Take ownership of the Node.js backend and perform a full technical assessment of the codebase
Identify and remediate critical security vulnerabilities and insecure integrations
Refactor unstable or low-quality code to improve reliability, maintainability, and performance
Stabilize core application flows required for production readiness
Re-establish codebase ownership by organizing and migrating repositories within the client environment
Analyze and restore CI/CD pipelines across repositories and environments
Set up and validate staging environments to support testing and release processes
Audit and stabilize third-party integrations such as payments and external platforms
Collaborate with QA and stakeholders to validate functionality and prioritize fixes
Support release readiness and launch execution ensuring system stability
Enforce a feature-freeze approach focused on stabilization and critical fixes
Contribute to defining a post-launch roadmap to support scalability and future development
Continuously improve system security, performance, and operational stability

5+ years of hands-on experience in backend development using Node.js
Bachelor’s degree in Computer Science, IT, or equivalent professional experience
Strong experience working with REST APIs and third-party integrations
Proven experience handling legacy systems, codebase audits, or technical recovery scenarios
Solid understanding of application security best practices, including secure handling of sensitive data
Hands-on experience with AWS environments and services
Experience setting up or troubleshooting CI/CD pipelines
Strong experience working with PostgreSQL databases (RDS preferred)
Familiarity with proxies, CORS, and common web security vulnerabilities (e.g., SSRF)
Ability to work in fast-paced environments with ambiguous or incomplete documentation
Strong problem-solving skills with the ability to prioritize issues based on business impact
Experience collaborating with mobile teams (React Native is a plus)
Advanced English proficiency is required, as you will work directly with US-based clients.

Senior Backend Engineer, Node.js

Key skills