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Software Engineer I

Checkout.com - Paris, France - Hybrid - posted 2026-10-13

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Checkout.com is a global payments platform powering over 10 billion transactions yearly for more than one billion shoppers worldwide. Clients include eBay, Spotify, Klarna, Uber, and Sony. The company operates 20 offices across six continents with London as headquarters. As a Software Engineer I, you will develop next-generation payments technologies that help merchants boost acceptance rates, reduce processing costs, and combat fraud. You'll work on projects critical to Checkout's strategic goals, collaborating with cross-functional teams including product management across a large engineering community. Key responsibilities include: - Designing, developing, testing, deploying, maintaining, and enhancing software solutions - Defining and designing loosely coupled, scalable systems using microservices architecture and industry best practices - Writing clean, maintainable, extendable, and testable code on high-impact systems - Building, owning, and operating systems to the highest levels of resilience and service - Mentoring junior team members and assisting in their technical development - Staying current with and spreading knowledge of the latest technologies - Leading and driving specific projects with opportunities to switch teams as the business evolves The role emphasizes versatility, exceptional leadership qualities, and enthusiasm for tackling problems across the full stack. You'll have real ownership with fewer blockers and work that makes a difference from day one. Checkout.com operates a hybrid model with three days per week in the office to support collaboration and connection. REQUIREMENTS: - Bachelor's or Master's degree in Computer Science, Engineering, or related field - Proficiency in C# .NET, Java, or Go, with strong understanding of software development principles in backend or full-stack environments - Great communication skills and ability to interact effectively with diverse stakeholders - Experience working in agile environments and delivering high-quality code within tight deadlines - Excellent problem-solving skills and ability to work independently and as part of a team - AI proficiency or AI curiosity; hunger to embrace latest technology to enhance productivity - Payments or financial knowledge is a plus but not required

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