Senior Java Backend Engineer

About the company

We are looking for a Senior Java Backend Engineer to join a small, autonomous engineering team working on large-scale, distributed systems.

Your tasks

Java | Cassandra | Redis | Netty | Docker | Kubernetes | GitHub | Maven

Requirements

Only candidates who already have a valid work permit/right to work in Sweden should apply.

If you do not currently have a valid Swedish work permit/right to work in Sweden, please DO NOT apply.

ALL REQUIREMENTS ARE MANDATORY Candidates are expected to meet all the key requirements and technical criteria listed below. Please review the complete job description carefully before applying.

Key Requirements

• 5+ years of professional software engineering experience with strong backend expertise
• Deep knowledge of Java and JVM, including: JVM memory management, Garbage Collection (GC), Concurrency, Performance tuning, Virtual threads
• Strong experience building and scaling customer-facing web services
• Solid understanding of distributed systems and distributed data architectures
• Experience with Cassandra, Redis, Memcached, or similar technologies
• Experience building REST services using Netty or similar frameworks
• Hands-on experience with CI/CD, automated testing, and software delivery
• Strong communication skills and ability to work independently in a fast-changing environment

Nice to Have

• Cryptography/security knowledge: PKCS, KMIP, X.509, AES, KDF, CA
• Exposure to ML systems/frameworks
• Experience with GitHub, Maven, Docker, Kubernetes, Spinnaker
• Experience with privacy-sensitive or security-critical systems

Other

Location & Work Model

• Malmö, Sweden
• 100% On-site
• English-speaking environment
• Relocation required if not already based in Malmö

Job Details

• Job Type: Contract basis (2 year)
• Joining: Immediate joiners only
• Work Permit: Valid work permit in Sweden is mandatory
• Opportunity: Long-term contract opportunity

Important

• Valid work permit in Sweden is mandatory.
• Only immediate joiners will be considered.
• This is a contract position.
• 100% on-site in Malmö, Sweden.