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I’m Johnson Okoli, a results-driven full stack software engineer with roots in Nigeria and currently based in the UK. I’ve built scalable backends with Node.js, NestJS, Express, and real-time features using Socket.IO, while also crafting responsive frontends with React, Next.js, and Tailwind. My work spans fintech, real estate tech, and marketplace platforms, and I love translating complex requirements into robust, maintainable systems that perform well under load. I’ve led small teams, embraced Agile practices, and implemented CI/CD pipelines on AWS to accelerate delivery and improve code quality. I’m passionate about security, scalability, and clean architecture, and I enjoy mentoring teammates to grow their technical and collaborative skills.…I’m Johnson Okoli, a results-driven full stack software engineer with roots in Nigeria and currently based in the UK. I’ve built scalable backends with Node.js, NestJS, Express, and real-time features using Socket.IO, while also crafting responsive frontends with React, Next.js, and Tailwind. My work spans fintech, real estate tech, and marketplace platforms, and I love translating complex requirements into robust, maintainable systems that perform well under load. I’ve led small teams, embraced Agile practices, and implemented CI/CD pipelines on AWS to accelerate delivery and improve code quality. I’m passionate about security, scalability, and clean architecture, and I enjoy mentoring teammates to grow their technical and collaborative skills.

Johnson Okoli

Full Stack Developer, Front-End Developer, Back-End Developer, +2

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I’m Johnson Okoli, a results-driven full stack software engineer with roots in Nigeria and currently based in the UK. I’ve built scalable backends with Node.js, NestJS, Express, and real-time features using Socket.IO, while also crafting responsive frontends with React, Next.js, and Tailwind. My work spans fintech, real estate tech, and marketplace platforms, and I love translating complex requirements into robust, maintainable systems that perform well under load. I’ve led small teams, embraced Agile practices, and implemented CI/CD pipelines on AWS to accelerate delivery and improve code quality. I’m passionate about security, scalability, and clean architecture, and I enjoy mentoring teammates to grow their technical and collaborative skills.…I’m Johnson Okoli, a results-driven full stack software engineer with roots in Nigeria and currently based in the UK. I’ve built scalable backends with Node.js, NestJS, Express, and real-time features using Socket.IO, while also crafting responsive frontends with React, Next.js, and Tailwind. My work spans fintech, real estate tech, and marketplace platforms, and I love translating complex requirements into robust, maintainable systems that perform well under load. I’ve led small teams, embraced Agile practices, and implemented CI/CD pipelines on AWS to accelerate delivery and improve code quality. I’m passionate about security, scalability, and clean architecture, and I enjoy mentoring teammates to grow their technical and collaborative skills.

Available to hire

I’m Johnson Okoli, a results-driven full stack software engineer with roots in Nigeria and currently based in the UK. I’ve built scalable backends with Node.js, NestJS, Express, and real-time features using Socket.IO, while also crafting responsive frontends with React, Next.js, and Tailwind. My work spans fintech, real estate tech, and marketplace platforms, and I love translating complex requirements into robust, maintainable systems that perform well under load.

I’ve led small teams, embraced Agile practices, and implemented CI/CD pipelines on AWS to accelerate delivery and improve code quality. I’m passionate about security, scalability, and clean architecture, and I enjoy mentoring teammates to grow their technical and collaborative skills.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Language

English

Fluent

Igbo

Fluent

Yoruba

Fluent

Work Experience

Full Stack Software Developer — Lead Software Engineer at Nexta

August 1, 2025 - August 1, 2025

Led backend development for Nexta, a car inventory and auction platform, and contributed to frontend features using NestJS, Next.js, and Tailwind. Implemented real-time bidding and chat with Socket.IO, designed scalable ERD and database schema, integrated Firebase Authentication with role-based access, and added DDoS protection. Built seller inventory management with activity logs, pagination, and caching; integrated Stripe for payments (one-time and subscriptions) with invoicing; established AWS CI/CD with GitLab; standardized timezone handling and CSV import/export for cross-timezone data management; implemented real-time bidding, chat, and vehicle discussion comments.

