Johnson Okoro
Software Engineer
I'm a Senior Software Engineer with over 7 years of experience building both web and mobile applications. While I love crafting beautiful user interfaces, I'm also passionate about architecting scalable backend services, as well as streamlining deployment processes. I’m extremely proficient at getting the job done both on time and efficiently, with different software tools, hence why I’d say I’m tool agnostic and technically diverse. I’ve worked with several notable tech organizations, helping deliver solutions to complex projects on schedule to meet their goals.
Work Experience
My professional journey across various companies and roles
While working part-time at Nyxion, I played a significant role in developing two of the company’s flagship products (Kin and Blackbox Therapy). Over the past few months, I’ve contributed to building these products, which are now in the process of getting approved on the Apple Store and Google Play Store. I’m excited about the journey and am now looking for a full-time role. Plus, you can find detailed examples of the products I’ve worked on in my portfolio, showcasing the impact and quality of my work.
I worked with one of the company’s e-commerce platforms (www.luminskin.com). A few of my notable accomplishments while working with them includes: revamping the product listing page with a big focus on making it faster and easier to use. At the same time, I led a full transition from Shopify to a custom Next.js setup, which gave us more flexibility and saved long-term costs. I also led the rebuilding and upkeep of the cart and checkout system, which was essential across all major products. Thanks to that, conversion rates went up. On top of that, I managed building and integrating the fulfillment system so we could handle international shipping, even for partners who didn’t have that capability. Overall, I made sure the fulfillment process stayed reliable, scalable, and efficient. Altogether, these accomplishments show I can drive key improvements, making me a strong fit for the next challenge.
During my time at ESX, I really focused on making buying movie tickets online a breeze. I completely overhauled the checkout process and made sure everything worked seamlessly on mobile where most of our users were booking. Beyond that, I tackled the legacy code, cleaning things up so the app ran faster and became easier for the team to handle. Knowing my work boosted sales and left customers with a smoother experience was a highlight. I’d bring that same care for user experience, performance, and team collaboration to this role.
Working at Coursera was incredible because I got to play a role in a platform that’s truly transforming lives through education. I helped deliver new features that made learning easier and more engaging for millions of students around the world. One thing I really appreciated was the collaborative environment, I worked side by side with talented design, product, and backend teams, ensuring we delivered exactly what learners needed. I kept a sharp focus on maintaining top-notch code quality and learned so much about building applications that scale to millions globally. I know that experience would translate into building impactful, high-quality solutions in this role too.
At OpenInvest, I worked across both web and mobile, building financial tools that needed to be rock solid. I didn’t just focus on the front end, I worked on the full stack, making sure both what users saw and what happened behind the scenes was reliable. I introduced new engineering practices that made the whole team more productive and streamlined our process. Because performance and security are critical in fintech, I spent a lot of time improving both the user experience and backend efficiency, identifying bottlenecks wherever they popped up. I also contributed to documentation and helped integrate new technologies that kept us ahead. It was my first deep dive into fintech, and I loved the challenge of building user-friendly interfaces while ensuring the backend was solid. This full-stack experience in a high-stakes environment is something I’m excited to bring to the next challenge.
Featured Projects
A selection of my most impactful work
Mobile Apps at Nyxion






Get In Touch
Have a project in mind or want to discuss opportunities? I'd love to hear from you.