Fractional CTO & Principal Engineer
I help engineering teams ship ambitious systems, from LLM-powered platforms and correctness-first backends to production-ready infrastructure when it matters most.
Engagements scale from architecting a critical feature to integrating LLM-driven components deep in your stack.
Scope, prototype, and ship agents, retrieval workflows, and automations that deliver measurable outcomes.
Untangle complex services, introduce type-safe interfaces, and build systems that stay correct under load.
A sampling of the problems I’ve solved for startups, scale-ups, and enterprise teams over the past decade.
Built a repeatable LLM pipeline to triage outbound sales leads, using dataflow modelling for cacheable prompts and parallel categorisation that keeps throughput high while controlling cost.
Surveyed the literature and solver landscape, selected a best-in-class Java optimisation engine, and wrapped it in a clean OpenAPI bridge to the TypeScript web app, backed by generative tests that prevent integration drift in HosPortal’s flagship AI scheduler.
Learn moreDiagnosed and rewrote a latency-sensitive Haskell service for a Sydney startup, dropping response times from multiple minutes to under 500 ms while preserving correctness guarantees.
Exploratory builds we’re proving out before they hit client roadmaps.
Autonomous crawler factory delivering production-grade scrapers in minutes.
Learn moreShake-based recomputation unlocks parallel, low-cost agent runs.
Learn more25+ years of shipping systems across sectors, always choosing the technology that best fits the problem.
Clarify the sharp constraint and define a measurable win.
Design a pragmatic plan with a first win in week one.
Partner with your team to ship and leave durable tooling.
I’m Mark Wotton, an experienced builder of high-stakes software systems. My work spans startups like BetterTeam, MeanPath/Leadstage and NinjaBlocks, enterprise security firms like SimSpace, and a constellation of startups that needed deep technical leverage fast.
I created LambdaMechanic to partner with teams tackling algorithmically demanding products, data-heavy platforms, and LLM experiences where correctness matters. If your roadmap includes a tricky system that must work the first time, let’s talk.
Tell me about the problem you need solved and the timeline you’re working with. I’ll follow up within two business days.