About the Role
We’re building a mobile-first information platform and are approaching production launch. We’re looking for a Senior Backend Software Engineer to co-own our backend architecture and ensure the system is scalable, reliable, and production-ready.
This role is ideal for someone who enjoys designing systems and running them in the real world — handling performance bottlenecks, debugging production issues, and improving reliability as usage grows.
You’ll work closely with a small team and have meaningful influence over architecture, infrastructure decisions, and engineering practices.
What You’ll Do
System Design & Scalability
Review and improve backend system architecture for scale and reliabilityIdentify and resolve performance bottlenecks across services, databases, and cachesDesign data models and APIs that scale as traffic and usage growImprove caching strategies and consistency patternsDatabase & Performance
Optimize MySQL schemas, queries, and indexing strategiesAnalyze slow queries and improve transaction performancePlan for read scaling (replicas, partitioning strategies, etc.)Production Reliability & Operations
Improve observability: logging, metrics, tracing, dashboards, and alertsDebug and resolve production issues, including intermittent and edge-case failuresDesign systems with resilience in mind (timeouts, retries, circuit breakers)Participate in on-call and incident response as neededRelease Safety & Engineering Discipline
Improve deployment safety (blue-green, canary, rollback strategies)Design safe database migration and backward-compatible changesContribute to engineering best practices and post-incident improvements
Our Tech Stack
Backend: Java, Spring BootInfrastructure: AWS ECS (Fargate), ALB, CloudWatchDatabase: MySQL (RDS)Caching: AWS ElastiCache (Redis)Client: React Native (mobile)CI/CD: GitHub ActionsExperience with similar stacks is welcome; deep backend and system design fundamentals matter most.
What We’re Looking For
Required
5+ years of backend engineering experienceStrong system design and distributed systems fundamentalsExperience building and operating production backend servicesSolid understanding of relational databases and query optimizationExperience with cloud infrastructure (AWS preferred)Ability to debug complex issues under real-world constraintsFluent spoken Mandarin required; ability to participate in technical discussions and collaborate with Mandarin-speaking stakeholders.Strong Plus
Experience with Spring Boot in high-traffic systemsHands-on experience with MySQL performance tuningExperience with caching systemsFamiliarity with observability tools (metrics, tracing, logging)Startup or small-team experience with high ownershipCompany DescriptionGoodConnex is decentralized digital bulletin board helps you discover, offer, and exchange local services—without commissions, algorithms, or corporate middlemen getting in the way.Company DescriptionGoodConnex is decentralized digital bulletin board helps you discover, offer, and exchange local services—without commissions, algorithms, or corporate middlemen getting in the way. Read Less