Full Stack Software Developer — Lead Software Engineer at Turing

August 1, 2025 - August 1, 2025

Developed the backend for Nexta, a car inventory and auction platform, and contributed to frontend features using Nest.js, Next.js, and Tailwind CSS. The platform uses MongoDB with real-time bidding and chat updates via Socket.io. Led ERD and DB design for scalable inventory management. Integrated Firebase Authentication with role-based permissions and added throttling for DDoS protection. Built seller inventory management with activity logs, pagination, and caching. Implemented Stripe payments with one-time and subscription models, automated invoicing and reminders. Set up CI/CD on AWS with GitLab. Standardized timezone handling and CSV import/export. Implemented real-time bidding/chat and a comments module.

Full Stack Software Developer — Lead Software Engineer at Esoft Response

February 1, 2024 - February 1, 2024

Contributed across backend and frontend for UK-based remote projects, implementing scalable solutions, real-time updates, and robust testing practices in an Agile environment.

Full Stack Software Developer — Lead Software Engineer at EsSoft Response

February 1, 2024 - February 1, 2024

Full Stack Software Developer — Lead Software Engineer at Skillz System Ltd

January 1, 2023 - January 1, 2023

Led the development of bespoke systems including a Real Estate platform (ProTech) with property listings and fractional ownership, integrated PayPal and PayStack payments, wallet funding, cron jobs, and asset management. Managed a team of 5 with a focus on refactoring, TDD, Docker, CI/CD, Terraform, Agile, and documentation. Achieved ~30% improvement via re-engineering and ~40% by test-driven development; containerization and microservices improved reliability and deployment frequency.

Node.js Full Stack Developer — Software Developer at Minerva Technologies / Vpay

September 1, 2022 - September 1, 2022

Led backend for a fintech platform and real-time data queries for thousands of artworks. Built a robust payment system and integrated secure payment APIs, focusing on high reliability and low latency. Adopted SDLC best practices in Agile, tracked tasks with Jira, implemented Test Driven Design (Mocha/Chai) improving development speed and system efficiency. Implemented image identification/microservice for profile image uploads and participated in requirements gathering (50% contribution). Introduced microservices and containerization to improve performance.

Node / React Native / Flutter — Software Developer at SripixelBytes

October 1, 2021 - October 1, 2021

Collaborated in a 10-person team to build a lifestyle mobile app with multi-functional features (laundry, last-mile logistics, groceries, utility bills). Wrote server-side and client-side code (Node, HTML, CSS, React Native), implemented continuous identification/improvement approaches, and contributed to rapid iterations with Jira.

Node / React / React Native — Developer (Contract) at SripixelBytes

October 1, 2021 - October 1, 2021

Wrote 50% of server-side and client-side code for multiple projects using Node, HTML, CSS, and React Native. Collaborated with product managers to define MVPs, introduced continuous improvement practices, and contributed to architecture with microservices. Improved release velocity.

Node / React / React Native — Lead Software Developer (Remote) at Carrotsuite

October 1, 2021 - October 1, 2021

Built a SaaS web and mobile app for visitor and staff management. Led a team of 4 and delivered 3 bespoke eCommerce solutions. Implemented real-time notifications with Socket.IO. Wrote server-side and client-side code using Node.js, React, and React Native.

Node / React / HTML — Lead Software Developer at BrisStech

December 31, 2019 - December 31, 2019

Built School Student Management Software using React.js and Python; developed a multi-currency shopping cart with real-time Coinbase GraphQL data; implemented online pizza requests, student management, chat, and responsive websites; implemented CRUD APIs and architecture; contributed to coding standards and best practices.

Lead Software Developer at BrissTech

January 1, 2019 - November 15, 2025

Built School Student Management Software using React.js and Python; developed a multi-currency shopping cart with real-time Coinbase GraphQL currency updates; implemented e-commerce features, payments integration, chat, and other admin tools; established best practices and architecture.