> Markdown version of [/jobs/ext/1941095-backend-software-engineer](https://www.wearedevelopers.com/jobs/ext/1941095-backend-software-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Backend Software Engineer - **Company:** Worldfirst - **Location:** Madrid, Spain - **Contract:** Permanent contract - **Skills:** Java (Programming Language), Computer Networks, Computer Literacy, Data Centers, Data Integrity, Payment Systems, Middleware, Spring-boot, Backend, Microservices - **Published:** August 5, 2026 - **Apply:** https://www.buscojobs.com.es/backend-software-engineer-en-madrid-ID-365588584 ## About the Role Technical Requirements Solid knowledge of Computer Science and Payment System, and familiar with the principles of Operating System (Unix/Linux), Computer Storage, Computer Networking and other related principles. Proficient in Java with experience in developing Spring Boot / Sofa Boot microservices, familiar with Ant International's commonly used middleware. The strong ability to resolve system problems, good communication skills and a sense of ownership. #J-*****-Ljbffr ## Description Overview Position at Ant Group Responsibilities Design and Implement Infrastructure Solutions: Architect and set up new Internet Data Centers (IDCs) to meet scalability and performance requirements.Analyze and Optimize Production Issues: Investigate and analyze real-world production cases, such as performance bottlenecks or system inefficiencies, to derive actionable insights and establish technical best practices.Contribute to the evolution of a highly available and resilient payment architecture.Incident Handling and Emergency Response: Conduct routine drills, develop contingency strategies, and participate in on-call rotations to ensure rapid response and resolution of production issues.Develop and execute comprehensive data protection plans that adhere to industry standards and compliance requirements, ensuring data integrity and security.Technical Requirements Solid knowledge of Computer Science and Payment System, and familiar with the principles of Operating System (Unix/Linux), Computer Storage, Computer Networking and other related principles.Proficient in Java with experience in developing Spring Boot / Sofa Boot microservices, familiar with Ant International's commonly used middleware.The strong ability to resolve system problems, good communication skills and a sense of ownership.#J-*****-Ljbffr ## Related Videos - [Migrating half a million users to a new payment service provider](https://www.wearedevelopers.com/videos/730-migrating-half-a-million-users-to-a-new-payment-service-provider) - [Developing the Backend with Stefan Lingler, CTO at Shpock](https://www.wearedevelopers.com/videos/100360-developing-the-backend-with-stefan-lingler-cto-at-shpock) - [Developer’s Perspective: Overview of the Tezos Blockchain Ecosystem](https://www.wearedevelopers.com/videos/237-developer-s-perspective-overview-of-the-tezos-blockchain-ecosystem) - [Full-stack role-based authorization in 45 minutes](https://www.wearedevelopers.com/videos/312-full-stack-role-based-authorization-in-45-minutes) - [Next Level Enterprise Architecture: Modular, Flexible, Scalable, Multichannel and AI-Ready?](https://www.wearedevelopers.com/videos/1017-next-level-enterprise-architecture-modular-flexible-scalable-multichannel-and-ai-ready) - [Meet Your New BFF: Backend to Frontend without the Duct Tape](https://www.wearedevelopers.com/videos/682-meet-your-new-bff-backend-to-frontend-without-the-duct-tape) ## Related Articles - [Top-Paying Tech Jobs (with Salaries)](https://www.wearedevelopers.com/magazine/372-top-paying-tech-jobs-with-salaries) - [Where to Find Entry-Level Software Engineering Jobs](https://www.wearedevelopers.com/magazine/397-where-to-find-entry-level-software-engineering-jobs) - [How Much Does a Software Engineer Make? Realistic Software Engineering Salaries](https://www.wearedevelopers.com/magazine/425-how-much-does-a-software-engineer-make-realistic-software-engineering-salaries) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [The Ultimate Software Engineer Career Path Guide for 2023](https://www.wearedevelopers.com/magazine/146-the-ultimate-software-engineer-career-path-guide-for-2023) - [Best Countries for Software Engineers](https://www.wearedevelopers.com/magazine/267-best-countries-for-software-engineers)