Back End Developer

Senior Backend Engineer (Golang)

Germany, Berlin - Hybrid/Remote

Permanent

Up to €90,000

Interested in building systems where every microsecond shapes the user experience?

Join a team developing real-time streaming infrastructure used globally for interactive events, productions, and digital collaboration. You’ll work on backend services that must remain fast, reliable, and resilient under constantly changing network conditions.

We’re seeking a Senior Backend Engineer with strong Go experience to design and optimize the core engines behind ultra-low-latency media delivery. You’ll influence key architectural decisions, improve system performance, and ensure the platform runs smoothly at scale.

Responsibilities & Challenges

• Build and enhance real-time backend components in Go
• Drive architectural improvements for throughput, latency, and reliability
• Optimize networking layers—including TCP/UDP, HTTP/1/2/3, buffering, and concurrency
• Improve observability, testing, benchmarking, and deployment safety
• Translate requirements into scalable backend solutions
• Mentor teammates and contribute to engineering best practices
• Maintain sub-second streaming across unstable network environments
• Ensure efficient fan-out and adaptive scaling under heavy load
• Handle packet loss, jitter, and bandwidth shifts gracefully
• Investigate rare performance and networking issues with strong instrumentation
• Deliver backward-compatible updates without disrupting live traffic

Skills & Experience Required

• Senior-level backend engineering experience with strong Go proficiency
• Background in high-performance, low-latency, or distributed systems
• Solid understanding of networking fundamentals (TCP, UDP, HTTP/1/2/3)
• Experience with concurrency, async design, and Linux-based networking
• Familiarity with Git workflows, CI pipelines, and performance profiling
• Data-driven engineering approach—measure, benchmark, then optimize
• Bonus: experience with RTMP, WebRTC, WebTransport/MOQ, C/C++, Docker, or CI/CD

If you have a passion for video streaming, and this sounds like an interesting opportunity, apply now!

5V Video are acting as an Employment Agency for the purposes of this job vacancy. We offer a reward scheme if you can recommend someone for this position, up to €250 for you and an additional €250 to a charity of your choice, 5V Video are recognised talent solutions experts within Video and Broadcast Technology working across Europe, the UK and North America.