Remote Senior Full-Stack Engineer in Londonderry

We're looking for a Senior Software Engineer to join our team of 10, working primarily on our web app and workplace platform. While you'll be frontend-leaning, you'll also act in a tech lead capacity; designing solutions that span our entire stack, including backend services, APIs, and database models.

In this role, you'll:

• Take ownership of end-to-end feature delivery, from shaping requirements to deployment and monitoring.
• Design technical solutions that involve both frontend interfaces and backend integrations.
• Collaborate closely with product managers, designers, and other engineers to bring new end-user features to life.
• Define and champion engineering best practices across frontend and backend development.
• Contribute to the evolution of our technical architecture as we grow our platform and user base.
• Participate in code reviews, mentor other engineers, and foster a culture of knowledge sharing.
• Help us continually improve our engineering processes, tools, and ways of working.

Our Tech Stack

You'll work across our modern, TypeScript-based stack:

• Frontend: React (Next.js), GraphQL (Apollo), TypeScript
• Backend: Node.js (AWS Lambda), Prisma & PostgreSQL
• Testing: Cypress + Jest
• Infrastructure: AWS, Terraform, CI/CD pipelines
• Practices: Agile, Kanban, pair programming, continuous delivery

What We're Looking For

You'll be a great fit if you:

• Have 7+ years' experience in software engineering, with significant experience in frontend technologies but comfortable working full-stack.
• Are highly proficient in React, TypeScript, and GraphQL, with a strong grasp of backend fundamentals in Node.js.
• Have experience designing technical solutions involving APIs, database models, and service integration.
• Understand scalability, performance, and security across both frontend and backend.
• Enjoy working closely with product and design teams to build features that delight users.
• Are comfortable mentoring others and helping set technical direction for projects.
• Bonus points if you've worked on fintech products or complex transactional systems.

Why Join Penfold

At Penfold, we're on a mission to help everyone save enough to be comfortable in later life. We're tackling one of society's biggest challenges — pensions — by rebuilding the experience from the ground up and making saving simple, engaging, and accessible.

You'll:

• Work on high-impact features used by 100,000+ savers and thousands of businesses.
• Influence the technical direction of our platform and help shape how we deliver value.
• Join a supportive, ambitious, and collaborative team where engineers have a big voice in product decisions.

Benefits

Penfold is committed to providing a working environment where people feel empowered to do their very best work, make a big impact, and enjoy what they do. Our benefits package includes:

• Competitive salary - we review salaries more than once a year to make sure you get what you deserve
• A fantastic pension (country dependent) - we offer a 10% employer contribution pension, where you are welcome to contribute on top (we offer salary sacrifice too), but no requirement for you to do so.
• Unlimited holidays - A minimum of 33 days per year (including 8 Bank Holidays) and the option to take more!
• Medical insurance (country dependent) - through Vitality you get access to Private GPs, Physio, Counselling services and great discounts and offers (think 50% off Virgin Active and PureGym memberships, free Apple Watches)
• Remote working - we have an awesome office you can use anytime but we are a remote-first company. You can work from anywhere in Europe. We trust you to get your work done in whatever environment suits you!
• Best-in-class equipment - MacBook and any WFH equipment you need
• Learning & Professional Development – we conduct regular 360 feedback and focus on role progression that suits each individual. We support everyone with courses, events and coaching to help everyone reach their goals
• We will pay for your travel expenses for you to come to the UK, for company-wide meetings and socials at least every 6 months
• Hired through our talent partner Deel if you are outside of the UK, your taxes are sorted so you don't need to worry