Back End Developer ( Golang)

Backend Developer (Golang)I. COMPANY OVERVIEWUnity Sport is a High-Performance Sports Tech Hub. We don't just build apps; we architect the backbone of real-time sports intelligence.While our name suggests harmony, our tech stack deals with the intensity of millions of concurrent connections and sub-second data delivery. We specialize in processing massive streams of global sports data where every millisecond counts.Our mission is to solve the ultimate engineering challenge: delivering "The Moment" to millions of fans worldwide, exactly when it happens—whether it is a match-winning goal in Football or a decisive spike in Volleyball.II. JOB OBJECTIVES Build and scale backend services primarily in Golang for realtime API workloads.Ensure ultra-fast time-to-first-byte (TTFB), resilient caching, efficient database offload, and stable high-concurrency performance (target: 3M MAU / 1M CCU in future scaling stages).III. KEY RESPONSIBILITIES• Develop and optimize high-concurrency backend services and APIs in Golang.• Refactor CPU-blocking or heavy I/O logic to keep the event loop (and your brain) healthy.• Improve performance observability and error handling: integrate Prometheus, Grafana, Sentry, and our internal APM stack.• Work with DevOps on Kubernetes (GKE or on-prem clusters), autoscaling (CPU/Memory or HPA), and caching strategy support.• Design or extend caching patterns (e.g., cache-aside, stale-while-revalidate) with Redis or similar realtime-support backing stores. • Build performance test suites and scripts: k6, Locust, Artillery, or whatever doesn't set your laptop on fire.IV. REQUIRED SKILLS & EXPERIENCEMust-Have Skills ✔  Experience: 2 - 3 years ✔ Backend service engineering: advanced proficiency with Golang. ✔ API & performance optimization experience under high concurrency. ✔ Caching experience: Redis, NGINX reverse proxy caching, CDN rules. ✔ Database tuning: indexing & slow query profiling (MySQL/ PostgreSQL). ✔ DevOps collaboration mindset (infra, autoscale, monitoring).Nice-To-Have • Kubernetes experience (GKE or on-prem) • Experience building internal API or caching architecture proposals • Sports domain curiosity (football, basketball, tennis, etc.) • Ability to take ownership of features and lead technical direction as platform scalesV. BENEFITSCompetitive Pay & Bonuses: Attractive project-based bonuses and salary reviews every 6 months.Weekly pickleballs…with attractive awardErgonomic Chairs: Work comfortably with high-quality ergonomic seating.Free Snacks & Coffee: Daily complimentary snacks and coffee.Team Bonding: Enjoy happy hours, birthday parties, and annual company trips.Health & Wellness: Annual health check-ups to keep you at your best.Premium Gym Access: Free membership at a 5-star fitness club,VI. WORKING HOURS & LOCATIONWorking Hours: 8:30 AM – 17:30 PM (Monday to Friday)Location: Unity Office, Room 05.12, 628A Vo Nguyen Giap, An Khanh Ward, Thu Duc City (former District 2), Ho Chi Minh City