Senior Fullstack Software Engineer

The role

You will work on the backend of Pigment's performance-critical SaaS platform, mostly in C# on .NET Core, with some frontend work in React. Your work helps process and aggregate large volumes of records in real time, and you will help shape the design and optimization of the proprietary formula and query engine.

What you will do

• Design and optimize the core formula and query engine
• Solve scalability and performance problems on high-volume, real-time datasets
• Build and maintain backend services on .NET Core, PostgreSQL, React and GCP
• Work with frontend engineers and product managers to deliver features
• Influence architecture decisions and test new ideas
• Take part in the full application lifecycle, including design, coding and keeping production running

Required qualifications

• Proven experience designing object-oriented software in languages such as C#, Java, C++, Golang, Rust, Python or Ruby
• Proven experience with JavaScript, CSS and a framework such as React, Vue.js or Angular
• Strong software engineering skills: turning functional requirements into simple designs and delivering the code
• Team spirit and a problem-solving attitude
• Fluent English (French is not required)

Benefits

• Competitive salary
• Equity
• Health insurance through Alan Blue, free for you and your family
• Trust and flexible working hours
• Brand new offices in Paris, London, New York and Toronto

Before you apply

• Background checks are part of the hiring process, with candidate consent and only where legally permitted; these may include employment history, education and, where permitted, criminal records

About the company

Pigment is an AI-powered business planning and performance management platform founded in 2019, with 700+ employees across several cities. It reports passing $100M in ARR in 2026 and raised a $250M Series E in October 2026.