Full Stack Engineer – Kotlin/React, APIs & Docker

SD Solutions; Warszawa; On-site; PLN 60,000 - 90,000; Full time

Job summary

SD Solutions is looking for a talented Full Stack Developer in Warsaw, Poland, for a security validation platform. You will develop backend services using Kotlin and modern frontends with React + TypeScript. Responsibilities include API design, Docker containerization, and database optimization.

Candidates should have 3-5 years of experience with strong Kotlin and React skills. Hands-on Docker experience and security awareness are essential. Join a company that helps security teams continuously test their defenses.

Qualifications

• 3–5+ years of professional experience in software development.
• Strong Kotlin/JVM backend skills; able to architect services independently.
• Hands-on Docker experience in production environments.

Responsibilities

• Develop backend services using Kotlin and modern frontends with React + TypeScript.
• Design and implement REST APIs and real-time communication layers.
• Containerize applications using Docker and orchestrate with docker-compose.

Skills

Kotlin/JVM backend skills

React/TypeScript frontend skills

Docker

REST API design

Database design and query optimization

Security awareness

Tools

PostgreSQL

Job description

SD Solutions is looking for a talented Full Stack Developer in Warsaw, Poland, for a security validation platform. You will develop backend services using Kotlin and modern frontends with React + TypeScript. Responsibilities include API design, Docker containerization, and database optimization.

Candidates should have 3-5 years of experience with strong Kotlin and React skills. Hands-on Docker experience and security awareness are essential. Join a company that helps security teams continuously test their defenses.