Doran Jones Inc

Lead Software Engineer (C#/React)

Doran Jones Inc • US
PythonC# Hybrid
We are seeking an Engineering Lead to drive the redesign of an Order Management System (OMS) for a top-tier financial services organization. You will help lead the full lifecycle of the rewrite from strategy and architecture to delivery and continuous improvement.

This is a hands-on leadership role requiring both technical depth and strong stakeholder management.

You will partner with trading, risk, and technology teams to deliver a scalable, resilient, and future-ready platform.

*Not open to C2C or external agencies.

Responsibilities

  • Lead architecture, design, and delivery of C#, Python, and React-based solutions supporting high-volume trading.
  • Ensure performance, scalability, resilience, reliability, and regulatory compliance across cloud environments (AWS/Azure).
  • Collaborate with business and operations teams to translate requirements into technical solutions.
  • Mentor engineers, establish best practices, and build a culture of technical excellence.
  • Oversee delivery execution: backlog management, sprint planning, and reporting.
  • Required Experience

  • 12+ years of software engineering experience in financial services environments, with 5–8+ years in leadership.
  • Experience building and modernizing trading platforms or financial systems (OMS, EMS, risk, or similar)
  • Strong hands-on experience with C# and Python in production environments
  • Front-end development experience using React for complex, data-driven applications
  • Full-stack architecture experience across APIs, services, and modern web applications
  • Cloud platform experience (AWS and/or Azure)
  • Proven track record of modernizing legacy systems into scalable, distributed platforms.
  • Excellent leadership, communication, and stakeholder management skills.
  • Preferred Experience

  • Exposure to fixed income or multi-asset trading workflows.
  • Familiarity with high-throughput, low-latency system design.
  • Exposure to messaging systems (e.g., Kafka) and real-time data feeds.