Senior full stack engineer

Remote | Full-time

About Our Client

Our client is a fast-growing, mission-driven fintech company building technology that enables more meaningful financial decision-making at scale. Their platform supports the movement of funds into high-impact causes globally, helping millions of users engage with giving in more intentional and accessible ways. Since launching, the business has facilitated tens of millions in transactions and continues to scale rapidly across international markets. With a strong product-led approach, they are focused on building reliable, high-performance systems that power impactful user experiences.

About The Role

As a Senior Full Stack Engineer, you'll play a key role in building and evolving the systems that power a suite of impactful digital products. You'll take ownership of delivering high-quality features end-to-end, working across the stack to solve meaningful, real-world problems.

You'll contribute to platform-level architecture, building core services, APIs, and integration layers that enable multiple products to scale reliably. Working closely with product and design, you'll help define clean system boundaries and make pragmatic decisions that balance speed with long-term resilience.

You’ll join a small, remote-first, product-focused team where engineers have real ownership and influence over technical direction.

Key Responsibilities Own features end-to-end, from concept through to production, including performance, reliability, and security Balance speed and quality, making pragmatic trade-offs to support both short-term delivery and long-term scalability Strengthen core user journeys by improving reliability, reducing friction, and supporting growth Contribute to system design across APIs, event-driven architecture, and shared services Build scalable, reusable backend services and clean integration layers Maintain high engineering standards through testing, code quality, and thoughtful reviews Mentor and support other engineers, helping unblock delivery and share context Collaborate cross-functionally with product and design to deliver meaningful outcomes Work autonomously while communicating clearly and surfacing risks early Requirements About You Take ownership and deliver meaningful outcomes end-to-end Contribute thoughtfully to technical decisions and trade-offs Balance delivery speed with system reliability and maintainability Are curious, pragmatic, and comfortable learning new domains Collaborate effectively in remote, cross-functional teams Your Experience Building and shipping full stack applications in production Backend development (ideally Node.js / Type Script or similar) Frontend development using modern frameworks (e.g. React) Designing and maintaining APIs and integration layers Working with cloud infrastructure (e.g. AWS, serverless, containers) Event-driven systems (queues, background jobs, webhooks) Infrastructure as code (e.g. Terraform, CI/CD tooling) Bonus Experience Payments or financial systems Notifications and messaging systems Distributed systems and microservices Identity and authentication flows Mobile-first backend design considerations Working in regulated or compliance-heavy environments Benefits Competitive salary Generous paid time off aligned to your location Remote-first working with flexible hours Annual learning & development budget + dedicated learning days Regular team meetups and virtual socials Process Initial recruiter screen Technical task Technical / system design interview Final team interview Working Style

This is a fully remote role within a distributed team. The company operates with a high-trust, high-performance culture, with a focus on outcomes over hours. There is a strong emphasis on ownership, collaboration, and continuous improvement.

Diversity & Inclusion

Our client is committed to building an inclusive and diverse team, recognising that varied perspectives lead to better products and greater impact. They actively encourage applications from individuals of all backgrounds and experiences.

Values Purpose-driven work - building products that create meaningful impact Ownership mentality - taking responsibility and acting proactively Continuous growth - investing in people as much as products Collaboration - working closely across teams with shared goals User focus - keeping end users at the centre of decision-making