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

Fullstack Software Engineer · Mid · Full Time

Anywhere in France, Belgium, SpainEUR 70k – 120k3mo ago
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Role

What you'll do.

Alan is seeking a Fullstack Software Engineer to design and own their critical core billing platform, responsible for processing complex, multi-country transactions with high reliability and scalability across insurance services.

Responsibilities

  • Billing Engine Development: Build and maintain core billing engine processing thousands of daily transactions with high precision
  • System Design: Design modular, reusable billing primitives and abstractions that scale across multiple products and regions
  • Payment Integration: Integrate with various payment gateways, partner APIs, and internal systems
  • Workflow Automation: Automate billing schedules and workflows across multiple countries
  • System Reliability: Ensure system reliability, accuracy, and operational excellence

Qualifications

What we look for.

Technical

  • Backend Skills

    Strong backend and full-stack development experience

  • OOP Languages

    Proficiency in OOP languages like Python, Java, or C#

  • Complex Business Logic

    Ability to navigate and implement complex business logic

Education

  • Computer Science

    Bachelor's degree in Computer Science, Software Engineering, or related field preferred

Experience

  • Software Engineering

    Proven experience in designing scalable, resilient platform systems

  • Billing Systems

    Prior experience with financial or billing system development is a plus

Skills

Required

  • Backend Development

    Strong experience in designing and implementing backend systems

  • Python

    Proficiency in Python and Flask framework

  • OOP

    Expert-level object-oriented programming skills

  • Distributed Systems

    Understanding of scalable, resilient platform design

Preferred

  • React

    Nice to have

    Experience with React and React Native

  • PostgreSQL

    Nice to have

    Knowledge of PostgreSQL database management

  • Payment Integrations

    Nice to have

    Experience with payment gateway and financial system integrations

Tech stack

Languages

PythonJavaScript

Frameworks

FlaskReactReact Native

Databases

PostgreSQL

Other

Payment Gateway Integrations

Compensation

Pay and benefits.

Base·EUR 70,000 – 120,000

Benefits

  • Equity Package

    Fair rewards and equity compensation

  • Flexible Work

    Remote and office flexible options

  • Equipment

    Top-tier equipment including MacBook Pro, monitor, and noise-canceling headphones

  • Healthcare

    Comprehensive healthcare coverage for employee, children, and partners

  • Professional Development

    Training budget for conferences, courses, and books

  • Personal Growth

    Coaching and support for personal development

  • Parental Leave

    Extended parental leave for all parents

Process

Interview steps.

  1. 01

    Initial Screening

    Review of resume and initial phone/video call with recruiting team

  2. 02

    Technical Assessment

    Coding challenge or technical assessment related to backend and system design

  3. 03

    Technical Interviews

    Multiple rounds of in-depth technical interviews focusing on system design, coding skills, and problem-solving

  4. 04

    Cultural Fit Interview

    Interview to assess alignment with company values and team dynamics

  5. 05

    Final Interview

    Meeting with team lead or hiring manager to discuss role specifics and potential impact

Full posting

Original listing.

Health can’t wait.

Not for symptoms to get worse. Not for a six‑month appointment. Not for a system to catch up. But that’s exactly how healthcare works today. You wait, until you can’t.

Alan exists to end the wait.

Health is a universal right, and we believe this right can only become real when it’s coupled with prevention. We need to stop treating health as something we repair and start treating it as something we build, every day. It’s not solely a question of willpower. It’s the healthcare system itself that needs to work for everyone, in a sustainable way.

So we are building the new standard in prevention insurance. Alan is the first company that integrates insurance, prevention, and care into a single, acclaimed user experience.

We are on an incredible journey to build a global leading company, with a unique culture. We already partner with 40K+ companies of all sizes, serving more than 1M+ members, and have reached €800M+ in ARR.

Prevention as the new norm. That's what we're building with our team of 800+ people. If it speaks to you: we're hiring across France, Spain, Belgium, and Canada. And beyond.

⭐ Design and own our billing platform

At Alan, billing is a critical platform that powers all of our services across multiples countries. We turn complex rules, multi-country regulations, and high transaction volumes into scalable, reliable systems.

As a Software Engineer on this team, you will:

  • Build the core billing engine: process thousands of transactions daily with precision and reliability.

  • Design modular, reusable billing primitives and abstractions that scale across products and regions.

  • Integrate with payment gateways, partner APIs, and internal systems.

  • Automate billing schedules and workflows across multiple countries.

  • Ensure system reliability, accuracy, and operational excellence.

  • Collaborate with product, design, and operations to create a unified platform.

Why this role is special:

  • Design Alan’s core financial systems and global expansion.

  • Work on complex distributed systems powering thousands of transactions daily.

  • Influence platform design, architecture, and future scalability.

  • Be part of a team that values engineering craftsmanship and continuous improvement.

  • Work in an environment where your ideas, designs, and decisions drive tangible outcomes.

🛠 Your playground

  • Stack: Python/Flask, React, React Native, PostgreSQL.

  • What you’ll do: ship scalable, reliable systems and build the backbone of Alan’s billing operations.

  • Impact: your work directly unlocks new services, countries, and exciting deals. It then supports their reliable operation.

👥 Who we’re looking for

  • We are looking for software engineers of all experience levels, ideally with 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#).

  • Fluent in English (French is a plus but not required).

  • Curious, self-starting, humble, collaborative, and eager to grow.

🙌 Perks & Benefits

  • Fair rewards & equity packages.

  • Flexible office & remote options.

  • Top-tier equipment: MacBook Pro, monitor, noise-canceling headphones.

  • Flexible vacation & hours.

  • Comprehensive healthcare for you, children, and partners.

  • Transport support and coaching for personal growth.

  • Training budget for conferences, courses, books.

  • Extended parental leave for all parents.

🔄 Recruitment note

🌟 We hire people, not roles. Don’t worry if you don’t check every box - high potential and curiosity matter most. We may even suggest another team if we see a better fit.

🔖 Learn more About Alan and on our Career pages, Medium, blog and Glassdoor page.

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