Lead C#/.NET Developer, Boston

ION Group • Boston, MA

62d • $160,000 - $200,000

About The Position

As a Lead C#/.NET Developer at Lab49, you’ll play a key role in designing and building modern, service-oriented applications that power the world’s leading financial institutions. You’ll work across the full stack - from robust backend services built with cutting-edge C# to sleek, high-performance front-end interfaces using modern web technologies and frameworks. This is a hands-on, impactful role where you’ll collaborate with cross-functional teams to deliver innovative, scalable solutions that make a real difference in global financial markets.

Requirements

• 8+ years of experience developing commercial-grade software applications.
• Proven hands-on expertise in C#/.NET development, with a deep understanding of modern C# features and best practices.
• Strong SQL skills with at least 3+ years of experience working with complex, multi-tier architectures.
• Solid foundation in software design principles, development methodologies, and building scalable, maintainable systems.
• Bachelor’s degree in Computer Science or equivalent professional experience.

Nice To Haves

• Experience with modern front-end web technologies (e.g., React, Angular, or Blazor) is a plus.
• Knowledge of — or interest in — capital markets and financial systems is highly desirable.

Responsibilities

• Design and build high-performance, testable C#/.NET microservices leveraging the latest in cloud, containerization, and messaging technologies.
• Collaborate on software architecture and technical design decisions that shape scalable, enterprise-grade financial solutions.
• Contribute as part of an Agile/Scrum team, translating user stories into clean, maintainable code and delivering working software each sprint.
• Own your applications end-to-end — from development through deployment — and provide production support when needed to ensure reliability and performance.

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level
• Number of Employees: 1,001-5,000 employees