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

Track record

Where the experience comes from

  1. Present

    Lead Developer Senior Center Agents

    Owner of a real-time call-routing, billing, and compliance platform serving hundreds of concurrent agents.

  2. 2024 — Present

    Founder & Principal Engineer SyiTek

    Autonomous multi-agent systems, client platforms, and interactive web R&D.

  3. 2024 — 2026

    Full-Stack Engineer DH Insurance Group (Cresso Health)

    Solo-built the DH Portal operations platform and carrier verification automation.

  4. 2023 — 2024

    Airman, E3 United States Air Force

    Air and Space Achievement Medal for rapid response during a medical emergency.

  5. 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

Available for engagements that need an owner, not a resource.