About
Robert Alan Ramsay
Senior Full-Stack Engineer · Scalable Systems & AI-Driven Applications
I am a Denver-based senior full-stack engineer with 10+ years designing and scaling backends, modernizing frontends, leading teams, and owning DevOps in startup and enterprise settings. Through RMZI.tech I take short engagements where a staff-level engineer can unblock delivery — not open-ended staff augmentation.
Based in Denver, CO, available 7:00 AM – 5:00 PM Mountain, Monday–Friday. Day-job and personal calendars sync into booking so you only see real availability.
Selected experience
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Sep 2025 – Present
Staff Engineer · Zuma
Lead on Integrator: moved critical paths off sparse AWS Lambda onto a dedicated service (−60% p99); MongoDB → Postgres. Node/TS, NestJS, Terraform, ECS, React.
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Nov 2024 – May 2025
Senior Software Engineer · Vorto
Ground-up driver mobile rebuild (−80% support requests) and LLM support chat (OpenAI/Claude). Go, Postgres, GKE, Next.js.
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Jan 2023 – Oct 2024
Founding / Lead Engineer · Reach Talent
Engineer #2 on a custom workforce platform (time, expenses, payroll, candidates) plus DevOps and a 90%+ test coverage bar. Python/Flask, Vue/TS, Kubernetes, Terraform.
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Aug 2021 – Jan 2023
MTS 2 · Happy Returns (PayPal)
Monolith → microservices in ~3 months; i18n for six languages across four teams; owned a core internal service and on-call. Go, React/TS, Kubernetes, Terraform.
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Feb 2013 – Jul 2021
Principal → Team Lead → Engineer · TeleSign
Fraud (SageMaker), billing modernization, IVR/SIP, self-service portal and prepaid wallet; led teams of 6–7. Python/Django/FastAPI, Angular, Redis, and more.
Stack
- TypeScript
- Node.js
- Go
- Python
- React
- Next.js
- Postgres
- AWS
- GCP
- Terraform / OpenTofu
- Kubernetes
- LLM / agents