Irrational Solution

Data, AI, and solutions engineering. For fintech and data teams.

We take AI and data systems from prototype to production: reviewed, fixed, tested, and handed back documented.

Book a free 15-minute fit call Read a sample triage report

1.41421356237309504880…

  • Data engineering: Pipelines, warehouses, migrations, and data quality checks.
  • AI engineering: LLM features, retrieval, evaluation, and cost control.
  • Solutions engineering: Scoping, integrations, and proofs of concept with your customers and vendors.

Where our founder has built

  • Bloomberg
  • Assured Guaranty
  • OXYS
  • GreenRoom
  • QuantMechanix
  • SGNL

Start with the triage.

Already shipped an AI feature that is unreliable or expensive?

Production Triage

$1,500 three business days

One system, a ranked risk list, and a fix plan your team can carry out.

Its fee is credited toward a sprint that starts within 30 days.

Book a free 15-minute fit call Read a sample triage report

  • Production Audit

    $4,000–$8,000

    one to two weeks

    A deeper review across the whole stack.

  • Build or Rescue Sprint

    $8,000–$25,000+

    two to six weeks

    We fix or build the part that is failing, with tests.

  • Fractional engineering

    From $6,000

    a month, ongoing

    A senior engineer on your system every week.

Each engagement gets a fixed fee, agreed in writing before work starts.

What you receive in each

Work we can walk you through

Two systems our founder engineered. Neither is client work, and both are described as they stand today.

QuantMechanix policy observability panel listing named gates with fail, unknown and pass counts
Research tool

QuantMechanix

An options research tool. Every candidate is logged against named policy gates, and model predictions are scored against settled paper trades. It runs on paper by default.

Exact gate outcomes across two policy versions.

The GreenRoom assistant answering a question about which producer fits a brief, with the first match card beginning below the answer
Private beta

GreenRoom V2

A professional network for the music industry. Its assistant answers from a Postgres graph through typed tools, with spend limits enforced in the database. Our founder is its founding engineer, at GreenRoom Technologies, Inc.

Screen shows seeded demo data.

About

Irrational Solution was founded by Eric Henschel. Before the firm he built production data systems as an employee at Bloomberg and Assured Guaranty, and he is the founding engineer at GreenRoom Technologies. He holds a degree in applied mathematics.

BloombergSoftware engineer, Data Technologies

  • A Kafka migration for ESG company data used in quantitative research: 6,500+ companies, with 45% lower query latency after the migration.
  • Normalized bank-filing pipelines for Terminal credit analysis.

Assured GuarantyData engineer

  • The data pipeline into a Snowflake warehouse modelled as Data Vault 2.0, bringing in vendor data from Bloomberg, Moody's, ICE and MMD (Refinitiv). New data sources onboarded 85% faster.
  • A regression parameter optimization for catastrophe-risk modelling across a search space of more than 100 million combinations. Calibration that had run for days or weeks finished in about two hours.

Intelligent Automation, Inc.Software engineer, Data Science

  • An R&D contractor to the U.S. Department of Defense and other federal agencies. It was acquired by BlueHalo in 2021, and BlueHalo is now part of AeroVironment.
  • Improved wind-speed prediction accuracy by 26% for autonomous-drone systems, and built a social-bot detection workflow that was deployed.

OXYSMachine learning engineer

  • An industrial IoT and edge-computing company in Cambridge, Massachusetts.
  • An anomaly detection model for a global biotech company's large-volume vaccine production line, built to flag likely quality problems before they cost product.
  • Time-series ETL and anomaly detection across more than a million traffic-sensor records in PostgreSQL and AWS.

Work done as an employee, shown as experience. None of these companies is a client of the firm or endorses it.

Read the case studies

Irrational by name. Exact by method.

√2 is the positive solution to x² = 2. It cannot be written as a fraction, and its digits never end or repeat. It is also exact: one number, precisely defined, and the same every time you compute it.

That is the standard we hold a production system to. It finishes its work, and it gives the same answer twice.

Start with fifteen minutes.

A free call to see whether the triage fits your system. No preparation needed.

Book a free 15-minute fit call