Senior Full-stack Developer - Python/FastAPI & React/TypeScript

EPAM Systems, Inc.; Poland; Hybrid; PLN 180,000 - 320,000; Full time

Benefits offered by this job

Health insurance

Multisport

Relocation opportunities

Remote work within Poland

Employee stock purchase plan

Job summary

EPAM Systems, Inc. is seeking a Senior Full-stack Developer to drive backend and frontend delivery in a multi-cloud setup.

You will build with Python/FastAPI, React/TypeScript, PostgreSQL, OpenSearch, and Databricks while optimizing performance. Responsibilities include creating and maintaining web apps, architecting APIs for high-load workloads, improving query performance, and delivering UI work end-to-end.

Qualifications

• 5+ years delivering production systems with Python and FastAPI.
• Deep understanding of web app development, API architecture, and integration patterns.
• Experience managing high-load databases and improving query performance.
• Comfort with TypeScript/React and end-to-end full-stack.
• Hands-on use of GenAI tools; proactive and ownership oriented.
• English proficiency at B2 level or higher.

Responsibilities

• Create and maintain web applications with Python/FastAPI and SQL.
• Architect APIs and integrations to support high-load database workloads.
• Improve query performance throughout production systems.
• Deliver UI work using TypeScript and React.
• Apply GenAI engineering tools to streamline and improve developer workflows.
• Partner with teammates while owning and completing independent assignments.
• Share progress proactively with stakeholders and the wider team.
• Drive feature ownership and add value beyond ticket-by-ticket execution.

Skills

Python

FastAPI

SQL

PostgreSQL

OpenSearch

TypeScript

React

GenAI tooling

Cloud platforms

PySpark / SparkSQL

Education

Bachelor's degree in Computer Science or related field

Tools

Next.js

Storybook

Playwright

Radix UI

Zustand

Claude

Job description

We are creating a new product in a multi-cloud setup and are seeking a Senior Full-stack Developer to drive backend and frontend delivery. You will build with Python/FastAPI, React/TypeScript, PostgreSQL, OpenSearch, and heavy Databricks usage while optimizing performance. Apply today.ResponsibilitiesCreate and maintain web applications with Python/FastAPI and SQLArchitect APIs and integrations to support high-load database workloadsImprove query performance throughout production systemsDeliver UI work using TypeScript and ReactApply GenAI engineering tools to streamline and improve developer workflowsPartner with teammates while owning and completing independent assignmentsShare progress proactively with stakeholders and the wider teamDrive feature ownership and add value beyond ticket-by-ticket executionDeliver outcomes despite ambiguity in a fast-paced startup environmentRequirementsExtensive experience of 5+ years delivering production systems with Python, FastAPI, and SQLDeep understanding of web app development, API architecture, and integration patternsDemonstrated ability to manage high-load databases and improve query performanceComfort with TypeScript and React plus willingness to work end-to-end full-stackHands-on use of GenAI engineering tools, ideally Claude CodeClear communication skills with a proactive, ownership-oriented approachAbility to handle uncertainty and execute without constant direction in a transparent, fast-moving startup environmentEnglish proficiency at B2 (Upper-Intermediate) level or higherNice to haveExperience across TypeScript, React, Next.js, Storybook, Playwright, Radix UI, and ZustandWorking knowledge of PostgreSQL and OpenSearchExposure to cloud platforms, Infrastructure as Code, and supporting toolsExperience handling data via PySpark and SparkSQLClient-facing experienceWe offerWe gather like-minded people:Top tech minds driving innovation in AI, cloud and digital platform modernizationSupportive team and agile, startup-like cultureHybrid by design mode and opportunity to work remotely within PolandChance to work abroad for up to 60 days annuallyBusiness-driven relocation opportunitiesWe provide growth opportunities:Career development programsThought leadership, mentoring, soft skills and well-being programsCertification (Anthropic, Gemini, GCP, Azure, AWS)English classesWe cover it all:Stable payParticipation in the Employee Stock Purchase Plan with a 15% discountBenefits 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 moreCorporate, social and well-being eventsPlease, 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 exclusivelyEPAM 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.