{"id":3944221,"url":"https://alion.io/job/remotestar-full-stack-engineer-london","title":"Full Stack Engineer (London)","company":{"id":4526839,"name":"RemoteStar","domain":"remotestar.io","url":"https://alion.io/company/remotestar","size_band":"5000+","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Freshteam","truth_index":null},"role":"Backend","role_family":"Backend","seniority":"senior","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":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AI Agents","optional":false},{"name":"CI/CD","optional":false},{"name":"Claude Code","optional":false},{"name":"Confluence","optional":false},{"name":"GitLab","optional":false},{"name":"Java","optional":false},{"name":"Jira","optional":false},{"name":"LLM","optional":false},{"name":"LLM Guardrails","optional":false},{"name":"Model Context Protocol","optional":false},{"name":"React Native","optional":false},{"name":"JavaScript","optional":true},{"name":"React.js","optional":true}],"status":"live","first_seen_at":"2026-11-08T18:10:45Z","employer_posted_date":"2026-11-08","last_verified_at":"2026-11-08T18:10:45Z","board_verified":true,"closed_at":null,"days_open":0,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":0},"description":"At RemoteStar, we're hiring for one of our clients - a FTSE 250 global fintech company in online trading with over 45 years of industry experience.\nJob title\n Senior Full Stack Engineer - (AI enablement) Lifecycle\nKey Skills: Java, React / React Native, TDD, Paired Programming, AI-assisted coding\n\nYour team:\n We’re looking for a Senior Full Stack Engineer to push hard on AI across Lifecycle engineering: AI-assisted coding, testing and deployments, defect triage and observability, and the internal tooling that connects our AI tools safely to Jira, GitLab, and our CI/CD pipeline. This is a hands-on role on our Java backend. You’ll build tooling yourself, and you’ll help set how your team adopts it.\nYour role in the Team’s Success:\n This role suits engineers with a strong grounding in software engineering practice: test-driven development, pair programming, and real ownership of systems from design through to production support, with real depth in Java and the modern backend services ecosystem. The fundamentals matter most: engineers who can write their own tests, review their own designs, and catch their own defects, and who use AI to extend that practice further and faster. Growing into the person the whole group comes to for technical judgement is part of the role.\nWhat you’ll do:\n Build and maintain internal tooling that embeds AI into day-to-day engineering work: coding assistants, AI-assisted test generation, deployments, and defect triage.\nContribute to observability in the AI-assisted pipeline, so every stage shows what the tooling is doing, catching, and missing.\nIdentify manual steps in coding, testing, and release that can run largely unattended, and help build the automation to get there.\nSplit work into small, releasable pieces that ship continuously.\nWork closely with a product person on your product domain, so what you build is grounded in real delivery.\nTreat improving ways of working and driving AI adoption as a fundamental, ongoing part of delivering value.\nWork with the test and PM function to bring AI into the testing pipeline: exploratory test generation, defect clustering, flaky-test detection, and smarter prioritisation of what to test.\nEvaluate and help roll out LLM-based developer tools, for example Claude Code and similar, integrating them safely with our Jira, Confluence, and GitLab environments.\nFollow and help refine standards for responsible AI use in the SDLC: data handling, prompt hygiene, and guardrails around production and customer data.\nMentor less experienced engineers on effective use of AI tooling.\nWork with security and compliance to make sure AI tooling meets our regulatory and data-handling requirements.\nTrack the metrics that show whether AI tooling is helping: cycle time, defect escape rate, test coverage, delivery turnaround. Iterate based on what the data shows.\nWhat you’ll need for this role:\n Extensive background as a Software Engineer, with demonstrated technical judgement on production systems.\nWe'll consider those stronger in front end React / React Native or hands-on expertise in Java or a comparable backend service ecosystem - as long as you have experience in and are happy working across the stack.\nStrong fluency in test-driven development and pair programming as working disciplines.\nReal ownership experience: you’ve designed features or systems, built them, deployed them, and supported them in production.\nA genuine appetite for aggressive automation. You get energised by removing manual steps entirely.\nSome experience evaluating or using LLM-based developer tools in a real engineering environment.\nPreferred\n Experience with MCP, agentic tooling, or Spec Driven Development.\nFamiliarity with the Atlassian ecosystem (Jira, Confluence) and its APIs.\nPrior experience in financial services, trading platforms, or another regulated, high-reliability environment.\nPerks\n Competitive salary\nFlexible Benefits Package on top of your salary (12%)\nPrivate medical cover for you and your family\nLife insurance\nContribution to gym memberships\n25 Days holiday, with 1 additional day off to celebrate your Birthday & 2 additional days off a year for voluntary work (28 in total)\nThe option to buy or sell holiday days\nA comprehensive global and local onboarding process\nEnhanced primary (maternity), secondary (paternity), and shared parental pay and leave, as well as a range of support and benefits for parents","description_format":"text","description_chars":4417,"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":["Gym membership","Life insurance"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":[],"lifecycle":[{"event":"open","at":"2026-11-08T18:10:45Z"}],"visa":[],"liveness":{"score":86,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.86,"p_room":1,"age_days":0,"expected_fill_days":28,"reasons":["conf:0","win:early"],"computed_at":"2026-11-08T19:06:47Z"},"pay":null,"html_url":"https://alion.io/job/remotestar-full-stack-engineer-london","json_url":"https://alion.io/job/remotestar-full-stack-engineer-london.json","meta":{"generated_at":"2026-11-08T19:06:47Z","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":39945,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-09T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.1,"usd":0.01,"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":4526839},"rest":"https://alion.io/mcp/rest/get_company?id=4526839"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fremotestar-full-stack-engineer-london"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":2,"usd":0.2},"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%2Fremotestar-full-stack-engineer-london"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.1,"usd":0.01},"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%2Fremotestar-full-stack-engineer-london"},{"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/remotestar-full-stack-engineer-london\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fremotestar-full-stack-engineer-london"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":3944221}},{"tool":"search_jobs","arguments":{"company":"remotestar.io","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":3944221},"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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