Interface
Composable UIs, design systems, and micro-frontend surfaces
VueNuxtReactSvelte
ERNEST/ HAYFORD
AI Agent SystemsGTM AutomationWorkflow OrchestrationLLM Evaluation
Services
APIs, event-driven workflows, and distributed backends
Node.jsTypeScriptGraphQLHono
Data
Schema design, caching layers, and data integrity at scale
PostgreSQLMongoDBRedisDrizzle
Cloud & Edge
Serverless, observability, and global delivery infrastructure
AWSCloudflareKubernetesServerless
01
Overview
AI SystemsGTM AutomationFull-Stack
8+ years shipping full-stack products and AI systems that multiply team output. Sole architect of HustleSasa platform ($50K→$900K+/mo payments). I design GTM automations, agent workflows, and internal tools that give departments 5–10× leverage — engineered systems with eval gates and production reliability, not chatbots bolted on the side.
Architecture
From AI agent pipelines and GTM automations to Vue, React, and Svelte frontends, serverless backends, and edge deployments. I build systems that scale across every layer — commercial and technical.
AI & GTM Systems
Agent workflows, enrichment pipelines, and cross-department automations that wire CRMs, outbound tools, and LLMs into one revenue engine with guardrails and measurable outcomes.
Microservices
Decompose monoliths into independently deployable services with clear domain boundaries, resilient communication, and observable pipelines.
Serverless
Event-driven, pay-per-use architectures on AWS and edge runtimes, from API gateways to background workers with zero idle cost.
Micro-Frontends
Module federation and independent frontend teams shipping Vue, React, and Svelte apps that compose into a unified product surface.
Edge / Cloud
Global delivery via Cloudflare Workers, CDN caching, and cloud-native infra with low latency from browser to database.
03
Experience
Lead Full-Stack Engineer @ HustleSasa
- Architect and maintain more than 5 core backend services and micro-frontend surfaces powering fintech infrastructure
- Scaled transaction volume of 1M+ transactions / month (18× growth)
- Achieved 99%+ uptime across production services
- Reduced API latency by 65% through query optimization and caching
- Led micro-frontend migration with module federation, increasing deploy frequency by 300%
AI Operator Consultant @ Invisible Technologies
- Design and implement LLM evaluation frameworks for production AI systems
- Build quality assurance pipelines for model output validation
- Architect agent workflows with eval gates for reliable GTM and ops automation
Senior Software Engineer @ Simple Dealer
- Built Autofill Engine processing 1,000+ transactions/minute
- Achieved 97% test coverage across core services
- Designed high-throughput automotive data ingestion pipelines
- Delivered full-stack features across Vue frontends and Node.js/Rust backends
Technical Lead @ Agro Innova
- Led engineering team through product pivot and platform consolidation
- Defined technical roadmap and architecture for agritech products
Full Stack Engineer @ Agro Innova
- Built USSD platform for farmer engagement at scale
- Developed Akoko Market marketplace and Farm Business School (FBS)
- Implemented Bulk SMS notification system for agricultural outreach
Freelance Software Engineer @ Independent
- Deliver full-stack and AI automation solutions for startups and SMEs across West Africa
- Build GTM systems, internal tools, and department workflows that multiply team output
- Specialized in API design, agent orchestration, cloud infrastructure, and payment integrations
Projects
HMS
Full-stack hospital management system for clinics in Ghana: patient registration, OPD triage, billing, and role-based access
Standalone Autofill Engine
High-performance automotive data autofill engine rewritten in Rust
Agent Revenue Pipeline
Consulting GTM system: Clay enrichment and signal triggers feed n8n orchestration and HubSpot CRM, with LLM agents handling lead research, personalized outbound, and inbound routing — eval gates before anything reaches a prospect.
