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adetunji john

@adetunjijohn

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Full-stack Software and DevOps Engineer with 5 years’ experience building B2C/B2B products for international clients.

Nigeria

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What I'm looking for

I’m seeking a new challenge to build novel B2C and B2B products—ship reliable mobile/web features, support international clients, and grow within teams that value fast delivery, quality, and measurable impact.

I’m a full stack Software and DevOps Engineer with 5 years of experience, building mobile and web solutions for international teams and clients. I focus on developing, improving, and supporting products that reliably serve users at scale.

At Centrify Platforms (Dec 2023 - Present), I developed government approved mobile applications used for collecting millions of Naira in internal revenue, while supporting agents daily and shipping feature updates, bug fixes, and new requirements. Previously, at Vascon Solutions and other roles, I delivered Android and web platforms that improved speed and efficiency by ~70%, reduced service disruptions by 99%, and saved operational costs by cutting fault resolution time by over 60%.

I’m especially excited to seek a new challenge to build novel B2C and B2B products. I bring hands-on expertise across React Native, Vue/Nuxt, React/Next, Node.js, PHP/Laravel, MongoDB, and supporting infrastructure with AWS and Digital Ocean, plus experience training junior developers.

Experience

Work history, roles, and key accomplishments

Current

Mobile Applications Developer

Current

Centrify Platforms

Dec 2023 - Present (2 years 6 months)

Developed government-approved mobile applications for 3+ state governments in Nigeria used to collect millions of Naira in internal revenue. Provided daily agent support and delivered ongoing mobile app updates, feature changes, and bug fixes.

MongoDB React Native PHP Laravel AWS Figma

Current

Software Engineer

Current

Vascon Solutions

Jul 2022 - Present (3 years 11 months)

Trained 3 junior developers and built mobile applications for a state Internal Revenue Service from scratch, improving speed and efficiency by ~70% for millions of users. Managed server and database development and support activities, reducing downtime/service disruptions by 99%.

Vue.Js React Native Postman REST API Development Mobile App Development Database Management server management

Current

Software Engineer (Freelance)

Current

NedstarCorp

Jan 2021 - Present (5 years 5 months)

Designed and developed 12 customized web applications for 10 businesses and startups, aligning delivery to client requirements. Built multi-platform B2C mobile applications for 100K+ users and managed websites/web apps to keep content and systems up to date.

MongoDB PHP Postman Web Development Mobile App Development

Full-stack Developer

Supreme Logic Integrated Solutions

Aug 2022 - Aug 2023 (1 year)

Created and modified 3 web applications for 3 client organizations, including REST API solutions for affiliated mobile and ecommerce applications. Built large-scale customer platforms (e.g., coupon generation and sales) used by millions of users.

Vue.Js PHP Laravel AWS Postman REST APIs Web Application Development

Software Engineer

Vascon Solutions

Jan 2019 - Jan 2021 (2 years)

Developed an Android app to manage 300+ field technicians, saving millions in operational costs and cutting electricity fault resolution time by over 60%. Built a B2C application for ~3.2M+ customers (about 90% success) and customized SugarCRM to match business needs.

PHP Java Kotlin Laravel Android Development Vue.Js SugarCRM Customer Support Leadership

Software Engineer Intern

Vascon Solutions

Jun 2018 - Jan 2019 (7 months)

Performed data entry and maintenance across three enterprise applications to keep information accurate. Developed two native Android mobile applications on the frontend using Kotlin and implemented UI according to provided designs.

PHP Java Kotlin Laravel Android Development Vue.Js Frontend