Senior Java Developer
Engineering Worldwide full-time remote 🎯 Senior
About This Role
We are looking for a Senior Java Developer to join our engineering team and take a leading role in building and scaling a mission-critical backend platform. This is a hands-on position for an experienced engineer who combines deep Java expertise with a strong sense of technical ownership and a collaborative approach to team development.
Responsibilities
- Feature & Core Architecture Development: Lead the design, implementation, and optimization of mission-critical business and platform features using pure Java and modern frameworks.
- Infrastructure & Concurrency Management: Manage and scale the complex, distributed backend infrastructure necessary to ensure smooth cross-platform capabilities and high-concurrency operations.
- Data Layer Optimization: Write and maintain complex application modules capable of processing and storing huge amounts of data across relational databases like Oracle and MySQL.
- Code Quality & Technical Leadership: Perform thorough code reviews and advise technical decisions to help elevate overall project standards and guide team capabilities.
- Automation & Deployment Support: Assist in writing deployment scripts and driving test, build, and deployment automation to accelerate operations workflows.
- Test-Driven Engineering: Ensure high platform stability by writing automated unit and integration tests using frameworks such as JUnit and TestNG.
Requirements
- Education: Bachelor’s or Master’s degree in Mathematics, Computer Science, or a closely related technical field.
- Core Engineering Experience: 9+ years of professional software development experience, primarily dedicated to the Java platform.
- Framework Mastery: Deep, hands-on proficiency with the Spring Ecosystem (including Spring Boot, Spring MVC, and Spring Batch) alongside JPA specification and Hibernate.
- Database Expertise: Solid background with databases such as Oracle and MySQL, with a proven track record of writing clean queries and maintaining applications dealing with heavy data volumes.
- DevOps & Tooling Fluency: Familiarity with build automation tools (Maven, Gradle) , CI/CD automation platforms (Jenkins, TeamCity) , and modern code review structures (Git, BitBucket).
- Methodology & Soft Skills: Strong grounding in Agile Scrum workflows. Excellent problem-solving mindset with the ability to communicate efficiently in English (German language proficiency is a distinct advantage ).
Nice to Have
- A Developer First: The absolute core requirement is extensive software engineering history with deep proficiency in foundational Java concepts, memory management, and multi-threaded processing.
- High-Volume Architecture Expert: They must have real experience building and maintaining complex systems that thrive under high concurrent traffic and process massive datasets efficiently.
- Quality-Centric & Collaborative: This candidate takes pride in robust code testing, architectural design clarity, active code reviews, and providing support across cross-functional engineering loops.
Benefits
Competitive salary / Remote work opportunity / Comfortable work in your local time zone / Flexible work schedule / Professional growth and development / Multicultural working environment
Job Overview
Department Engineering
Location Worldwide
Workplace remote
Type full-time
Seniority Senior
Posted May 22, 2026
Deadline June 22, 2026
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