Oluwasegun Olateju
@oluwasegunolateju
Full-stack web and mobile developer building secure apps with clean APIs and modern frontends.
What I'm looking for
I’m a FullStack Web & Mobile App Developer based in Lagos, Nigeria, focused on shipping end-to-end products—from UI to backend APIs and app updates. I enjoy turning client needs into working features quickly, then improving them with clean, maintainable code.
In my freelance and full-time work, I’ve built and upgraded mobile apps for real use cases. One example is a mobile app for keeping and retrieving items in a lab—where I integrated a backend API for login and storage, added a search module, and connected to an Arduino bluetooth device to display position.
On the web side, I design and develop client websites and web apps, then implement both frontend and backend functionality. I’ve worked with React, NextJS, VueJS, NuxtJs, and Laravel to replicate modules from web to mobile, fix bugs, and extend features, including API development and websocket integration.
What motivates me is building products that are reliable, user-friendly, and easy to evolve. I bring practical experience across mobile and web stacks—so teams can move faster from design to production and keep apps stable as requirements grow.
Experience
Work history, roles, and key accomplishments
Full-Stack Mobile Developer
Cavidel Limited
Aug 2024 - Present (1 year 8 months)
Upgraded company mobile apps to the latest Android version, built apps for clients, and fixed bugs. Updated and developed backend APIs, and replicated web modules for mobile.
Website Designer
Power
Jan 2019 - Present (7 years 3 months)
Designed a company website to showcase services and products. Added photo and video galleries to present product content.
Web Developer
GuruSystems Technology
Mar 2023 - Jun 2024 (1 year 3 months)
Designed websites and web applications for clients, and resolved bugs and added new features. Built front-end and back-end components using React/NextJS/Vue/Nuxt and Laravel, including API development.
Web Developer
Nicargo Tech
Apr 2022 - Feb 2023 (10 months)
Designed websites and web apps for clients, fixed bugs, and added new features. Developed APIs and implemented front-end and back-end functionality using NextJS/NuxtJS and Laravel.
Flutter Mobile Developer
CoinGlobe
Feb 2022 - Mar 2022 (1 month)
Designed the UI and developed the mobile app using Flutter. Connected the mobile app to the web app API.
Vue Laravel Web Developer
CoinGlobe
Dec 2021 - Jan 2022 (1 month)
Designed and built the website frontend using VueJS, TailwindCSS, and InertiaJS. Developed the Laravel backend, integrated websockets, and created APIs for third parties and the mobile app.
Business Website Developer
MilSolution
Aug 2019 - Sep 2019 (1 month)
Designed a business website and implemented contact and quote forms. Added homepage animations to enhance the user experience.
Mobile App Developer
Sampl App
Dec 2025 - Present (4 months)
Built a lab mobile app to keep and retrieve items, including Bluetooth connection to an Arduino device for displaying position. Integrated backend APIs for login and item storage/retrieval and implemented an in-app search module; uploaded the app to the app store.
Education
Degrees, certifications, and relevant coursework
Yaba College of Technology
National Diploma, Computer Engineering
2019 - 2022
Earned a National Diploma in Computer Engineering at Yaba College of Technology from 2019 to 2022.
Ademikeye Computer Institute
Computer Desktop Publishing, Desktop Publishing
2010 - 2011
Completed a Computer Desktop Publishing program at Ademikeye Computer Institute in 2010–2011.
Muslim College
Senior School Certificate, General Education
2007 - 2010
Completed Senior School education at Muslim College, earning a Senior School Certificate between 2007 and 2010.
Availability
Location
Authorized to work in
Job categories
Interested in hiring Oluwasegun?
You can contact Oluwasegun and 90k+ other talented remote workers on Himalayas.
Message OluwasegunFind your dream job
Sign up now and join over 100,000 remote workers who receive personalized job alerts, curated job matches, and more for free!
