Hello, I'm
Olusegun Emmanuel
Full-Stack & DevOps Engineer — building scalable web and mobile applications, managing production infrastructure, and leading engineering teams.
Engineering Software That Scales
I'm a Full-Stack & DevOps Engineer with 5+ years of experience building scalable web and mobile applications, managing production infrastructure, and delivering end-to-end software solutions across multiple industries.
Currently serving as Software Manager at Smash Technology, where I grew from an entry-level developer to Lead Software Engineer and later Software Manager through consistent delivery, technical leadership, and product execution. I lead engineering teams across backend, frontend, mobile, and DevOps operations.
I collaborate closely with Product Managers, Designers, QA teams, and cross-functional stakeholders to transform product ideas and Figma designs into scalable production-ready applications. My skills were sharpened through ALX Africa's rigorous software engineering program and HNG's competitive engineering tracks.
Technologies I Work With
A comprehensive toolkit spanning backend, frontend, mobile, DevOps, and infrastructure.
Backend Development
Frontend & Mobile
Databases & Messaging
DevOps & Infrastructure
Security & Compliance
No Code & SEO
Projects I've Shipped
Production applications spanning real estate, fintech, ride-hailing, social networking, and enterprise systems.
AFTA
Full-stack platform with web and mobile applications. Built end-to-end from Figma designs to production deployment with DevOps infrastructure.
Qiimeet
Social networking platform with web and mobile apps. Features real-time interactions, user profiles, and cross-platform mobile experience on Google Play.
Smash Apartments
Real estate platform for apartment listings, bookings, and property management. Full-stack with admin dashboard and booking engine.
Gemsore
Ecommerce platform for jewelry and accessories. Features product listings, shopping cart, and secure checkout.
SmashRemit
Fintech remittance platform enabling seamless cross-border money transfers. Web app with mobile application in development.
Also built & maintain:
My Journey
From entry-level developer to Software Manager — a story of consistent delivery, technical leadership, and growth.
Software Manager
Smash Technology · On-Site
- Lead engineering teams across backend, frontend, mobile, and DevOps operations
- Manage product development workflows from planning through to production deployment
- Oversee scalable system architecture and engineering implementation for 13+ production applications
- Collaborate with Product Managers, Designers, QA teams, and stakeholders to deliver scalable products
Lead Software Engineer
Smash Technology · On-Site
- Built and maintained backend systems using FastAPI and Flask, frontend apps with React.js and Next.js
- Managed mobile application development using React Native with Google Play Store deployments
- Implemented CI/CD pipelines, configured Docker containers, Nginx servers, and Linux infrastructure
- Conducted code reviews, developer mentorship, and engineering process improvements
Software Engineer Intern
HNG Nigeria · Remote
- Developed AI-powered video and audio summarization systems with cross-functional teams
- Built and maintained backend APIs, integrated Google OAuth and third-party authentication
- Improved backend reliability, maintainability, and performance in agile sprints
Backend Developer
Epistimis · USA (Remote)
- Maintained and optimized backend systems and APIs for scalability
- Refactored codebases and improved documentation and collaboration processes
- Facilitated engineering standups and assisted with software release planning
Software Engineer Intern
ALX Africa — The Room Fellowship · Kenya (Remote)
- Designed and implemented RESTful APIs for real estate platforms
- Deployed and monitored production services with debugging and testing
- Participated in pull request reviews, engineering planning, and agile workflows
ICT Department
National Lottery Regulatory Commission · Abuja, Nigeria
- Managed and monitored network infrastructure and data center operations
- Troubleshot server, network, and hardware issues for enterprise systems
- Maintained availability and security of IT infrastructure
Let's Build Something Together
Have a project in mind?
I'm always open to discussing new projects, technical leadership roles, or opportunities to build impactful software. Whether it's a full-stack application, mobile app, API architecture, or DevOps infrastructure — let's talk.