Abdulganiyy Balogun

Software Engineer

Fiverr Freelancers

Mar 2025 - Current (1 year 2 months)

Software Engineer

Servant

Oct 2024 - Mar 2025 (6 months)

Migrated a legacy SuiteCRM system to a modern, full-stack application using NestJS, Next.js, and PostgreSQL, significantly improving maintainability and performance. Replaced legacy MySQL queries with a Prisma-powered data layer, reducing technical debt and accelerating development velocity by 50%. Implemented a robust role- and permission-based access control system using NestJS guards, enabling granular user management aligned with business rules. Integrated Amazon S3 for scalable file storage and developed a templated email service with Handlebars, enhancing communication workflows. Set up secure, cookie-based JWT authentication, improving session management and application security. Introduced observability with Sentry and Prometheus, r

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Software Engineer

Accountable Techserve

Mar 2023 - Jan 2024 (11 months)

Built a robust accounting and reporting system using Express.js, Next.js, and GraphQL with a MongoDB backend, automating financial data aggregation and reconciliation, reducing manual processes by 50%. Developed real-time financial dashboards, improving reporting speed by 40% and enhancing the financial decision-making process for executives. Designed and implemented secure GraphQL APIs for interacting with banking services and payment gateways, ensuring data integrity and compliance with industry regulations. Optimized the MongoDB database for high-frequency financial transactions, improving query performance by 30%.

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Lead Developer

Corsity

Jan 2021 - Dec 2022 (2 years)

Led the development of a cross-platform learning management system (LMS) using React Native and Firebase, resulting in a 20% increase in student retention and seamless mobile/web course access. Enhanced engagement by integrating live video streaming and interactive quizzes, leading to a 25% rise in course completion rates. Optimized course content delivery by leveraging AWS CloudFront, reducing video buffering times by 40%.

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Full Stack Developer

SimpleBuy

Nov 2019 - Dec 2020 (1 year 2 months)

Built a React-based eCommerce platform, integrating Stripe and PayPal payment gateways, which increased transaction volume by 35% and improved user checkout experience. Reduced page load times by 50% by optimizing API calls, implementing caching strategies, and using code-splitting techniques, enhancing customer satisfaction. Led a migration to a microservices architecture on AWS, improving system scalability and fault tolerance, resulting in a 20% boost in operational uptime.

Abdulganiyy Balogun

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