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Omeje Emmanuel

@omejeemmanuel1

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Backend & AI Engineer building scalable APIs and production LLM systems.

Nigeria

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What I'm looking for

I’m looking to build and own backend architecture and production AI/LLM systems—high-performance APIs, microservices, and scalable cloud/DevOps pipelines—with measurable impact, strong engineering ownership, and collaboration across teams.

I’m a Backend & AI Engineer with 5+ years of experience designing and deploying scalable distributed systems across fintech and AI-driven platforms. I’m a founding-level engineer focused on backend architecture, cloud infrastructure, and production-grade AI systems that perform in real-world applications.

My work centers on high-performance APIs, microservices, and LLM-powered systems such as RAG and LangChain. I’ve built secure, scalable service backends (authentication, escrow payments, and workflow orchestration), integrated OpenAI-based evaluation and insight pipelines, and improved system performance through database optimization, caching, and refactoring monolithic services into modular architectures.

I also bring strong cloud and DevOps automation: leading AWS infrastructure, implementing CI/CD pipelines, containerized deployments with Docker, and reliable monitoring/backup practices for production stability. Across cross-functional and remote teams, I prioritize measurable impact—reducing latency (40%+), improving model selection efficiency (25%), and streamlining LLM evaluation runtime (180s → 70s per 1K samples)—while keeping engineering systems dependable and scalable.

Experience

Work history, roles, and key accomplishments

Current

Backend Engineer & DevOps

Current

Helpappafrica

Sep 2025 - Present (10 months)

Designed and deployed backend architecture for a services marketplace platform, building secure, scalable APIs for authentication, escrow payments, and job workflows. Led AWS cloud and production DevOps, including CI/CD and Docker-based deployments, monitoring, and database performance management.

NestJS Prisma PostgreSQL AWS CI CD Docker API Development Authentication Escrow Monitoring

Backend Software Engineer

Vester AI

Aug 2023 - Aug 2025 (2 years)

Architected and built backend infrastructure for an AI-powered startup evaluation and decision platform. Developed scalable APIs for application processing and AI-driven scoring using OpenAI systems, and optimized MongoDB queries and caching to reduce response latency by 40%+ while refactoring toward modular architecture.

OpenAI MongoDB Caching API Development Analytics Modular Architectures

LLM Engineer (Contract)

Turing Inc

Jan 2025 - Mar 2025 (2 months)

Built and optimized LLM training and evaluation pipelines using LangChain and PyTorch. Developed evaluation frameworks (accuracy, latency, bias) and reduced simulation runtime using query optimization and Redis caching, while improving integration reliability by enforcing API contracts.

Lang Chain PyTorch LLM Training LLM Evaluation Redis Query Optimization

Backend Engineer

Realalfa Finance

Jan 2024 - Jun 2024 (5 months)

Led backend delivery of a financial application under tight deadlines. Transformed Excel-based financial models into scalable backend systems and ensured data integrity, security, and compliance across financial workflows while mentoring junior engineers.

Backend Development Data Integrity Security Compliance Team Leadership Mentorship

Fullstack Engineer

Meristem

Jul 2023 - Oct 2023 (3 months)

Developed internal workflow systems using React and Node.js. Integrated MongoDB Atlas for real-time collaboration, working in an Agile environment to deliver iterative product improvements.

React Node MongoDB Atlas Agile Scrum

Software Engineer & IT Support

Kropmann Communications

Nov 2021 - Jun 2023 (1 year 7 months)

Developed server-side solutions and collaborated with frontend developers, designers, and other team members to integrate features and deliver cohesive user experiences. Optimized backend performance and participated in Agile sprint planning, reviews, and retrospectives.

Server Side Development Cross Functional Collaboration Agile Scrum Sprint Planning

Software Engineer

ALX Africa

Feb 2022 - Apr 2023 (1 year 2 months)

Designed and implemented applications using programming languages including Node.js, Python, and C++. Worked with SQL and NoSQL databases and developed automated tests to ensure software quality and reliability.

Node.Js Development Python C++SQL NoSQL Automation Testing Software Testing

Advanced Web Developer

Aptech Computer Education

May 2019 - Nov 2021 (2 years 6 months)

Developed complex, interactive web applications using front-end and back-end technologies. Collaborated with UI/UX designers, wrote clean and well-documented code, and followed best practices and coding standards to enhance user experiences.

Web Development Clean Code Documentation Best Practices

Education

Degrees, certifications, and relevant coursework

Enugu State University of Science and Technology

Computer Science

2016 - 2021

Studied computer science topics including data structures and algorithms, problem-solving, computer architecture, operating systems, compiler constructions, and software engineering.