Senior Software Engineer – Full Stack (C#/React.js)

Doran Jones Inc. • New York, NY

2d • $70,000 - $200,000 • Hybrid

About The Position

We are seeking a Senior Software Engineer to join a high-visibility trading and compliance technology team supporting an in-house Trade Control platform. This system sits upstream of the OMS and plays a critical role in pre-trade compliance, controls, and stability across trading workflows.

This is a hands-on, full-stack role with a strong emphasis on React front-end development, paired with backend services in .NET/C# and Python running on AWS-based microservices architecture.

(Hybrid – 3 days onsite)

Requirements

• 6–8 years of professional software engineering experience
• Strong hands-on experience with C#/.NET backend development
• Heavy front-end experience with React (modern frameworks, state management, performance optimization)
• Developed and integrated APIs using GraphQL
• Experience building microservice architectures, ideally using Python for services
• Strong experience working in AWS cloud environments
• Experience supporting high-availability production systems
• Ability to independently own issues and drive resolutions
• Strong communication skills and experience working with offshore teams

Nice To Haves

• Experience within trading systems, compliance platforms, or financial services environments
• Exposure to OMS or pre-trade control systems
• Familiarity with distributed systems and cloud-native best practices
• Agile development environments

Responsibilities

• Build and enhance a front-end heavy React application supporting pre-trade compliance and control workflows
• Develop and maintain backend services using .NET/C# and Python within a microservices architecture
• Designed, deployed, and maintained scalable cloud infrastructure using AWS services
• Improve platform stability, performance, and scalability while delivering new features
• Work within AWS infrastructure across cloud-native services and deployments
• Own production support and issue resolution during U.S. hours, coordinating closely with offshore teams
• Collaborate with trading, compliance, and product stakeholders in a high-visibility environment
• Participate in design discussions and contribute to technical improvements across the platform

Benefits

• comprehensive health care coverage
• disability benefits
• a 401(k) match
• life insurance
• paid personal days
• paid holidays
• paid time off

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level
• Education Level: No Education Listed