Fullstack Software Engineer (x/f/m) - Global Billing Platform

TL;DR

Fullstack Software Engineer (Python/React): Building the core billing engine processing thousands of transactions daily with an accent on modular primitives and integrations across products and regions. Focus on designing scalable abstractions, automating workflows, and ensuring invoice accuracy and reliability under high volume.

Location: Anywhere in France, Belgium, Spain. Flexible office & remote options.

Company

Vertically integrated health partner uniting insurance and smart healthcare delivery into one seamless system for millions of members across France, Spain, Belgium, and Canada.

What you will do

• Build the core billing engine processing thousands of transactions with precision.
• Design modular, reusable billing primitives and abstractions scaling across products and regions.
• Integrate with internal systems and external payment platforms.
• Automate workflows and billing schedules at scale.
• Ensure invoices are accurate, reliable, and easy to manage.
• Collaborate with product, design, and operations teams.

Requirements

• Fluent in English (French is a plus).
• Backend / full-stack experience.
• Passionate about navigating complex business logic and system dependencies.
• Experienced with scalable, resilient platform design.
• Well-versed in OOP languages (Python, Java, C#).
• Curious, self-starting, humble, collaborative, eager to grow.

Culture & Benefits

• Mission-driven with leadership principles: Mission is the Boss, Distributed Ownership, Radical Transparency, Always Growing.
• Fair rewards & equity packages.
• Top-tier equipment: MacBook Pro, monitor, noise-canceling headphones.
• Flexible vacation & hours.
• Comprehensive healthcare for you, children, and partners.
• Transport support, coaching for personal growth, training budget for conferences and courses.
• Extended parental leave for all parents.

Hiring process

• We hire people, not roles; high potential and curiosity matter most.
• May suggest another team if better fit.