Senior Full-Stack Developer, New York

Ion Group
New York, NY

LAB49 seeking an experienced Full-Stack Developer with a primary focus on front-end development ( React ) and substantial expertise in back-end technologies such as C#/.NET or Python . 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 Full-Stack 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. 

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Required Skills and Experience:
  • 8+ years of commercial-grade web/front-end development experience.  
  • Strong experience in modern JavaScript, ideally TypeScript, building web applications with React. 
  • 5+ years of solid hands-on experience in either functional coding in Python or C#/.NET development.
  • Collaborate with designers and other partners to provide input on design & wireframing.  
  • Experience with Agile development methodologies.  
  • 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)

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If you are ready to take on challenging projects and contribute to innovative solutions in a dynamic environment, we would love to hear from you!

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.

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 Hybrid Work Model 

At Lab49, we embrace a hybrid work model, offering you the flexibility to work from the office or remotely. We expect our Lab49ers to average 2-3 days per week in person and this could be at our midtown office in NYC or at a client site. We believe that both the flexibility and in person connection to each other and our clients build a collaborative culture and the opportunity to accelerate growth and innovation. 

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.

Posted 2025-11-25

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