Abdurrahman Kareem

Experience

• 

  Sysbeams

  Jan 2019 - Jun 2019

  Software Engineer Intern

  -Contributed to back-end development using Node.js, focusing on creating RESTful APIs to ensure seamless integration between front-end and back-end systems.-Participated in developing the user interface using ES6 JavaScript, Bootstrap, CSS, and HTML.-Engaged in comprehensive testing and debugging, identifying and resolving critical bugs, which led to a 35% improvement in system stability and a 25% reduction in user-reported issues.-Assisted in creating technical documentation for the system, resulting in a 40% reduction in onboarding time for new developers and a 30% improvement in overall code maintainability. Show less

• 

  Sysbeams

  Jan 2021 - Dec 2023

  -Conducted thorough code reviews, reducing bugs by 30% and improving code maintainability.-Trained junior engineers, boosting their productivity by 50% within 6 months.-Collaborated with 15 engineers to design and implement a microservice monitoring tool using Node.js, PostgreSQL, ASP.NET Core, Redis, and RabbitMQ.-Led the design and implmentation of an API gateway for central authentication, reducing latency by 25% and enhancing security across microservices with Node.js.-Deployed and managed microservices with Docker, Docker Compose, Nginx, and Google Cloud Platform, ensuring high availability and reducing system downtime by 25%.-Configured CI/CD pipelines using Azure DevOps.-Synchronized data between services via Google Pub/Sub and monitored deployments with Sentry and Kibana.-Led a team of 5 engineers to develop a high-impact Learning Management System.-Successfully collaborated on a Self-Enrollment Portal for the Office of the Accountant General of Nigeria, cutting enrollment processing time by 40% and increasing user satisfaction by 25%.Enhanced security in the Enrollment system by integrating fingerprint scanners and webcams, improving user verification accuracy by 35%.-Contributed to the design and implementation of a comprehensive University Management System, increasing administrative efficiency by 40% and streamlining student management processes.-Implemented security measures like SSL/TLS encryption and user authentication, reducing security vulnerabilities by 50% and protecting over 30,000 customer records. Show less -Developed a resilient mobile application as part of a team, extending the open-source ODK Collect framework, which resulted in a 50% reduction in data collection time.-Collaborated with high-performing engineers to develop a microservice-based data aggregation system, leveraging event-driven architecture to enhance data processing speed by 30%.-Wrote tests using Jest, Mocha, and Chai to ensure code quality and reliability.-Played a pivotal role in designing and implementing a sophisticated HR system, revolutionizing training, appraisal, and staff loan processes, leading to a 40% increase in employee satisfaction.-Architected and designed database schemas in collaboration with the back-end team.-Contributed to the development of a comprehensive web application, API, and user interface over Microsoft Dynamics NAV, improving user efficiency by 35%.-Managed database queries efficiently using Sequelize ORM, Prisma, and TypeORM.-Contributed significantly to end-to-end development processes, from architecture and database design to CI/CD implementation and provided technical support to ensure smooth and efficient operations. Show less

  • Intermediate Software Engineer

    Jul 2022 - Dec 2023

  • Junior Software Engineer

    Jan 2021 - Jun 2022
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  AMTIL Inc.

  Dec 2023 - now

  Senior Software Engineer

  - Spearheading the architecture, design, and implementation of system features, ensuring alignment with project goals and client needs while leveraging agile methodologies.-Championing the integration of third-party tools such as Firebase, Notion, and Cloudinary, significantly enhancing application capabilities.-Refactoring approximately 75% of the legacy code base to align with modern development standards, significantly improving performance and maintainability by utilizing newer versions of NestJS and PostgreSQL.-Leveraging the Jest framework to implement unit tests for the back-end, ensuring code reliability and robustness.-Collaborating closely with the QA team to conduct thorough testing and analysis of product features, resulting in a 40% decrease in post-launch bugs and a 30% improvement in overall customer satisfaction. Show less