{"id":3333219,"url":"https://alion.io/job/stripe-frontend-engineer-ui-platform","title":"Frontend Engineer, UI Platform","company":{"id":64,"name":"Stripe","domain":"stripe.com","url":"https://alion.io/company/stripe","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Greenhouse","truth_index":{"grade":"B","score":77,"open_postings":129,"ghost_share":0.031,"stale_share":0.589,"repost_share":0.062,"time_to_fill_p50_days":63,"computed_at":"2026-10-31T05:58:55Z"}},"role":"Frontend","role_family":"Frontend","seniority":"junior","employment_type":null,"work_mode":"on_site","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":2,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AI Agents","optional":false}],"status":"live","first_seen_at":"2026-10-27T09:21:13Z","employer_posted_date":"2026-10-27","last_verified_at":"2026-10-31T04:39:47Z","board_verified":true,"closed_at":null,"days_open":3,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":3},"description":"Who we are\nAbout Stripe\nStripe is a financial infrastructure platform for businesses. Millions of companies-from the world’s largest enterprises to the most ambitious startups-use Stripe to accept payments, grow their revenue, and accelerate new business opportunities. Our mission is to increase the GDP of the internet, and we have a staggering amount of work ahead. That means you have an unprecedented opportunity to put the global economy within everyone’s reach while doing the most important work of your career.\nAbout the team\nThe UI Platform team, known as Sail, builds the foundations that support Stripe’s Dashboard and many of Stripe’s other user interfaces. The Sail UI team owns Stripe’s design system, helping Stripe engineers create consistent, accessible, performant, and high-quality experiences at scale.\nWe build and maintain reusable components, design tokens, theming capabilities, documentation, and developer tooling used by engineers and designers across Stripe. We are currently focused on two major projects. First, we are building Sail for Agents: the generation infrastructure, documentation systems, agent integrations, and automated quality checks that help AI coding agents build high-quality Stripe interfaces safely and consistently at scale. Second, we are evolving the visual language of the Dashboard, one of Stripe’s largest UI surfaces, while modernizing its underlying codebase.\nWhat you’ll do\nAs a Frontend Engineer on the Sail UI team, you’ll help build and evolve Stripe’s design system and the tools that enable engineers and AI coding agents to create high-quality user interfaces. You’ll independently drive frontend projects from problem definition through rollout, working closely with designers, product engineers, and other Sail engineers. Your work will range from reusable components, themes, and documentation to agentic tooling, automated quality checks, and modernizing the foundations of Stripe’s Dashboard.\nResponsibilities\nTake end-to-end ownership of software projects, independently scoping problems and carrying solutions through design, implementation, testing, and rollout\nBuild and maintain accessible, performant, and well-tested components, themes, and frontend APIs used across Stripe\nBuild tooling, documentation, and automated quality checks that help engineers and AI coding agents use Sail effectively and meet Stripe’s UI quality bar\nPartner with product designers and engineers to understand their needs and turn recurring UI patterns into reusable design-system capabilities\nHelp evolve the visual language of Stripe’s Dashboard while modernizing its underlying codebase and migrating legacy UI patterns\nImprove the accessibility, internationalization, observability, performance, reliability, and developer experience of the design system\nContribute thoughtful code reviews, technical discussions, and documentation that improve the quality of the team’s work\nWho you are\nWe’re looking for someone who meets the minimum requirements to be considered for the role. 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The preferred qualifications are a bonus, not a requirement.\nMinimum requirements\nFluency in using AI-assisted and agentic development tools as part of day-to-day software engineering, including critically reviewing, validating, and improving generated code\n2+ years of professional frontend engineering experience, or equivalent practical experience, building, shipping, and debugging web applications\nStrong knowledge of modern frontend technologies and frameworks, including browser fundamentals, responsive design, and accessibility\nAbility to independently scope and deliver open-ended frontend projects, making practical technical and product tradeoffs with limited oversight\nStrong problem-solving and debugging skills, with attention to testing, maintainability, and the quality of the resulting user experience\nStrong written and verbal communication skills and the ability to collaborate effectively with designers, product engineers, and other partners\nPreferred qualifications\nExperience working on a design system, frontend platform, or shared component library\nExperience with developer tooling such as build tools, package managers, codemods, lint rules, or large monorepos\nExperience building tools, integrations, or automated evaluation and quality systems for AI coding agents\nExperience using documentation, developer feedback, or adoption data to improve a developer-facing product","description_format":"text","description_chars":4501,"description_truncated":false,"requirements":{"experience_years_min":2,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Payment Processing & Gateways"],"lifecycle":[{"event":"open","at":"2026-10-27T12:40:19Z"}],"visa":[],"liveness":{"score":63,"band":"ok","label":"Likely open","p_open":1,"p_active":0.632,"p_room":1,"age_days":3,"expected_fill_days":63,"reasons":["conf:1","stale_co","velocity","win:early","comp:junior,brand"],"computed_at":"2026-10-31T05:58:55Z"},"pay":null,"html_url":"https://alion.io/job/stripe-frontend-engineer-ui-platform","json_url":"https://alion.io/job/stripe-frontend-engineer-ui-platform.json","meta":{"generated_at":"2026-10-31T07:07:25Z","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":10481,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-01T00:00:00Z"}},"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":64},"rest":"https://alion.io/mcp/rest/get_company?id=64"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fstripe-frontend-engineer-ui-platform"},{"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%2Fstripe-frontend-engineer-ui-platform"},{"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%2Fstripe-frontend-engineer-ui-platform"},{"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/stripe-frontend-engineer-ui-platform\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fstripe-frontend-engineer-ui-platform"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":3333219}},{"tool":"search_jobs","arguments":{"company":"stripe.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":3333219},"note":"people open to offers who fit this vacancy"}],"note":"The same data through MCP tools: https://alion.io/mcp/open needs no sign-in (compact searches, postings, people); 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