Principal Server Engineer

UserWise

. Design, build, and maintain Go/Python backend services for live, high-traffic game titles .

Posted 9/22/2026full-timeRemote • Serbia, Romania, Hungary, Turkey, SpainLeadWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates extensive expertise in Go and Python backend development, with a strong focus on performance tuning, database schema design, and scalable system architecture. Proven ability to lead investigations into production performance issues and optimize backend services for high-traffic environments.

Highest-signal resume keywords

Go ProgrammingPython ProgrammingPostgreSQL Database DesignRedis CachingPerformance Tuning

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Go ProgrammingPython ProgrammingPostgreSQLRedisKeyDBMemcachedTDDBDDLoad TestingGCP

Tools & Technologies

GitHub ActionsGitLab CIPrometheusDatadogNakama Framework

Industry Keywords

High-Traffic Game TitlesReal-Time MultiplayerScalable SystemsCPU OptimizationMemory Leak Resolution

Tech Stack

Tools & technologies

Google Cloud PlatformGRPCLuaPostgresPrometheusPythonRedisGo

About the role

Key responsibilities & impact

Design, build, and maintain Go/Python backend services for live, high-traffic game titles
Own database schema design and query performance across PostgreSQL systems
Drive horizontal scaling strategy by optimizing CPU/memory footprint and reducing lock contention
Profile and resolve memory leaks, CPU spikes, and deadlocks in production
Lead root-cause investigations for performance issues and outages from detection through resolution
Architect and maintain in-memory caching/state layers using Redis, KeyDB, or Memcached
Design and run load tests to identify breaking points before release
Own backend systems powering live games supporting 1M+ DAU
Work closely with the engineering team on schema design and incident response

Requirements

What you’ll need

8+ years of experience
Deep Go and Python expertise, including language internals, execution models, and performance tuning
Strong PostgreSQL fluency, including scalable schema design, query plan analysis, and index strategy optimization
Proven experience scaling systems supporting 350k+ DAU
Hands-on profiling experience identifying and resolving memory leaks, CPU spikes, and deadlocks
At least 2 concrete examples of complex production performance issues or outages, including root cause analysis and resolution methodology
At least 2 released production projects as a core backend engineer handling live traffic
Hands-on experience with Redis, KeyDB, or Memcached
Solid TDD/BDD judgment and practical load-testing experience, such as Artillery
Practical experience with the Nakama framework, including custom Go/Lua modules, matchmakers, storage engine, and real-time multiplayer sockets
Practical GCP/Google App Engine experience deploying, monitoring, and scaling serverless/container services
CI/CD and DevOps experience with GitHub Actions or GitLab CI (nice to have)
Monitoring and alerting experience with Prometheus or Datadog (nice to have)
Strong grasp of networking protocols including WebSockets, gRPC/HTTP2, and UDP/TCP tuning for low-latency real-time systems (nice to have)

Benefits

Comp & perks

Market competitive, tax-free USD salaries
Paid Time Off
Annual Performance Reviews