Fullstack Software Engineer - PI

Senior Software Engineer, équipe PI (Product Integration)

HiPay is a global payment partner that leverages data to deliver tailored solutions for merchants worldwide. In this role you will work at the heart of a modular ecosystem, transforming the technical complexity of payment into a suite of simple, visual, and high‑performance tools.

Your responsibilities span four main pillars:

• Design and develop high‑quality user interfaces (React) such as the HiPay payment page, balancing security and ease of use.
• Build and maintain robust, scalable APIs that support high‑volume financial transactions and stock synchronization.
• Optimize code for conversion, ensuring measurable business impact.
• Take ownership of existing applications and contribute to overall architecture and technical planning.
• Develop, test, and maintain reusable, clean, well‑documented components.
• Propose and implement constructive improvements in architecture, tooling, and development processes.
• Conduct code reviews and pair programming sessions.
• Participate actively in agile ceremonies and provide visibility on ongoing work.
• Collaborate on future product enhancements and technical discussions.
• Provide accurate workload estimates alongside the team.
• Contribute to collective intelligence and maintain a best‑practice watch.

Qualifications

• Full‑stack experience with Node.js, TypeScript, and React.js; a strong focus on clean code, robustness, and performance.
• Hands‑on experience with AWS or GCP, managed through Terraform (Infrastructure as Code).
• Advanced skills in scalable architecture design and SQL.
• Proficiency in an agile environment, adept at resolving complex bugs and prioritizing work.
• Natural leadership and pedagogical abilities; ability to propose improvements and mentor teammates.
• Collaborative mindset, autonomy, curiosity, and a willingness to share knowledge across teams.
• Additional strengths: CI/CD mastery, experience with Shopify GraphQL or PHP, and sensitivity to AI tools.