Senior Full Stack Developer (Angular & Node.js)

EPAM Systems; Poland; On-site; PLN 210,000 - 270,000; Full time

Job summary

EPAM Systems seeks a Senior Full Stack Developer with Angular & Node.js to build modern web experiences and backend services for an enterprise AI-driven platform.

You will design responsive Angular interfaces, wire them to NestJS APIs, and craft RESTful microservices covering session handling, streaming, and platform integrations. Expect work across UI, API, and database layers with tests, CI/CD, and security best practices.

Qualifications

• 5+ years of software development experience.
• Proficiency with Angular, TypeScript, HTML5, CSS3 and responsive design.
• Expertise in NestJS, Node.js, RESTful API creation, and PostgreSQL performance tuning.
• Strong knowledge of TypeORM and relational database design best practices.
• Experience with RxJS, state management (NgRx or equivalent), and asynchronous UI patterns.
• Ability to create reusable UI components and shared Angular libraries in monorepo setups.
• Experience with Jest and Karma/Jasmine for unit/integration tests.
• Proficiency with Git-based workflows and CI/CD practices.
• Understanding of JWT, OAuth/OIDC, and security fundamentals for auth.
• Capacity to work across multiple codebases and solve end-to-end issues.
• English at B2 level or above.
• Nice to have Docker, microservices design, and cloud environments (Azure or AWS).
• Knowledge of real-time or streaming APIs (SSE).
• Experience integrating AI/LLM technologies and multi-agent workflows.

Responsibilities

• Build, validate, and release new capabilities across the full stack.
• Design responsive Angular interfaces and connect to NestJS APIs.
• Create RESTful microservices for session handling, streaming, and integrations.
• Define PostgreSQL schemas and ORM data access layers.
• Write unit and integration tests; support CI/CD and security standards.
• Debug across UI, API, and database layers; maintain coding standards.

Skills

Angular

TypeScript

HTML5

CSS3

Responsive design

NestJS

Node.js

RESTful API

PostgreSQL

TypeORM

RxJS

NgRx

Jest

Karma/Jasmine

Git

CI/CD

JWT/OIDC security

Docker

Azure

AWS

Nx monorepos

SSE

AI/LLM experience

Tools

NestJS

Node.js

PostgreSQL

TypeORM

RxJS

NgRx

Jest

Karma/Jasmine

Git

Docker

Azure

AWS

Nx

Job description

We are seeking a Senior Full Stack Developer (Angular & Node.js) to deliver modern web experiences and backend services for an enterprise AI-driven platform.

Responsibilities

• Build, validate, and release new capabilities across the full stack
• Design responsive, accessible Angular interfaces and wire them to NestJS APIs
• Create RESTful microservices that cover session handling, streaming capabilities, and platform integrations
• Define and optimize PostgreSQL schemas, queries, and ORM-based data access layers
• Write and maintain unit and integration tests to keep reliability high
• Support CI/CD pipeline development and follow application security standards
• Debug and remediate issues across UI, API, and database layers
• Partner with product managers, UX designers, and platform engineers to deliver end-to-end features
• Conduct code reviews and help maintain consistent team coding standards

Requirements

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