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John Olatubosun is a seasoned engineer with 5+ years of building experience. His major strengths are in backend development (Node.js, Nest.js, FastAPI and GraphQL), cloud engineering (Linux, Nginx, Docker, Kubernetes, AWS), AI Engineering (Vector Database, RAG, AI Agents, Model Fine-Tuning), frontend development (React, Next.js), and mobile development (React Native). He has a proven track record of leading teams and building high-performance and efficient systems…John Olatubosun is a seasoned engineer with 5+ years of building experience. His major strengths are in backend development (Node.js, Nest.js, FastAPI and GraphQL), cloud engineering (Linux, Nginx, Docker, Kubernetes, AWS), AI Engineering (Vector Database, RAG, AI Agents, Model Fine-Tuning), frontend development (React, Next.js), and mobile development (React Native). He has a proven track record of leading teams and building high-performance and efficient systems

John

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John Olatubosun is a seasoned engineer with 5+ years of building experience. His major strengths are in backend development (Node.js, Nest.js, FastAPI and GraphQL), cloud engineering (Linux, Nginx, Docker, Kubernetes, AWS), AI Engineering (Vector Database, RAG, AI Agents, Model Fine-Tuning), frontend development (React, Next.js), and mobile development (React Native). He has a proven track record of leading teams and building high-performance and efficient systems…John Olatubosun is a seasoned engineer with 5+ years of building experience. His major strengths are in backend development (Node.js, Nest.js, FastAPI and GraphQL), cloud engineering (Linux, Nginx, Docker, Kubernetes, AWS), AI Engineering (Vector Database, RAG, AI Agents, Model Fine-Tuning), frontend development (React, Next.js), and mobile development (React Native). He has a proven track record of leading teams and building high-performance and efficient systems

Available to hire

John Olatubosun is a seasoned engineer with 5+ years of building experience. His major strengths are in backend development (Node.js, Nest.js, FastAPI and GraphQL), cloud engineering (Linux, Nginx, Docker, Kubernetes, AWS), AI Engineering (Vector Database, RAG, AI Agents, Model Fine-Tuning), frontend development (React, Next.js), and mobile development (React Native). He has a proven track record of leading teams and building high-performance and efficient systems

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

English

Fluent

Work Experience

Software Engineer I at Left Lane Technologies

September 1, 2025 - September 23, 2025

Led onboarding conversations and gathered feedback to shape product direction; planned and executed marketing strategies; implemented real-time speech-to-text, text-to-speech, and messaging with end-to-end encryption; built a vector database with similarity search for sermon matching and discovery and AI chat functionalities; developed a RabbitMQ/FastAPI microservice for efficient task processing; led a five-person engineering team delivering high-quality products.

Software Engineer at Grey Invent Technologies

June 1, 2025 - Present

Developed a cross-platform fintech platform Gaia AI; built a full-stack application with Node.js, Prisma, Redis, PostgreSQL, Next.js, and Tailwind CSS; designed onboarding flows, AI-enabled user experiences, and Stripe-based payments; contributed to architecture and AWS deployment pipelines.

AI Platform Engineer at Gaia AI

June 1, 2025 - Present

Led development of an AI-driven startup network platform; built a full-stack app with Node.js, Prisma, Redis, PostgreSQL, Next.js, and Tailwind CSS; implemented onboarding experiences, AI chat, and semantic search using a vector database; established microservices with RabbitMQ and FastAPI for scalable task processing; integrated Stripe payments and admin UI.