Note: The job is a remote job and is open to candidates in USA. Temu is seeking a highly motivated and experienced software engineer to join its team. The Java Backend Engineer will design and implement IM server infrastructure, develop communication and collaboration modules, and address distributed systems, performance, availability, and production-support challenges.

Responsibilities

• Design & implement IM server
• Develop video/audio conferencing modules
• Build file management
• Implement calendar & scheduling: events, invitations, conflict detection, reminders, external integration
• Solve high-concurrency, low-latency, high-availability challenges
• Design distributed components: message routing, push, offline messages, data consistency
• Collaborate with product/client/infra teams on APIs & data models
• Performance tuning, capacity planning, fault-tolerance for core services
• Troubleshoot production issues, root cause analysis, monitoring & alerting
• Code reviews, documentation, knowledge sharing

Skills

• Bachelor's degree or above in Computer Science or related fields; 3+ years Java backend
• Strong Java, concurrency, networking, JVM tuning
• Familiar with WebSocket/MQTT/SIP/WebRTC signaling is a plus
• Solid system design; high-traffic, low-latency experience
• Strong problem-solving, online debugging, performance optimization
• Good communication, ownership, responsibility
• File storage, access control, or calendar logic experience preferred

Benefits

• You may receive benefits depending on the nature of employment, job position, and work location. The benefits that generally apply to regular, full-time employees include: Medical, Dental, and Vision Insurance Coverage
• You may receive benefits depending on the nature of employment, job position, and work location. The benefits that generally apply to regular, full-time employees include: Paid Time Off (PTO)
• You may receive benefits depending on the nature of employment, job position, and work location. The benefits that generally apply to regular, full-time employees include: Paid Sick Leave (in accordance with applicable state and local laws)
• You may receive benefits depending on the nature of employment, job position, and work location. The benefits that generally apply to regular, full-time employees include: 402(k) Plan

Company Overview

Company H1B Sponsorship