Principal .NET Developer, New York
ION Group
New York, United States
November 23, 2025
Apply NowPrincipal .NET Developer, New York
New York
Lab49 – Software Engineering /
Full-time /
On-site
Lab49 seeking an experienced Principal .NET Developer with a primary focus in back-end technologies such as C#/.NET. This is a unique opportunity to elevate your career and gain unparalleled experience in one of the world's most dynamic business hubs.
As a Principal .NET Developer at Lab49, you will be at the forefront of driving transformative change for our esteemed Financial Services clients. Operating within an Agile environment, you will tackle complex and challenging projects, leveraging your robust experience in front-end frameworks to design and construct the next generation of technology solutions.
Required Skills and Experience:
- 10+ years of commercial-grade web development experience.
- 5+ years of solid hands-on experience in either functional coding in .NET development.
- Collaborate with designers and other partners to provide input on design & wireframing.
- Experience with Agile development methodologies.
- Experience in modern JavaScript, ideally TypeScript, building web applications with React.
- Strong interpersonal and organizational skills.
- Knowledge of, and strong demonstrated interest in, global financial markets and financial products is a strong plus.
- Bachelor’s or Master's degree in Computer Science, Engineering, Physics, Math, or related work experience.
Nice to Have:
- Experience working in a microservices setup
- Familiarity working with Material UI, Terraform, Entity Framework, and SQL queries
- Cloud experience (AWS preferred)
- Exposure to and experience with CI/CD tools (TeamCity and Jenkins preferred)
Why Lab49?
Lab49 is an established partner for most financial institutions on Wall Street. You will gain exposure into a variety of environments, business domains, technologies, and people. Your ability to bring drive and creativity to the role will be the key component to success at Lab49. The broad and intense exposure to a variety of challenges accelerates your career growth, and Lab49’s structure is designed to enable you to learn and grow as an engineer and consultant.
The base salary range is:
• Senior to Leadership level - $180,000 - $220,000
Base salary is only one component of our total compensation package. Employees may be eligible for a discretionary bonus, which is determined upon company and individual performance.
Salary range disclosure as required by S9427A when hiring in New York.
Lab49/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.
Lab49/ION adheres to an equal employment opportunity policy that prohibits discriminatory practices or harassment against applicants or employees based on any legally impermissible factor.
We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.