A leading fast-fashion e-commerce platform with a strong online presence, serving 18M active customers and boasting $2.21B in sales.

• Led the design and development of multiple enterprise-level AWS Serverless solutions, managing millions of requests, supporting over 5 million active users.

• Architected backend infrastructure solutions using IaC (Infrastructure as Code) with AWS CDK to provision and manage AWS resources, resulting in automated and accelerated deployments.

• Spearheaded the successful integration of PLT products into TikTok, enabling in-app products purchases, driving revenue growth through expanded market reach.

• Designed and implemented an automated product categorization solution to enhance targeted marketing strategies, resulting in increased conversion rates by accurately matching customers with relevant products.

• Initiated the refactor of the warehouse management service from a monolithic architecture to a microservices-based system, resulting in improved scalability and maintainability.

• Led the efforts in upgrading legacy dependencies to modern, native solutions.

• Conducted unit, integration, and infrastructure tests with 98% test coverage, and oversaw end-to-end testing by analyzing logs, monitoring queues, and validating system functionality.

• Enhanced CI/CD workflows to enable ticket tracking, accelerating release cycles and ensuring consistent delivery by providing visibility.

• Implemented automated monitoring and incident response workflows across services, and monitored post-release activities.

• Led cross-functional collaboration, including conducting meetings, writing design documents, securing stakeholder buy-in, and aligning technical strategies with business goals to remove blockers and ensure efficient feature delivery.

• Conducted code reviews, mentored and onboarded engineers, collaborated with DevOps to streamline deployment pipelines, and collaborated with the QA team to ensure high product reliability.

A unicorn providing tech-enabled mass transit solutions across intercity, intracity, B2B and B2G sectors.

• Designed and implemented a generic payment flow, decoupling existing implementations and restructuring the payment system, including database schema re-design and code refactor, to improve scalability and flexibility, resulting in reduction in new payment service integration development time by 90%.

• Integrated payment services (M-PESA and EBANX) for 500K active users.

• Developed backend features for monolithic APIs and microservices, including routes, controllers, validations, versioning, serialization and documentation.

• Conducted rigorous unit testing with Mocha and Chai, API testing using Docker and Postman, End-to-End testing using Android Dev Toolbox and Chrome DevTools.

• Ensured high code quality by achieving 95%+ code coverage, eliminating code smells, and resolving quality issues.

• Monitored deployments using GCloud and Kubernetes (Lens), including error resolution via pods logs and SSH access.

• Collaborated with other engineers in code reviews and system design discussions for SWVL's monolithic API (430k LOC) and Payment Microservice.

• Facilitated communication and issue resolution for frontend and test engineers.

• Prioritized issues based on urgency, dependency, availability, requirements, and level of collaboration

• Enhanced SWVL's internal library to allow developers to switch message brokers without code changes.

• Enhanced SWVL’s SQS wrapper library (WTSQS) to support RabbitMQ and Apache Kafka, allowing seamless broker switching via environment variables.

• Conducted research on messaging systems (ActiveMQ, RabbitMQ, Kafka) and communication protocols (REST, STOMP, AMQP), producing detailed comparisons including the differences in architectures, features and limitations.

• Authored integration documentation and developed components for WTKafka and WTRabbitMQ.

• Achieved 95%+ code test coverage.

[ Tintash Team ]

Authentication and Authorization Service:

• Designed and architected an authentication and authorization service using Go and Gorilla Mux.

• Implemented role-based access control (RBAC) for granular resource permissions management.

• Implemented OAuth 2.0, session storage, and JWT token authentication using Google OAuth and Firestore.

• Reduced login session processing time by implementing session caching with Redis.

• Deployed and tested the AuthService backend on GCP and Heroku, and the frontend on Firebase, ensuring seamless integration and reliability across all service layers.

Live-Sessions Platform:

• Led the development of a robust, real-time, multi-provider live-sessions platform using the Vonage video API, serving as the primary front-end engineer for the project.

• Designed and developed a live-conferencing platform that allows for real-time collaboration. (ReactJS, NodeJS)

• Developed the front-end client application. (React, TypeScript)

• Implemented global state management. (React Context API)

• Utilized REST APIs for communication between the frontend and backend. (Axios, ExpressJS)

• Employed Tailwind CSS to craft a visually appealing and responsive design.

• Collaborated with backend engineers to to establish API endpoints and request-response structure.

Full Stack Web Development:

• Web Languages: [ JavaScript, TypeScript ]

• Front-end: [ React, Redux ]

• Back-end: [ Node, Express, Nest ]

• Database: [ MySQL, MongoDB, Firebase ]

• Styling: [ Tailwind, Bootstrap ]

Other Services:

• Software Development: [ C#, JAVA ]

• Mobile App Development: [ React Native, Java ]

• Database Design: [ ERD, Schema ]

• UI/UX Design: [ Adobe XD, FIGMA ]

• Graphic Design: [ Photoshop, Illustrator ]

• Video Editing: [ Premiere Pro ]