Senior Java Fullstack Developer

07/10/25 5500 – 6500 USD / Month Warsaw
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    Senior Java Fullstack Developer

    We are seeking a highly experienced and motivated Senior Java Fullstack Developer to join our engineering team. This is a hands-on technical role for a developer who enjoys solving complex challenges and contributing across both backend and frontend systems. You will play a key role in building scalable, reliable, and high-performance software solutions that power our next-generation applications.

    Key Responsibilities

    • Full Stack Development: Design, develop, and maintain features across the entire application stack — from backend services to modern, responsive user interfaces.

    • Backend Engineering: Build and enhance scalable backend services and APIs using Java, Spring Boot, and event-driven architectures (Kafka).

    • Frontend Contribution: Develop interactive and user-friendly frontends using modern JavaScript frameworks such as React.

    • Data Management: Work with PostgreSQL and other data stores, ensuring high performance, reliability, and integrity.

    • Quality & DevOps: Promote code quality, implement unit and integration testing, and collaborate on CI/CD pipeline improvements.

    • Architecture & Collaboration: Participate in technical design discussions, code reviews, and close collaboration with Product Owners, Developers, and QA Engineers.

    Essential Requirements

    • Experience: Proven experience as a Senior Full Stack Developer or in a similar role.

    • Backend Expertise: Strong proficiency in Java (or Kotlin) and the Spring Boot framework.

    • Data & Messaging: Hands-on experience with PostgreSQL (or other relational databases) and Kafka.

    • Frontend Expertise: Proficiency with modern JavaScript frameworks, preferably React.

    • Architecture & DevOps: Solid understanding of microservices architecture, Docker, and Kubernetes.

    • Methodology: Experience working within Agile/Scrum teams and following modern development practices.

    Preferred Qualifications

    • Experience with cloud environments (AWS, Azure, or GCP).

    • Familiarity with monitoring and observability tools.

    • Proven ability to mentor and guide junior developers.

    What We Offer

    • Competitive compensation and professional growth opportunities.

    • A remote-first, flexible work culture with global colleagues.

    • Opportunity to work on innovative projects in a fast-paced environment.

    • A supportive engineering culture focused on technical excellence and learning.

    Over 60% of our candidates get invited to an interview with our Clients.

    Apply with the form below and we will reach out to you in the next 24h