{"id":962846,"url":"https://alion.io/job/lodgify-senior-frontend-engineer","title":"Senior Frontend Engineer","company":{"id":958,"name":"Lodgify","domain":"lodgify.com","url":"https://alion.io/company/lodgify","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Lever","truth_index":{"grade":"A","score":85,"open_postings":5,"ghost_share":0,"stale_share":0.4,"repost_share":0,"time_to_fill_p50_days":133,"computed_at":"2026-11-12T10:38:37Z"}},"role":"Frontend","role_family":"Frontend","seniority":"senior","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Barcelona, Spain"],"countries":["ES"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":6,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Cypress","optional":false},{"name":"React.js","optional":false},{"name":"TypeScript","optional":false},{"name":"Vitest","optional":false},{"name":"JavaScript","optional":true}],"status":"live","first_seen_at":"2026-09-16T09:17:25Z","employer_posted_date":"2026-09-16","last_verified_at":"2026-11-13T02:42:43Z","board_verified":true,"closed_at":null,"days_open":57,"trust":{"level":"ok","repost_count":0,"flags":[],"days_open":56},"description":"⭐ Role Overview\nAs a Senior Frontend Developer in our Bookings Group, you will shape the high-traffic, real-time interfaces that property managers rely on every single day. Operating horizontally, you will lead the evolution of our frontend estate-moving large-scale applications into a modern, unified repository while raising engineering standards across multiple product squads.\n⭐ How will you make an impact?\nArchitect and refine dense, stateful interfaces, including reservation managers, multi-property calendars, and unified guest messaging.\nCollaborate horizontally across squads to build reusable UI patterns, shared component libraries, and robust data-access layers.\nBring surfaces to life with real-time server-sent events and optimistic updates that keep user data instantly synchronized without refreshes.\nLead high-visibility platform migrations, smoothly consolidating domain packages into a single monorepo while keeping production live and stable.\nElevate developer tooling by centralizing strict TypeScript settings, shared test configurations, and fast, signal-rich CI pipelines.\nEnsure safe, reliable releases through feature flagging, plan-based functional gating, and diligent post-rollout cleanup.\nDrive testing excellence across unit, visual regression, and end-to-end suites while building actionable real-user monitoring.\nMentor mid-level frontend engineers, foster strong code review practices, and write clear technical documentation to empower the entire engineering team.\n⭐ What makes you a great fit?\nYou bring 6+ years of production experience building complex React and TypeScript applications, including at least 2 years in a large, shared codebase with multiple collaborating teams.\nYou have a proven track record of migrating and consolidating large frontend estates incrementally without resorting to high-risk complete rewrites.\nYou possess deep expertise in state management, real-time data flows (e.g., SSE), and performance optimization for complex web applications.\nYou have hands-on experience with automated testing tools (such as Vitest, Cypress, or happy-dom) and visual regression testing.\nYou set high standards for software quality and enjoy establishing shared foundations that elevate the work of surrounding teams.\nYou embrace a continuous improvement mindset, using feedback, analytics, and monitoring to refine user experiences and technical patterns.\nYou excel at boundaryless collaboration, seamlessly partnering across product squads to align on architecture and unblock technical dependencies.\nYou take pride in mentoring peers, sharing technical context, and building a supportive engineering culture.","description_format":"text","description_chars":2661,"description_truncated":false,"requirements":{"experience_years_min":6,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[{"name":"Spain","iso":"ES","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Vacation Rentals","Property Management","Travel 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