Lead C#​/.NET Developer, Boston

Overview

As a Lead C#/.NET Developer at Lab
49, 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.

• 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.

• 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.
• 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.

The base salary range for this role is $160,000 - $200,000. However, the base salary range may vary depending on the individual's job-related knowledge, skills and experience. Placement within the range is based on relevant experience and skills for the role and level. Base salary is one component of total compensation, and employees may be eligible for a discretionary bonus based on company and individual performance.

Salary disclosure as required by applicable law when hiring in New York.

Lab
49/ION is committed to maintaining a supportive and inclusive environment for people with diverse backgrounds and experiences. We respect the varied identities, abilities, cultures, and traditions of the individuals who comprise our organization and recognize the value that different backgrounds and points of view bring to our business. Lab
49/ION adheres to an equal employment opportunity policy that prohibits discriminatory practices or harassment against applicants or employees based on any legally impermissible factor.

Lab
49/ION is an equal opportunity employer. We encourage applications from all qualified individuals regardless of race, color, religion, sex, national origin, age, disability, or any other status protected by law.