Senior Backend Software Engineer

The Opportunity:

As a Backend Software Engineer you’ll work on performance-critical systems that process and aggregate millions of records in real time, directly enabling our clients to make better, faster decisions.

Here’s why this is an exciting opportunity:

Work on the Core Engine: Contribute to the design and optimization of our proprietary formula and query engine.

Solve Complex Problems: Tackle scalability and performance challenges across high-volume, real-time datasets.

Shape the Product: Collaborate closely with frontend engineers and product managers to deliver impactful features.

Own the Stack: Build and maintain backend services using modern technologies like .NET Core, PostgreSQL, and GCP.

Drive Innovation: Influence architecture decisions, test new ideas, and continuously improve performance and reliability.

If you enjoy solving hard problems and building systems that scale, this is the perfect place to grow your career!

Who You Are:

We value strong software engineering skills and a problem-solving mindset. You thrive on turning complex requirements into elegant, maintainable solutions and are eager to deliver value to end users.

In any case, you have:

- Experience working as a software engineer on production systems.

- Proven ability to design object-oriented software with languages such as C#, Java, C++, Golang, Rust, Python, or Ruby.

- A collaborative mindset and strong communication skills.

- A desire to deeply understand how the product works and the value it brings to users.

- A good dose of humility and the willingness to grow (no matter your seniority!).

- A fluent level in English (French is not required).

Your Responsibilities:

- Design and build the core computation engine that powers our business planning platform.

- Collaborate with frontend engineers, product managers, and designers to define, develop, and deliver features that bring value to users.

- Optimize performance and scalability of systems processing large-scale data in real time.

- Continuously monitor and improve the reliability, maintainability, and test coverage of backend services.

- Contribute to technical architecture and decision-making across the backend stack.

- Champion clean code, great documentation, and modern engineering best practices.

Current Projects You could Work On :

Computation Engine: Scaling and optimizing our formula engine to support increasingly complex use cases and larger datasets.

Performance Optimization: Profiling and improving the speed of real-time queries and calculations.

Infrastructure Improvements: Evolving our backend platform for reliability, observability, and developer efficiency.

Cross-Team Collaboration: Working closely with frontend teams to ensure smooth API integration and a great user experience.

Technical Challenges:

- Handling real-time computation and aggregation over millions of records.

- Ensuring system performance while scaling to meet enterprise-grade demands.

- Balancing feature delivery with code quality and technical debt management.

- Driving architectural improvements to keep our platform fast, reliable, and future-ready.

Our Tech Stack:

Languages & Frameworks: C# on .NET Core (Linux)

Database: PostgreSQL

Infrastructure: Google Cloud Platform, Docker, Kubernetes, Terraform

Messaging & CI/CD: RabbitMQ, Circle CI

Frontend: React (TypeScript) - close collaboration with frontend teams expected!

What You’ll Get:

Competitive salary

Equity

Comprehensive health insurance with Alan Blue (free for you and your family )

Trust and flexible working hours

Remote-friendly policy

Brand new offices in Paris, London, New York, and Toronto