Backend Software Engineer (Node.js / Full-Stack)

About the role

Vision71 Technologies builds practical software for business needs and is looking for a dependable engineer to build, debug, test, document and deliver software. Backend development is the priority, with React/Next.js contributions when needed. You will work with the technical lead and a small team on client and internal projects, full-time and on-site in Karachi.

Key responsibilities

• Build and maintain Node.js applications, REST APIs and integrations using JavaScript/TypeScript and Express, NestJS or similar frameworks.
• Design data models and efficient queries using SQL and/or MongoDB according to project needs.
• Implement authentication, authorization, validation, error handling and secure handling of credentials and business data.
• Reproduce bugs, investigate logs, fix root causes and add automated tests.
• Improve existing code, use Git branches and pull requests, and take part in code reviews.
• Contribute to React/Next.js interfaces and connect them to backend services.
• Support staging, approved deployments and production troubleshooting, with rollback planning and clear handovers.
• Break requirements into tasks, estimate realistically and raise blockers and delivery risks early.
• Maintain API documentation, setup instructions, task updates and handover notes.
• Evaluate new tools through focused prototypes when there is a clear project need.

Required profile

• Around 2-4 years of hands-on development experience preferred; strong candidates outside this range are welcome.
• Experience delivering or maintaining an application used by real users, with the ability to explain your personal contribution.
• Working knowledge of database design, queries, indexes and migrations appropriate to your stack.
• Sound judgement about maintainability, security and technical trade-offs.
• Clear communication and ability to work full-time on-site in Karachi.
• Relevant degree or equivalent demonstrable practical experience.

Required skills

• Practical Node.js and JavaScript/TypeScript, including asynchronous code, API design and debugging.
• Familiarity with React or Next.js, Git, API testing and automated testing.
• Helpful: Docker, Linux, CI/CD, cloud hosting, background jobs, queues, third-party APIs, reporting dashboards and business software integrations.

Candidates apply through LinkedIn with an accurate CV, including portfolio or repository links where possible. Shortlisted applicants may be asked to explain a past project, complete a practical exercise and discuss debugging and delivery scenarios. References are checked only after discussion with the candidate.