Your agency sells it.
I build it.

AI agents, workflow automation, and production-grade internal tools, built under your brand and delivered with full documentation. You keep the client. I handle the build.

Subcontract capacity for n8n, AI agents, full-stack apps, and spreadsheet systems. First project free.

Farai Kepekepe
Farai Kepekepe
Zero Risk The first project is free. You evaluate the quality before any commitment.

You are selling faster
than you can deliver.

Your pipeline is growing but your build capacity is not. Hiring full-time is slow and expensive. You need someone who plugs in, builds production-ready systems under your brand, and disappears until the next one.

Clear your backlog

You have clients waiting for builds you cannot start yet. Hand them off and get them delivered without slowing your sales pipeline.

Zero risk to start

The first project is free. You evaluate the build quality, documentation, and communication before any money changes hands.

Invisible to your clients

Your clients never know I exist. You own the relationship, the deliverable, and the credit. I work under your brand and stay behind the scenes.

Documented handovers

Every system comes with full documentation. Your team or your client can maintain, modify, or extend it without depending on me.

UK and US timezone overlap

Based in GMT+2 with availability up to 12 hours a day when needed. Strong overlap with UK and US East timezones for real-time communication.

Production-grade builds

Not prototypes. Not demos. You get production systems with error handling, idempotency, audit trails, and edge-case logic baked in.

Low management overhead.
Predictable delivery.

You need a subcontractor who requires almost no supervision. Here is how every engagement runs.

1

You send a brief

A document, a Loom, a messy spreadsheet, or a Slack message. Whatever is easiest for you.

2

Scoped proposal

You get a clear architecture, timeline, and build plan. No ambiguity about what gets delivered.

3

Build with checkpoints

You see progress, not silence. Working checkpoints so you can course-correct early if needed.

4

Tested and hardened

Edge cases handled. Error states covered. Idempotency where it matters. This is not a rough draft.

5

Delivered with docs

Full documentation, handover walkthrough, and no ongoing dependency. You are free to maintain or extend it.

Systems that went to production.

Each of these solved a real operational problem. The type of work ranges from AI agents and financial modelling to full-stack healthcare apps and payment automation.

AI Agent

Inbound Job Evaluation and Proposal AI Agent

Automated classification, scoring, and proposal generation for inbound jobs from Upwork using a dual-LLM pipeline with failover routing.

n8n → Gmail trigger → dual LLM evaluator (+ Groq failover) → Google Sheets → Telegram

Processes inbound leads end-to-end: parsing, evaluation, proposal writing, priority filtering, and instant notification. Zero manual triage.

AI Agent demo
Financial Modelling

Operational Liquidity Cashflow System

Forward cash-flow visibility from raw accounting exports. Five architectural layers: ingestion, normalisation, persistence, control logic, and aggregation.

Google Sheets → ARRAYFORMULA + QUERY + LET → 5-layer engine → dashboard

Deterministic monthly projections with supplier payment terms, split payments, and manual override support. Deployed across two production variants.

OLCS demo
Financial Automation

Idempotent Payment Processing Pipeline

Exactly-once invoice processing, receipt delivery, and ledger reconciliation. Solved duplicate processing on retries and partial execution failures.

n8n → Stripe API → Airtable (state ledger) → Google Sheets + Drive → SMTP

Deterministic idempotency keys, external state tracking, and three independent audit artefacts (Airtable, Sheets, Drive).

Stripe Ledger demo
Data Quality

Inbound Data Validation Pipeline

Pre-ingestion gate for CRM data: phone normalisation, email validation, disposable domain blocking, duplicate detection, and explainable rejection logging.

n8n → webhook → JS + Regex validation → routing → CRM / Slack (reason codes)

Every rejected record includes a machine-readable reason code. Zero silent drops. Full audit trail for rule tuning.

Data Validation demo
Full-Stack Application

Compliance-Grade CRUD with Third-Party API Sync

End-to-end patient management with field-level AES-256 encryption, JWT authentication (in-memory, not localStorage), FHIR R4 synchronisation, and full audit logging.

React + Vite → ASP.NET Core 8 API → SQL Server → Azure FHIR R4 → GitHub Actions CI/CD

Demonstrates secure handling of sensitive data, deterministic FHIR resource mapping, and healthcare compliance patterns.

FHIR system demo
Integration Middleware

Legacy System API Bridge

Containerised middleware wrapping a legacy EMR system: secure API layer, audit logging, data extraction, and TLS-terminated reverse proxy. The legacy system never touches the public internet.

Docker Compose → ASP.NET Core 8 → OpenEMR + MariaDB → Caddy (TLS) → React frontend

Reproducible multi-container deployment with SSH-based CI/CD. Added auditability to a system that had none.

EHR Bridge demo

Building with AI since before the current wave.

AI Startup Pitch Competition at University of Namibia

1st Place, AI Startup Pitch Competition

In 2021, I led a team to first place in the inaugural AI Startup Pitch Competition at the University of Namibia. Nine teams competed. I was team leader and delivered the pitch.

This was before ChatGPT, before the current wave. I was already building and thinking about applied AI when most people had not heard of it yet.

Read the article

Tools you already work with.

No exotic frameworks. No lock-in. Everything here is standard and maintainable.

Claude
n8n
Google Sheets
Google Apps Script
ASP.NET Core / C#
React / Vite / Tailwind
Docker / Docker Compose
REST APIs
SQL Server
GitHub Actions CI/CD
Stripe API
Airtable
Slack / Telegram APIs

Verified by the people who paid for the work.

"Farai went above and beyond on this project... through a strong growth mindset and openness to learning, he quickly grasped the technicalities and delivered an excellent solution. His competency is beyond reproach, and combined with a strong focus on delighting the customer, he delivered more than what we asked for. Highly recommended."
Context: This review was for the Google Sheets & Apps Script, Recipe-Based BOM and Cost Engine. Paid engagement. The same client commissioned the 5 Layer Operational Liquidity Control System (OLCS).

Girish Ramjuttun

CEO & Co-Founder

Passage Export Group

Melbourne, Australia & Mauritius

5.0 / 5.0 Upwork

Your next build is already scoped in my head.

Send the brief. The first project is free. You evaluate the quality. If it works, we keep going.

farai@kepekepe.dev