Senior Engineer, Fullstack - Growth

Accountabilities:

In this role, you will take ownership of the frontend experience and help shape the technical foundations of the Growth team while collaborating across disciplines to deliver effective onboarding solutions.

• Lead frontend architecture and technical direction for the self-service onboarding journey and platform experience.

• Spend approximately 80% of your hands-on development time on frontend engineering and 20% on backend development, adapting as priorities evolve.

• Collaborate closely with Design to take onboarding and platform concepts from initial ideas through production, ensuring a smooth and intuitive merchant experience.

• Mentor engineers and support the development of frontend skills, engineering judgment, and code quality across the team.

• Establish frontend conventions, architecture review practices, testing strategies, and quality standards for a growing engineering team.

• Contribute to the Python backend when necessary to unblock frontend work or deliver end-to-end features.

• Exercise independent technical judgment, challenge product or design decisions when appropriate, and help define the team's engineering practices in an evolving environment.

• Contribute to a culture of collaboration, continuous improvement, and high-quality product development.

Requirements:

The ideal candidate brings strong frontend engineering expertise, proven technical leadership, and the confidence to shape architecture and engineering standards in a team that is still taking form. You should be comfortable working autonomously, mentoring others, and contributing beyond your primary area of expertise.

• Demonstrated experience architecting and building complex frontend applications in production environments.

• Strong frontend engineering skills, including the ability to make sound architectural decisions rather than simply implementing existing design systems.

• Confidence acting as the most senior frontend technical voice on a team, including constructively challenging product and design decisions when technical considerations require it.

• Some backend development experience and a genuine willingness to work with Python codebases; deep Python expertise is not required.

• Experience mentoring other engineers, ideally including early-career team members.

• Ability to work independently, establish appropriate technical standards, and make decisions without relying on extensive guidance.

• Strong collaboration and communication skills, with the ability to work effectively with Design, Product, and Engineering colleagues.

• Adaptability and comfort with ambiguity, particularly in a newly formed team where processes and tools are still evolving.

Nice to have:

• Experience building or integrating payment products.

• Experience working on growth-oriented product experiences, particularly merchant onboarding, activation, or self-service journeys.

Benefits:

• Fully remote work in a globally distributed environment.

• Competitive share options.

• Flexible annual leave, with a minimum of 25 days to be taken.

• Access to coworking spaces across major cities.

• Company workations and an annual company retreat.

• High-quality equipment suited to your role.

• £500 contribution toward your home office setup.

• Generous learning and professional development budget.

• Private medical insurance.

• Additional benefits and perks depending on location.

• A collaborative, supportive environment with onboarding designed to help employees succeed.

• The opportunity to influence technical direction and engineering standards in a growing team.