Senior Full-stack Developer, Python/FastAPI, React & SQL

We are launching a new multi-cloud product and need a Senior Full-stack Developer to own full-stack delivery from Python/FastAPI APIs to React/TypeScript UI. You will optimize PostgreSQL and OpenSearch performance and collaborate in a Databricks-heavy environment. Apply today.

Responsibilities

• Develop and enhance web applications using Python/FastAPI and SQL
• Define and implement APIs and integrations that support high-load database operations
• Optimize and troubleshoot query performance in production systems
• Deliver front-end work using TypeScript and React
• Incorporate GenAI engineering tools to improve development workflows
• Work collaboratively while independently owning assigned tasks
• Maintain proactive communication with stakeholders and teammates
• Own features end to end and contribute beyond ticket completion
• Execute effectively through ambiguity in a fast-paced startup environment
• Requirements
• Demonstrated 5+ years of production delivery with Python, FastAPI, and SQL
• Advanced knowledge of web application development, API design, and integration workHands-on ability to operate high-load databases and optimize query performance
• Familiarity with TypeScript and React and willingness to work across the full stack
• Practical experience with GenAI engineering tools, ideally Claude CodeStrong communication abilities and proactive ownership, comfortable working solo and with a teamTrack record of navigating ambiguity and shipping without constant direction in a transparent, fast-moving startup environment
• English proficiency at B2 (Upper-Intermediate) level or higherNice to have
• Experience with TypeScript, React, Next.js, Storybook, Playwright, Radix UI, and Zustand
• Experience working with PostgreSQL and Open
• Search
• Knowledge of cloud platforms, Infrastructure as Code, and related toolsData engineering experience using PySpark and Spark
• SQL
• Client-facing experienceWe offerWe 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 opportunitiesWe provide growth opportunities:

Career development programs

Thought leadership, mentoring, soft skills and well-being programs

Certification (Anthropic, Gemini, GCP, Azure, AWS)

English classesWe cover it all:

Stable payParticipation in the Employee Stock Purchase Plan with a 15% discount

Benefits package (health insurance, multisport, shopping vouchers)

Referral bonuses up to $2,000Offices 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 onlyWe are open for working with Contractors. Terms of B2B cooperation agreements are agreed individuallyWe 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.