Trading systems,
engineered for production.
Greymark is a quantitative engineering practice. We build and operate execution systems, data pipelines, and trading infrastructure for trading firms and fintech teams.
What we build.
Execution systems, the data they depend on, and the tools and platforms around them.
Algorithmic Trading Systems
Strategy automation and live execution for equities and options, integrated directly with Alpaca, Tastytrade, and Interactive Brokers.
- Strategy backtesting and optimization, with Sharpe, drawdown, and win-rate analysis
- Options structures: iron condors, iron butterflies, spreads
- Real-time signal processing and order execution
Data Pipelines & Analytics
Scheduled pipelines that fetch, clean, and store the data trading decisions depend on.
- Market data ingestion and storage: bars, options chains, VIX
- News and sentiment analysis pipelines
- Time-series forecasting (Nixtla statsforecast)
- Scheduled automation via cron, Node-RED, and cloud runners
Dashboards & Reporting
Live monitoring and automated reporting, built directly on broker APIs.
- Real-time P&L, position, and drawdown tracking
- Multi-account aggregation and comparison
- Automated HTML/PDF report generation
- Backtest result visualization
Fintech Web Development
Platforms for trading businesses: accounts, payments, and strategy publishing.
- Trading platforms and strategy leaderboards
- User authentication (Supabase / PostgreSQL)
- Stripe payment integration
- Docker + nginx cloud deployment
Infrastructure built for production.
We host and manage applications on dedicated hardware in Secaucus, NJ, with low-latency connectivity to NYC financial markets. No shared cloud, no cold starts, no surprise bills.
- Docker container orchestration on dedicated hardware
- Traefik reverse proxy with automatic SSL certificate management
- Custom domain routing for multiple applications on one host
- Uptime monitoring and alerting
- Zero-downtime deployments and rollbacks
From scope to production.
Defined deliverables and milestones, from the first call to handoff.
Introductory Call
We discuss your goals, current setup, and technical requirements. No commitment required.
Scoped Proposal
We send a proposal setting out deliverables, milestones, timeline, and fee.
Development
We deliver in sprints with regular check-ins. Progress is visible throughout — no black boxes.
Delivery & Support
Full handoff with documentation, and an optional retainer for monitoring, maintenance, and improvements.
How engagements are structured.
Every engagement is scoped and quoted individually, with deliverables, milestones, and terms set out in the proposal before work begins.
Discovery
A scoped diagnostic of your current systems and requirements. Delivers a technical assessment and an implementation proposal.
Project
A fixed fee against the deliverables defined in the proposal, delivered in milestones.
Retainer
Ongoing ownership after delivery: system monitoring, monthly updates and improvements, priority response, and strategy performance reviews.
Managed Infrastructure
Dedicated container hosting on our hardware in Secaucus, NJ, priced by the footprint you run. See infrastructure.
Built for production, not prototypes.
Greymark brings a production-first approach to quantitative engineering. We build execution systems, market-data pipelines, broker-integrated reporting, and the platforms trading businesses depend on.
From architecture through deployment and ongoing support, the work is designed around the realities of operating financial systems: reliability, observability, maintainability, and operational clarity.
- Principal
- Daniel Savage
- Brokers & Venues
- Data & Modelling
- Platform & Infrastructure
Start a conversation.
Tell us what you're building, improving, or operating. We'll reply within one business day to discuss the requirements and next steps.