Senior Backend Developer (Payments)

About You We are looking for a Mid/Senior Developer who is highly skilled, reliable, and excited about building payment solutions to join our payments engineering team in Kuala Lumpur. The best candidate will be someone who thrives in a fast-paced, highly collaborative, and exceptionally dynamic setting and is excited to design and maintain scalable backend services that process high-volume payment transactions for game developers worldwide. Strong expertise in PHP and Go is essential, along with deep knowledge of microservices architecture, database optimization, and high-load systems. The ability to deliver reliable, well-documented solutions while collaborating effectively with product, engineering, and partner teams will be key to your success in this role. If you're passionate about building robust payment infrastructure and love empowering the gaming industry with seamless commerce solutions, we would love to hear from you! About Us Xsolla is a global commerce company with robust tools and services to help developers solve the inherent challenges of the video game industry. From indie to AAA, companies partner with Xsolla to help them fund, distribute, market, and monetize their games. Grounded in the belief in the future of video games, Xsolla is resolute in the mission to bring opportunities together, and continually make new resources available to creators. Headquartered and incorporated in Los Angeles, California, Xsolla operates as the merchant of record and has helped over 1,500+ game developers to reach more players and grow their businesses around the world. With more paths to profits and ways to win, developers have all the things needed to enjoy the game. For more information, visit xsolla.com . Responsibilities Design, build, and maintain backend services and APIs using PHP and Go, ensuring scalability, reliability, and high performance .Develop new microservices and enhance existing systems to support large-scale integrations and high-load payment flows.Participate in code reviews and maintain high development standards through collaborative feedback and best practices.Work closely with engineering, product, and partner teams to deliver high-quality solutions on scheduleContribute to system monitoring using tools such as Grafana, Kibana, and ELK to ensure stability and optimal performanceDocuments technical specifications, system architecture, and new functionalities for transparency and maintainabilityParticipate in Kanban ceremonies and maintain efficient communication with cross-functional teams. Qualifications & Skills Proven experience in backend development with strong proficiency in PHP and GoLang.Solid understanding of object-oriented programming (OOP), software design patterns, and decomposition principles.Experience with microservices architecture and scalable backend systems.Strong knowledge of SQL and database design, including optimization for large datasets.Familiarity with Postman, GitLab, console and other development tools.Experience using monitoring and testing tools such as Grafana, Kibana, DataDog and ELK.Ability to work independently on complex technical tasks and deliver high-quality results within deadlines.Strong communication skills and ability to collaborate effectively with cross-functional teams. Nice to Have Experience with high-load systems and event-driven architectures.Familiarity with CI/CD tools (GitLab CI).Background in frontend development or working with single-page applications (SPAs).Hands-on experience using AI-powered development tools to enhance productivity. BENEFITS: Convenient work tools Latest Mac workplaces + additional hardware to make you more effective at work Google Chat, Gmail, Google Drive, Confluence, Jira, GitLab Professional growth Free trainings and participation in specialized conferences Rich knowledge exchange within the company More perks Health insurance (Medical, dental and optical)- Employee and dependants Flexible hours: organize your day according to your needs and sprint & teamwork demands No dress code Comfortable and new office environment The duties of this position may change from time to time so the individual and organization can achieve their results. This job description is intended to describe the general level of work being performed. It is not intended to be all-inclusive. By submitting your application, you consent to Xsolla conducting background checks, where permitted by law, after the final interview stage. All checks will comply with local regulations, and your information will be handled confidentially. Xsolla KL Sdn Bhd takes your privacy very seriously, and will not sell or externally distribute any data received during the hiring process. Pursuant to the Personal Data Protection Act 2010 (“PDPA”), Xsolla KL Sdn Bhd is mindful and committed to the protection of your personal information and your privacy. Please direct any inquiries regarding your data privacy to [email protected] . For more vacancies: https://xsolla.com/careers We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.