Software Architect (C# / .NET) — Trading Technology - Systematic Equities - Execution Monitoring & Control - Greenfield Platform - Desk-Facing - Up to $1m TC jobs in United States
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Mondrian Alpha · 11 hours ago

Software Architect (C# / .NET) — Trading Technology - Systematic Equities - Execution Monitoring & Control - Greenfield Platform - Desk-Facing - Up to $1m TC

positionNYC Metro Area
timeFull-time
remoteOnsite
seniorityMid, Senior Level

Mondrian Alpha is one of the world’s leading quantitative investment firms focusing on systematic equities. They are seeking a hands-on Software Architect to lead the design and build of a greenfield execution monitoring and control platform that will be used directly by traders in live markets.

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H1B Sponsor Likelynote
Hiring Manager
Moses Lynn
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Responsibilities

Architect and build greenfield systems for execution monitoring and platform control
Design and develop high-performance backend services in C# / .NET (primary language)
Define service boundaries, APIs, data flow, eventing, and performance strategy
Contribute to desk-facing UI (JavaScript / TypeScript / React preferred), ensuring clean architecture and usability
Own production readiness: reliability, monitoring, logging, alerting, graceful degradation
Translate real desk workflows into robust, scalable technical solutions
Lead technical decision-making: architecture reviews, design discussions, implementation standards
Mentor engineers, review code, and raise the technical bar across the team
Work across distributed systems and data-intensive workloads where throughput and latency matter

Qualification

C#.NETSystem architectureDistributed systemsPerformance optimisationReal-time systemsJavaScriptTypeScriptReactClear communication

Required

Strong experience delivering production-grade systems in C# / .NET
Proven system architecture and design expertise (distributed systems, scalability, failure modes)
Comfortable owning the full lifecycle: architecture → build → deployment → production
Performance-aware mindset (profiling, concurrency, async patterns, efficient data handling)
Able to contribute to frontend development
Clear communicator, comfortable working directly with trading stakeholders

Preferred

Experience with real-time or high-throughput systems
Exposure to trading, execution platforms, or systematic environments
Familiarity with modern engineering practices: CI/CD, automated testing, observability
Experience working with medium-to-large data volumes and performance optimisation

Company

Mondrian Alpha

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Mondrian Alpha takes pride in providing innovative human capital solutions, market intelligence and competitor analysis to our global buy side client base.
dateFounded in 2010
location
London, England, GBR
people-size51-200 employees
web-link
https://www.mondrian-alpha.com

H1B Sponsorship

Mondrian Alpha has a track record of offering H1B sponsorships. Please note that this does not guarantee sponsorship for this specific role. Below presents additional info for your reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (1)

Funding

Current Stage
Growth Stage

Leadership Team

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Craig Courtman
Partner
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Company data provided by crunchbase