Senior Software Engineer

ctrl-alt.co; Greater London; On-site; GBP 70,000 - 90,000; Full time

Benefits offered by this job

Competitive salaries with regular reviews

Generous stock options

Premium private healthcare

26 days of annual leave plus birthday off

Modern offices designed for collaboration

Job summary

Ctrl Alt is searching for a Senior Software Engineer to build the future of tokenization. You will design and maintain scalable solutions while collaborating with product teams.

With over 5 years of experience expected, proficiency in TypeScript or JavaScript is essential. This position offers a dynamic and ambitious working environment in London, with significant responsibilities and the chance for impactful work.

Qualifications

• 5+ years experience as a Software Engineer.
• Proficient in backend code for performance and efficiency.
• Experience working in Agile environments.

Responsibilities

• Design, build and maintain high performing, flexible and scalable solutions.
• Collaborate with team members and other engineers.
• Mentor engineers on your team.

Skills

TypeScript/JavaScript backend frameworks

RESTful application interfaces

Automated testing

CI/CD pipelines

Job description

About Ctrl Alt

Ctrl Alt is designing and operating the on-chain infrastructure powering digital capital markets globally. We bring together a unique blend of expertise in financial markets and cutting‑edge in‑house technology to deliver tailored, compliant solutions in the alternative assets space. Since launching in 2022, we’ve tokenized over $1.5 bn in assets across real estate, private credit, funds, litigation finance and more.

We’re building a high‑performance, people‑first culture where ambitious individuals can thrive. We move fast, think big and hold ourselves to a high bar, while keeping things collaborative, open and genuinely fun. At Ctrl Alt ideas win on merit, teams work closely with leadership, and everyone has a voice in shaping what we build next.

We believe that hard work should come with real reward. You won’t just join a company – you’ll help build one. Last year alone, we grew from 17 to 50 people, and this year we’re going faster and further. That means real 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 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

Bring bold ideas to life and influence our platform, products, and how we operate from day one.

How we support you

• Competitive salaries with regular reviews that reflect your impact, performance, and progression.
• Generous stock options so you directly share in the company’s growth and long‑term success.
• Premium private healthcare to support your physical wellbeing.
• 26 days of annual leave, plus your birthday off, and regional bank holidays – with flexible leave so you can take time off when you need it.
• An enhanced parental leave policy to support you and your family at every stage.
• A MacBook, screens, and any additional equipment you need to perform at a high level.
• Access to salary sacrifice schemes covering childcare, groceries, EV cars, tech, pensions, bikes, and subscriptions. (UK Only)
• Modern, centrally located offices in London, Belfast, Dundalk, and Dubai – designed for collaboration and focus.
• An annual learning and personal development budget for training, exams, certifications, and qualifications – whatever helps you move forward.