Sr. Full Stack Developer (ReactJS, .NET & Playwright)
Role Summary
Sr. Full Stack Developer responsible for designing, developing, and maintaining enterprise-grade applications using ReactJS and .NET, with a strong focus on reusable UI frameworks, scalable backend services, and automated testing using Playwright.
This role combines front-end and backend engineering expertise to deliver high-quality, secure, scalable, and maintainable solutions. The individual will drive adoption of modern engineering practices, component-based development, and test automation while collaborating closely with Product, UX, and Engineering teams.
Roles & Responsibilities
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Design, develop, and maintain scalable web applications using ReactJS, .NET Core, and associated technologies.
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Build reusable UI components, shared libraries, and design system assets to promote consistency across applications.
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Develop and maintain RESTful APIs, backend services, and microservices using ASP.NET Core/.NET Core.
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Create, maintain, and enhance automated testing frameworks using Playwright.
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Collaborate with Product Managers, UX Designers, and Engineering teams to deliver high-quality user experiences.
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Ensure applications adhere to performance, scalability, accessibility, and security best practices.
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Participate in architecture discussions and contribute to technical design decisions.
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Conduct code reviews and promote engineering best practices across teams.
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Integrate front-end applications with backend APIs and third-party services.
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Troubleshoot and resolve application, API, and performance issues.
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Contribute to CI/CD pipelines and deployment automation processes.
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Mentor junior developers and drive continuous improvement initiatives.
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Champion quality engineering through test automation and code quality standards.
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Develop and maintain technical documentation, reusable templates, and engineering standards.
Technical Expectations
Frontend Development
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Strong expertise in ReactJS, Hooks, Component Lifecycle, State Management, and Component Design Patterns.
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Proficiency in JavaScript (ES6+), TypeScript, HTML5, CSS3, and SASS.
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Experience building reusable component libraries and design systems.
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Strong understanding of responsive design and accessibility (WCAG).
Backend Development
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Strong hands-on experience with .NET Core / ASP.NET Core.
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Experience developing REST APIs and microservices.
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Knowledge of authentication, authorization, and application security best practices.
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Experience with SQL Server and Entity Framework.
Test Automation
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Hands-on experience with Playwright for UI and End-to-End automation.
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Experience building automated regression and functional test suites.
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Integration of automated tests into CI/CD pipelines.
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Familiarity with Jest, React Testing Library, or equivalent testing frameworks.
Tools & Practices
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Git and source control best practices.
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Azure DevOps, GitHub Actions, Jenkins, or similar CI/CD tools.
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Agile/Scrum methodologies.
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Storybook or component-driven development tools.
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Exposure to Azure Cloud services is preferred.
Core Competencies
Full Stack Engineering
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Delivers scalable and maintainable solutions across front-end and backend layers.
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Strong understanding of application architecture and integration patterns.
Quality & Automation
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Advocates automation-first development practices.
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Ensures comprehensive test coverage and application reliability.
Collaboration & Leadership
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Effectively collaborates across cross-functional teams.
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Mentors engineers and drives technical excellence.
Ownership & Execution
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Converts business requirements into scalable technical solutions.
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Takes end-to-end ownership of design, development, testing, and deployment.
Professional Skills & Experience
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Experience building enterprise SaaS or product-based applications.
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Strong expertise across ReactJS, .NET Core, and Playwright.
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Experience with modern software development lifecycle and Agile delivery.
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Strong analytical and problem-solving skills.
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Excellent communication and stakeholder management abilities.
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Ability to mentor and influence technical decisions.
Education & Experience
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Bachelor's degree in Computer Science, Engineering, or related discipline.
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5-8 years of professional software development experience.
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Minimum 3+ years hands-on experience with ReactJS.
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Minimum 3+ years hands-on experience with .NET Core / ASP.NET Core.
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Proven experience building and maintaining Playwright automation frameworks.
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Experience with cloud-native applications and Azure is advantageous.
