{"schemaVersion":"jobsearcher.job.v1","id":"c20499f7a950a81079b3e34c","url":"https://jobsearcher.com/jobs/c20499f7a950a81079b3e34c","canonicalUrl":"https://jobsearcher.com/jobs/c20499f7a950a81079b3e34c","title":"Java Backend Engineer (IM Server)","description":"Responsibilities1. Design & implement IM server.2. Develop video/audio conferencing modules.3. Build file management.4. Implement calendar & scheduling: events, invitations, conflict detection, reminders, external integration.5. Solve high-concurrency, low-latency, high-availability challenges.6. Design distributed components: message routing, push, offline messages, data consistency.7. Collaborate with product/client/infra teams on APIs & data models.8. Performance tuning, capacity planning, fault-tolerance for core services.9. Troubleshoot production issues, root cause analysis, monitoring & alerting.10. Code reviews, documentation, knowledge sharing.Requirements1. Bachelor's degree or above in Computer Science or related fields; 3+ years Java backend.2. Strong Java, concurrency, networking, JVM tuning.3. Familiar with WebSocket/MQTT/SIP/WebRTC signaling is a plus.4. File storage, access control, or calendar logic experience preferred.5. Solid system design; high-traffic, low-latency experience.6. Strong problem-solving, online debugging, performance optimization.7. Good communication, ownership, responsibility.","company":"Temu","rawCompany":"temu","city":"Denver","state":"CO","isRemote":false,"isActive":false,"createdAt":"2026-10-12T09:06:46.828Z","occupations":[{"code":"15-1252.00","title":"Software Developers","slug":"software-developers"},{"code":"15-1299.08","title":"Computer Systems Engineers/Architects","slug":"computer-systems-engineers-architects"},{"code":"15-1254.00","title":"Web Developers","slug":"web-developers"}],"industries":[{"code":"541512","title":"Computer Systems Design Services","slug":"computer-systems-design-services"},{"code":"541511","title":"Custom Computer Programming Services","slug":"custom-computer-programming-services"},{"code":"513210","title":"Software Publishers","slug":"software-publishers"}],"jobPosting":{"@context":"https://schema.org","@type":"JobPosting","title":"Java Backend Engineer (IM Server)","description":"Responsibilities1. Design & implement IM server.2. Develop video/audio conferencing modules.3. Build file management.4. Implement calendar & scheduling: events, invitations, conflict detection, reminders, external integration.5. Solve high-concurrency, low-latency, high-availability challenges.6. Design distributed components: message routing, push, offline messages, data consistency.7. Collaborate with product/client/infra teams on APIs & data models.8. Performance tuning, capacity planning, fault-tolerance for core services.9. Troubleshoot production issues, root cause analysis, monitoring & alerting.10. Code reviews, documentation, knowledge sharing.Requirements1. Bachelor's degree or above in Computer Science or related fields; 3+ years Java backend.2. Strong Java, concurrency, networking, JVM tuning.3. Familiar with WebSocket/MQTT/SIP/WebRTC signaling is a plus.4. File storage, access control, or calendar logic experience preferred.5. Solid system design; high-traffic, low-latency experience.6. Strong problem-solving, online debugging, performance optimization.7. Good communication, ownership, responsibility.","datePosted":"2026-10-12T09:06:46.828Z","dateModified":"2026-10-12T09:06:46.828Z","hiringOrganization":{"@type":"Organization","name":"Temu","sameAs":"https://jobsearcher.com"},"jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"Denver","addressRegion":"CO","addressCountry":"US"}},"identifier":{"@type":"PropertyValue","name":"JobSearcher","value":"c20499f7a950a81079b3e34c"},"url":"https://jobsearcher.com/jobs/c20499f7a950a81079b3e34c"}}