{"id":3688643,"url":"https://alion.io/job/abnormal-ai-senior-software-engineer-full-stack-portal-platform","title":"Senior Software Engineer - Full Stack - Portal Platform","company":{"id":20628,"name":"Abnormal AI","domain":"abnormal.ai","url":"https://alion.io/company/abnormal-ai","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":76,"open_postings":19,"ghost_share":0,"stale_share":0.947,"repost_share":0,"time_to_fill_p50_days":31,"computed_at":"2026-11-03T05:54:40Z"}},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":null,"work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"posting_text","remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["United Kingdom"],"countries":["GB"],"hiring_countries":["GB"],"hiring_countries_total":1,"salary":null,"salary_estimate":null,"experience_years_min":6,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AWS","optional":false},{"name":"CI/CD","optional":false},{"name":"Django","optional":false},{"name":"Kubernetes","optional":false},{"name":"Python","optional":false},{"name":"React.js","optional":false},{"name":"TypeScript","optional":false},{"name":"JavaScript","optional":true},{"name":"OWASP Top 10","optional":true},{"name":"PostgreSQL","optional":true}],"status":"live","first_seen_at":"2026-11-03T14:40:22Z","employer_posted_date":"2026-11-03","last_verified_at":"2026-11-03T15:49:57Z","board_verified":true,"closed_at":null,"days_open":0,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":0},"description":"About the Role\nAbnormal AI is looking for a Software Engineer to join the Portal Platform team. \nOur team’s mission is to uplevel the architecture across our different portals here at Abnormal: \nCustomer Portal - a gateway our customers use to interact with Abnormal\nEnd User portal - functionality for the users inside the companies that have purchased our product \nDemo portal - a tool to help showcase different combinations of our product by GTM teams\nMain themes include helping reach and maintain enterprise grade stability, security & usability for our customers while enabling application teams to easily develop & deploy their frontend components utilising AI-driven workflows.\nThis role offers an exciting opportunity to join an AI-native company. You will own truly impactful, platform-level work, driving cross-functional influence that spans across product development and enabling our go-to-market teams.\nYou'll join a team of experienced engineers, collaborating with them to design components & drive execution. The ideal candidate is comfortable working with a distributed team & has worked in a full-stack capacity before in enterprise environments.\nWhat you will do \nDesign and execute platform-level software projects from conception through launch, collaborating with senior engineers across the organization.\nBuild and maintain backend services and APIs that power our portal experiences\nBuild reusable frontend libraries, design systems, and developer tooling that accelerate feature delivery across product teams\nOwn infrastructure concerns, including CI/CD pipelines, deployment automation, and observability for portal applications.\nDrive frontend performance, accessibility, and quality standards across our portal applications.\nRaise the bar of excellence in engineering, actively contributing to knowledge sharing within the team, and participating in professional development activities.\nProvide guidance and mentorship for junior members of the team\nHelp accelerate the teams with their changes across different realms of front-end development \nMust Haves \n6+ years of experience as a software engineer, with a track record of owning and delivering complex, cross-team projects end-to-end\nDeep expertise in React and modern frontend architecture (state management, performance tuning, build tooling, design systems)\nStrong backend proficiency in Python (Django) or TypeScript, with experience designing APIs and data models for scale\nExperience with cloud infrastructure (AWS, Kubernetes, CI/CD) and comfort operating production systems\nDemonstrated ability to influence technical direction - you've driven RFCs, architecture decisions, or platform migrations\nExperience mentoring engineers and raising the technical bar through code reviews, documentation, and knowledge sharing\nStrong communication skills, especially in distributed/async environments - you write clearly and proactively\nProven ability to balance technical debt with feature delivery at the platform level\nYou’re growth driven looking to increase impact and responsibility over time\nStrong fundamentals in computer science, data structures, and performance optimization.\nBS degree in Computer Science, Applied Sciences, Information Systems or other related engineering field\nNice to Have \nFamiliarity with our stack (AWS, K8, Python/Django, React, Postgres)\nExperience and eagerness to leverage AI development tools\nExperience with large scale web frontend applications\nExperience with front end build tools\nExperience with micro-frontend architecture patterns\nExperience with web security (eg. OWASP top 10)\nA note on AI in our process: \n Abnormal AI uses AI-assisted tools to help our recruiting team prepare for candidate interviews. These tools analyze resume content and role requirements to suggest interview questions and areas for the interviewer to explore.They do not make hiring decisions or screen candidates automatically. Every decision about a candidacy is made by a person. Further, if your application is successful and Abnormal AI makes a conditional offer of employment, we will carry out pre-employment checks which must be successfully completed to progress to a final offer. All processes and pre-employment checks are in line with prevailing legislation and Abnormal AI's policies relevant to our security and privacy standards.\nAbnormal AI is an equal opportunity employer. Qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, disability, protected veteran status or other characteristics protected by law. For our EEO policy statement please click here. If you would like more information on your EEO rights under the law, please click here.","description_format":"text","description_chars":4739,"description_truncated":false,"requirements":{"experience_years_min":6,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":false,"languages":[]},"benefits":["Professional development"],"hiring_locations":[{"name":"United Kingdom","iso":"GB","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Fraud Detection","Identity Management","Information Security","Cybersecurity AI"],"lifecycle":[{"event":"open","at":"2026-11-03T15:49:57Z"}],"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":"2026-11-03T08:26:00+00:00","sources":["UK Home Office: register of licensed sponsors (workers)"],"filings_for_role_12m":0}],"liveness":{"score":86,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.86,"p_room":1,"age_days":0,"expected_fill_days":31,"reasons":["conf:4","win:early"],"computed_at":"2026-11-03T20:18:17Z"},"pay":null,"html_url":"https://alion.io/job/abnormal-ai-senior-software-engineer-full-stack-portal-platform","json_url":"https://alion.io/job/abnormal-ai-senior-software-engineer-full-stack-portal-platform.json","meta":{"generated_at":"2026-11-03T20:18:17Z","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":2960,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-04T00:00:00Z"}},"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":20628},"rest":"https://alion.io/mcp/rest/get_company?id=20628"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fabnormal-ai-senior-software-engineer-full-stack-portal-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%2Fabnormal-ai-senior-software-engineer-full-stack-portal-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%2Fabnormal-ai-senior-software-engineer-full-stack-portal-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/abnormal-ai-senior-software-engineer-full-stack-portal-platform\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fabnormal-ai-senior-software-engineer-full-stack-portal-platform"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":3688643}},{"tool":"search_jobs","arguments":{"company":"abnormal.ai","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":3688643},"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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