Senior Full-Stack Engineer
N-iX
International IT Services Company · Swiss and UK clients (under NDA)
Responsibilities
- Led the modernization of a large React and TypeScript codebase, refactoring legacy components, improving frontend architecture, extending Redux Toolkit state management, and introducing reusable patterns.
- Owned the end-to-end delivery of product features, from requirements analysis and technical design through implementation, testing, release coordination, and production validation.
- Made technical decisions on implementation strategy and system design, evaluating trade-offs, defining integration approaches, and ensuring solutions were scalable, maintainable, and aligned with business requirements.
- Owned the complete onboarding of a new brand onto the platform, covering UI adaptation, backend service changes, database migrations, automated test coverage, end-to-end testing, release preparation, and production rollout.
- Introduced React Query as the standard solution for server-state management, reducing duplicate API requests by approximately 30% through caching, request deduplication, and structured query invalidation.
- Contributed to frontend and backend architecture, defining API integration patterns, request lifecycle handling, error-management strategies, data flows, and reliability improvements for business-critical functionality.
- Established engineering quality standards by introducing ESLint, Prettier, Husky, and automated pre-commit checks for a team of 15 engineers, reducing formatting-related review feedback and improving consistency across the codebase.
- Conducted code reviews and participated in technical interviews, helping evaluate candidates, support knowledge sharing, and maintain engineering standards across the team.
- Expanded automated test coverage for more than 15 critical business flows, improving release confidence and reducing the risk of production regressions.
- Integrated AWS services including S3 and EC2 into application development and deployment workflows, supporting production infrastructure and feature delivery.
- Applied AI-assisted engineering workflows with Claude Code for legacy code analysis, complex refactoring, technical documentation, and code review, accelerating investigation and implementation while maintaining code quality.