M Street Systems

Research & infrastructure for proprietary trading

M Street Systems is a trading desk that builds and operates execution, connectivity, machine learning, and risk management systems.

M Street trades its own capital

Contact Compliance

public surface / proprietary internals withheld

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01 global reach
02 petabytes of data
03 built in-house, from the ground up
04 novel transformer based ML
05 strict compliance

Systems thesis

The public surface is built as an annotated operating note rather than a campaign layer.

Financial markets are fascinating

How do you interpret petabytes of data, engineer hardware that can keep up, manage ML pipelines, nail compliance. Financial markets are living, breathing systems that present one of the hardest engineering problems around M Street Systems tackels these problems with rigor, discipline and excitement. Most of our tooling is build from the ground up. We hold some trades for miliseconds, others for years. We think about investing + liquidity provision as being separate.

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Read surface

Execution, connectivity, and controls are described as one system.
Disclosure posture is explicit about what is omitted.
The site routes venues and compliance teams to the right path quickly.

Operating principles

Text leads. Graphics support the reading.

Public language follows system boundaries.

Each principle describes how M Street wants to be read by venues, counterparties, and compliance teams: exact, controlled, and not overstated.

Execution

Routing is treated as a control problem. Precision matters more than display.

Connectivity

Interfaces are maintained as production infrastructure with explicit failure states and recovery paths.

Controls

Operational limits, review points, and recordkeeping are part of the system surface, not afterthoughts.

Discipline

M Street stays concise in public and exact in process. External statements are kept within approved bounds.

Inquiry routing

The site points operational readers to the right surface without noise.

For giving ideas

Giving Pledge and idea path.

M Street donates 10% of revenue each month and reviews ideas for registered NPOs that may be underfunded or overlooked.

Open giving pledge page

For compliance and conduct

Controls, disclosures, and inquiry path.

Draft notes are clearly marked. Disclosure maintenance uses semantic details blocks and remains easy to revise as legal wording is approved.

Open compliance page

Careers

Selective by design, not broad by default.

We are not hiring broadly.

We are hiring narrowly and somewhat suspiciously.

Required baseline: unreasonably dedicated, technically sharp, funny under pressure, and consistently kind.

Open careers page

Hiring posture: Narrow, not broad
Baseline: Dedication, sharpness, humor, kindness
Signal: Show unusual proof of work
Next step: Separate off-nav listings page