{"id":2148866,"url":"https://alion.io/job/cognizant-senior-react-js-developer-onsite","title":"Senior React JS Developer - Onsite","company":{"id":85,"name":"Cognizant","domain":"cognizant.com","url":"https://alion.io/company/cognizant","size_band":"5000+","is_staffing_agency":false,"employer_type":"services","is_intermediary":false,"listed_via":null,"ats_vendor":"Cognizant Careers","truth_index":null},"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":"structured","locations":["Washington, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":null,"max":110000,"currency":"USD","period":"year","gross":null,"usd_annual":110000},"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":true,"relocation_package":false,"has_equity":true,"technologies":[{"name":"JavaScript","optional":false},{"name":"React.js","optional":false},{"name":"Rest API","optional":false},{"name":"CI/CD","optional":true}],"status":"live","first_seen_at":"2026-09-23T10:25:14Z","employer_posted_date":"2026-10-09","last_verified_at":"2026-10-10T00:42:02Z","board_verified":true,"closed_at":null,"days_open":16,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":16},"description":"*Please note, this role is not able to offer visa transfer or sponsorship now or in the future*\nAbout Us:\nCognizant is one of the world's leading professional services companies, transforming clients' business, operating, and technology models for the digital era. Our unique industry-based, consultative approach helps clients envision, build, and run more innovative and efficient businesses. Headquartered in the U.S., Cognizant, a member of the NASDAQ-100, is ranked 195 on the Fortune 500 and is consistently listed among the most admired companies in the world. Learn how Cognizant helps clients lead with digital at www.cognizant.com.\nAbout Cognizant’s IoT Practice:\nIntelligent, IoT-enabled products will soon result in the proliferation of data and disrupt virtually all industries. To be successful, both large and small companies must leverage IoT capabilities by designing modern products that fundamentally connect people with processes. Within Cognizant IOT, we engineer industry-aligned, IoT-enabled products that merge industry needs with human drivers. Our intelligent products will revolutionize experiences and result in exciting, transformative outcomes. Without human-centered thinking, connected products are just standalone things-but with it, our modern connected products facilitate a unified way of life enjoyed by all.\nRole Summary\nWe are looking for an experienced Senior React JS Developer / Front-End Lead to lead the end-to-end design and development of complex React applications supporting investment products and operational workflows for global banking clients.\nThe role requires strong hands-on expertise in React JS, JavaScript, front-end architecture, performance optimization, API integration, testing, and secure development practices. Experience within Investment Banking, Brokerage, Trading, or Settlement operations is highly preferred.\nKey Responsibilities\nLead end-to-end design and development of complex React JS applications supporting investment products and banking operational workflows.\nDevelop highly responsive, scalable, and accessible user interfaces using JavaScript, React JS, HTML, and CSS.\nOptimize application performance by identifying bottlenecks, improving React component structures, and refining state-management approaches.\nWork closely with Product Owners, Business Analysts, and Investment Banking Operations teams to translate business requirements into technical designs and implementation plans.\nProvide technical guidance to developers on JavaScript coding standards, React architectural patterns, reusable components, and secure development practices.\nIntegrate front-end applications with backend services and APIs by defining data contracts, managing error scenarios, and ensuring reliable communication.\nConduct code reviews and maintain strong unit-testing coverage to minimize regressions and improve long-term maintainability.\nCollaborate with Quality Engineering teams to build testable components, support automated user journeys, and resolve issues identified during system and user acceptance testing.\nPromote continuous improvement through reusable components, streamlined development workflows, and adoption of modern React and JavaScript tooling.\nSupport production applications by analyzing incidents, performing root-cause analysis, implementing fixes, and improving application monitoring.\nEngage with business and technical stakeholders to present technical options, explain trade-offs, and align solutions with organizational objectives.\nCreate and maintain technical documentation including solution designs, component libraries, configurations, and onboarding documentation.\nParticipate in sprint planning, estimation, and technical risk assessment to develop realistic implementation plans and timelines.\nMentor and guide peers on robust front-end development practices without requiring formal people-management responsibilities.\nRequired Qualifications\nExtensive hands-on experience with JavaScript and React JS in enterprise-scale applications.\nStrong knowledge of:React component-based architecture\nState-management concepts and frameworks\nJavaScript / modern ES standards\nHTML and CSS\nAsynchronous programming\nREST APIs and backend-service integration\n\nStrong understanding of front-end performance optimization and troubleshooting.\nExperience with version control systems, build tools, package managers, and modern front-end development tooling.\nExperience implementing unit testing and code-quality practices for front-end applications.\nStrong understanding of secure coding, data protection, and development practices appropriate for financial-services applications.\nAbility to investigate complex technical problems, identify root causes, and communicate clear resolution steps.\nStrong communication skills with the ability to work closely with technical and business stakeholders.\nDomain Experience\nPractical exposure to one or more of the following is highly preferred:\nInvestment Banking\nBrokerage\nTrading applications\nInvestment products\nTrade processing\nSettlement workflows\nBanking operational platforms\nPreferred Qualifications\nExperience with front-end automated testing frameworks.\nExperience with performance monitoring and observability tools.\nExperience working with CI/CD pipelines.\nExperience developing applications supporting high-volume financial transactions or operational workflows.\nExperience mentoring developers and establishing React development standards.\nExperience working in a hybrid, global banking environment.\nCompensation: - $ 900,000 to $110,000 + COLA + Performance Bonus + Full benefits. Application will be accepted by 10/25/2026\nBenefits: Cognizant offers the following benefits for this position, subject to applicable eligibility requirements:\nMedical/Dental/Vision/Life Insurance\nPaid holidays plus Paid Time Off\n401(k) plan and contributions\nLong-term/Short-term Disability\nPaid Parental Leave\nEmployee Stock Purchase Plan","description_format":"text","description_chars":5967,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":["Life insurance","Parental leave"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Science & Engineering","IT Outsourcing & Dedicated Teams","Engineering Services","Cloud Consulting & Migration"],"lifecycle":[{"event":"open","at":"2026-10-09T05:00:47Z"}],"visa":[],"liveness":{"score":19,"band":"cold","label":"Long shot","p_open":1,"p_active":0.557,"p_room":0.35,"age_days":15,"expected_fill_days":7,"reasons":["conf:1","win:tail","comp:brand"],"computed_at":"2026-10-09T06:01:00Z"},"pay":{"stated_usd_annual":110000,"is_top_pay":false},"html_url":"https://alion.io/job/cognizant-senior-react-js-developer-onsite","json_url":"https://alion.io/job/cognizant-senior-react-js-developer-onsite.json","meta":{"generated_at":"2026-10-10T02:31:18Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler","counted_by":"address","units_charged":1,"used_today":4713,"day_limit":5000,"remaining_today":287,"minute_limit":60,"resets_at":"2026-10-11T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":85},"rest":"https://alion.io/mcp/rest/get_company?id=85"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fcognizant-senior-react-js-developer-onsite"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Fcognizant-senior-react-js-developer-onsite"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Fcognizant-senior-react-js-developer-onsite"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/cognizant-senior-react-js-developer-onsite\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fcognizant-senior-react-js-developer-onsite"}]}