Senior Product Engineer (Backend - UK)

Sequence HQ; Greater London; Hybrid; GBP 80,000 - 130,000; Full time

Job summary

A growing technology firm is in search of senior product engineers to build financial tools for fast-scaling tech companies. The ideal candidate will create exceptional product experiences, guide product direction, and shape backend architecture within a small, collaborative team. The role offers a competitive salary range of £80,000 to £130,000 plus share options, with opportunities for remote work from various locations or in-office at central London or New York.

Qualifications

• Strong backend skills with experience in a strongly typed language.
• Enjoys hands-on coding and shipping products.
• Comfortable in a small, multi-disciplinary team.

Responsibilities

• Create a world-class product experience for users.
• Collaborate with data, product, and design teams.
• Shape backend architecture and solve complex problems.
• Contribute to building an early engineering culture.

Skills

Backend development

Kotlin

Collaboration

Problem-solving

Job description

The role

We’re looking for senior product engineers with strong backend skills to help us build financial tools for modern, fast‑scaling technology companies.

What you'll do :

🚀 Create a world class product experience. You'll help make the experience of implementing and working with the Sequence product second to none. We believe our billing engine is the most flexible and comprehensive out there, however complex financial processes can be challenging to model and expose in an approachable and intuitive way. You'll help us figure out the best ways to go about this, building a backend for our own product, alongside a first‑class API experience for our customers.

🧭 Guide product direction : We believe that all engineering decisions are product decisions, and vice versa. You'll collaborate with data, product and design to choose what we work on and why, and help build Sequence to be the best product and business it can be.

💻 Shape our backend architecture. You'll work on some of our most complex technical problems and help others do the same. You'll help choose how we build things and what we prioritise as a product and engineering team.

👭 Help our small team have outsized impact . We want to build an early engineering culture that values collaboration, learning and teamwork. You'll play an integral role in shaping our product, culture and ways of working to help us achieve this.

This is a great fit if you...

• ✅ Enjoy being hands‑on with a focus on writing code and shipping things. We have a long list of things we want to build.
• ✅ Are happy working day‑to‑day in a backend‑focused role using a strongly typed language. Our services are built in Kotlin, though you don't need experience in that language to join us, many of our engineers have done the same and enjoyed the challenge of learning a new set of skills.
• ✅ Want to work as part of a small, multi‑disciplinary team and collaborate closely with others.
• ✅ Want to work on something new. The biggest product and company decisions still lie ahead of us.
• ✅ Enjoy the uncertainty and unpredictability that comes with an early stage company.
• ✅ Are happy to learn deeply about our customers, the problems they face, and work with them to figure out solutions.

This might not be the right role if you…

• 👎 Enjoy larger organisation structures and only staying within your area of expertise. We’re a small team early on the journey and things change quickly as we learn more.
• 👎 Want a traditional engineering team set up, with a predictable roadmap, clearly scoped out tickets provided for you, and so on.
• 👎 Prefer a slower pace. We're tackling real problems for our customers today, so we need to move quickly.
• 👎 Want all of the benefits that come with an larger, established tech company.

What we offer :

The salary range for this role is £80,000 – £130,000 + share options.

We support remote work within + / - 3 hours of GMT and EST, or you can work from our offices in central London or New York — whatever you prefer.

Our hiring process :

The hiring process follows the same general outline for all engineering roles :

1. First interview (15 mins) – A 15‑minute interview with an engineer to learn more about you and your experience.
2. Technical Interview (60 mins) – A live pair‑programming exercise with one or two of our engineers. We’ll ask you to start a new project in a language of your choice and you’ll work with the engineers to solve some requirements and write a test suite.
3. Product interview (30 mins) – Focused on how you approach customer problems, own the solutions, and apply a product mindset.
4. Final interview (30 mins) – A final interview with our CEO, Riya.