{"id":2575969,"url":"https://alion.io/job/sardine-fullstack-engineer-investigator-tools-3","title":"Fullstack Engineer, Investigator Tools","company":{"id":5952,"name":"Sardine","domain":"sardine.ai","url":"https://alion.io/company/sardine","size_band":"201-500","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":{"grade":"B","score":75,"open_postings":5,"ghost_share":0,"stale_share":0.8,"repost_share":0,"time_to_fill_p50_days":60,"computed_at":"2026-10-15T05:46:00Z"}},"role":"Backend","role_family":"Backend","seniority":null,"employment_type":"full_time","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"board_field","remote_working_hours":null,"hiring_geo_confidence":"structured","locations":[],"countries":[],"hiring_countries":["GB"],"hiring_countries_total":1,"salary":{"min":112000,"max":128000,"currency":"EUR","period":"year","gross":null,"usd_annual":142351},"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AI Agents","optional":true},{"name":"Go","optional":true},{"name":"JavaScript","optional":true},{"name":"Node JS","optional":true},{"name":"React.js","optional":true},{"name":"TypeScript","optional":true}],"status":"live","first_seen_at":"2026-10-14T22:17:38Z","employer_posted_date":"2026-10-14","last_verified_at":"2026-10-15T21:25:30Z","board_verified":true,"closed_at":null,"days_open":0,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":0},"description":"Who we are:\nSardine is the leading agentic risk platform for fighting financial crime. Our integrated solution unifies data across risk teams to help organizations stop fraud in real time, prevent AI-driven attacks, and automate fraud and AML operations. Sardine’s platform is strengthened by one of the fastest-growing fraud consortiums in the market, spanning more than 6 billion profiled devices, 800 million consumers, and 3 million businesses worldwide. Leading companies including FIS, GoDaddy, Intuit, Edward Jones, ZoomInfo, and Checkout.com rely on Sardine to secure and grow trust in their products.\nOur culture:\nWe hire talented, self-motivated individuals with extreme ownership and high growth orientation.\n\nWe value performance and not hours worked. We believe you shouldn't have to miss your family dinner, your kid's school play, friends get-together, or doctor's appointments for the sake of adhering to an arbitrary work schedule.\n\nWe're a remote-first team spread across time zones, so no office to report to - work from wherever helps you do your best work. Just a couple of things to keep in mind: pay is based on where you're located, and you'll need to keep a home base in the country you're hired in. So while we love the \"coffee shop today, mountains tomorrow\" life, this isn't a passport-optional, work-from-anywhere-on-Earth kind of remote - think flexible within your country, not borderless.\n\nLocation:\nRemote - United Kingdom\n\nAbout the role:\nAs a Full Stack Engineer at Sardine, you will bridge the gap between complex technical backend systems and user-friendly interfaces to help us stop fraud in its tracks. This is a dynamic, high-impact role. On average, you will be working 60% on backend development and 40% on frontend development but are willing to help out wherever is needed. You will build out data-intensive applications, including advanced graph systems used to uncover complex fraud rings. You will own features end-to-end at a massive scale, ultimately empowering fraud analysts to uncover and investigate suspicious transactions faster than ever before.\nWhat you’ll be doing:\nOwn features end-to-end: Drive the product lifecycle from determining the initial problem space and user needs, to technical modeling, UX execution, and iterative improvements based on vague requirements.\nTranslate complexity to usability: Build out complex technical systems into intuitive, user-friendly interfaces.\nBuild fraud-fighting tools: Develop and optimize advanced graph systems to visualize fraud rings, and build performant search tools that help analysts rapidly identify suspicious transactions.\nCollaborate cross-functionally: Work tightly with Design, Data, Product, and Account Management teams to align engineering output with business and user needs.\nEnsure system health: Proactively diagnose, triage, and resolve bugs while writing highly efficient and performant code.\nWhat you’ll need:\nCore technical stack: Extensive experience writing efficient, production-ready code in TypeScript, Node.js, React, Go and other server programming languages.\nScale and data expertise: Proven experience working with data-intensive applications, complex workflows, and big data at scale.\nPipeline proficiency: Deep background in technical data modeling and building robust production data pipelines.\nHigh-growth adaptability: The ability to thrive, execute, and deliver consistently in a fast-paced, high-growth startup environment.\nIndependent execution: A proven track record of taking extreme ownership of ambiguous problems and independently turning them into polished, scalable features.\nBenefits we offer:\nGenerous compensation in cash and equity\n\nEarly exercise for all options, including pre-vested\n\nWork from anywhere: Remote-first Culture\n\nFlexible paid time off and Year-end break\n\nHealth insurance, dental, and vision coverage for employees and dependents - US and Canada specific\n\n4% matching in 401k / RRSP - US and Canada specific\n\nMacBook Pro delivered to your door\n\nOne-time stipend to set up a home office - desk, chair, screen, etc.\n\nMonthly meal stipend\n\nMonthly social meet-up stipend\n\nAnnual health and wellness stipend\n\nAnnual Learning stipend\n\nJoin a fast-growing company with world-class professionals from around the world. If you are seeking a meaningful career, you found the right place, and we would love to hear from you.\nTo learn more about how we process your personal information and your rights in regards to your personal information as an applicant and Sardine employee, please visit our Applicant and Worker Privacy Notice.","description_format":"text","description_chars":4593,"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":["401k plan","Apple Macbook","Equity","Health insurance","Home office"],"hiring_locations":[{"name":"United Kingdom","iso":"GB","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Fraud Detection","RegTech, AML & Compliance"],"lifecycle":[{"event":"open","at":"2026-10-15T00:12:06Z"}],"visa":[],"liveness":{"score":99,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.993,"p_room":1,"age_days":0,"expected_fill_days":60,"reasons":["conf:1","wave","velocity","win:early"],"computed_at":"2026-10-15T05:46:00Z"},"pay":{"stated_usd_annual":142351,"is_top_pay":false},"html_url":"https://alion.io/job/sardine-fullstack-engineer-investigator-tools-3","json_url":"https://alion.io/job/sardine-fullstack-engineer-investigator-tools-3.json","meta":{"generated_at":"2026-10-15T21:28:34Z","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":32607,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-16T00:00:00Z"}},"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":5952},"rest":"https://alion.io/mcp/rest/get_company?id=5952"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fsardine-fullstack-engineer-investigator-tools-3"},{"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%2Fsardine-fullstack-engineer-investigator-tools-3"},{"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%2Fsardine-fullstack-engineer-investigator-tools-3"},{"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/sardine-fullstack-engineer-investigator-tools-3\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fsardine-fullstack-engineer-investigator-tools-3"}]}