Freelance Senior Backend Engineer (node.js/postgresql) Remote

Home Based, ZA, South Africa

Job Description

About Us



We are a Database / B2B SaaS platform for international trade intelligence. We help companies find buyers and suppliers using global trade data.

The Role



We are looking for a backend developer to strengthen our architecture, optimize performance, and ensure the platform handles growth smoothly.

YOUR MISSION:


? Add test coverage + CI/CD pipeline
? Fix database issues (race conditions, connection pooling, query optimization)
? Implement performance fixes (pagination, caching)
? Review architecture for scale
? Set up monitoring & structured logging
? Secure & optimize API routes
? Background jobs & webhooks reliability (Inngest)

TECH STACK:



Next.js 15 (API Routes, Server Actions) PostgreSQL + ClickHouse Vercel, Inngest, Clerk

MUST HAVE:



5+ years Node.js/TypeScript backend PostgreSQL (transactions, performance) REST API design & security Testing Database architecture & schema design Experience stabilizing existing codebases, not just greenfield

Working Style



Fully remote, async-first, 40 hours/week Daily async updates (Slack/Loom) Daily 2 x 30-min video call Type: Full-time Start: ASAP Opportunity: Long-term NO AGENCY
Job Type: Contract

Contract length: 6 months (Freelance)

Job Type: Temp to perm
Contract length: 6 months

Pay: R20000,00 - R35000,00 per month

Application Question(s):

Link your GitHub profile (we check account age & commit history) Link ONE specific commit/PR where you fixed a performance issue or added tests. Explain in 2 sentences what you did. Describe a production bug YOU caused. What happened, how did you find it, how did you fix it? What's the largest database you've worked with? (row count, table size, tech). How did you optimize slow queries? Give specific numbers. List 2 backend projects you worked on: tech stack, database size, your role. Be specific.
Work Location: Remote

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Job Detail

  • Job Id
    JD1633223
  • Industry
    Not mentioned
  • Total Positions
    1
  • Job Type:
    Full Time
  • Salary:
    Not mentioned
  • Employment Status
    Permanent
  • Job Location
    Home Based, ZA, South Africa
  • Education
    Not mentioned