Senior Full Stack Web Developer for Platform Modernization

CoreData Systems

Contract · Remote · Flexible hours

About the role

CoreData Systems is modernizing a legacy production platform that must stay online 24/7. We need a Full Stack Web Developer to redesign critical services, improve UI responsiveness, and ensure zero‑downtime deployments.

Key responsibilities

• Refactor and containerize existing Node.js services for seamless rollout
• Build new React components to replace outdated UI screens
• Implement feature flags and blue‑green deployment pipelines
• Write comprehensive unit and integration tests for both front‑end and back‑end
• Collaborate with QA and DevOps to monitor performance during migration

Must-have skills

• Strong experience with React and modern JavaScript (ES6+)
• Proficient in NodeJS API development
• Hands‑on knowledge of MongoDB schema design and optimization
• Understanding of zero‑downtime deployment strategies

Nice to have

• Familiarity with Docker and Kubernetes
• Experience with CI/CD tools like GitHub Actions or Jenkins