Design, develop and maintain APIs and backend services using stacks such as Node.js, .NET or equivalents.
Create and maintain integrations between internal and external systems via REST and/or GraphQL.
Model and optimize data structures and queries in SQL and/or NoSQL databases.
Implement security, authentication and authorization mechanisms (e.g., OAuth2, JWT).
Develop asynchronous processes, queues, workers and caching strategies.
Build modular, responsive and accessible interfaces using React (with Hooks).
Create reusable components and follow UI / Design System patterns.
Manage state with Redux, Context API or equivalent libraries.
Apply performance best practices (lazy loading, code splitting, optimizations).
Participate in defining application architecture, evaluating technical trade-offs.
Ensure code quality, version control, code reviews and engineering standards.
Conduct POCs and technical spikes to validate solutions.
Work closely with product, UX, QA and business teams.

Senior Full Stack Developer

Key skills