Principal Software Engineer

Principal Full-Stack Developer – Financial Markets

New York City (Midtown Manhattan) – Hybrid (3 days onsite)

$180,000 – $220,000 + Bonus + Benefits

Our client is a specialist technology consultancy partnering with some of the world’s leading financial institutions to build bespoke enterprise platforms, trading systems, and next-generation digital products.

They are currently looking for a Principal Full-Stack Developer to join a high-performing engineering team delivering modern trading and financial platforms within a front-office environment. This is a highly hands-on IC senior engineering role combining architecture, technical leadership, and full-stack development.

The position would suit someone who enjoys operating within fast-moving, technically complex enterprise environments and is comfortable working directly with senior stakeholders inside large financial services organisations.

What You’ll Be Doing

• Leading the design and development of modern full-stack trading and financial applications
• Building scalable front-end platforms using React / TypeScript
• Developing robust backend systems using Python or C#
• Architecting cloud-native solutions on AWS using modern infrastructure tooling
• Working closely with business stakeholders, product teams, and engineering leadership
• Driving technical direction, delivery quality, and engineering best practices
• Contributing hands-on across architecture, coding, and production delivery

What They’re Looking For

• 10+ years of software engineering experience
• Strong experience with Python or C#
• Strong React / TypeScript front-end development experience
• Deep AWS, Docker, Terraform, and distributed systems experience
• Experience designing scalable enterprise-grade applications
• Strong SQL and data architecture knowledge
• Previous experience operating within large-scale financial services, banking, capital markets, hedge fund, asset management, or similarly complex enterprise environments is essential
• Strong communication skills and ability to work directly with business stakeholders

Additional Information

• Hybrid working model with 3 days onsite in Manhattan
• Highly collaborative engineering culture
• Modern cloud-native tech stack
• Greenfield and highly scalable platform work
• Existing US work authorisation required

Compensation

• $180,000 – $220,000 base salary
• Bonus + full benefits package