{"id":141609,"url":"https://alion.io/job/zopa-senior-c-software-engineer-london","title":"Senior C# Software Engineer – London","company":{"id":6054,"name":"Zopa","domain":"zopa.com","url":"https://alion.io/company/zopa","size_band":"501-1000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Lever","truth_index":{"grade":"B","score":84,"open_postings":16,"ghost_share":0,"stale_share":0.563,"repost_share":0.125,"time_to_fill_p50_days":44,"computed_at":"2026-10-27T05:46:45Z"}},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["London, United Kingdom"],"countries":["GB"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":87000,"max_usd":168000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":139},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":".NET","optional":false},{"name":"Amazon Aurora","optional":false},{"name":"Apache Kafka","optional":false},{"name":"AWS","optional":false},{"name":"C#","optional":false},{"name":"Docker","optional":false},{"name":"Kotlin","optional":false},{"name":"Kubernetes","optional":false},{"name":"PostgreSQL","optional":false}],"status":"live","first_seen_at":"2026-02-18T11:26:53Z","employer_posted_date":"2026-02-18","last_verified_at":"2026-10-27T08:56:21Z","board_verified":true,"closed_at":null,"days_open":251,"trust":{"level":"stale","repost_count":0,"flags":["stale"],"days_open":250},"description":"The engineering challenge\nYou will design and evolve the services that power core banking products. The systems you help build process thousands of financial transactions every day. They must be scalable, resilient and secure. When money moves, it has to work. Every time.\nBut this role goes beyond implementation.\nYou will shape technical direction. Influence cross-team initiatives. Own complex, high-impact work from concept through to production. You will help decide not just how we build, but what we build and why.\nThis is senior in impact, not just title.\nWe’re growing across several of our product-engineering tribes at Zopa, with current opportunities in Current Accounts, Lending, Credit Cards and Product Enablement.\nWe care deeply about great engineering, which is why our core stack is Kotlin, running on a modern platform with Kafka, Kubernetes, Docker and AWS Aurora Postgres. But great engineers aren’t defined by a single language which is why we are agnostic with our hiring.\nWe want the right people, not the 'right' language, so if you come from a C#/.NET background, bring solid fundamentals, and have an appetite for learning something new, we’ll invest in you, help you grow your skills and confidently step into our Kotlin ecosystem.\nYour impact:\nOwning complex initiatives end to end, from idea to measurable outcome\n\nDesigning scalable backend systems that stand up to real-world scale and complexity\n\nMaking architectural decisions that balance immediate delivery with long-term sustainability\n\nBringing structure and clarity to ambiguous problems\n\nInfluencing prioritisation and trade-offs across teams\n\nRaising the bar for engineering quality, reliability and accountability\n\nMentoring engineers and strengthening overall team capability\n\nDriving continuous improvement in how we build and operate systems\n\nYour toolkit:\nYou'll work with C#, Kafka, Kubernetes, Docker, AWS Aurora Postgres, and other modern technologies. If you haven't worked with all of these, we value skilled engineers with a willingness to learn.\nA track record of delivering high-impact, complex systems in production environments\nStrong testing discipline, with a commitment to strictly following Test-Driven Development (TDD) \nStrong systems thinking and architectural judgement\nThe ability to navigate ambiguity and turn complexity into clear, actionable plans\nConfidence making data-informed technical decisions with long-term consequences in mind\nExperience influencing beyond your immediate team\nA deep customer focus and a bias toward measurable outcomes\nExperience mentoring others and amplifying team impact\nOwnership beyond your own output\nWe’ll support your transition and cross-training into a JVM/Kotlin environment. What matters most to us is how you think, how you approach problem-solving, and the scale and impact of what you’ve built.\nOur engineering culture:\nCustomer impact over unnecessary complexity\nTeam success over individual heroics\nOperational ownership, not just feature delivery\nContinuous improvement through honest feedback\nAdded bonus:\nExperience with fintech or banking is a plus, but we value problem-solvers from all backgrounds","description_format":"text","description_chars":3166,"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":[],"hiring_locations":[{"name":"United Kingdom","iso":"GB","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Crowdfunding & P2P Lending","Cards & Card Issuing","Digital Banks & Neobanks","Consumer Loans & Pawnshops"],"lifecycle":[{"event":"open","at":"2026-02-18T11:26:53Z"},{"event":"open","at":"2026-09-25T15:08:26Z"}],"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":"2026-10-27T06:21:15+00:00","sources":["UK Home Office: register of licensed sponsors (workers)"],"filings_for_role_12m":0}],"liveness":{"score":7,"band":"cold","label":"Long shot","p_open":1,"p_active":0.262,"p_room":0.28,"age_days":250,"expected_fill_days":44,"reasons":["conf:1","stale_co","win:tail","crowd:"],"computed_at":"2026-10-27T05:46:45Z"},"pay":null,"html_url":"https://alion.io/job/zopa-senior-c-software-engineer-london","json_url":"https://alion.io/job/zopa-senior-c-software-engineer-london.json","meta":{"generated_at":"2026-10-27T12:53:22Z","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":816,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-28T00:00:00Z"}},"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":6054},"rest":"https://alion.io/mcp/rest/get_company?id=6054"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fzopa-senior-c-software-engineer-london"},{"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%2Fzopa-senior-c-software-engineer-london"},{"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%2Fzopa-senior-c-software-engineer-london"},{"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/zopa-senior-c-software-engineer-london\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fzopa-senior-c-software-engineer-london"}]}