Case studies

Five AI voice and production AI projects, and what I actually did on them

Problem, my role, and the evidence for each. Where an NDA applies the client is described but not named.

Documented project work

Work you can verify, not claims you take on trust

Each project names the problem, what I personally built, and the evidence behind it. Where an NDA applies the client is described but not named.

Voice AIUnder NDA

Real-Time AI Voice Agent: One Year in Production, Live on Google Play

Consumer voice AI product, client under NDA

Challenge: Hold a natural spoken conversation with an AI companion in real time, at latency low enough that the pause between turns does not break the illusion.
My role: One-year engagement owning the conversational AI layer end to end: streaming speech recognition, pipelined model calls, speech synthesis, and barge-in handling on a WebSocket backend.
Evidence: Shipped and live on Google Play; client details withheld under NDA.

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RAG / EdTechEdTech

Trainizi: AI Course Builder for Nano-Learning

Document-to-course platform for corporate training

Challenge: Turn unstructured source documents into structured, teachable mini-courses without a human rewriting every one by hand.
My role: Six-month build: the RAG pipeline that parses documents into course structure, plus student dashboards and progress tracking.
Evidence: Around 10,000 learners and roughly 5,000 generated mini-courses.

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Safety-Critical AIPrivate client

Safety-Critical AI for a Regulated Practice

Healthcare client, details withheld

Challenge: Assist a professional in real time in a setting where one component of the system is safety-critical and a wrong output can cause harm.
My role: Architecture and build across the assistant, the safety layer and the data-retention model, working under the client's compliance regime.
Evidence: Engagement in progress. Further detail available on request, subject to client approval.

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Full-StackSocial

Social Network Platform for 60K Registered Users

Consumer social product

Challenge: Build and run a social platform that stays responsive as the user base grows into the tens of thousands.
My role: End-to-end full-stack build covering frontend, backend, real-time features and cloud infrastructure.
Evidence: 60,000 registered users in production.

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SaaS PlatformHospitality

HANZ: Property Management for 600+ Hotels

Multi-property hotel management system

Challenge: Give hundreds of independent properties one system for rates and availability, with pricing changes that propagate fast enough to matter.
My role: Full-stack platform work across the property management system and its pricing engine.
Evidence: 600+ hotels on the platform, with 5-minute pricing updates.

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Client feedback

What clients said on Upwork

Every review below comes from a completed Upwork contract, quoted as written.

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Featured client review

Andrew Wallace

United States

Crypto transaction system

“Diagnosed the server issue immediately, fixed it, then resolved several related problems unprompted.”

5.0· May - Jun 2024

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Jason Parker

United States

E-commerce website build

Built the e-commerce site from the ground up with clean code, clear communication and every deadline met.

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James Davis

United States

Web system reconciliation

Solved a code issue other developers could not, patiently and with confidence.

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Patricia Hand

United States

E-commerce build: store setup, products, payments

Honest and technically capable. Would work with again.

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