{"id":1314618,"url":"https://alion.io/job/benifex-senior-backend-engineer-net","title":"Senior Backend Engineer (.NET)","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":null},"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":["Southampton, United Kingdom"],"countries":["GB"],"hiring_countries":["GB","IE"],"hiring_countries_total":2,"salary":{"min":75000,"max":90000,"currency":"GBP","period":"year","gross":null,"usd_annual":119222},"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":true,"relocation_package":false,"has_equity":false,"technologies":[{"name":".NET","optional":false},{"name":"C#","optional":false},{"name":"CI/CD","optional":false},{"name":"Java","optional":false},{"name":"Kubernetes","optional":false},{"name":"Spring Boot","optional":false},{"name":"GCP","optional":true},{"name":"Grafana","optional":true},{"name":"Prometheus","optional":true},{"name":"Redis","optional":true},{"name":"SQL","optional":true},{"name":"Terraform","optional":true}],"status":"live","first_seen_at":"2026-09-21T07:47:48Z","employer_posted_date":"2026-09-21","last_verified_at":"2026-09-26T22:26:37Z","board_verified":false,"closed_at":null,"days_open":8,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":8},"description":"Who are Benifex?\nWe 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?\nImpact: AI first by default, we’re building our SDLC around AI Assisted engineering and you’ll be part of shaping this.\n\nTechnology: Gain experience working with cutting-edge technologies and architectural practice on a product used by millions.\n\nTeam: Work with a talented, experience group of engineers dedicated to building high quality product for our users.\n\nSunday Times Best Place to Work 2025 and Best Large Tech Company to Work for 2025\n\nWork for a profitable, fast-growing market leader in the online reward and benefits space\n\nRole Overview\nOur Engineering department is looking for Senior .Net developers to help shape the future of our platform and engineering department! We are going through a key period of growth across the business and have roles within existing teams delivering key functionality, as well as brand new teams set up to achieve our goals as a business.\n**Please note we are unable to offer visa sponsorship and require to people to be based in the UK or Ireland for this position**\nGreat benefits:\n£75,000-90,000\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! \nResponsibilities\nLead the design and development of modern, scalable backend solutions for our Benefits product using C#.NET and .NET Core.\n\nCollaborate closely with Product and Engineering teams to define technical requirements, ensure high-quality delivery, and drive architectural decisions.\n\nModernise existing systems by introducing microservices, containerisation (Kubernetes), and cloud-native practices.\n\nImplement and maintain CI/CD pipelines to ensure seamless deployment and delivery processes.\n\nAdvocate for and implement best practices in coding, architecture, and process, ensuring a high standard of technical excellence.\n\nWork effectively with remote teams to deliver cohesive and robust solutions.\n\nCollaborate with engineers from Java Spring Boot backgrounds to ensure seamless integration and knowledge sharing.\n\nTech stack: .NET, SQL, GCP, MSMQ (moving to Google Pub/Sub), Kubernetes.\nWhat are we looking for?\nExtensive experience in backend development with C#.NET and .NET Core, with a focus on scalable, maintainable solutions.\n\nProven knowledge of Kubernetes and containerisation to support modern infrastructure practices.\n\nExperience with modern architectural patterns, including microservices, CQRS and event-driven systems. Bonus points for experience with circuit breaker, transient fault handling, outbox patterns, dead letter handling\n\nHands-on experience with messaging systems like Pub/Sub, distributed transaction coordination (MSDTC), and caching solutions like Redis.\n\nProven ability to set up and maintain CI/CD pipeline s to streamline development and deployment workflows.\n\nSolid understanding of system performance, optimisation, and debugging.\n\nCollaboration: Ability to work effectively with cross-functional and remote teams, including Java Spring Boot engineers, to deliver cohesive solutions.\n\nProactive Problem-Solving: A resourceful approach to tackling complex challenges and driving projects forward with minimal guidance.\n\nTechnical Excellence: A strong advocate for clean code, best practices, and high-quality software development.\n\nBonus Points for:\nExperience with cloud technologies, particularly in deploying and scaling .NET applications.\n\nFamiliarity with observability tools for monitoring, logging, and alerting (e.g., Grafana, Prometheus).\n\nKnowledge of IaC tools such as Terraform.\n\nPrevious experience modernising legacy systems or transitioning monolithic architectures to microservices.\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. We also offer a variety of other roles, so please check out our careers page to see if there is something else that might be a good fit for you.\nOur interview process\n Benifex understands the need to have a fast and efficient process, the below will all be completed in the shortest time possible.\nInitial informal call with the Talent team\nInterview with our Engineering Manager 30 min\nTechnical Task\nTechnical Interview - 60 min\nFinal interview with VP of Engineering - 30-45 min\nWe are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, colour, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.\nWe are committed to creating a diverse and inclusive workplace where everyone feels welcome and respected. We believe that diversity and inclusion are essential to our success, and we are proud to be an equal opportunity employer.\n\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":6490,"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":"2026-09-26T18:04:18Z"}],"liveness":{"score":51,"band":"ok","label":"Likely open","p_open":0.9,"p_active":0.721,"p_room":0.788,"age_days":7,"expected_fill_days":11,"reasons":["conf:55","urgency","win:late"],"computed_at":"2026-09-29T05:45:00Z"},"pay":{"stated_usd_annual":119222,"is_top_pay":false},"html_url":"https://alion.io/job/benifex-senior-backend-engineer-net","json_url":"https://alion.io/job/benifex-senior-backend-engineer-net.json","meta":{"generated_at":"2026-09-30T01:30:52Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","usage":{"tier":"crawler","counted_by":"address","units_charged":1,"used_today":1104,"day_limit":5000,"remaining_today":3896,"minute_limit":60,"resets_at":"2026-10-01T00:00:00Z"}}}