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Principal Full Stack Developer, New York

ION· Lab49 – Software Engineering
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Hybrid (New York, NY)$180k - $230kFull-timePosted 8mo ago

About the role

Lab49 is seeking a Principal Full-Stack Developer to lead a key project for a global asset management client. The role combines hands-on development with leadership, client interaction, and architectural responsibilities within a hybrid, full-time engagement in New York.

Responsibilities

  • - Partner with our client to lead the design and build of a structured products trading platform using modern development technology and techniques. You will be responsible for managing engineering deliverables, and the relationships with other 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. Develop strong relationships with clients as a strategic partner and technical advisor, contributing to expanding our footprint and securing follow-on work.

Qualifications

  • - 10+ years of solid hands-on experience with Python or C# development.
  • - Hands-on 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.

Skills

Required:Python or C#ReactAWSTerraformDockerSQL

Benefits

  • - discretionary bonus (potential)
  • Healthy 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.
Last updated Oct 21, 2026. Interested? Apply on the company site.

About ION

Reinventing the way business is done through automation technology

ION financial software improves decision making, simplifies complicated processes and empowers you by providing the right tools.

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