Senior Full Stack Developer (Angular & Node.js)

EPAM Systems, Inc.; Kraków; On-site; PLN 180,000 - 240,000; Full time

Job summary

EPAM Systems, Inc. is seeking a Senior Full Stack Developer (Angular & Node.js) to build maintainable full-stack solutions for an enterprise AI-driven platform. You will deliver Angular components, NestJS RESTful microservices, and PostgreSQL-backed features, including streaming integrations.

You will collaborate in Agile teams, invest in tests, CI/CD, and security, and contribute to code reviews, performance tuning, and platform improvements across frontend and backend systems.

Qualifications

• 5+ years of software development experience
• Hands-on with Angular, TypeScript, HTML5, CSS3, and responsive design
• Strong NestJS, Node.js, RESTful API creation, and PostgreSQL tuning
• Solid TypeORM and relational DB design
• Experience with RxJS, state management (NgRx or similar), and asynchronous UI patterns
• Proficient with Git workflows and CI/CD
• Knowledge of authentication (JWT, OAuth/OIDC) and security basics
• English at B2 level or higher
• Nice to have Docker, cloud environments (Azure or AWS), streaming APIs, AI/LLM integrations

Responsibilities

• Implement, verify, and deliver new features across frontend and backend systems
• Develop responsive, accessible Angular UIs that integrate smoothly with NestJS APIs
• Build RESTful microservices for session handling, streaming capabilities, and platform integrations
• Architect and tune PostgreSQL schemas, queries, and ORM-based data layers
• Create and maintain unit and integration tests to protect code quality
• Support CI/CD pipeline development and align with application security standards
• Analyze and fix defects from UI through API to database
• Collaborate with product managers, UX designers, and platform engineers to complete features
• Perform code reviews and maintain team coding standards

Skills

Angular

TypeScript

HTML5

CSS3

Responsive design

RxJS

NgRx

RESTful API

Git workflows

Tools

NestJS

Node.js

PostgreSQL

TypeORM

Jest

Karma/Jasmine

Nx monorepos

CI/CD

Docker

Job description

We are searching for a Senior Full Stack Developer (Angular & Node.js) to build maintainable full-stack solutions for an enterprise AI-driven platform. You will deliver Angular components, NestJS RESTful microservices, and PostgreSQL-backed features, including streaming integrations, while partnering in Agile and investing in tests, CI/CD, and security.

Responsibilities

• Implement, verify, and deliver new features across frontend and backend systems
• Develop responsive, accessible Angular UIs that integrate smoothly with NestJS APIs
• Build RESTful microservices for session handling, streaming capabilities, and platform integrations
• Architect and tune PostgreSQL schemas, queries, and ORM-based data layers
• Create and maintain unit and integration tests to protect code quality
• Support CI/CD pipeline development and align with application security standards
• Analyze and fix defects from UI through API to database
• Collaborate with product managers, UX designers, and platform engineers to complete features
• Perform code reviews and maintain team coding standards

Requirements

• Relevant experience including 5+ years of experience in software development
• Hands-on skills with Angular, TypeScript, HTML5, CSS3, and responsive design principles
• Strong expertise in NestJS, Node.js, RESTful API creation, and PostgreSQL performance tuning
• Solid grasp of TypeORM and relational database design
• Experience using RxJS, state management approaches (NgRx or equivalent), and asynchronous UI patterns
• Proven ability to build reusable UI components and shared Angular libraries in monorepo setups
• Familiarity with Jest and Karma/Jasmine for testing practices
• Comfortable use of Git-based workflows and CI/CD practices
• Understanding of authentication/authorization approaches (JWT, OAuth/OIDC) and security fundamentals
• Ability to move across multiple codebases and solve problems end to end
• English language skills at B2 (Upper-Intermediate) level or above
• Nice to have Experience with Docker, microservices design, and cloud environments (Azure or AWS)
• Exposure to real-time or streaming APIs like SSE
• Experience integrating AI or LLM technologies, including multi-agent systems and workflow-driven conversational tools
• Knowledge of Nx monorepos, feature flag tools, or enterprise portal design
• Background in session management/observability or experience in energy and utility sectors