Kerlos G.
Cairo, Egypt
Top Rated Plus · Upwork
Cairo, Egypt

Kerlos
G.

Senior Full Stack Architect · Next.js · SaaS · AI

I build high-performance, scalable applications that hold up under real pressure — from FinTech APIs to AI-integrated SaaS platforms, turning complex requirements into clean production code.

Get in Touch
Kerlos G.
100%
Job Success
5+
Years Experience
5.0★
Average Rating
What I solve
Performance
Slow MVP? I optimize load times and database queries until your app is fast under real load.
AI Integration
Adding LLMs and AI features into your existing TypeScript stack cleanly and reliably.
Scale
NestJS/Node backend struggling? I architect systems designed to handle real user growth.
Tech Stack
Frontend
Next.jsReactTypeScriptTailwind CSSRedux / Zustand
Backend
Node.jsNestJSPostgreSQLMongoDBGraphQLWebSockets
Infrastructure
AWSDockerKubernetesCI/CDVercel
AI & Integrations
LLM / AI AppsAI ChatbotsTwilio APIREST / GraphQL APIs
Client Voices
“

Your expertise in TypeScript, React.js, and Next.js has been outstanding, and your progress has been impressive. I have truly enjoyed working with you and appreciate your excellent contributions.

Verified Client on Upwork
“

Kerlos is a very talented programmer. I really enjoyed working with him. He advanced our project greatly and consistently brought strong technical thinking to every challenge.

Verified Client on Upwork
“

Kerlos has been an incredible source of assistance, completing every task with ease. I started giving him increasingly challenging tasks just to test his limits — he delivered every time.

Verified Client on Upwork
“

He worked on the project for over a year and a half. A dedicated professional who stays committed throughout the full engagement — not just the early stages.

Verified Client on Upwork
Client Reviews
Committed to Quality
Clean, production-ready code that holds up long after delivery.
Collaborative
I work with your team, not just for it — clear communication throughout.
Reliable
Deadlines respected. No surprises. Consistent delivery on every project.

Let's build something.

Available for new projects and long-term engagements.

EN — FluentAR — Native