Greymark builds algorithmic trading systems, financial data pipelines, and custom analytics platforms for traders and fintech companies.
End-to-end development for trading technology and financial software.
Custom trading bots, strategy automation, and live execution systems for equities, options, and crypto. Integrated with Alpaca, Tastytrade, Interactive Brokers, and more.
Automated financial data infrastructure — from ingestion to insights. Market data, sentiment analysis, and ML-based forecasting built to run reliably at scale.
Live portfolio performance dashboards and automated reporting tools. Multi-account aggregation, P&L tracking, and backtest result visualizations.
Full platforms for trading-related businesses — from strategy pages and user auth to payment processing and Dockerized cloud deployments.
Your applications hosted on dedicated hardware in our Secaucus, NJ data center. Containerized deployments managed with Docker and Traefik — no shared cloud, no cold starts, no surprise bills. We handle routing, SSL, uptime monitoring, and deployments so you can focus on building.
Greymark is led by a quantitative developer with hands-on experience building and running live trading systems. Every project draws from real-world experience — not theory.
From automated options strategies to full-stack fintech platforms, the work is grounded in what actually performs in production.
No surprises. Clear deliverables and milestones from day one.
We discuss your goals, current setup, and technical requirements. No commitment required.
You receive a clear proposal with deliverables, timeline, and fixed or hourly pricing. 30–50% deposit to begin.
Work is delivered in sprints with regular check-ins. You see progress continuously — no black boxes.
Full handoff with documentation. Optional retainer for ongoing maintenance, monitoring, and enhancements.
Hourly or fixed-price — whichever fits your project best.
Best for ongoing work, maintenance, or projects with evolving scope.
Best for clearly defined projects with specific deliverables and timelines.
Best for teams needing ongoing support after a project is delivered.
Dedicated container hosting on our on-prem hardware in Secaucus, NJ — low latency to NYC financial markets.
Have a project in mind? Send a message and I'll get back to you within one business day.