■ Profile
Platform Engineer
I build the platforms, infrastructure and identity systems that let a small team ship like a large one — with AI agents held to the same standard as people.
I design and run the foundations other engineers build on: architecture, infrastructure, identity and security, and the engineering standards that hold them together.
Much of my recent work is about making AI-assisted delivery trustworthy. I hold agent-written code to the same standard as anyone's: a written spec before code, tests first, a hook that stops an agent finishing until typecheck, lint and tests pass, and adversarial review by a model from a second vendor.
I do my best work where a small team needs to operate like a much larger one: setting technical direction through architecture decision records, choosing platforms on measured evidence, and automating the work nobody should do by hand.
A Claude Code platform for a whole engineering team: a plugin of 21 skills and 3 hook events for spec-first authoring, test-driven implementation and cross-vendor adversarial review, plus a versioned engineering-standards baseline that fans out automatically to about 26 repositories.
An agent execution and evaluation platform. Coding agents take specified work, build in sandboxed containers with per-run credentials, pass rubric-graded review gates and merge on automated criteria. The platform choice was settled by a measured spike: 3.3 s cold start, 32 ms warm.
Built from scratch: did:web identity with WebAuthn passkeys and W3C Verifiable Credentials, in production as the sign-in for a suite of internal applications, with federation to self-hosted DIDs — including this domain.
Cloud and SaaS infrastructure run through Terraform Cloud with GitOps — plan on pull request, apply on merge, daily drift detection — across GitHub, Cloudflare, Kafka, Databricks and observability. AWS and Microsoft 365 as code; joiners and leavers automated.
A meeting-transcription pipeline on an NVIDIA DGX Spark — NeMo ASR, diarisation and voiceprint speaker naming — for audio that cannot leave the building.
An adaptive maths learning platform, built from what I saw in the classroom: the gap between what teachers need and what edtech actually provides.
An agent that emails forecasts to a sailing yacht at sea.
I studied Electrical and Electronic Engineering (BEng), then trained as a maths teacher (PGCE, UCL) and taught secondary mathematics for two years. In 2021 I taught myself full-stack development and moved into software, and I have worked in platform engineering since 2023.
Teaching shaped how I build tooling: it only counts if people pick it up and use it well.
Patrick Vieira is a platform engineer based in London — not the footballer of the same name. He designs and runs the foundations other engineers build on: architecture, infrastructure, identity and security.
Platform engineering, AI-assisted software delivery, infrastructure as code and passkey-based identity, mainly with TypeScript, Python, Cloudflare and Terraform.
An internal developer platform for AI-assisted delivery, an agent execution and evaluation platform, a passkey and verifiable-credential identity system, infrastructure as code across cloud and SaaS, and an on-premises speech pipeline.
By holding it to the same standard as anyone's: a written spec before code, tests first, a hook that stops an agent finishing until typecheck, lint and tests pass, and adversarial review by a model from a second vendor.
Through LinkedIn or GitHub — links at the top of this page.