Principal Full-Stack Developer

ION

Principal Full-Stack Developer at Lab49 leading design and build of trading UI projects for financial institutions. Collaborating with clients and engineers in a dynamic environment.

Posted 4/30/2026full-timeNew York City • New York • 🇺🇸 United StatesLead💰 $180,000 - $220,000 per yearWebsite

Tech Stack

Tools & technologies

AWSDockerPythonReactSQLTerraform

About the role

Key responsibilities & impact

Partnering with our client to lead the design and build of a structured products trading UI using modern web development technology and techniques.
Responsible for managing engineering deliverables and relationships with key contributors to deliver great software.
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.

Requirements

What you’ll need

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.

Benefits

Comp & perks

Competitive benefits package including a discretionary bonus
Paid holidays
401(k)
Comprehensive medical, dental, and vision coverage
Life insurance
Short and long-term disability
Commuter FSA
Family Building Benefits
More benefits subject to eligibility requirements

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

PythonC#ReactAWSTerraformDockerSQLdata persistence strategiesweb developmentsoftware architecture

Soft Skills

leadershipcollaborationrelationship managementcommunicationproject managementproblem-solvingtechnical documentationhands-on engineeringrole modelingcommercial approach

Certifications

BS in Computer Science