{"id":1900031,"url":"https://alion.io/job/kainos-senior-software-engineer-c-net","title":"Senior Software Engineer (C#/.NET)","company":{"id":51458,"name":"Kainos","domain":"kainos.com","url":"https://alion.io/company/kainos","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workday","truth_index":{"grade":"B","score":78,"open_postings":8,"ghost_share":0,"stale_share":0.875,"repost_share":0,"time_to_fill_p50_days":39,"computed_at":"2026-10-07T05:47:15Z"}},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Belfast, United Kingdom","Derry, United Kingdom","Birmingham, United Kingdom","United Kingdom"],"countries":["GB"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":68000,"max_usd":134000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":107},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":".NET","optional":false},{"name":"C#","optional":false},{"name":"AWS","optional":true},{"name":"Azure","optional":true},{"name":"CI/CD","optional":true}],"status":"live","first_seen_at":"2026-10-05T10:32:19Z","employer_posted_date":"2026-10-05","last_verified_at":"2026-10-07T21:37:43Z","board_verified":true,"closed_at":null,"days_open":2,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":2},"description":"Join Kainos and Shape the Future\nAt Kainos, we’re problem solvers, innovators, and collaborators - driven by a shared mission to create real impact. Whether we’re transforming digital services for millions, delivering cutting-edge Workday solutions, or pushing the boundaries of technology, we do it together.\nWe believe in a people-first culture, where your ideas are valued, your growth is supported, and your contributions truly make a difference. Here, you’ll be part of a diverse, ambitious team that celebrates creativity and collaboration.\nReady to make your mark? Join us and be part of something bigger.\nMAIN PURPOSE OF THE ROLE & RESPONSIBILITIES IN THE BUSINESS:\nAs a Senior Software Engineer (Senior Associate) in Kainos, you’ll be responsible for developing high quality solutions which delight our customers and impact the lives of users worldwide. It’s a fast-paced environment so it is important for you to make sound, reasoned decisions. You’ll do this whilst learning about new technologies and approaches, with talented colleagues that will help you to learn, develop and grow as you, in turn, mentor those around you.\nMINIMUM (ESSENTIAL) REQUIREMENTS:\nProficient in designing, building, testing and maintaining modern software applications, with strong experience in C#/.NET\nExperience of applying development best practices and patterns in relation to security, scalability and performance\nContributing to technical decisions and direction in a collaborative team environment, including architecture, estimation, product planning, user story/requirement creation.\nExperience of design and development across multiple layers of an application\nMentoring junior team members DESIRABLE:\nGood communication skills, with the ability to communicate issues to technical and non-technical people.\nExperience of Continuous Integration and Continuous Delivery techniques\nExperience of debugging and troubleshooting live applications\nActive participation in knowledge sharing activities, both within the team and with wider non-technical audiences\nExperience of multiple programming languages and data storage technologies\nExperience of balancing technical decisions with user needs and commercial constraints\nKnowledge of public cloud platforms, such as AWS and Azure, including SaaS and PaaS offerings\nEmbracing our differences\nAt Kainos, we believe in the power of diversity, equity and inclusion. 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