków, Grzegórzki
Kraków, GrzegórzkiFabryczna 1AView on map

Requirements

Expected technologies

Python
FastAPI
SQL
TypeScript
React
Claude Code

Optional technologies

TypeScript
React
Next.js
Storybook
Playwright
Radix UI
Zustand
PostgreSQL
OpenSearch
PySpark
Spark SQL

Our requirements

  • 5+ years of hands-on production experience with Python, FastAPI, and SQL
  • Strong expertise in web application development, API design, and integrations
  • Skilled in managing high-load databases and optimizing query performance
  • Some front-end experience with TypeScript and React, along with openness to full-stack work
  • Practical experience using GenAI engineering tools, Claude Code preferred
  • Excellent communication skills and a proactive mindset, comfortable working solo or as part of a team
  • Ability to navigate ambiguity and make progress independently in a transparent, fast-moving startup setting
  • English fluency at B2 level or above

Optional

  • Strong background in TypeScript, React, Next.js, Storybook, Playwright, Radix UI, and Zustand
  • Hands-on experience with PostgreSQL and OpenSearch
  • Knowledge of cloud platforms, Infrastructure as Code, and related tooling
  • Experience in data engineering, particularly working with PySpark and Spark SQL
  • Prior experience working directly with clients

Your responsibilities

  • Build and maintain web applications with Python/FastAPI and SQL
  • Design APIs and integrations that handle high-load database operations
  • Improve query performance across production systems
  • Support front-end development efforts using TypeScript and React
  • Use GenAI engineering tools to enhance development workflows
  • Work both collaboratively with the team and independently on assigned tasks
  • Maintain proactive communication with team members and stakeholders
  • Own product features and contribute meaningfully beyond simply completing tickets
  • Handle ambiguity and deliver results within a fast-paced startup setting

About the project

We're seeking a Senior Full-stack Developer to help build a new product using Python and FastAPI for the backend, React/TypeScript for the frontend, and PostgreSQL and OpenSearch for database management. The product runs in a multi-cloud environment and relies heavily on Databricks.

This is how we work on a project

  • Continuous Deployment
  • Continuous Integration

What we offer

We gather like-minded people:
  • Top tech minds driving innovation in AI, cloud and digital platform modernization
  • Supportive team and agile, startup-like culture
  • Hybrid by design mode and opportunity to work remotely within Poland
  • Chance to work abroad for up to 60 days annually
  • Business-driven relocation opportunities
    • We provide growth opportunities:
  • Career development programs
  • Thought leadership, mentoring, soft skills and well-being programs
  • Certification (Anthropic, Gemini, GCP, Azure, AWS)
  • English classes
    • We cover it all:
  • Stable pay
  • Participation in the Employee Stock Purchase Plan with a 15% discount
  • Benefits package (health insurance, multisport, shopping vouchers)
  • Referral bonuses up to $2,000
  • Offices featuring entertainment and relaxation zones, table tennis and football, free snacks, coffee and more
  • Corporate, social and well-being events
    • Please, note:
  • Benefits listed above are available to employees only
  • We are open for working with Contractors. Terms of B2B cooperation agreements are agreed individually
  • We will reach out to selected candidates exclusively

    • Development opportunities we offer

    • conferences in Poland
    • development budget
    • external training
    • industry-specific e-learning platforms
    • intracompany training
    • mentoring
    • soft skills training
    • space for experimenting
    • substantive support from technological leaders
    • support of IT events
    • technical knowledge exchange within the company

    Benefits

    • private medical care
    • life insurance
    • flexible working time
    • fruits
    • integration events
    • retirement pension plan
    • no dress code
    • video games at work
    • coffee / tea
    • parking space for employees
    • leisure zone
    • employee referral program
    • charity initiatives

    Recruitment stages

    • 1.
      Recruiter Interview (30 min)
    • 2.
      Technical Interview (90 min)
    • 3.
      Manager Interview (60 min)
    • 4.
      Meeting with the Project Team or Client (60 min, optional)
    • 5.
      Welcome Aboard!

    EPAM Systems (Poland) sp. z o.o.

    EPAM is a leading global provider of digital platform engineering and development services. We are committed to having a positive impact on our customers, our employees, and our communities. We embrace a dynamic and inclusive culture. Here you will collaborate with multi-national teams, contribute to a myriad of innovative projects that deliver the most creative and cutting-edge solutions, and have an opportunity to continuously learn and grow. No matter where you are located, you will join a dedicated, creative, and diverse community that will help you discover your fullest potential.
    Senior Full Stack Developer
    I apply to:
    EPAM Systems (Poland) sp. z o.o.
    Kraków, Grzegórzki
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