Senior Full-stack Developer

EPAM Systems, Inc.; Poland; Hybrid; PLN 180,000 - 240,000; Full time

Benefits offered by this job

Health insurance

Multisport

Shopping vouchers

Employee stock purchase program

Job summary

EPAM Systems, Inc. is seeking a Senior Full-stack Developer to build a new product using Python and FastAPI for the backend, React/TypeScript for the frontend, and PostgreSQL/OpenSearch for data management. The product runs in a multi-cloud environment and leverages Databricks.

You will design APIs, optimize high-load databases, and support frontend development while using GenAI tools to enhance workflows. The role requires strong communication and ability to work both collaboratively and

Qualifications

• 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, plus 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 in a team.
• Ability to navigate ambiguity and progress independently in a fast-moving startup setting.

Responsibilities

• Build and maintain web applications using Python/FastAPI and SQL.
• Design APIs and integrations for high-load database operations.
• Improve query performance across production systems.
• Support front-end efforts with TypeScript and React.
• Use GenAI tools to enhance development workflows.
• Collaborate with team and stakeholders, own product features, and deliver results.

Skills

Python

FastAPI

SQL

API design

Web app development

OpenSearch

PostgreSQL

TypeScript

React

GenAI tools

Communication

English proficiency

Tools

Next.js

Playwright

Storybook

Zustand

Job description

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.ResponsibilitiesBuild and maintain web applications with Python/FastAPI and SQLDesign APIs and integrations that handle high-load database operationsImprove query performance across production systemsSupport front-end development efforts using TypeScript and ReactUse GenAI engineering tools to enhance development workflowsWork both collaboratively with the team and independently on assigned tasksMaintain proactive communication with team members and stakeholdersOwn product features and contribute meaningfully beyond simply completing ticketsHandle ambiguity and deliver results within a fast-paced startup settingRequirements5+ years of hands-on production experience with Python, FastAPI, and SQLStrong expertise in web application development, API design, and integrationsSkilled in managing high-load databases and optimizing query performanceSome front-end experience with TypeScript and React, along with openness to full-stack workPractical experience using GenAI engineering tools, Claude Code preferredExcellent communication skills and a proactive mindset, comfortable working solo or as part of a teamAbility to navigate ambiguity and make progress independently in a transparent, fast-moving startup settingEnglish fluency at B2 level or aboveNice to haveStrong background in TypeScript, React, Next.js, Storybook, Playwright, Radix UI, and ZustandHands-on experience with PostgreSQL and OpenSearchKnowledge of cloud platforms, Infrastructure as Code, and related toolingExperience in data engineering, particularly working with PySpark and Spark SQLPrior experience working directly with clientsWe 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.