Senior Software Architect · Consultant · Builder of pragmatic SaaS & data tooling
I help startups and product teams ship reliable, maintainable backend systems and developer-friendly platforms. I pair deep systems design (Go, Python, cloud infra) with practical product thinking so you get working software and a path to scale.
🔧 What I do:
- Consulting & fractional CTO for early-stage SaaS - architecture, product roadmaps, and technical leadership.
- Backend & APIs - Go + gRPC, REST/BFF patterns, and robust service design.
- Data engineering & analytics - DuckDB / Parquet patterns, data pipelines, observability, and data-driven product features.
- Frontend & DX - TypeScript / React, developer-friendly SDKs, and delightful admin/console experiences.
- Cloud & infra - multi-tenant patterns, deployments, backups, and sane cost/egress tradeoffs.
🛠 Tech stack highlights
Go · Python · TypeScript · React · SQLite · DuckDB · PostgreSQL · Cloud (AWS / GCP) · Agents / LLMs
📌 Recent engagements:
- Architected multi-tenant SaaS designs and migration plans for product teams.
- Built notebook-style tooling that converts spreadsheets/worksheets into governed APIs.
- Designed secure, auditable governance and approvals for finance and ops workflows.
📬 Availability & contact
Open for short-term engagements and longer advisory roles.
Contact me at castlebytes.com or LinkedIn
⚡ Fun facts: