PayXpert is a pioneer in omnichannel payments and a subsidiary of the Société Générale group. We serve a diverse array of local and international brands both online and in-store, spanning various sectors. At the heart of our vision is the creation of a payment ecosystem that fosters an inclusive commerce experience for all.
We have developed services that focus on revenue optimisation, performance enhancement, fraud prevention, and seamless payment orchestration. Our expertise extends to cross-border payments and alternative payment methods such as Alipay+ and WeChat Pay. Furthermore, our solutions are designed with accessibility in mind, offering features that cater to the visually impaired, ensuring everyone can engage in the modern commerce landscape.
The Senior Backend Developer is responsible for designing, building and evolving the backend services that support PayXpert's Payment Gateway, Secure Store and other security‑sensitive components within the core payments platform.




The role spans mainly on the PHP‑based e‑commerce gateway but also on the Java/Kotlin payments platform components, working across these stacks to deliver and maintain secure transaction services.
The role operates with advanced technical expertise and high autonomy, developing complex backend features, maintaining service integrity and ensuring the protection of sensitive transactional data within a regulated and compliance‑driven environment.
Key Responsibilities

Design, develop, and maintain payment-oriented backend services across both PHP (e‑commerce gateway) and Java/Kotlin (core payments platform) codebases
Contribute to core payment backend applications with a strong focus on security-sensitive transaction flows.
Identify gaps or limitations in core backend services and propose technical solutions aligned with business needs.
Analyze business and technical requirements to assess feasibility and implementation impact.
Own backend components end-to-end, from design and implementatio

📌 Senior Backend Developer (España)
🏢 Payxpert
📍 España