Platform engineering
Cloud foundations, internal platforms and delivery pipelines your teams actually enjoy using.
Engineering studio for systems that last
Software that holds the line.
Kernfield designs and builds the platforms, products and AI systems that teams rely on when the stakes are real.
01 — Practice
Four disciplines, one engineering culture.
Product design
Interfaces for complex, high-stakes work — designed with operators, not for them.
Data & AI systems
Pipelines, evaluation and models in production, with guardrails you can explain.
Reliability
SLOs, incident tooling and capacity work that keep the pager quiet at 3am.
02 — Work
Selected case studies.
03 — Clients
Trusted where downtime isn't an option.
NORTHWINDlumen/healthARCADIAVellichorOXBOW RAILhelio·gridQuarryMERIDIAN
NORTHWINDlumen/healthARCADIAVellichorOXBOW RAILhelio·gridQuarryMERIDIAN
“They rebuilt the system our whole business runs on — and nobody outside engineering noticed. That's the highest compliment I can give.”— VP Engineering, Arcadia Bank
04 — About
Small team. Long horizons.
Kernfield is a studio of forty engineers and designers who prefer boring technology, sharp interfaces and systems that are still standing in ten years. We embed with your team, ship in weeks, and leave behind code you're proud to own.
0Years in practice
0Systems shipped
0Median uptime
05 — Journal
Notes from the workbench.
Oct 2026 · 8 min
The case for boring infrastructure
Why our favourite stack choices are the ones nobody tweets about.
Sep 2026 · 6 minEvaluating LLM features like we test payments
Golden sets, canaries and the discipline of saying no.
Aug 2026 · 11 minMigrating a ledger without a maintenance window
Dual writes, shadow reads and a very long checklist.
06 — Contact