Senior C# Software Engineer – London
Zopa· Engineering
Hybrid (London)Employee - PermanentPosted 6mo ago
About the role
Senior C# Software Engineer role in London within Zopa's Cards Engineering / product-engineering tribes. Focus on designing and evolving core banking services, scalable and secure systems, with opportunities across Current Accounts, Lending, Credit Cards and Product Enablement.
Responsibilities
- Owning complex initiatives end to end, from idea to measurable outcome
- Designing scalable backend systems that stand up to real-world scale and complexity
- Making architectural decisions that balance immediate delivery with long-term sustainability
- Bringing structure and clarity to ambiguous problems
- Influencing prioritisation and trade-offs across teams
- Raising the bar for engineering quality, reliability and accountability
- Mentoring engineers and strengthening overall team capability
- Driving continuous improvement in how we build and operate systems
Qualifications
- A track record of delivering high-impact, complex systems in production environments
- Strong testing discipline, with a commitment to strictly following Test-Driven Development (TDD)
- Strong systems thinking and architectural judgement
- Ability to navigate ambiguity and turn complexity into clear, actionable plans
- Confidence making data-informed technical decisions with long-term consequences in mind
- Experience influencing beyond your immediate team
- Deep customer focus and a bias toward measurable outcomes
- Experience mentoring others and amplifying team impact
- Ownership beyond your own output
- Willingness to transition into JVM/Kotlin ecosystem and learn new technologies
Skills
Required:C#/.NETKafkaKubernetesDockerAWS Aurora PostgresTesting and TDD
Last updated Oct 21, 2026. Interested? Apply on the company site.
About Zopa
Easy banking - current accounts, loans & savings
Open a Zopa bank account with cashback and interest. Plus easy-to-use loans, credit cards, savings and more, all in one simple, secure app.
bankingloanssavingscredit cards
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