{"id":1299734,"url":"https://alion.io/job/weekday-frontend-engineer-2","title":"Frontend 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":84,"ghost_share":0,"stale_share":0.976,"repost_share":0,"time_to_fill_p50_days":5,"computed_at":"2026-09-28T05:45:00Z"}},"role":"Frontend","role_family":"Frontend","seniority":null,"employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"explicit","locations":["Chicago, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":127000,"max_usd":269000,"period":"year","method":"role_country_seniority_unknown","sample_n":365},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"React.js","optional":false},{"name":"Rest API","optional":false},{"name":"TypeScript","optional":false},{"name":"JavaScript","optional":true}],"status":"live","first_seen_at":"2026-09-26T11:01:47Z","employer_posted_date":"2026-09-26","last_verified_at":"2026-09-28T04:34:25Z","board_verified":true,"closed_at":null,"days_open":1,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":1},"description":"'\n: - ( - )\nExperience: 3+ yrs\nLocation: Chicago, Illinois, United States\nJob Type: Full-time\nWe are looking for a highly skilled Senior Frontend Engineer with deep expertise in React and TypeScript to build and evolve complex, data-intensive web applications. This role is suited for an engineer who enjoys solving challenging frontend architecture problems, managing complex application state, and building reliable user experiences for sophisticated business workflows.\nYou will join a small, high-ownership engineering team where frontend engineering plays a critical role in product development. The ideal candidate will have strong technical judgment, a bias toward shipping, and the ability to translate complex user and business requirements into intuitive, maintainable, and high-performance interfaces.\nRequirements\nKey Responsibilities\nDesign, develop, and evolve complex production-grade applications using React and TypeScript.\nBuild data-dense, form-heavy interfaces supporting large numbers of inputs and complex user workflows.\nDesign robust approaches for client-side state management, validation, dependencies, and application logic.\nEstablish and evolve frontend architecture to support scalability, performance, reliability, and maintainability.\nBuild reusable components and frontend patterns that enable consistent and efficient product development.\nOptimise application performance across complex, data-intensive interfaces.\nImplement comprehensive testing strategies covering critical functionality, validation, state behaviour, and user workflows.\nIdentify and resolve complex frontend issues involving application state, dependencies, edge cases, and performance.\nCollaborate closely with backend engineers to define and refine API contracts and integration patterns.\nEnsure frontend behaviour accurately reflects backend business logic and underlying calculation or processing systems.\nWork directly with domain experts and users to translate feedback into product, UX, and engineering improvements.\nBalance rapid product iteration with accuracy, validation, reliability, and auditability.\nParticipate in technical design discussions and make sound frontend architecture decisions.\nContribute to product decisions and help shape solutions in a highly collaborative engineering environment.\nTake ownership of features from requirements and design through implementation, testing, deployment, and iteration.\nContinuously improve frontend development standards, architecture, tooling, and engineering practices.\nWhat Makes You a Great Fit\n3+ years of professional software engineering experience with strong hands-on expertise in frontend development.\nDeep production experience with React and TypeScript.\nStrong understanding of modern frontend architecture, component design, and application development practices.\nProven experience building data-dense and form-heavy interfaces at scale.\nStrong experience handling complex validation, large repeating field sets, interdependent controls, and sophisticated application state.\nExcellent understanding of client-side state management, frontend performance, testing, and maintainability.\nStrong ability to reason about complex systems with extensive dependencies, edge cases, and business rules.\nExperience designing and consuming REST APIs and collaborating effectively with backend engineering teams.\nStrong understanding of frontend performance optimisation and reliable production application development.\nExperience developing maintainable, testable, and reusable frontend architectures.\nStrong product mindset with the ability to translate user feedback into practical technical and UX improvements.\nHigh attention to detail, particularly where accuracy, validation, and consistency are critical.\nStrong ownership mindset and willingness to take responsibility for features and technical decisions end-to-end.\nBias toward shipping, learning from real users, and continuously improving products through iteration.\nComfortable working in a small, fast-moving, high-ownership engineering environment with close collaboration between product and engineering.\nFull-stack or backend development experience is an advantage.\nStrong communication, collaboration, analytical thinking, and problem-solving skills.","description_format":"text","description_chars":4281,"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":[],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":[],"lifecycle":[{"event":"open","at":"2026-09-26T11:01:47Z"}],"liveness":{"score":30,"band":"fade","label":"Fading","p_open":1,"p_active":0.328,"p_room":0.9,"age_days":1,"expected_fill_days":5,"reasons":["conf:1","agency","stale_co","velocity","win:mid","comp:brand"],"computed_at":"2026-09-28T05:45:00Z"},"pay":null,"html_url":"https://alion.io/job/weekday-frontend-engineer-2","json_url":"https://alion.io/job/weekday-frontend-engineer-2.json","meta":{"generated_at":"2026-09-28T06:13:27Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","usage":{"tier":"crawler","counted_by":"address","units_charged":1,"used_today":4338,"day_limit":5000,"remaining_today":662,"minute_limit":60,"resets_at":"2026-09-29T00:00:00Z"}}}