Rust systems
Backend and systems-level Rust: correctness, performance, soundness.
3-DAY TECHNICAL RISK REVIEW · $3,500 FIXED, EXCL. VAT
Decide what to stabilise, rewrite or pause before burning runway.
A fixed-scope, 3-day technical risk review for funded founders, CTOs and investors facing an impending software decision. An evidence-backed memo, prioritised risk register and 30-day stabilisation plan.
BEFORE REQUESTING A REVIEW
Stabilise, rewrite or pause? 12 questions to know if you have enough evidence.
PDF scorecard, 10 minutes. Send it back completed and I'll reply within 2 business days with a short note.
Stabilise, rewrite or pause? 12 questions to know if you have enough evidence.
FLAGSHIP OFFER
3-Day Technical Risk Review
A fixed 3-day review for funded startups, investors and technical leaders facing a high-stakes software decision. Get an evidence-backed answer on whether to stabilise, rewrite, proceed or pause — and what to fix first.
- Architecture & maintainability assessment
- Dependency, supply-chain and delivery risk
- Security signals and red flags
- Prioritised risk register with severity and effort
PROOF, NOT CLAIMS
Evidence packs
Public, reproducible sample packs generated by my Rust due-diligence toolkit on real open-source projects. They show the exact workflow and artifacts a real engagement produces — executive report, scorecard, evidence, risk register, review questions and methodology. (These are method demos, not endorsements or final verdicts on the projects shown.)
Audit pack
Tokio
Audit pack for tokio-rs/tokio: report, scorecard, risk register, review questions.
Open evidence pack Audit packAxum
Audit pack for tokio-rs/axum: report, scorecard, risk register, review questions.
Open evidence pack Audit packRatatui
Audit pack for ratatui/ratatui: report, scorecard, risk register, review questions.
Open evidence packWHERE I GO DEEP
Specialist areas
Bitcoin / PSBT / descriptors
Wallets, Lightning, PSBT flows and output descriptors.
AI systems & governance
Model/data pipelines, eval, and EU AI Act readiness.
Backend architecture
Service boundaries, data modelling, scalability.
Dependency & delivery risk
Supply chain, build health, ship-ability.
ENGAGEMENTS
Offers
$3,500 fixed, excl. VAT
3-Day Technical Risk Review
Decision memo + risk register + 30-day stabilisation plan for teams facing an impending software decision.
from €4,800/month excl. VAT
Fractional Head of Engineering
Four days of ongoing technical ownership for systems that need continuous architecture guidance post-review.
ABOUT
Jose Robles
Fractional Head of Engineering working across Rust, Bitcoin protocol and AI systems. I run technical due diligence for teams who need a fast, honest read on complex software — the places where risk is easy to miss and expensive to find late. Based in Spain, working remote worldwide.
RustBitcoin & LightningAI systems & AI ActFractional engineering leadership
Ready to scope the decision?
Tell me what system and decision you are facing. We confirm scope and fit within 20 minutes.