{"id":2864125,"url":"https://alion.io/job/mthree-front-end-developer","title":"Front End Developer","company":{"id":456041,"name":"Mthree","domain":"mthree.com","url":"https://alion.io/company/mthree-2","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Greenhouse","truth_index":{"grade":"B","score":83,"open_postings":16,"ghost_share":0,"stale_share":0.5,"repost_share":0,"time_to_fill_p50_days":68,"computed_at":"2026-11-02T06:13:15Z"}},"role":"Frontend","role_family":"Frontend","seniority":null,"employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["United Kingdom"],"countries":["GB"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":53000,"max_usd":139000,"period":"year","method":"role_country_seniority_unknown","sample_n":29},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agile","optional":false},{"name":"Angular","optional":false},{"name":"CI/CD","optional":false},{"name":"JavaScript","optional":false},{"name":"Jenkins","optional":false},{"name":"Jira","optional":false},{"name":"React.js","optional":false},{"name":"TypeScript","optional":false},{"name":".NET","optional":true},{"name":"C#","optional":true}],"status":"live","first_seen_at":"2026-10-19T17:04:43Z","employer_posted_date":"2026-10-20","last_verified_at":"2026-11-02T16:04:21Z","board_verified":true,"closed_at":null,"days_open":14,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":14},"description":"Front End Developer (Angular & React)\nA leading global investment bank is seeking a Senior Front End Developer (Angular & React) to join a high-impact technology team in London. This role sits within a critical production services organisation and focuses on building a greenfield, end-to-end payments monitoring platform - a capability not currently replicated elsewhere in the industry.\nThis is a hands-on role for a confident engineer who can take full ownership of design, architecture, and delivery, working across complex, business-critical systems in a fast-moving environment.\nThe Opportunity:\nYou’ll design and build modern, high-performance web applications that streamline operational workflows, reduce manual processes, and improve risk visibility across global banking platforms. The work spans new platform development, enhancement of existing services, and integration across a large, distributed financial ecosystem.\nKey responsibilities include:\nDesigning, developing and enhancing enterprise-scale applications\nBuilding modern React and Angular front ends\nDeveloping API integrations and scalable services\nWorking closely with business stakeholders and engineering teams\nDriving technical decisions and architectural improvements\nHelping deliver highly available, performant applications\nContributing to a strategic payments monitoring platform\nRequired Skills:\nStrong commercial experience with React and/or Angular\nExcellent knowledge of JavaScript and TypeScript\nSolid understanding of HTML, CSS and modern UI development\nExperience building and consuming APIs\nStrong appreciation of software architecture and design patterns\nExperience delivering scalable, high-performance applications\nFamiliarity with Agile delivery environments\nExperience with CI/CD and tools such as Jenkins and Jira\nDesirable:\nC# / .NET experience\nExposure to monitoring and observability tools\nExperience within financial services, fintech or other highly regulated environments","description_format":"text","description_chars":1974,"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":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Corporate Training","IT Staffing & Staff Augmentation","IT Training & Certification"],"lifecycle":[{"event":"open","at":"2026-10-19T17:09:58Z"}],"visa":[],"liveness":{"score":63,"band":"ok","label":"Likely open","p_open":1,"p_active":0.632,"p_room":1,"age_days":13,"expected_fill_days":68,"reasons":["conf:2","stale_co","velocity","win:early"],"computed_at":"2026-11-02T06:13:15Z"},"pay":null,"html_url":"https://alion.io/job/mthree-front-end-developer","json_url":"https://alion.io/job/mthree-front-end-developer.json","meta":{"generated_at":"2026-11-02T18:32:25Z","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":25884,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-03T00:00:00Z"}},"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":456041},"rest":"https://alion.io/mcp/rest/get_company?id=456041"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fmthree-front-end-developer"},{"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%2Fmthree-front-end-developer"},{"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%2Fmthree-front-end-developer"},{"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/mthree-front-end-developer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fmthree-front-end-developer"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":2864125}},{"tool":"search_jobs","arguments":{"company":"mthree.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":2864125},"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); https://alion.io/mcp with an Alion account has everything. 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