{"id":142060,"url":"https://alion.io/job/flo-health-frontend-engineer","title":"Frontend Engineer","company":{"id":51646,"name":"Flo Health","domain":"flo.health","url":"https://alion.io/company/flo-health","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Greenhouse","truth_index":{"grade":"A","score":91,"open_postings":14,"ghost_share":0,"stale_share":0.357,"repost_share":0,"time_to_fill_p50_days":54,"computed_at":"2026-10-17T05:46:00Z"}},"role":"Frontend","role_family":"Frontend","seniority":"senior","employment_type":null,"work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Vilnius, Lithuania"],"countries":["LT"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":5900,"max":8300,"currency":"EUR","period":"month","gross":null,"usd_annual":111336},"salary_estimate":null,"experience_years_min":7,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"JavaScript","optional":false},{"name":"Jest","optional":false},{"name":"Next.js","optional":false},{"name":"Playwright","optional":false},{"name":"React.js","optional":false},{"name":"TypeScript","optional":false},{"name":"A/B Testing","optional":true}],"status":"live","first_seen_at":"2026-06-22T11:48:29Z","employer_posted_date":"2026-06-26","last_verified_at":"2026-10-17T23:07:14Z","board_verified":true,"closed_at":null,"days_open":117,"trust":{"level":"ok","repost_count":0,"flags":[],"days_open":116},"description":"500M+ downloads. 80M+ monthly users. A decade of building - and we’re still accelerating.\nFlo is the world’s #1 health & fitness app worldwide on a mission to build a better future for female health. Backed by a $200M investment led by General Atlantic, we became the first product of our kind to reach a $1B valuation in 2024 - and we’re not slowing down.\nWith 7M paid subscribers and the highest-rated experience in the App Store’s health category, we’ve spent 10 years earning trust at scale. Now, we’re building the next generation of digital health - AI-powered, privacy-first, clinically backed - to help our users know their body better.\nThe job\nWe’re looking for a Senior Frontend Engineer to help us build the next generation of Flo’s platform and user experiences.\nYou’ll work on the foundation that powers interactive surveys and dynamic content inside the Flo app - building SDKs, reusable components, and internal tooling that enable other product teams to deliver exceptional experiences quickly and reliably.\nOur frontend stack is based on React, TypeScript, and Next.js, with a strong focus on performance, maintainability, and testing.\nWe care deeply about quality: we use TypeScript for type safety, Jest and Playwright for automated testing, and continuously evolve our design system and UI Kit.\nWhat you'll be doing:\nDesign, build, and maintain high-quality user-facing components and platform SDKs that enable survey and interactive experiences in the Flo ecosystem.\nCollaborate with product, design, and backend engineers to deliver flexible and scalable solutions.\nContribute to Flo’s design system and shared UI libraries, ensuring consistency and reusability across products.\nRefactor and improve existing codebases for performance, reliability, and maintainability.\nWrite clean, modular, well-documented code and advocate for engineering best practices.\nActively participate in the frontend community at Flo, sharing ideas and driving improvements in architecture and development processes.\nYour Experience\nMust have:\n7+ years of experience building, shipping, and maintaining modern web applications.\nExpert-level knowledge of HTML, CSS, and JavaScript (ES6+).\nDeep experience with React and modern frontend tooling.\nSolid grasp of object-oriented design patterns and the ability to write efficient, well-structured algorithms\nYou must use AI coding agents as your default way of working - writing code manually is the exception, not the rule.\nProven ability to create adaptive, responsive, and accessible user interfaces.\nA product mindset and strong collaboration skills - you care about how your work impacts the user.\nNice to have:\nFamiliarity with Next.js, Contentful, or similar frameworks and CMS solutions.\nExperience with A/B testing and experimentation frameworks.\nUnderstanding of analytics and BI integrations.\nSalary Range - gross per month (ranges may vary based on skills and experience)\n€5.900—€8.300 EUR\nHow we work\nWe’re a mission-led, product-driven team. We move fast, stay focused and take ownership - from brief to build to impact. Debate is encouraged. Decisions are shared. We care about craft, ship with purpose, and always raise the bar.\nYou’ll be working with people who take their work seriously, not themselves. It takes commitment, resilience, and the drive to keep going when things get tough. Because better health outcomes are worth it. \nWhat you'll get\nWe support impact with meaningful reward. Here’s what that looks like:\nCompetitive salary and annual reviews\nOpportunity to participate in Flo’s performance incentive scheme\nPaid holiday, sick leave, and female health leave\nEnhanced parental leave and pay for maternity, paternity, same-sex and adoptive parents\nAccelerated professional growth through world-changing work and learning support\nIn-person collaboration and work in a hybrid model, with 3 days per week spent in the office\n5-week fully paid sabbatical at 5-year Floversary\nFlo Premium for friends & family, plus more health, pension and wellbeing perks\nDiversity, equity and inclusion\nOur strength is in our differences. At Flo, hiring is based on merit, skill and what you bring to the role - nothing else. We’re proud to be an equal opportunity employer, and we welcome applicants from all backgrounds, communities and identities. Read our privacy notice for job applicants.","description_format":"text","description_chars":4353,"description_truncated":false,"requirements":{"experience_years_min":7,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":["Equity","Parental leave"],"hiring_locations":[{"name":"Lithuania","iso":"LT","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Women’s Health & Maternity","Consumer Health Apps"],"lifecycle":[{"event":"open","at":"2026-06-22T11:48:29Z"}],"visa":[],"liveness":{"score":17,"band":"cold","label":"Long shot","p_open":1,"p_active":0.597,"p_room":0.28,"age_days":116,"expected_fill_days":54,"reasons":["conf:1","win:tail","crowd:"],"computed_at":"2026-10-17T05:46:00Z"},"pay":{"stated_usd_annual":111336,"is_top_pay":false},"html_url":"https://alion.io/job/flo-health-frontend-engineer","json_url":"https://alion.io/job/flo-health-frontend-engineer.json","meta":{"generated_at":"2026-10-18T01:53:32Z","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_verified","counted_by":"address","units_charged":1,"used_today":3058,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-19T00:00:00Z"}},"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":51646},"rest":"https://alion.io/mcp/rest/get_company?id=51646"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fflo-health-frontend-engineer"},{"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%2Fflo-health-frontend-engineer"},{"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%2Fflo-health-frontend-engineer"},{"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/flo-health-frontend-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fflo-health-frontend-engineer"}]}