Senior Software Engineer (Backend)

Super Payments; Greater London; Hybrid; GBP 70,000 - 90,000; Full time

Benefits offered by this job

Tax advantage Share Options

Work from home set up

Contributory Pension Scheme

Team lunch and social evenings

Your birthday off, plus one Revival day

Job summary

A financial technology company in Greater London is searching for an experienced Software Engineer to lead the design of their B2B API and payments infrastructure. Ideal candidates have at least 8 years of software engineering experience, a background in financial services, and are comfortable working with Node.js, TypeScript, and AWS. The role also involves mentoring junior engineers and collaborating with product teams to deliver customer-centric solutions. Attractive benefits including share options and remote work setup offered.

Qualifications

• At least 8 years of experience in software engineering.
• Experience in financial services or payments infrastructure.
• Experience with cloud-based infrastructure and Infrastructure as Code.

Responsibilities

• Spearhead the design evolution of B2B API and payments infrastructure.
• Collaborate with UX and product teams on ideation.
• Mentor and support the growth of the engineering community.

Skills

Software Engineering

Agile Practices

Node.js

TypeScript

AWS Cloud Technologies

REST APIs

Terraform

Kubernetes

Job description

Our mission is to power free payments for businesses and more rewarding shopping for customers so that everyone wins. By removing payment fees and passing savings back to customers, we are disrupting the payments industry while helping businesses increase sales and loyalty.

With Buy Now, Pay Later (BNPL) free for merchants and 0% card payment processing, Super gives businesses a powerful way to reduce costs, grow sales, and reward customers.

Already trusted by thousands of businesses and more than 2 million customers, Super is growing fast, supported by leading investors including Accel, Union Square Ventures and LocalGlobe, and led by Samir Desai, founder and former CEO of Funding Circle.

Our Values

• Customer obsessed: We only succeed when our customers do.
• Move fast: Build, test and improve quickly. Progress matters more than perfection.
• Own it: Be accountable, solve problems, and make it happen.
• Be open: Act with honesty and respect. Transparency builds trust.
• Win together: Collaboration beats ego every time.

Our Technology

We leverage the latest tools and technologies to create a seamless, customer‑centric digital experience. Our core stack is built around Node.js, TypeScript, and NestJS, with a front‑end powered by React. We deploy using AWS cloud services and Kubernetes, ensuring scalability and resilience. Infrastructure as Code is fundamental to our approach, and we use Terraform to manage our cloud resources.

Our architecture is cloud‑native, event‑driven, and distributed, built on Amazon EventBridge and SQS, with services exposed via REST.

We are driven by data science, machine learning, and analytics, using multi‑variant testing to personalise user experiences across every digital channel.

However, it’s not just about the technology. We are passionate about continuous delivery, automation, and rapid iteration. Our deployment pipeline is fully automated, covering everything from branching, building, testing, and shipping to monitoring and alerting—allowing us to focus on delivering value to our customers.

Technology is at the heart of our business, and we value diverse perspectives. Bring your ideas, experience, and problem‑solving mindset—we’ll navigate obstacles together.

What You’ll Be Doing

• Spearheading the design and evolution of our B2B API, personalisation and payments infrastructure.
• Collaborating with UX and product teams in discovery, ideation, and problem‑solving.
• Contributing to engineering‑wide initiatives, participating in technical discussions, architecture decisions, and best practice sharing.
• Developing a deep understanding of our business, customers, and domain—applying your judgement to make autonomous decisions.
• Mentoring and supporting the growth of our engineering community, sharing knowledge through pairing, talks, and external speaking opportunities.

We’d love to hear from you if you:

• Have at least 8 years of experience in software engineering.
• Have worked on any one of the following areas:
  • Financial Services in areas such as payments, wealth management, or banking.
  • The payments infrastructure at a large eCommerce site.
  • High‑volume transaction scale‑up (e.g., betting, gaming, or streaming).
• Have a delivery‑focused mindset, using agile practices to drive team success.
• Bring experience with a variety of programming languages.
• Are willing to work with Node.js, TypeScript, NestJS, and AWS cloud technologies.
• Have experience designing and provisioning cloud‑based infrastructure, using Infrastructure as Code (Terraform).
• Ideally, have worked with Kubernetes and understand the fundamentals of containerised deployments.
• Have built and supported publicly accessible REST APIs.
• Understand application development, continuous delivery, test automation, and security within distributed services.
• Have a track record of improving code quality, performance, stability, and scalability.
• Are comfortable working in a fast‑paced, evolving start‑up environment.
• Can work independently, tackling ambiguous challenges and driving solutions forward.

*The stated experience and background is a guide and does not preclude applications from candidates with more or less experience, provided the requisite skills can be demonstrated.

Our Benefits - here’s a few and more to come …

• Tax advantage Share Options
• Work from home set up
• Contributory Pension Scheme
• Team lunch and social evenings
• Your birthday off, plus one Revival day

Please let us know if you require any reasonable adjustments at any point during the application and/or recruitment process.

Super Payments is an equal opportunity employer, embracing diversity in all its forms and fostering an inclusive environment. The company will not unlawfully discriminate on grounds of gender, sexual orientation, marital or civil partner status, gender reassignment, race, religion or belief, colour, nationality, ethnic or national origin, disability or age, neurodiversity status, pregnancy or trade union membership.