Senior Software Engineer I

0026 Checkout Technology Ltd; Greater London; Hybrid; GBP 60,000 - 80,000; Full time

Benefits offered by this job

Hybrid working model with flexibility

Inclusive culture encouraging diversity

Job summary

0026 Checkout Technology Ltd is seeking a Senior Software Engineer to develop next-generation payment technologies that enhance merchant acceptance rates and customer experiences. This role involves mentoring junior engineers, collaborating with diverse teams, and ensuring high availability of systems.

The ideal candidate will possess a Bachelor's or Master's degree in a relevant field, be proficient in C# .NET, Java, or Go, and thrive in agile environments. The position offers a hybrid working model for flexibility.

Qualifications

• Bachelor’s or Master’s degree in a relevant field.
• Proficiency in C# .NET, Java, or Go.
• Experience in agile environments.
• Strong problem-solving skills.
• Excellent communication skills.

Responsibilities

• Lead and drive critical projects, setting priorities and deliverables.
• Collaborate with product management and cross-functional teams.
• Design, develop, and maintain software solutions.
• Mentor junior team members in their technical development.
• Operate systems to the highest levels of resilience.

Skills

C# .NET

Java

Go

Agile development

Problem-solving

Excellent communication

Education

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

Job description

Job Summary

Senior Software Engineer at Checkout.com will develop next‑generation payment technologies to help merchants increase acceptance rates, reduce costs, combat fraud, and create outstanding customer experiences. Working across Checkout.com’s portfolio of products, you will design, build, and maintain scalable, high‑availability systems while mentoring junior engineers and collaborating with cross‑functional teams.

Responsibilities

• Lead and drive specific projects that are critical to Checkout’s needs, setting priorities, deadlines, and deliverables.
• Collaborate with product management, design, and other engineering teams across a large community.
• Design, develop, test, deploy, maintain, and enhance software solutions in a backend or full‑stack environment.
• Mentor junior team members and assist in their technical development.
• Build, own, and operate systems to the highest levels of resilience and service.

Qualifications

• Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field.
• Proficiency in C# .NET, Java, or Go with a strong understanding of software development principles in a backend or full‑stack context.
• Excellent communication skills and the ability to interact effectively with a wide range of stakeholders.
• Experience in agile environments and delivering high‑quality code within tight deadlines.
• Strong problem‑solving skills and the ability to work independently as well as part of a team.
• AI proficiency or curiosity, and a willingness to embrace the latest technologies to improve productivity.
• Payments or financial knowledge is a plus, but not required.

Impact

Collaborate with cross‑functional teams; define and design loosely coupled, scalable microservices using industry best practices; stay up‑to‑date with the latest technologies; write clean, maintainable, testable code; mentor junior engineers; and own resilient, high‑reliability systems within Checkout’s impact‑driven culture.

Benefits

Hybrid working model offering flexibility with three days per week in the office to support collaboration and connection.

Inclusive Culture

Checkout.com values diversity and inclusion, encouraging applicants from all backgrounds and identities to apply.