Open to opportunities

Oladapo Kolawole Osagie

@oladapokolawoleosagi

I build scalable Python and .NET microservices as a backend developer and software architect for reliable, secure transactions.

Nigeria

Message

What I'm looking for

I’m looking for a team where I can architect microservices and backend APIs, improve transaction reliability and performance, and own cloud deployments—while collaborating closely to ship secure, well-tested systems.

I’m a backend developer and software architect focused on scalable, high-reliability systems. I’ve built and optimized microservices, APIs, and background processing—cutting request response times by 40% with a Celery-based async task system and improving checkout latency by ~30% through serializer-based validation.

I’ve also led platform redevelopment and financial architecture work: redesigning legacy systems into microservices with gRPC and REST, building multi-currency wallet and crypto debit flows with transaction safety, and integrating KYC/helpdesk/payment APIs. From high-risk incident recovery to strengthening test coverage beyond 85% and managing end-to-end deployments on Google Cloud, I prioritize correctness, maintainability, and delivery you can trust.

Experience

Work history, roles, and key accomplishments

Current

Backend Developer

Current

GiriToday

Jun 2025 - Present (1 year)

Implemented a Celery-based asynchronous task system to handle notifications and background events, cutting request response times by 40%. Built and optimized order creation and checkout workflows, reducing checkout latency by ~30% while improving reliability with comprehensive tests and managed deployments on Google Cloud.

Django Django REST Framework Celery Cloud SQL Cloud Storage PostgreSQL Redis Docker

Current

Software Architect

Current

WittyTech

Jan 2024 - Present (2 years 5 months)

Acted as Software Architect for a multi-currency financial platform, redesigning a legacy Django/JavaScript monolith into microservices using gRPC and REST. Designed and implemented multi-currency wallet and crypto debit systems, improved transaction reliability, and led recovery during a high-risk financial incident to prevent loss of funds.

C .NET gRPC REST APIs Microservices Domain Driven Design Clean Architecture API Integration Node.Js Incident Recovery

Backend Developer

SSAF Logistics

May 2023 - Dec 2023 (7 months)

Delivered reliable microservice backends by implementing unit/integration and Postman testing strategies to increase code coverage. Built RESTful APIs with FastAPI, improved performance with Redis caching, and enhanced scalability and resilience using RabbitMQ messaging alongside CI/CD automation.

fastAPI Python RESTful APIs Redis RabbitMQ CI CD Unit Testing Integration Testing Postman Tests

Software Engineer Intern

EdSofta

Jun 2021 - Apr 2023 (1 year 10 months)

Built a C# WPF test application as an internship project within 5 weeks, demonstrating strong delivery under pressure. Improved maintainability and stability by documenting the codebase (reducing onboarding time by 25%), implementing robust error handling, and fixing a critical shutdown bug that increased the customer base by 17%.

C WPF Software Documentation Error Handling Debugging Root Cause Analysis desktop application development