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Mmesomachukwu Osele

@mmesomachukwuosele

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Platform Engineer focused on scalable, secure backend systems and high-performance APIs.

Canada

Message

What I'm looking for

I seek backend/platform roles where I can design scalable systems, lead architecture, use cloud-native tooling, and mentor teams in a collaborative, growth-focused environment.

I am a Platform Engineer with 4+ years of experience designing and delivering scalable, secure backend systems for production use.

I have built microservices and RESTful APIs in Java and Python, integrating PostgreSQL, Redis caching, OAuth2 and JWT for secure, high-performance platforms.

My work includes leading backend architecture for a crowdfunding platform (Raizfund) with integrated payments and an AI-powered real-time query system leveraging vector embeddings and cloud infrastructure on AWS/GCP.

I mentor junior engineers, drive CI/CD and Docker-based deployments, and focus on measurable improvements—API performance gains of 40% and a 30% reduction in production issues.

Experience

Work history, roles, and key accomplishments

Current

Platform Engineer

Current

Avantgrobel

Jan 2022 - Present (4 years)

Architected and implemented microservices-based backend systems for a crowdfunding platform and an AI query platform, improving API performance by 40% and reducing production issues by 30% while supporting thousands of daily users.

Java Python Spring Boot PostgreSQL Redis Microservices Docker CI CD AWS GCP

Junior Java Software Engineer

King Cabana

Jan 2019 - Dec 2021 (2 years 11 months)

Developed secure backend endpoints and OAuth 2.0 social login, created database schemas and conducted code reviews and unit testing to improve reliability and maintainability.

Java OAuth 2.0 REST APIs SQL Unit Testing Code Review Database Design Debugging

Software Engineering Intern

Desire Health

Jan 2018 - Dec 2019 (1 year 11 months)

Implemented backend endpoints for registration, login, and password recovery and designed database architecture to ensure data integrity and performance.

Java REST APIs Database Design Backend Development Collaboration Debugging

Education

Degrees, certifications, and relevant coursework

Centennial College

Certificate, Marketing Research & Analytics

2023 - 2023

Completed a Marketing Research & Analytics program at Centennial College focused on quantitative and qualitative research methods for marketing decision-making.