Java Full Stack Developer

Randstad Polska Sp. z o.o.; Warszawa; Hybrid; PLN 180,000 - 260,000; Full time

Benefits offered by this job

Hybrid work model

Training budget

Private healthcare

Life insurance

Job summary

Randstad Polska Sp. z o.o. in Warsaw is seeking an experienced Java Full Stack Developer to join our engineering team in a hybrid model.

You will design scalable microservices with Java 17 and Spring Boot, build modern frontend applications using Angular, and explore Generative AI integrations in our products.

This role offers a dynamic, collaborative environment, access to training, and a path to technical leadership as you work with Docker, Kubernetes, and CI/CD in a modern cloud stack.

Qualifications

• Backend with Java 17 and Spring Boot, microservices.
• Frontend with Angular, TypeScript, RxJS.
• Experience designing secure REST APIs and databases.
• Familiar with OWASP, OAuth2, and clean architecture.

Responsibilities

• Design and develop frontend with Angular and backend microservices.
• Build secure REST APIs for MongoDB and SQL.
• Write tests with JUnit, Mockito, Jasmine and ensure code quality.
• Containerize with Docker; deploy to Kubernetes/OpenShift; maintain CI/CD.
• Improve performance, observability, and resilience.
• Collaborate in Agile teams; explore Generative AI integrations.

Skills

Java 17

Spring Boot

Angular

TypeScript

RxJS

NgRx

REST APIs

MongoDB

PostgreSQL

MySQL

Oracle

JUnit

Mockito

Jasmine

Karma

OWASP

OAuth2

Docker

Kubernetes

OpenShift

CI/CD

Jenkins

GitHub Actions

LLM integration

Tools

Swagger/OpenAPI

Job description

We are looking for an experienced Java Full Stack Developer to join our engineering team in Warsaw in a hybrid model. In this role, you will design scalable microservices with Java 17 and Spring Boot, build modern frontend applications using Angular, and have the opportunity to explore hands-on Generative AI integrations in our products.

What will your tasks involve?

• Design & Develop: Build responsive frontend applications using Angular (12+) and scalable backend microservices with Java 17 and Spring Boot.

• APIs & Databases: Implement secure RESTful APIs and optimize data models for both MongoDB and SQL databases.

• Quality & Security: Write comprehensive tests (JUnit, Mockito, Jasmine) and ensure code meets enterprise architecture and security standards (OWASP, OAuth2).

• DevOps & Cloud: Containerize applications using Docker, deploy on Kubernetes/OpenShift, and maintain CI/CD pipelines.

• Performance & Support: Implement monitoring/observability, optimize system resilience (caching, circuit breakers), and resolve production issues (RCA).

• Agile & AI: Collaborate closely with cross-functional teams in an Agile environment and explore Generative AI / LLM integrations.

What we expect from you?

• Backend Proficiency: Solid hands-on experience with Java 17, Spring Boot, Spring MVC/WebFlux, and microservices architecture patterns.

• Frontend Skills: Strong expertise in Angular (12+), TypeScript, RxJS, NgRx, modern HTML5/CSS3, and responsive UI principles.

• APIs & Databases: Practical experience designing secure RESTful APIs (OpenAPI/Swagger) and working with both MongoDB and relational databases (PostgreSQL, MySQL, Oracle).

• Testing & Quality Standards: Familiarity with testing frameworks (JUnit, Mockito, Jasmine/Karma) and clean coding practices (DDD, layered architecture, OWASP security).

• Agile Mindset: Experience working effectively within cross-functional teams in an Agile/Scrum delivery environment.

• Nice to Have: Hands-on exposure to Docker, Kubernetes, OpenShift, CI/CD pipelines (Jenkins, GitHub Actions), or initial experience integrating LLM/Gen AI into applications.

What you can expect from us?

• Stable Employment: Permanent, full-time employment contract with a competitive salary package.

• Balanced Hybrid Model: A flexible setup with 3 days in our modern Warsaw office and 2 days remote.

• Cutting-Edge Stack: Hands-on work with modern technologies (Java 17, Cloud/OpenShift) and opportunities to explore Gen AI / LLM implementations.

• Professional Growth: Dedicated budget for training, certifications, tech conferences, and clear career progression paths.

• Comprehensive Benefits: Premium private healthcare, life insurance, sports card (e.g., MultiSport), and high-spec hardware/workstation setup.

• Engineering Culture: A collaborative Agile environment that champions clean code, continuous learning, and architectural autonomy.

this job offer is intended for people over 18 years of age