Principal Full-Stack Developer, New York
Tech Stack
Job Description, Responsibilities & Requirements
About the Position
Principal Full-Stack Developer, New York
Lab49 is an award-winning specialist consultancy that creates bespoke technology in partnership with the most important companies in finance. Founded in 2002, we have been at the forefront of technological change, delivering hundreds of projects for clients including all the world’s tier-one investment banks and many of the largest buy-side firms globally.
Location: New York
Employment Type: Full-time / Hybrid
Date Posted: 2026-02-03
Responsibilities
- Partner with our client to lead the design and build of a structured products trading UI using modern web development technology and techniques.
- Design, document, and plan for the technical implementation and delivery of working software into production.
- Act as a hands-on engineer and architect to support ongoing project work. Lead and actively participate in projects, serving as a role model for project teams and collaborating with other practices to ensure successful outcomes.
- Partner with client counterparts and stakeholders to maintain and build relationships, maintaining a commercial approach. Develop strong relationships with clients as a strategic partner and technical advisor, contributing to expanding our footprint and securing follow-on work.
Requirements
- 10+ years of solid hands-on experience with Python or C# development.
- 5+ years of experience with React and modern front-end state management.
- Extensive experience architecting solutions on AWS, including Terraform and Docker.
- Proven track record operating effectively inside large, complex organizations (e.g., Tier-1 Investment Banks or Global Asset Managers).
- Deep understanding of SQL and data persistence strategies at scale.
- BS in Computer Science or equivalent experience.
- Expert-level knowledge of, and strong demonstrated interest in, global financial markets and financial products.
We Offer
- Competitive Salary: Mid to Senior level - $180,000 - $230,000
- Discretionary bonus based on company and individual performance
- Comprehensive benefits package including paid holidays, 401(k), medical, dental, and vision coverage
- Life insurance, short and long-term disability, Commuter FSA, Family Building Benefits, and more
About the Company
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.
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.
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