{"id":2505305,"url":"https://alion.io/job/abnormal-software-engineer-backend-behavioral-security-products","title":"Software Engineer - Backend - Behavioral Security Products","company":{"id":20628,"name":"Abnormal AI","domain":"abnormal.ai","url":"https://alion.io/company/abnormal-ai","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Greenhouse","truth_index":null},"role":"Backend","role_family":"Backend","seniority":"middle","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":{"min_usd":74000,"max_usd":163000,"period":"year","method":"role_seniority_country_cell","sample_n":29},"experience_years_min":3,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agentic Workflows","optional":false},{"name":"AI Agents","optional":false},{"name":"Apache Kafka","optional":false},{"name":"Function Calling","optional":false},{"name":"gRPC","optional":false},{"name":"LLM","optional":false},{"name":"LLM Guardrails","optional":false},{"name":"Python","optional":false},{"name":"Redis","optional":false},{"name":"Amazon S3","optional":true},{"name":"Anthropic","optional":true},{"name":"AWS","optional":true},{"name":"Docker","optional":true},{"name":"Helm","optional":true},{"name":"Kubernetes","optional":true},{"name":"LangChain","optional":true},{"name":"LangGraph","optional":true},{"name":"OpenAI","optional":true},{"name":"Prompt Engineering","optional":true}],"status":"live","first_seen_at":"2026-09-16T00:28:42Z","employer_posted_date":"2026-09-16","last_verified_at":"2026-10-14T15:05:08Z","board_verified":true,"closed_at":null,"days_open":28,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":28},"description":"At Abnormal AI, we protect our customers against nefarious adversaries who are constantly evolving their techniques and tactics to outwit and undermine the traditional approaches to Security.\nAbnormal is recognized as a top cybersecurity startup (Leader in the 2025 Gartner Magic Quadrant for Email Security Platforms), securing a Series D funding of $250 million at a $5.1 billion valuation in August 2024.\nAbout The Team\nThis team owns the end-to-end development and operation of the infrastructure, ML models, AI agents, customer-facing APIs, and internal tools that power Abnormal's Identity Threat Protection (ITP) product. Our work is central to detecting malicious behavior and protecting customers from advanced identity-based attacks - including account takeover, identity spoofing, data leakage, and other high-impact threats.\nAbout The Role\nWe are looking for a Software Engineer to help build and evolve our platform as it scales to meet expanding product requirements. This role blends hands-on backend systems development with growing ownership of features and production systems, including AI-powered and agentic components, working closely with senior engineers to improve system reliability, reduce latency, and accelerate feature release cycles.\nWhat You'll Do\nTechnical Delivery & Excellence\nDesign, build, and iterate on scalable backend and ML systems, APIs, frameworks, and internal tools.\nTake ownership of well-scoped features and components, with guidance from senior engineers on more complex, cross-system work.\nContribute to the stability, reliability, and operational excellence of critical systems.\nWrite clean, testable, and resilient code with attention to edge cases and performance.\nContribute to technical design documents and participate in design discussions.\nParticipate in code and design reviews, and contribute to on-call rotations.\nAI Engineering & Agents\nHelp design and build LLM-powered features and agentic workflows (e.g., automated investigation, triage, or remediation assistants) as part of the ATO platform.\nIntegrate LLM APIs and agent frameworks into backend services, with attention to reliability, cost, latency, and evaluation.\nContribute to prompt design, tool/function-calling integrations, and guardrails for AI-driven components under senior engineer guidance.\nUse GenAI coding assistants and agents as part of your own development workflow to accelerate delivery and testing.\nCollaboration & Growth\nCollaborate with product managers, designers, and engineers to align on specifications and priorities.\nBreak down well-defined projects into clear executable steps and drive them to completion.\nContribute to roadmap discussions and share ideas for technical improvements.\nCommunicate effectively in an async-first environment, providing clarity on updates, challenges, and solutions.\nActively seek feedback and mentorship from senior engineers to accelerate your growth.\nWhat We're Looking For\nOwnership & Growth: A proactive engineer who takes ownership of assigned work and is eager to grow into increasingly complex projects.\nAttention to Detail: Strong focus on code quality, reliability, monitoring, and performance.\nSolid Fundamentals: Good grounding in system design principles, with a growing ability to reason about scaling and reliability tradeoffs.\nStrong Collaborator: Comfortable working cross-functionally and in a distributed environment.\n AI & Agent Engineering Curiosity: Genuine interest in LLM-powered features and agentic systems, and proactive in leveraging modern developer productivity tools, including GenAI assistants and coding agents, to accelerate delivery.\nMust-Have Skills\n3-5 years of industry experience as a Software Engineer, with a track record of shipping production backend systems.\nSolid backend proficiency in Python, with experience building and maintaining production systems.\nExperience with system design fundamentals and building reliable, scalable applications.\nWorking knowledge of relational databases and modern data storage technologies.\nExposure to service-to-service communication (gRPC, Kafka) and caching (Redis) is a plus.\nExperience with AWS cloud services (S3, RDS) and deployment practices.\nFamiliarity with containerization and orchestration (Docker, Kubernetes, Helm) is a plus.\nUnderstanding of service health, monitoring, and incident response practices.\nComfortable writing technical documentation and contributing to design discussions.\nNice-to-Have Skills\nHands-on experience integrating LLM APIs (e.g., OpenAI, Anthropic) into production applications.\nExposure to agent frameworks or patterns (e.g., LangChain, LangGraph, tool/function calling, ReAct-style agents).\nFamiliarity with prompt engineering, evaluation, and observability for AI-driven features.\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":5912,"description_truncated":false,"requirements":{"experience_years_min":3,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[{"name":"United Kingdom","iso":"GB","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Cybersecurity","Fraud Detection","Information Security","Cybersecurity AI"],"lifecycle":[{"event":"open","at":"2026-10-14T07:12:31Z"}],"visa":[],"liveness":{"score":41,"band":"fade","label":"Fading","p_open":1,"p_active":0.74,"p_room":0.55,"age_days":28,"expected_fill_days":27,"reasons":["conf:2","win:tail"],"computed_at":"2026-10-14T17:39:00Z"},"pay":null,"html_url":"https://alion.io/job/abnormal-software-engineer-backend-behavioral-security-products","json_url":"https://alion.io/job/abnormal-software-engineer-backend-behavioral-security-products.json","meta":{"generated_at":"2026-10-14T17:39:00Z","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":22573,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-15T00:00:00Z"}},"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-software-engineer-backend-behavioral-security-products"},{"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-software-engineer-backend-behavioral-security-products"},{"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-software-engineer-backend-behavioral-security-products"},{"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-software-engineer-backend-behavioral-security-products\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fabnormal-software-engineer-backend-behavioral-security-products"}]}