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We are looking for a Senior Java Engineer to join our core backend team. This role focuses on building and optimizing resilient distributed systems that handle large-scale data processing . You will work on the architectural level to ensure system reliability and efficient resource utilization, driving technical excellence across our backend infrastructure. Responsibilities: Design and implement scalable backend services using Java and modern distributed architecture. Optimize system performance by identifying bottlenecks in asynchronous processing, memory management, and data persistence . Collaborate with the team to architect solutions that ensure high availability and system consistency . Maintain high code quality through rigorous testing, code reviews, and technical documentation. Develop and maintain secure data handling protocols and system integrity. Requirements: Bachelor’s degree in Computer Science, Software Engineering, or a related field. 5+ years of Java development experience , with deep knowledge of JVM internals (e.g., Memory Model, Garbage Collection). Proven experience in Distributed Systems (e.g., knowledge of data partitioning, synchronization, or consistency models). Solid understanding of multithreaded programming and asynchronous I/O models . Familiarity with network communication (e.g., socket programming) and high-performance storage engines. Basic understanding of data security and encryption principles is an advantage. Experience with open-source system architecture or large-scale backend infrastructure. Strong problem-solving skills and a proactive attitude toward technical challenges.
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The employers posting the most developer roles are Link Group (369 jobs), Upvanta (257), jobgether (226), and OfferZen (212). If you're applying to any of these, research their hiring patterns. They move fast and post often, which means they're either scaling hard or replacing people who didn't fit.
In your interview, expect this: 'Walk me through the last time you had to debug something that took you more than an hour. What was it, what did you try first, and what would you do differently?' Hiring managers ask this to see if you think systematically or just try random fixes. Have a real example ready with specifics.