{"id":3614631,"url":"https://alion.io/job/weekday-senior-full-stack-engineer-3","title":"Senior Full Stack Engineer","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":92,"ghost_share":0,"stale_share":0.978,"repost_share":0,"time_to_fill_p50_days":6,"computed_at":"2026-11-02T06:13:15Z"}},"role":"Backend","role_family":"Backend","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":["Mumbai, 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":"AWS","optional":false},{"name":"Azure","optional":false},{"name":"CI/CD","optional":false},{"name":"Docker","optional":false},{"name":"GCP","optional":false},{"name":"GraphQL","optional":false},{"name":"Kubernetes","optional":false},{"name":"Node JS","optional":false},{"name":"Redux","optional":false},{"name":"Rest API","optional":false},{"name":"SQL","optional":false},{"name":"TypeScript","optional":false},{"name":"JavaScript","optional":true}],"status":"live","first_seen_at":"2026-11-02T15:53:35Z","employer_posted_date":"2026-11-02","last_verified_at":"2026-11-03T01:18:19Z","board_verified":true,"closed_at":null,"days_open":0,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":0},"description":"'\n: - ( - )\nExperience: 12+ yrs\nLocation: Mumbai, Maharashtra, India\nAs a Senior Full Stack Engineer, you will lead the design, implementation, and scaling of multi-tenant SaaS products that serve a diverse customer base, ensuring high availability and seamless user experiences. You will work closely with product managers, designers, and data scientists to translate complex requirements into production-ready code, while maintaining a clean, maintainable architecture that supports rapid feature iteration. Your deep knowledge of React and NodeJS will be vital in creating responsive front-ends and robust back-ends, with a focus on performance, security, and test coverage. You will mentor junior developers, conduct code reviews, and champion best practices across the engineering team, ultimately driving the technical vision that aligns with business goals.\nRequirements\nArchitect and develop scalable SaaS applications using React and NodeJS\nImplement RESTful and GraphQL APIs that serve enterprise-grade clients\nOptimize application performance, memory usage, and load times\nIntegrate third-party services (payment gateways, analytics, CI/CD pipelines)\nWrite automated unit, integration, and end-to-end tests with continuous integration\nParticipate in code reviews, provide constructive feedback, and enforce coding standards\nCollaborate across cross-functional teams to define product roadmap and feature priorities\nTroubleshoot production incidents, analyze root causes, and implement long-term fixes\nDocument technical decisions, architecture diagrams, and best-practice guidelines\nStay current with emerging technologies and industry trends to recommend innovative solutions\n12+ years of hands-on experience in full stack development for SaaS platforms\nProven track record of delivering high-revenue products from concept to production\nExpert proficiency in React, Redux, TypeScript, and NodeJS/Express ecosystems\nStrong understanding of cloud infrastructure (AWS, Azure, GCP) and microservices architecture\nExperience with containerization (Docker) and orchestration (Kubernetes)\nFamiliarity with CI/CD pipelines, automated testing, and monitoring tools\nAbility to mentor junior engineers and foster a culture of continuous improvement\nExcellent communication skills, both technical and non-technical, across teams\nDeep knowledge of performance optimization, indexing, and data modeling for SQL/NoSQL databases\nPassion for learning new technologies and improving development 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