// full-stack engineer · go specialist
Hayden Clarke
I build backend-heavy products in Go that ship fast and stay correct, across fintech, telecom, geospatial, and AI. Seven years in lead, team, and solo roles, from first commit to production.
// work
Selected work
Verocci Group · Upcomers · 2024–25
Led three engineers building a platform for funded traders. Architected a distributed P&L engine that reconciles cross-account positions with equity-drift detection, plus Stripe, crypto, and KYC integrations.
- Go
- Deno
- React
- Postgres
- Supabase
KareHero · 2025
Retrieval-augmented chatbot grounded in company knowledge, answering customer questions in context. Part of the AI work to support KareHero's Series A raise.
- Python
- LangChain
- Go
- GCP
KareHero · 2025
Fivetran + dbt pipelines over CRM and product data, investor-facing Looker Studio dashboards, and automated call-centre transcript summarisation from diarized audio.
- dbt
- Fivetran
- BigQuery
- Looker Studio
Nautilus Network · 2023
Billing and reporting portal built from scratch: usage dashboards, customer lookup, Xero invoice sync, and time-based billing logic that survives call-rounding edge cases.
- Go
- React
- Docker
- Xero API
Clere Golf · 2020–22
B2B geospatial tools rendering high-resolution drone survey data as interactive maps, used on European Tour and Ryder Cup projects. Led a team of four.
- React
- Go
- PostgreSQL
- Mapbox
Cloud Observer · EfficientIP · 2023–24
Real-time views over AWS, Azure, and GCP resources: usage metrics, compliance reporting, and asset management for teams cutting waste from unused infrastructure.
- Vue.js
- Python
- AWS
- Azure
- GCP
// experience
Shipped, in order
- 2026–now
Senior Software Engineer · Croner
Next.js, TypeScript, and Go; main contributor to the AIR environmental compliance tool.
- 2025
Software Engineer · KareHero
AI features and data infrastructure to support the Series A raise.
- 2024–25
Lead Engineer · Verocci Group · Upcomers
Prop-trading platform; team of three; distributed P&L engine.
- 2023–24
Software Developer · Cloud Observer · EfficientIP
Multi-cloud spend visibility platform in Vue.js.
- 2023
Software Engineer · KareHero
Go API and React features through the first VC raise; rehired in 2025.
- 2023
Lead Developer · Nautilus Network
Telecom billing portal built from scratch in Go and React.
- 2023
Backend Engineer (Go) · Loadbalancer.org
Greenfield customer portal: Go microservices, gRPC, Kubernetes.
- 2020–22
Lead Developer · Clere Golf
Promoted to lead; geospatial platform for European Tour projects.
- 2019–20
Software Developer · Habiplace
Smart-home management app in Angular and Node.js.
- 2015–19
Team leadership & operations · XPO Logistics, American Golf, Grainger Games
Led teams of 3–6; client relationships and operational reporting.
// skills
Tools I reach for
Languages
- Go
- TypeScript
- Python
- SQL
- Rust
- Solidity
Frameworks & libraries
- React
- Vue
- Node.js
- Deno
- LangChain
- Supabase
- Tailwind
- Mapbox
- PostGIS
Infrastructure & data
- Docker
- Kubernetes
- Terraform
- GCP
- GitHub Actions
- Redis
- PostgreSQL
- BigQuery
- dbt
- Fivetran
Concepts & practices
- Domain-driven design
- Hexagonal architecture
- Event-driven systems
- Distributed systems
- Concurrency & race safety
- Observability
- Testing
- System design
- Tech leadership