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# Senior Software Engineer

- **Company:** Alt Ctrl Alt
- **Location:** London, UK
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** JavaScript (Programming Language), Application Programming Interfaces (APIs), Agile Methodology, Automation of Tests, Next.js, TypeScript, ReactJS, Backend, NestJS, Restful APIs
- **Published:** August 20, 2026
- **Apply:** https://www.apply4u.co.uk/jobs/senior-software-engineer/42928569

## About the Role

investments, manage their portfolios and participate in voting rights of their assets Build APIs for our partners to access and place orders on our platform Take a loosely defined problem through to a valid, technically sound, thoroughly documented, tested, and implemented software solution Collaborate with team members and other engineers across the company Advocate best coding practices to raise the bar for you, your team and the company Mentor engineers on your team supporting them in their growth This role will be a great fit if you 5+ years experience as a Software Engineer Proficiency working with TypeScript/JavaScript backend frameworks (Express, NestJS or similar) Comfortable writing backend code to be performant and efficient Experience building RESTful application interfaces and designing APIs Experience working as a part of a multi-person development team that utilizes automated testing, CI/CD pipelines and peer reviews in an Agile Environment Nice to
haves Strong engineering principles Excellent communication skills - written and verbal Experience in security-first technical architecture Experience in React and NextJS Our Benefits Join a scaling fintech building the next generation of investment banking. You'll work at the intersection of capital markets and cutting-edge blockchain technology, helping drive and shape the future of financial infrastructure. What it's like working at Ctrl Alt Build and own the future of finance Take real responsibility in shaping digital capital markets, with the autonomy to lead decisions and drive impact. Solve meaningful problems with exceptional people Tackle complex challenges at the intersection of finance and technology alongside leaders with experience from Morgan Stanley, Credit Suisse, UBS, and Revolut. Grow fast in a high-performance environment Stretch beyond your comfort zone through close collaboration, rapid feedback, and continuous learning. Innovate and make your mark

## Description

responsibility, meaningful impact, and the opportunity to grow alongside a company that's redefining the future of finance through the tokenization of alternative assets. If you're excited by scale-up energy, ownership, and the chance to help shape both a business and a culture, Ctrl Alt is where you can do the most rewarding work of your career. The Opportunity We're looking for a Senior Software Engineer to join our team and help us build the future of tokenization at Ctrl Alt. As a full-stack engineer you'll be working within small feature teams to deliver solutions to real problems that make it into the hands of users within days, not months. You will work closely with colleagues in product to understand design and use your initiative as well as skill to implement technical solutions. Key Responsibilities Design, build and maintain high performing, flexible and scalable solutions Build upon our existing app to create products and features that help our users understand their


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