Golang Software Engineer

Rollbar, Inc.; City Of London; Hybrid; GBP 65,000 - 85,000; Full time

Job summary

A leading fintech company in London is seeking a Software Engineer proficient in Go to join its Payment Performance team. This role involves designing scalable systems and collaborating with cross-functional teams. Ideal candidates will have a Bachelor's degree in Computer Science and excellent problem-solving skills. The position offers a hybrid working model to promote collaboration and employee success.

Benefits

Hybrid working model with flexibility

Opportunities for career growth

Qualifications

• Expert proficiency in Go with a strong understanding of software development principles.
• Experience working in agile environments and delivering high-quality code.
• AI proficiency or curiosity to embrace new technology.

Responsibilities

• Collaborate with cross-functional teams including product management.
• Define and design scalable systems in a microservices architecture.
• Write clean, maintainable, extendable, and testable code.

Skills

Proficient in Go

Great communication skills

Excellent problem-solving skills

Education

Bachelor's or Master's degree in Computer Science, Engineering, or related field

Job description

We’re Checkout.com – you might not know our name, but companies like eBay, ASOS, Klarna, Uber Eats, and Sony do. That moment when you check out online? We make it happen.

Checkout.com is where the world checks out. Our global network powers billions of transactions every year, making money move without making a fuss. We spent years perfecting a service most people will never notice. Because when digital payments just work, businesses grow, customers stay, and no one stops to think about why.

With 19 offices spanning six continents, we feel at home everywhere – but London is our HQ. Wherever our people work their magic, they’re fast-moving, performance-obsessed, and driven by being better every day. Ideal. Because a role here isn’t just another job; it’s a career-defining opportunity to build the future of fintech.

Job Description

Checkout.com is one of the most exciting fintechs in the world. Our mission is to enable businesses and their communities to thrive in the digital economy. We’re the strategic payments partner for some of the best known fast-moving brands globally such as Wise, The Hut Group, Sony Electronics, Sainsbury’s, Deliveroo, Adidas, Klarna and many others. Purpose-built with performance and scalability in mind, our flexible cloud-based payments platform helps global enterprises launch new products and create experiences customers love. And it's not just what we build that makes us different. It's how.

We empower passionate problem-solvers to collaborate, innovate and do their best work. That’s why we’re on the Forbes Cloud 100 list and a Great Place to Work accredited company. And we’re just getting started. We’re building diverse and inclusive teams around the world — because that’s how we create even better experiences for our merchants and our partners. And we need your help. Join us to build the digital economy of tomorrow.

About the team: The Payment Performance Team

This role sits specifically in our Payment Performance team. Our focus is making payments have a higher probability of succeeding when they come through us, thus ensuring higher revenues for all of our merchants.

In order to achieve this, we need to maximize conversion rates and minimize fraud rates – by leveraging ML and smart rules as well as an experiment-driven approach to ensure gradual improvements. You will be working with MLEs, back-end engineers, front-end engineers and data scientists in order to innovate and keep Checkout as a best-in-class provider.

We're looking for Software engineers who bring fresh ideas, have a curious nature and are passionate about working in an Engineering environment which focuses on building products to achieve the company's strategic goals. You’ll get to work with teams from across Checkout.com’s portfolio of products and services who all have a real customer first philosophy.

We need our engineers to be versatile and be enthusiastic to take on new problems as we continue to push technology forward. With your technical expertise you will lead project priorities, deadlines, and deliverables. You will design, develop, test, deploy, maintain, and enhance software solutions.

What are we looking for:

• We are specifically looking for Software Engineers who are proficient in Go.
• Bachelor's or Master's degree in Computer Science, Engineering, or related field.
• Expert proficiency in Go with a strong understanding of software development principles in a backend environment.
• Great communication skills and ability to interact effectively with a wide range of stakeholders.
• Experience working in agile environments and delivering high-quality code within tight deadlines.
• Excellent problem-solving skills and the ability to work independently as well as part of a team.
• Someone who is AI proficient or AI curious, you will be hungry to embrace what the latest technology has to offer to enhance yours and your teams productivity.
• Payments or financial knowledge is a plus, but not a necessity.

How you’ll make an impact

• Be part of, and collaborate with, cross‑functional teams including product management, across a large engineering community.
• Define and design loosely coupled, scalable systems in a wider microservices using industry best practices.
• Stay up-to-date, use, and spread knowledge of the latest technologies used by Checkout.
• Write clean, maintainable, extendable and testable code on some of Checkout’s most impactful systems.
• Build, own and operate your systems to the highest levels of resilience and service.

Bring all of you to work

We create the conditions for high performers to thrive – through real ownership, fewer blockers, and work that makes a difference from day one.

Here, you’ll move fast, take on meaningful challenges, and be recognized for the impact you deliver. It’s a place where ambition gets met with opportunity – and where your growth is in your hands.

We work as one team, and we back each other to succeed. So whatever your background or identity, if you’re ready to grow and make a difference, you’ll be right at home here.

It’s important we set you up for success and make our process as accessible as possible. So let us know in your application, or tell your recruiter directly, if you need anything to make your experience or working environment more comfortable.

Life at Checkout.com

We understand that work is just one part of your life. Our hybrid working model offers flexibility, with three days per week in the office to support collaboration and connection.