Senior Full-stack Developer (Databricks, Python/FastAPI)

EPAM Systems; Poland; Hybrid; PLN 180,000 - 300,000; Full time

Benefits offered by this job

Hybrid by design

Remote work within Poland

Work abroad up to 60 days annually

Relocation opportunities

English classes

Health insurance

Multisport

Shopping vouchers

Job summary

EPAM Systems in Poland seeks a Senior Full-stack Developer to build reliable Python/FastAPI APIs and React/TypeScript experiences. You will work with PostgreSQL, OpenSearch, and Databricks, focusing on integrations and performance.

Responsibilities include delivering web applications, API design, and optimizing performance while contributing UI work and GenAI-enabled workflows. Hybrid work options and relocation opportunities are available.

Qualifications

• 5+ years of production experience with Python, FastAPI and SQL.
• Proficient in API design and system integrations.
• Experience with high-load databases and query optimization.
• Front-end capability with TypeScript and React in a full-stack role.
• Experience using GenAI tools, ideally Claude Code.

Responsibilities

• Deliver and maintain web applications with Python/FastAPI and SQL.
• Plan and design APIs and integrations for high-load databases.
• Optimize query performance across live systems.
• Contribute UI functionality using TypeScript and React.
• Use GenAI tools to improve workflows and throughput.
• Collaborate and work autonomously on tasks and communicate with stakeholders.
• Own product features and deliver beyond tickets.
• Handle ambiguity in a fast-moving startup environment.

Skills

Python

FastAPI

SQL

TypeScript

React

GenAI tools

English B2

API design

Independence

Tools

PostgreSQL

OpenSearch

Databricks

Claude Code

Job description

We are developing a new multi-cloud platform and want a Senior Full-stack Developer to build reliable Python/FastAPI APIs and React/TypeScript experiences. You will work with PostgreSQL, OpenSearch, and Databricks, focusing on integrations and performance.

Responsibilities

• Deliver and maintain web applications built with Python/FastAPI and SQL
• Plan and design APIs and integrations that support high-load database operations
• Optimize query performance across live production systems
• Contribute UI functionality using TypeScript and React
• Use GenAI engineering tools to improve development workflows and throughput
• Collaborate closely with the team while executing autonomously on assigned tasks
• Communicate proactively with team members and stakeholders
• Take full ownership of product features and contribute beyond ticket completion
• Handle ambiguity and consistently deliver in a fast-paced startup environment

Requirements

• 5+ years of real-world production experience with Python, FastAPI, and SQL
• Solid background in web application delivery, API design, and system integrations
• Proficiency with high-load databases and query performance optimization techniques
• Ability to contribute on the front end using TypeScript and React while staying effective full-stack
• Experience using GenAI engineering tools, ideally Claude Code
• Strong interpersonal communication and proactive collaboration skills, with ability to work independently
• Capability to succeed amid ambiguity and deliver without constant direction in a transparent, fast-moving startup environment
• English proficiency at B2 (Upper-Intermediate) level or higher

Nice to have

• Hands-on skills with TypeScript, React, Next.js, Storybook, Playwright, Radix UI, and Zustand
• Experience with PostgreSQL and OpenSearch in production contexts
• Familiarity with cloud platforms, Infrastructure as Code, and adjacent tooling
• Data engineering exposure, including PySpark and SparkSQL
• Client-facing experience

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

EPAM is global leader in AI transformation engineering and integrated consulting, serving Forbes Global 2000 companies and ambitious startups. With over thirty years of expertise in custom software, product and platform engineering, we empower our clients to become AI-Native enterprises, driving measurable value from innovation and digital investments.