Senior Full-Stack Engineer (Node.js, Typescript, React)

• 7+ years of professional software development experience, including substantial full-stack responsibility.
• Strong, recent experience developing production applications with React and TypeScript.
• Strong backend development experience with Node.js and TypeScript.
• Experience designing REST APIs, service layers, and maintainable data-access components.
• Solid SQL and relational database expertise, including query development, optimization, and safe parameterization.
• Hands-on experience modernizing, re-platforming, or incrementally replacing functionality within a live production system.
• Understanding of migration approaches that minimize downtime, regressions, and disruption to users.
• Strong automated-testing practices across unit and integration levels.
• Experience with Git-based development, pull requests, peer review, and CI/CD workflows.
• Practical experience using AI coding assistants as part of day-to-day software development.
• Sound judgment when assessing AI-generated code for accuracy, security, maintainability, and unintended behavior.
• Ability to document technical requirements, implementation plans, and architectural decisions clearly.
• Demonstrated ownership from discovery and design through deployment and production verification.
• Strong written communication, collaboration, and problem-solving skills.
• Ability to read and understand legacy applications built with .NET Framework and C#.
• Experience working with SQL Server or comparable relational database platforms.
• Familiarity with AWS, serverless computing, or other cloud application services.
• Experience with payment platforms or other transaction-sensitive third-party integrations.
• Experience with Playwright or a comparable browser-automation framework.
• Familiarity with feature flags, phased cutovers, parallel operation, and strangler-pattern migrations.
• Experience identifying undocumented behavior in legacy code and converting it into testable requirements.
• Experience modernizing mature SaaS applications while maintaining production stability.
• Familiarity with workflow-intensive software involving customer records, financial transactions, scheduling, or operational processes.
• Experience establishing development standards that can be sustained by an internal engineering team.

Technology Environment

• Frontend: React, TypeScript
• Backend: Node.js, TypeScript, REST APIs
• Existing Platform: Microsoft-based legacy application
• Data: SQL Server and relational databases
• Cloud: AWS and serverless services
• Testing: Unit, integration, and browser-based automated testing
• Delivery: Git, pull requests, code review, and CI/CD
• Development Tools: AI-assisted coding and code-analysis tools
• Core Competencies: Application Modernization, Incremental Migration, Data Integrity, Automated Testing, Production Stability, and Technical Documentation