Principal Full-Stack Developer, New York

Posted:
2/2/2026, 11:22:38 PM

Location(s):
New York, New York, United States ⋅ New York, United States

Experience Level(s):
Expert or higher ⋅ Senior

Field(s):
Software Engineering

Workplace Type:
On-site

Lab49 is an award-winning specialist consultancy that creates bespoke technology in partnership with the most important companies in finance.   We were founded in 2002 to bring Silicon Valley solutions to Wall Street’s door. Since then, we have worked on successive waves of technological change, including distributed computing, high-speed automation, enterprise UX and digital distribution (for which Lab49 was among the first significant practices established on Wall Street), DevOps, cloud and data science.   
 
Today, we are an established partner in financial markets, having delivered hundreds of projects for clients including all the world’s tier-one investment banks and many of the largest buy-side firms globally.   
 
Being part of Lab49 means bringing your drive and creativity into an environment where your contributions will make immediate impact. Engineers will work in cross functional teams, consulting directly with our clients, shaping not only technical solutions to business problems but delivering them into production. 
 
The Principal Full-Stack Developer will play a critical leadership role on a key project for a strategic Lab49 client. Working in a collaborative cross functional project team, with direct client-facing interactions, you will have an opportunity to lead a team of engineers and build modern digital products.
 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: 
•    Mid to Senior 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. 

Our total rewards program is designed to support employee well-being and professional growth.  We offer a competitive benefits package including a discretionary bonus, paid holidays, a 401(k), and comprehensive medical, dental, and vision coverage. Additional benefits include life insurance,  short and long-term disability, Commuter FSA, Family Building Benefits, and more. All benefits are subject to eligibility requirements.

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.