Senior Software Engineer

Capital One; Greater London; On-site; GBP 90,000 - 120,000; Full time

Benefits offered by this job

£5,000 external qualifications funding

Pension

Private medical insurance

Parental leave

Hybrid/flexible work

Job summary

Capital One UK is seeking a Senior Software Engineer in London to design, develop, test and maintain software that automates core business processes. You will work across tech, product and operations to deliver high-impact solutions in a hybrid setup.

You’ll use Java as a primary language, with Typescript and Python in the mix, and engage with cloud/AWS, Docker and Jenkins while growing architectural skills and leadership capabilities.

Qualifications

• Design, develop, test and maintain software products that automate core business processes.
• Collaborate with Business, Technology and Operations to build high-impact solutions.
• Willingness to learn and adapt to new technologies.

Responsibilities

• Design, develop, test and maintain software across services.
• Collaborate with product, design and other disciplines to shape architecture.
• Automate deployment pipelines and testing to improve delivery and quality.

Skills

Java

Typescript

Python

Cloud & AWS

Architectural thinking

Tools

Docker

Jenkins

Gradle

Job description

White Collar Factory (95009), United Kingdom, London, London Senior Software Engineer Job Title: Senior Software Engineer Location: London - Hybrid Working Pattern: 3 days in-office (Tuesday-Thursday) and 2 days remote.

Our Mission

We’re on a mission to be a force for good in lending. Throughout our almost 30-year history, we’ve consistently been recognised as a great place to work; in 2026, Capital One was officially ranked 9th in the UK’s Best Workplaces™ list. Hear from our team about what it’s like working at Capital One UK.

About the Role

Working in and across tech teams is a natural part of our outcome-based culture, so you’ll have plenty of opportunity to talk, coach and learn with many great and diverse individuals. In this role, you will design, develop, test, and maintain software products that automate core business processes. You will walk in the shoes of our users, collaborating with Business, Technology, and Operations teams to build frictionless, high-impact solutions.

You do not need to be an expert in all of these areas; we are primarily looking for excellent problem solvers with a strong willingness to learn and adapt to new technologies:

• Java (built with Gradle), makes up most of our services, although Typescript and Python can be found in the right places
• Cloud & AWS technologies, driving our journey into public cloud architecture
• Docker, for our containerised applications
• Jenkins, for continuous integration and deployment

• You are passionate about creating products that produce good customer outcomes
• You enjoy working with other technologists, alongside product, design and other disciplines
• You want to contribute to new designs of new product iterations, thinking strategically about architectural decisions and can communicate well with stakeholders
• You appreciate the sensitivity of customer data and the resiliency, performance and security that demands
• You enjoy automation (unified deployment pipelines, automated testing) and aspire to automate all but the creative problem solving
• You want to develop yourself, with access to various support systems (learning, mentorship, conferences, progression)

Where and how you'll work

This is a permanent position based in our London office. We embrace a hybrid approach to work. You’ll spend three days a week in the office (Tuesday-Thursday), with Monday and Friday being dedicated work‑from‑home days. Our offices are designed to inspire and support you. Our London office boasts a rooftop running track and coffee bar.

What’s in it for you

We invest in the growth of our people alongside our business. You will have extensive opportunities to learn and develop your career, including access to up to £5,000 in funding for external qualifications. In addition to career development, our comprehensive benefits package is designed to grow with you, ensuring your wellbeing is prioritised at every stage of your career:

• Wealth & Future: Competitive pension and performance-based bonus schemes
• Holidays: Start with 25 days of annual leave, increasing with tenure. Need more? You have the option to buy 5 additional days.
• Health: Access premium care through our private medical insurance.
• Family Support: We champion your milestones with enhanced parental leave.
• A full list of our benefits is available here.

What you should know about how we recruit

We pride ourselves on hiring the best people, not the same people. Building diverse and inclusive teams is the right thing to do and the smart thing to do. We want to work with top talent: whoever you are, whatever you look like, wherever you come from. We know it’s about what you do, not just what you say. That’s why we make our recruitment process fair and accessible. We value diversity, inclusion and belonging at our core. We empower our associates to do great work by creating an inclusive culture—one that values diverse perspectives, fosters collaboration and encourages innovative ideas—and a place where associates of all backgrounds can thrive by bringing their most authentic selves to work. We call this our Culture of Belonging, and it rests at the heart of our business. Our associate‑led Business Resource Groups were created to help support our diverse population and include over 10 groups across our offices. Because each Business Resource Group is as unique as the population it serves, they offer a range of activities, networking opportunities, special events and learning programmes to associates.

If you require a reasonable adjustment, please contact [e-mail] All information will be kept confidential and will only be used for the purpose of applying a reasonable adjustment. For technical support or questions about Capital One's recruiting process, please send an email to [e-mail]

Capital One Financial is made up of several different entities. Please note that any position posted in Canada is for Capital One Canada, any position posted in the United Kingdom is for Capital One Europe and any position posted in the Philippines is for Capital One Philippines Service Corp. (COPSSC). At Capital One, we’re building a leading information-based technology company. Still founder‑led by Chairman and Chief Executive Officer Richard Fairbank, Capital One is on a mission to help our customers succeed by bringing ingenuity, simplicity, and humanity to banking. We measure our efforts by the success our customers enjoy and the advocacy they exhibit.