Senior Software Engineer I

Company Description

. You might not know our name, but companies like eBay, Spotify, Klarna, Uber, and Sony do, because we’re behind many of the digital experiences you use every day.

We are where the world checks out, enabling over 10 billion transactions yearly for more than one billion global shoppers.

Whether you want to book a holiday, order food, renew a subscription, or check out online, there’s a good chance our tech powers the payments behind the scenes. Our platform helps the most ambitious businesses deliver effortless digital experiences, at scale.

If you want to do career-defining work, you’ve come to the right place. We move fast, think globally, and believe great teams are built by hiring exceptional people with conviction, curiosity, and the desire to make an impact.

With 20 offices across six continents and London as our HQ, we’re shaping the future of fintech – and we’re just getting started.

About The Role

As a Senior Software Developer at Checkout.com, you will be embedded within the Identity Verification Team, a critical function focused on building innovative products to verify the identities of individuals and businesses globally.

Company Description

. You might not know our name, but companies like eBay, Spotify, Klarna, Uber, and Sony do, because we’re behind many of the digital experiences you use every day.

We are where the world checks out, enabling over 10 billion transactions yearly for more than one billion global shoppers.

Whether you want to book a holiday, order food, renew a subscription, or check out online, there’s a good chance our tech powers the payments behind the scenes. Our platform helps the most ambitious businesses deliver effortless digital experiences, at scale.

If you want to do career-defining work, you’ve come to the right place. We move fast, think globally, and believe great teams are built by hiring exceptional people with conviction, curiosity, and the desire to make an impact.

With 20 offices across six continents and London as our HQ, we’re shaping the future of fintech – and we’re just getting started.

About The Role

As a Senior Software Developer at Checkout.com, you will be embedded within the Identity Verification Team, a critical function focused on building innovative products to verify the identities of individuals and businesses globally.

In this high-impact role, you will be instrumental in the development of next-generation verification features, deploying intelligent, production-ready solutions by leveraging state-of-the-art Orchestration technologies as well as Generative AI and Computer Vision technologies. You will be expected to work closely and collaboratively with Product, DevOps, DataScientist, and Data teams to ensure successful, end-to-end delivery of these solutions, while constantly researching and integrating emerging technologies. A core part of your contribution will be safeguarding data integrity and ensuring compliance, and translating complex data insights into clear, actionable recommendations for stakeholders to support informed, data-driven decision-making across Checkout.com.

What You Will Be Doing

• Drive the design and development of innovative, complex and scalable applications for real‑world identity verification challenges in a wider microservices using industry best practices.
• Take full ownership of new and existing features and service, managing the end-to-end lifecycle from initial conceptualization and design through to deployment and monitoring in a production environment.
• Actively collaborate with cross‑functional teams (Engineering, Product, Risk) across the company to maximize the positive impact of data science initiatives.
• Champion a culture of technical excellence, cross‑team learning, and knowledge sharing within the Data organization.
• Be part of, and collaborate with, cross‑functional teams including product management, across a large engineering community.
• 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.
• Mentor junior team members and assist in their technical development

What Are We Looking For

• Bachelor's or Master's degree in Computer Science, Engineering, or related field
• Over 5 years of experience as a Software Engineer working with complex, large-scale, and diversified applications and tech stacks.
• Proficiency in C# .NET, with a strong understanding of software development principles in either a backend or full stack 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