Sr FullStack Developer (Any Backend + React)

Description This job posting is for an existing, active vacancy and we are looking to hire Sr FullStack Developer (Any Backend + React) in Calgary, AB, Canada (Onsite), immediately who has strong experience in React & Any backend API. Role Overview 5+ years overall experience with strong recent React experience and solid backend API development; Bachelor’s degree (or equivalent practical experience).React (strong): Build and maintain user-facing features using React (functional components, Hooks), JavaScript/TypeScript, HTML5, and CSS3.Strong understanding of component architecture, state management, and routing.Backend: Build and integrate RESTful APIs using any backend technology (e.g., Java, .NET, Node.js, Python, etc.); strong OOP fundamentals, understanding of layered architecture and basic design patterns; comfortable working with databases and API integrations.Partner with UX/product to translate requirements into responsive, accessible UI and deliver end-to-end features.Clear, proactive communication (written and verbal); ability to explain technical concepts to both technical and non-technical stakeholders.Strong problem-solving and debugging mindset; ability to break down ambiguous requirements and propose practical solutions.Write clean, testable code; perform code reviews; follow best practices and contribute to Agile delivery.Troubleshoot issues and optimize performance across UI and API layers.Proficiency with Git and familiarity with CI/CD workflows.