Mô tả công việc
Design, develop, and maintain backend systems and REST APIs serving web and mobile applications.
Analyze requirements, propose technical solutions, design service architecture, databases, and processing flows.
Optimize performance, reliability, and scalability: caching, indexing, connection pooling, message queue.
Integrate third-party services; implement security, authorization, and session/token management.
Write technical documents and coding standards; participate in code reviews and process improvements.
Support operations (CI/CD, logging, monitoring); troubleshoot incidents and optimize infrastructure costs.
Collaborate closely with Product, Mobile, Frontend, and QA teams to deliver new features.
Yêu cầu
3-5 years of backend development experience (Middle) or 5+ years (Senior); proven experience running production services.
Proficient in [protected info] and at least one additional backend language (Java/Go/.NET/Python); solid understanding of runtime, concurrency, and I/O.
Solid knowledge of API design: idempotency, versioning, pagination; hands-on experience with popular frameworks (NestJS/Express/Spring Boot/FastAPI...).
Strong SQL skills (PostgreSQL/MySQL): query optimization, indexing, transactions & isolation; NoSQL (Redis/MongoDB) is a plus.
Experience with event systems & message queues (Kafka/RabbitMQ/SQS); understanding of event-driven design, saga/outbox, and eventual consistency.
Good knowledge of security: OAuth2/OIDC, RBAC/ABAC, TLS, input validation; preventing SQLi/XSS/SSRF.
Basic DevOps skills: Git, CI/CD (Jenkins/GitHub Actions/GitLab), Docker; Kubernetes and cloud experience (AWS/GCP/Azure) preferred.
Strong analytical, problem-solving, and clean coding skills; writing unit/integration/contract tests and clear documentation.
English: strong reading comprehension and capable of communicating in technical discussions (meetings, chat, email).
PREFERENCES
Experience with microservices: service discovery, circuit breaker, retry/backoff; observability (logging/tracing/metrics).
High-performance architecture: strategic caching, CQRS, partitioning/sharding, read replicas.
Production operations experience: on-call, RCA/postmortem.
Contributions to open-source projects, real-world products/services, or cloud certifications.
Experience with web3 (smart contracts, wallet integration, [protected info], on-chain/off-chain transactions) is a plus.
Quyền lợi
Competitive salary with annual performance review.
International, professional, and dynamic working environment using English daily.
Full social insurance package (Health, Social, Unemployment).
Company trips, teambuilding, and internal events.
Clear career path, training opportunities, and continuous professional development.
Young, creative, and open-minded culture that encourages innovation.
Thông tin chung