{"id":1908530,"url":"https://alion.io/job/weekday-senior-react-developer","title":"Senior React Developer","company":{"id":7097,"name":"Weekday","domain":"weekday.works","url":"https://alion.io/company/weekday","size_band":"51-200","is_staffing_agency":true,"employer_type":"agency","is_intermediary":false,"listed_via":null,"ats_vendor":"Workable","truth_index":{"grade":"B","score":81,"open_postings":87,"ghost_share":0,"stale_share":0.966,"repost_share":0,"time_to_fill_p50_days":5,"computed_at":"2026-10-06T05:45:30Z"}},"role":"Frontend","role_family":"Frontend","seniority":"senior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"explicit","locations":["Delhi, India"],"countries":["IN"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agile","optional":false},{"name":"ASP.NET Core","optional":false},{"name":"C#","optional":false},{"name":"CI/CD","optional":false},{"name":"Git","optional":false},{"name":"JavaScript","optional":false},{"name":"MS SQL","optional":false},{"name":"React.js","optional":false},{"name":"Rest API","optional":false},{"name":"Scrum","optional":false},{"name":"SQL","optional":false},{"name":"TypeScript","optional":false}],"status":"live","first_seen_at":"2026-10-05T13:46:31Z","employer_posted_date":"2026-10-05","last_verified_at":"2026-10-07T00:09:08Z","board_verified":true,"closed_at":null,"days_open":1,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":1},"description":"'\n: - ( - )\nExperience: 8+ yrs\nLocation: India\nJob Type: Full-time\nWe are looking for an experienced Senior React Developer to design, develop, and maintain scalable, high-performance web applications using React.js, JavaScript/TypeScript, C#/.NET, and ASP.NET Core/Web API.\nThe ideal candidate will be a strong full-stack engineer with deep expertise in modern frontend development and solid backend experience across the .NET ecosystem. You will contribute to technical design, application architecture, development, testing, performance optimisation, and production support while working closely with product, engineering, QA, and other cross-functional teams.\nRequirements\nKey Responsibilities\nDesign, develop, test, and maintain scalable web applications using React.js.\nBuild responsive, reusable, and high-performance user interfaces using JavaScript and TypeScript.\nDevelop reusable React components, hooks, services, state-management solutions, and frontend modules.\nDesign and integrate backend services using C#, .NET, ASP.NET Core, and Web API.\nDevelop and maintain robust RESTful APIs and application integrations.\nWork with MS SQL Server to design data-driven solutions, write efficient queries, and optimise database performance.\nTranslate functional and technical requirements into scalable, maintainable software solutions.\nParticipate in application architecture and technical design discussions.\nApply clean coding practices, object-oriented programming principles, design patterns, and SOLID principles.\nDevelop comprehensive unit and integration tests across frontend and backend components.\nPerform code reviews and ensure adherence to engineering, security, and quality standards.\nTroubleshoot complex application issues and conduct root-cause analysis.\nOptimise application performance, scalability, responsiveness, and reliability.\nCollaborate with Product Managers, UI/UX teams, QA engineers, DevOps, architects, and other stakeholders.\nSupport application deployment, production releases, monitoring, and issue resolution.\nIdentify opportunities for refactoring, automation, technical debt reduction, and engineering process improvements.\nContribute to technical documentation, coding standards, development guidelines, and knowledge-sharing initiatives.\nMentor junior and mid-level developers and provide technical guidance when required.\nWhat Makes You a Great Fit\n8+ years of professional software development experience with strong hands-on expertise in full-stack web application development.\nStrong proficiency in React.js and modern frontend development.\nAdvanced knowledge of JavaScript and TypeScript, including modern ES6+ concepts.\nStrong backend development experience using C# and .NET.\nHands-on experience with ASP.NET Core and Web API for building scalable backend services.\nStrong experience designing and consuming REST APIs and integrating frontend and backend systems.\nSolid experience working with MS SQL Server, including SQL queries, database design, optimisation, and troubleshooting.\nStrong understanding of software architecture, object-oriented programming, design patterns, SOLID principles, and clean code.\nProven experience implementing unit testing and integration testing across application components.\nStrong debugging, performance optimisation, problem-solving, and root-cause analysis skills.\nExperience with Git and modern software development and CI/CD workflows.\nGood understanding of application security, scalability, reliability, and production support practices.\nExperience working in Agile/Scrum development environments.\nStrong communication and collaboration skills with technical and non-technical stakeholders.\nAbility to independently own complex technical deliverables while contributing effectively to a collaborative engineering team.\nBachelor's degree in Computer Science, Information Technology, Engineering, or a related discipline is 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