{"id":1913486,"url":"https://alion.io/job/callsign-experience-engineer-ftc","title":"Experience Engineer (FTC)","company":{"id":51577,"name":"Callsign","domain":"callsign.com","url":"https://alion.io/company/callsign","size_band":"201-500","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workable","truth_index":null},"role":"Industrial Engineering","role_family":"Industrial Engineering","seniority":null,"employment_type":"contractor","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["London, United Kingdom"],"countries":["GB"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":43000,"max_usd":93000,"period":"year","method":"role_country_seniority_unknown","sample_n":480},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"CI/CD","optional":false},{"name":"GitLab CI","optional":false},{"name":"GitOps","optional":false},{"name":"JavaScript","optional":false},{"name":"React.js","optional":false},{"name":"Terraform","optional":false},{"name":"TypeScript","optional":false}],"status":"live","first_seen_at":"2026-10-05T15:28:43Z","employer_posted_date":"2026-10-05","last_verified_at":"2026-10-08T00:09:45Z","board_verified":true,"closed_at":null,"days_open":2,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":2},"description":"The Experience team owns the human-facing side of Callsign: the client portal, our demo and client management platform (one platform for the whole client journey, from first demo through proof of concept, onboarding, integration, analysis and ongoing management), the data-product UIs, and the design system and engineering standards behind all of it.\nThis position is offered as a 12 month fixed-term contract with the successful candidate ideally joining in 2026.\nThe candidate will already need to hold the right to work in the UK.\nWhat you’ll do:\nProduct & UX:\nOwn features end-to-end, from ambiguous requirements to shipped experience: fills design gaps with defensible decisions and delivers a coherent flow rather than a set of components\nContribute actively in refinement: challenge requirements with evidence, propose simpler alternatives, and bring product ideas of your own\nKnow the outcome each feature serves, instruments what they ship so that outcome is measurable, and checks whether it landed (usage, feedback, demo performance) rather than stopping at merge\nUnderstand the domain the product lives in (fraud, identity, authentication, and the client's operational world) well enough so that gap-filling decisions reflect\nFrontend craft:\nImplement non-trivial components and async data flows\nDiagnose and fix performance and accessibility issues rather than merely detecting them\nHandle secrets/config surfaces safely\nFull-stack\nShip features that span frontend, backend service and configuration\nDebug across the boundary to root cause \nSignificant changes start as a written design others can review, rather than as code\nQuality\nDesign the test approach for your features (what gets unit, component and e2e coverage, and why)\nKeep regression suites healthy in your area; e2e failures you own get fixed rather than retried\nPlatform:\nLand toolchain and pipeline improvements (build config, CI automation, test infra, dependency upgrades) beyond your immediate feature work.\nRequirements\nKey Responsibilities\nShip across the stack: TypeScript/React frontends, Node services (with some Java in the portal estate), API contracts, GitLab CI/CD, and deployment via Helm, GitOps and Terraform.\nTreat the frontend craft triad - accessibility, performance, security - as engineering, with expectations that rise as you grow.\nBuild with AI as a core part of your workflow, with the verification discipline a regulated product demands.\nLearn the domain deliberately: fraud, identity, authentication, and our clients' operational world, because product decisions made without it are guesses.\nWrite meaningful tests for everything you ship.\nRequired Skills & Experience\nA must:\nSolid JavaScript/TypeScript and React.\nComfort somewhere beyond the frontend: an API, a service, or infrastructure. \nSystem design and architecture, designing features that span frontend, service and configuration. \nEvidence of AI-native working with stated verification.\nA testing instinct: you can design a test approach and defend it.\nWould be great:\nProduct judgement demonstrable from your history: UX decisions made and defended without a design spec.\nOwnership of a surface or programme through its worst weeks, at any scale.\nNice to have:\nJava in production; design systems or component library work; SDK or library engineering; data visualisation\nExperience in regulated industries (fintech, identity, payments).\nBenefits\nPension scheme with Scottish Widows\nPrivate medical cover with Vitality\nLife assurance (4x base salary)\nPersonal Learning & Development Budget\nCycle to Work Scheme\nCompany Family Leave\n25 days annual leave plus Callsign Bank Holiday\nEmployee Volunteering Program","description_format":"text","description_chars":3676,"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":["Annual leave","Parental leave"],"hiring_locations":[{"name":"United Kingdom","iso":"GB","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Fraud Detection","Identity Management"],"lifecycle":[{"event":"open","at":"2026-10-05T15:28:43Z"}],"visa":[{"country":"GB","licensed_sponsor":true,"evidence":"Licensed UK visa sponsor (Skilled Worker)","filings_12m":null,"filings_prev_12m":null,"green_card_filings_12m":null,"median_offered_wage_usd":null,"route":"Skilled Worker","cap_exempt":false,"checked_at":"2026-10-07T06:21:01+00:00","sources":["UK Home Office: register of licensed sponsors (workers)"],"filings_for_role_12m":0}],"liveness":{"score":90,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.903,"p_room":1,"age_days":1,"expected_fill_days":28,"reasons":["conf:0","velocity","win:early"],"computed_at":"2026-10-07T05:47:15Z"},"pay":null,"html_url":"https://alion.io/job/callsign-experience-engineer-ftc","json_url":"https://alion.io/job/callsign-experience-engineer-ftc.json","meta":{"generated_at":"2026-10-08T00:49:29Z","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","counted_by":"address","units_charged":1,"used_today":1341,"day_limit":5000,"remaining_today":3659,"minute_limit":60,"resets_at":"2026-10-09T00:00:00Z"}},"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":51577},"rest":"https://alion.io/mcp/rest/get_company?id=51577"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fcallsign-experience-engineer-ftc"},{"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%2Fcallsign-experience-engineer-ftc"},{"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%2Fcallsign-experience-engineer-ftc"},{"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/callsign-experience-engineer-ftc\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fcallsign-experience-engineer-ftc"}]}