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Joshua Ezekiel

@joshuaezekiel

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Lead Full Stack & AI Integrations Engineer driving scalable AI products.

Nigeria

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What I'm looking for

I seek senior engineering roles building scalable AI-integrated products with strong DevOps practices, collaborative teams, and opportunities to mentor and drive architecture.

I am a Lead Full Stack and AI Integrations Engineer focused on building scalable, production-ready AI applications and developer platforms. I combine strong backend engineering with modern frontend practices to deliver end-to-end solutions.

I've led architectural upgrades, implemented Graph-RAG systems with Neo4j and LLMs, and reduced backend response times by 40% through asynchronous FastAPI services. I also revamped DevOps workflows, provisioning cloud infrastructure and automating CI/CD to cut setup time by 60%.

My work spans airline, payments, and AI platform domains where I designed conversational booking bots, migrated GPU workloads for cost efficiency, and automated knowledge-graph creation for non-technical users. I prioritize reliable deployments, observability, and security in production systems.

I mentor junior engineers and program participants, build interactive experimentation platforms, and deliver measurable product improvements that boost user productivity and system resilience.

Experience

Work history, roles, and key accomplishments

Current

Lead Full Stack & AI Integrations Engineer

Current

SeqHub Analytics LLC

Jun 2024 - Present (1 year 5 months)

Leading full-stack architecture upgrades and AI agent integrations, implementing Graph-RAG systems with Neo4j and LLMs and reducing backend response times by 40% via asynchronous FastAPI services.

fastAPI Python Neo4j Graph RAG LLM WebSockets AWS EC2 CI CD Docker

Full Stack & AI Integrations Engineer

Valuejet Airline

Jan 2023 - Jun 2024 (1 year 5 months)

Maintained and enhanced full-stack airline systems and deployed an AI-powered reservation and booking bot, improving booking response times and reliability through refactoring and automated testing.

Java Spring Boot AI Agents Automated Testing DevOps Docker

Artificial Intelligence Engineer

Ditech Solutions

Jul 2023 - Oct 2023 (3 months)

Optimized AI infrastructure and enhanced an agentic RAG platform by automating entity generation into Neo4j knowledge graphs, cutting document parsing times to under 3 minutes and lowering GPU costs.

RagFlow Neo4j RAG AWS Knowledge Graphs Python DevOps

Lead Full Stack Engineer

Fairsure Payment Solutions

Jan 2022 - Jan 2023 (1 year)

Led development of multiple payment products (C#, Java, React) and managed containerized VPS infrastructure, streamlining CI/CD and monitoring to reduce downtime for financial services.