Backend Software Engineer, Golang - New York

Reflexivity • New York, NY

1d • Onsite

About The Position

You build backend systems that stay up when things get ugly.
You care about correctness, performance, and clarity over cleverness.
You want your code to power decisions involving real money.
If you have only worked on internal tools or low-impact services, this is not the role.
The Role, In Plain English
You will build the backend systems that power Reflexivity’s AI-driven investment platform.
This role exists because scale, data complexity, and latency matter deeply in finance.
You will work closely with AI and product teams to ship production-grade systems.

Requirements

• 5 plus years backend engineering experience
• Strong Golang experience in production systems
• Startup experience on a core product
• Experience working with data-heavy systems
• Comfortable using AI-assisted coding tools daily
• Fintech or investment domain exposure

Nice To Haves

• Experience supporting ML or LLM systems
• Distributed systems or low-latency data pipelines

Responsibilities

• Build and maintain Golang services that power core product workflows
• Design APIs and data pipelines used by AI and reasoning systems
• Improve system performance, reliability, and observability
• Review and challenge designs to keep systems simple and scalable
• Debug production issues with speed and discipline

Benefits

• Equity included
• Work on systems that directly affect investor outcomes
• Strong technical ownership
• High bar engineering culture without bureaucracy

What This Job Offers

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