About
Craig-Syheem Lewis — Founder & Principal Engineer.
Full-stack engineer specializing in real-time systems, automation, and internal platform development. Proven ability to own production systems end to end, from architecture through deployment, across telephony, billing, compliance, and analytics pipelines.
The pattern in my work is consistent: I take over systems that are already live, already load-bearing, and already unreliable — then make them boring. That has meant eliminating recurring crash patterns under real concurrency, removing double-booking from a live routing engine, and closing a wide surface of pre-existing security gaps without pausing the business.
Alongside stabilization, I build the automation that replaces manual labor. Carrier verification workflows that consumed staff hours daily now run as API-driven, parallelized processes. Reporting that operators used to assemble by hand is now a dashboard with drill-down metrics, call playback, and role-scoped visibility.
I also came into this work from the operational side — running structured qualification interviews in health insurance before engineering the telephony and billing platforms that same industry runs on. I know what the person on the phone needs from the software, because I was that person.
I served in the United States Air Force and was awarded the Air and Space Achievement Medal for rapid response during a medical emergency — taking control of the situation, coordinating emergency response, and maintaining monitoring until medical professionals took over. That is the same disposition I bring to a production incident.
- Studio
- SyiTek
- Role
- Founder & Principal Engineer
- Based
- Fort Mill, SC · Remote
- Service
- United States Air Force, E3
- Contact
- SyiTek@aol.com
Track record
Where the experience comes from
Present
Lead Developer — Senior Center Agents
Owner of a real-time call-routing, billing, and compliance platform serving hundreds of concurrent agents.
2024 — Present
Founder & Principal Engineer — SyiTek
Autonomous multi-agent systems, client platforms, and interactive web R&D.
2024 — 2026
Full-Stack Engineer — DH Insurance Group (Cresso Health)
Solo-built the DH Portal operations platform and carrier verification automation.
2023 — 2024
Airman, E3 — United States Air Force
Air and Space Achievement Medal for rapid response during a medical emergency.
2022 — 2023
Administrative Assistant & IT — Legacy Care Management
Built the company website and ran all software and hardware support.
Capabilities
Skill matrix
- Languages
- TypeScript, JavaScript, Python, C#, SQL
- Frontend
- React, Next.js, Vite, Tailwind, Three.js
- Backend
- Node.js, Express, REST APIs, Webhooks, JWT, RBAC
- Data
- MySQL, PostgreSQL, Firestore, Redis
- Cloud & DevOps
- Linux, Nginx, Docker, VPS deployment
- Integrations
- Twilio, Stripe, Firebase, Slack API
- AI & Automation
- OpenAI API, Claude API, LangChain, RAG
- Security
- JWT, RBAC, CSRF, AES-256-GCM
Next step