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Smartbit Technology

Mid-level Backend Developer

Posted Updated
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The Job

  • Develop and maintain backend systems for CMS, CRM platform / Loyalty Program, or AI tools.
  • Design, build, and optimize APIs and server systems to handle millions of daily requests
  • Integrate backend services such as authentication, payment, leaderboard, chat, matchmaking, and events.
  • Collaborate closely with frontend/client teams to ensure performance and client experience
  • Optimize server performance, scalability, and high concurrency handling.
  • Write technical documentation and follow software development processes (code review, CI/CD)

Your Skills and Experience

  • At least 2+ years of experience in Go / Node.js / Java and agree to switch to Go.
  • Proficient in Go (can be trained).
  • Experience with API gateway tools: Kong, KrakenD, or Express Gateway.
  • Knowledge of real-time communication: / WebSocket, NATS, MQTT, or Redis pub-sub.
  • Familiarity with microservice frameworks: NestJS, Go (microservices), Java Spring Boot 3.
  • Experience with authentication & authorization: Keycloak (OpenID) + JWT.
  • Experience with databases: PostgreSQL, CockroachDB, or MongoDB.

Why You'll Love Working Here

Compensation & Benefits

  • 13th-month salary and performance-based bonuses linked to business results.
  • Monthly meal allowance provided after the probation period.
  • Twice-yearly performance reviews with opportunities for salary adjustments.
  • Annual company trips and engaging team-building activities to connect, recharge, and celebrate together.

Health & Wellness

  • Annual health check-ups to support employees’ long-term well-being.
  • Full participation in Social Insurance, Health Insurance, and Unemployment Insurance in accordance with company policy and applicable regulations.
  • Access to healthcare and medical support at reputable healthcare providers.

Employee Referral Program

  • Attractive referral rewards for successful hires.
  • Earn up to VND 15,000,000 for each successfully referred candidate, depending on the position.

Skills

What Middle Backend jobs ask for — and how much of it you have →
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See also

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