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Lead Developer for E-commerce Backend

  • Posted:
  • Proposals: 40
  • Remote
  • #4502191
  • Open for Proposals
Yasir Ali M.Micheal E.Rameez T.Vikas M.CYTNHIA W. + 35 others have already sent a proposal.
  • 2

Description

Experience Level: Expert
Overview
We need a skilled Lead Backend Developer to modernize our E-commerce platform, ensuring seamless operation and growth. Our platform serves thousands of active customers, and this project aims to enhance performance and scalability.

Scope of work
- Analyze current backend architecture
- Identify bottlenecks and performance issues
- Create a modernization roadmap
- Design a scalable service structure
- Improve API performance
- Optimize PostgreSQL queries
- Implement Redis caching
- Improve checkout and order processing workflows
- Introduce rate limiting and security improvements
- Implement RabbitMQ for background tasks
- Improve third-party integrations
- Add fault tolerance and retry mechanisms
- Enhance logging and error handling
- Configure monitoring and alerting
- Perform load testing
- Prepare technical documentation
- Deploy updates with zero downtime


Company details
- E-commerce

Backend framework
Node.js, NestJS

Developer expertise
Performance, Databases, Security, Testing procedures, debugging, Design, Source control

Programming language
TypeScript, JavaScript

Delivery timeline
24 September 2026

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Clarification Board Ask a Question

  • Asad C.

    - Could you explain the complete checkout and order processing lifecycle?

    - Which third-party systems are currently integrated with the platform?

    - What monitoring and observability tools are currently in place? Are you using centralized logging, application performance monitoring, distributed tracing, uptime monitoring, alerting systems, or incident management workflows?

  • CYTNHIA W.

    • Approximately how many daily active users, orders, and API requests does the platform currently handle?

    • Is the application currently a monolith, modular monolith, or already partially service-oriented?

    • What are the biggest pain points today: slow APIs, database performance, checkout bottlenecks, infrastructure costs, or reliability issues?

    • Which PostgreSQL version and hosting environment are currently being used?

    • Do you already have Redis and RabbitMQ deployed, or would those be introduced as part of the modernization effort?

    • What monitoring and logging tools are currently in place (Datadog, Grafana, Prometheus, ELK, Sentry, etc.)?

    • Are there any specific third-party integrations that are known performance bottlenecks?

    • What is your target uptime and expected growth over the next 12–24 months?

    • Do you currently have automated testing, CI/CD pipelines, and staging environments available?

    • Is the goal to remain on NestJS as a modular monolith, or are you considering a gradual transition toward microservices where appropriate?