ION · 4 hours ago
Principal React/.NET Developer, New York
New York
Full-time
Onsite
Lead/Staff
$180K/yr - $220K/yr
10+ years expION Group is seeking an experienced Principal React/.NET Developer at Lab49, focusing on UI technologies to drive transformative change for Financial Services clients. The role involves tackling complex projects in an Agile environment and leveraging front-end frameworks to design innovative technology solutions.
AccountingFinanceSoftwareAsset ManagementFinancial Services
Responsibilities
Collaborate with designers and other partners to provide input on design & wireframing
Experience with Agile development methodologies
Qualification
Required
10+ years of commercial-grade web development experience
5+ years of experience in modern JavaScript, ideally TypeScript, building web applications with React
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
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
Preferred
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)
Benefits
Discretionary bonus
Paid holidays
401(k)
Comprehensive medical, dental, and vision coverage
Life insurance
Short and long-term disability
Commuter FSA
Family Building Benefits
Company
ION
ION Group provides solutions for electronic trading, position management, pricing, risk management, and downstream processing for clients.
10001+ employees
H1B Sponsorship
ION has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (2)
2024 (1)
2022 (2)
2021 (4)
Funding
Current Stage
Late StageLeadership Team
Rich Grossi
Chief Executive Officer, ION Corporates
Sandra Timmoney
Chief of Staff to the CEO, Corporates
Recent News
2025-12-19
2025-12-04
2025-12-03
Company data provided by crunchbase