My Approval
Serverless platform for automating approval and workflow routing across departments
Visit ↗Hami Express
GraphQL library for building schema-first APIs with minimal boilerplate
Repository ↗SST Deploy
GitHub Action for deploying SST applications to AWS with zero config
Repository ↗Stack
AI & Automation
- AI Engineering
- GTM Engineering
- Agent Orchestration
- LLM Evaluation
- Workflow Automation
- Prompt Engineering
GTM Stack
- Clay
- n8n
- Make
- HubSpot
Languages & Frameworks
- TypeScript
- Node.js
- Rust
- Python
- Mojo
- Vue
- Nuxt
- React
- Svelte
- Hono
- Express
Cloud & Infrastructure
- AWS
- Kubernetes
- Docker
- Serverless
- SST
- Cloudflare
- Edge Computing
Databases & Caching
- PostgreSQL
- MongoDB
- Redis
- DynamoDB
Architecture & Patterns
- Microservices
- Micro-Frontends
- Module Federation
- Event-Driven
- Serverless
- Distributed Systems
- GraphQL
Practices & Domains
- Fintech
- GTM Systems
- AI Engineering
- CI/CD
- Test-Driven Development
- Payment Infrastructure
06
Polyglot
TypeScript is home base, but I reach into other languages when the problem demands a different shape: memory safety, numeric performance, or AI-native tooling.
TypeScript
ProductionHome base for full-stack delivery: typed Vue/React frontends, Node services, shared contracts, and the layer where most production systems are designed and shipped.
Rust
ExperimentingHands-on experimentation with systems programming: memory safety, concurrency, and performance patterns before committing them to production paths.
Python
Active, when neededHeavy use when the problem calls for it: AI agent pipelines, GTM automations, data scripting, and fast backend prototyping — the default reach for LLM-powered systems.
Mojo
ExploringEarly exploration for machine learning workloads: Python-like ergonomics with a path toward bare-metal performance for model-centric systems.
GTM Engineering
RevenueAutomationScale
Revenue infrastructure, not more headcount
GTM engineering is where commercial instinct meets code. I build the automated systems behind outbound, inbound routing, CRM enrichment, approval workflows, and cross-department ops — wired with LLMs and APIs so marketing, sales, and operations run faster without hiring linearly.
Cross-department automation
Marketing, sales, CS, finance, HR — any team with repetitive workflows gets custom tooling. I map the bottleneck and ship the system, not a one-size template.
AI-native GTM plays
Lead research, personalization, enrichment cascades, and signal-triggered outbound — encoded as agent workflows with eval gates, not one-off prompts.
Revenue stack integration
CRM, enrichment, outbound, analytics, internal APIs — composed into one pipeline. Data flows in, qualified action flows out.
5–10× operational leverage
Replace weeks of manual work with autonomous workflows. Outcomes: hours saved, pipeline velocity, conversion lift — engineered, measured, iterated.
AI Engineering
ModelsMechanicsMastery
AI engineer, not AI user
I do not sprinkle GPT calls on features. I engineer AI systems: agent orchestration, evaluation frameworks, inference pipelines, and the reliability layer that turns demos into production. Current work includes LLM eval and QA at Invisible Technologies — the same rigor I bring to client automations.
Agent orchestration
Multi-step LLM workflows for research, enrichment, routing, and follow-up — with tool use, guardrails, and human handoff when confidence is low.
Evaluation & benchmarking
Designing rigorous eval frameworks for LLM outputs: quality scoring, regression detection, and production safety gates before anything ships.
Inference engineering
Latency, context windows, batching, and deployment patterns for making models fast, observable, and dependable in real products.
Model mechanics
Transformers, attention, embeddings, and how architecture choices shape capability and cost — so production systems are designed with limits in mind.
Life
Engineering is the craft, but balance keeps the edge sharp. Competitive games, pitch time, and the occasional jog keep me grounded outside the terminal.
Gaming
Apex Legends
Fast-paced BR: movement mechanics and team coordination.
FIFA
Football on the couch: tactics, seasons, and the occasional rage quit.
Rainbow Six Siege
Tactical FPS: map knowledge, operator synergy, and clutch rounds.
Fitness & Outdoors
Swimming
Laps for clarity: low-impact cardio and a reset from the screen.
Football
Pickup matches with friends, the real kind, on grass.
Basketball
Casual runs and shoot-arounds: competition without the league fees.
Jogging
Early morning or evening runs to clear the head and stay sharp.
Build Revenue Systems
Open to AI engineering, GTM automation consulting, fractional GTM engineering, and senior full-stack platform work.