{"id":1505261,"url":"https://alion.io/job/benifex-senior-backend-engineer-net-python","title":"Senior Backend Engineer (.NET & Python)","company":{"id":669145,"name":"Benifex","domain":"benifex.com","url":"https://alion.io/company/benifex","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Teamtailor","truth_index":{"grade":"B","score":80,"open_postings":4,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":16,"computed_at":"2026-10-17T05:46:00Z"}},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"full_time","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"posting_text","remote_working_hours":null,"hiring_geo_confidence":"explicit","locations":["London, United Kingdom"],"countries":["GB"],"hiring_countries":["GB","IE"],"hiring_countries_total":2,"salary":{"min":70000,"max":90000,"currency":"GBP","period":"year","gross":null,"usd_annual":119063},"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":".NET","optional":false},{"name":"C#","optional":false},{"name":"CI/CD","optional":false},{"name":"Model Context Protocol","optional":false},{"name":"Python","optional":false},{"name":"RAG","optional":false},{"name":"SQL","optional":false},{"name":"Apache Kafka","optional":true},{"name":"GCP","optional":true},{"name":"Grafana","optional":true},{"name":"Kubernetes","optional":true},{"name":"Langfuse","optional":true},{"name":"Prometheus","optional":true},{"name":"Redis","optional":true},{"name":"Terraform","optional":true}],"status":"live","first_seen_at":"2026-09-22T09:50:40Z","employer_posted_date":"2026-09-22","last_verified_at":"2026-10-17T23:17:12Z","board_verified":true,"closed_at":null,"days_open":25,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":25},"description":"Who are Benifex? We are a fast-moving technology company, and one of the most successful providers of online reward and benefits solutions in the world. We believe that everyone deserves an exceptional experience at work, every day, and build workplace technology that makes this happen. Benifex’s mission is to build remarkable experiences that employees love. Today Benifex supports more than five million employees in over 3,000 organisations across more than 100 countries. To help us on our quest to be the best, we need brilliant people on board and that’s where you come in.\nWhy should you apply?\nTake a leading role in shaping Brain, Benifex's flagship AI product, and influence how we build AI-powered experiences for our customers.\n\nOwn complex features end-to-end, driving technical decisions and delivering impact at scale.\n\nExpand your expertise across GenAI, cloud technologies and modern backend architecture while helping to evolve our AI-first engineering practices.\n\nGrow your career within a high-performing engineering organisation that invests in technical development, learning and progression.\n\nGreat benefits\n£70,000 - £90,000\nTech setup of your choice (MacBook Pro or equivalent, monitors, etc.)\n£/€800 annual learning budget, plus two hours per week as ‘Focus Fridays’.\nFlexible work - choose a working setup that works for you, our only ask is to see you once a month in the office and you must be based in the UK or Ireland.\nFull access to our comprehensive benefits package, including discounts from hundreds of high street brands, salary sacrifice schemes across Finance, Health, Tech, and more\n25 days holiday plus your local bank holidays\nYour birthday off\nTwo half day wellbeing days\nHealthcare cash plan to cover the costs of day-to-day healthcare\nEmployee Assistance Plan 24/7 365 support\nIncome Protection (75%) and life assurance (4x salary)\nReferral bonuses\nEnhanced parental leave package - 26 weeks fully paid maternity leave and 4 weeks fully paid paternity leave\nWork from Anywhere policy for 90 days\nBuy and Sell scheme for holidays\n£50 monthly allowance to spend on whatever takes your fancy, your very own Benifex card will be topped up at the start of each month!\nRole Overview\nWe are looking for a Software Engineer with strong .NET and Python expertise and hands-on GenAI experience to help build and evolve Brain, Benifex's flagship AI platform. In this role, you will design, develop and deliver high-quality backend solutions that combine modern AI technologies with our established benefits platform. You will work closely with Product, Design and Engineering colleagues in a collaborative, distributed environment while contributing to our AI-first software development lifecycle. This is an opportunity to take ownership of impactful features, strengthen platform reliability and help shape the future of AI-native engineering at Benifex.\nResponsibilities\nDesign, develop and deliver new features for Brain, integrating AI capabilities with Benifex's wider platform.\n\nBuild and maintain high-quality backend services and APIs using .NET and Python technologies.\n\nTake ownership of the code you ship, contributing to testing, troubleshooting and continuous improvement.\n\nCollaborate with Product, Design and Engineering teams to deliver customer-focused solutions.\n\nImprove platform reliability, observability, performance and security.\n\nHelp evolve Benifex's AI-assisted development practices and support other engineers across the team.\n\nWhat are we looking for?\nCommercial experience developing backend applications using C#, .NET/.NET Core, Python and SQL.\n\nProduction GenAI experience, including technologies such as MCP, RAG, agent orchestration, evaluations and observability tooling.\n\nAn understanding of responsible AI, software quality, performance and security best practices.\n\nExperience delivering features end-to-end within modern engineering environments.\n\nExposure to CI/CD pipelines, containerisation and modern architecture patterns such as microservices and event-driven systems.\n\nStrong collaboration skills, a proactive mindset and hands-on experience working with AI coding assistants.\n\nBonus points\nExperience with Kubernetes, GCP, Google Pub/Sub, Kafka or Redis.\n\nFamiliarity with Langfuse, Grafana, Prometheus or Terraform.\n\nExperience mentoring or supporting other engineers.\n\nEven if you don't meet all of the requirements for this role, we encourage you to apply! We are looking for talented and passionate individuals who are eager to learn and grow. \nOur interview process\nInitial interview with the Talent team\nInterview with the hiring manager\nFinal interview with a senior team member/director\nWe are a proud member of the Disability Confident employer scheme.\nIf you require any reasonable adjustments at any stage during the recruitment process, please let us know with your application.","description_format":"text","description_chars":4875,"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":["Apple Macbook","Flexible schedule","Parental leave"],"hiring_locations":[{"name":"United Kingdom","iso":"GB","kind":"country"},{"name":"Ireland","iso":"IE","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Cybersecurity","Professional Services","Human Resources"],"lifecycle":[{"event":"open","at":"2026-09-30T05:23:01Z"}],"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":"2026-10-17T06:21:15+00:00","sources":["UK Home Office: register of licensed sponsors (workers)"],"filings_for_role_12m":0}],"liveness":{"score":34,"band":"fade","label":"Fading","p_open":1,"p_active":0.754,"p_room":0.45,"age_days":24,"expected_fill_days":16,"reasons":["conf:3","urgency","velocity","win:tail"],"computed_at":"2026-10-17T05:46:00Z"},"pay":{"stated_usd_annual":119063,"is_top_pay":false},"html_url":"https://alion.io/job/benifex-senior-backend-engineer-net-python","json_url":"https://alion.io/job/benifex-senior-backend-engineer-net-python.json","meta":{"generated_at":"2026-10-18T01:17:42Z","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":2151,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-19T00:00:00Z"}},"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":669145},"rest":"https://alion.io/mcp/rest/get_company?id=669145"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fbenifex-senior-backend-engineer-net-python"},{"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%2Fbenifex-senior-backend-engineer-net-python"},{"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%2Fbenifex-senior-backend-engineer-net-python"},{"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/benifex-senior-backend-engineer-net-python\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fbenifex-senior-backend-engineer-net-python"}]}