Olani Baissa Gerba

Software Developer at Vroom

Designed and implemented a machine learning model for car price prediction using Python, scikit-learn, Flask, and pandas, improving prediction accuracy by 25%. Built complete ML pipelines including automated preprocessing, feature selection, and retraining workflows. Developed APIs for real-time car price estimation integrated into the platform for seamless user interaction. Conducted advanced web scraping with Scrapy for data collection and preprocessing. Automated model retraining pipelines using cron jobs to ensure continuous improvement.

System Developer and Customizer at Commercial Bank of Ethiopia

Integrated mobile payment services such as Telebirr and M-Pesa into banking platforms using Spring Boot, JavaEE, and REST API, increasing mobile banking users by 20%. Streamlined backend transaction processing via Microservices Architecture, reducing errors by 15%. Analyzed large transactional datasets to detect anomalies and contributed to designing automated fraud detection mechanisms.

Full Stack Developer at Freelance

Developed scalable web applications using Spring Boot, MongoDB, and React.js, improving performance by 30%. Created dynamic front-end interfaces with HTML, CSS, and JavaScript to enhance user experience. Conducted thorough testing with JUnit, Mockito, and Postman, ensuring reliability and reducing response times by 20%.

Software Developer at Vroom

Designed and implemented a multi-platform ad publishing system processing 80,000+ ads; built scalable APIs using Laravel and Flask for data ingestion, validation, and normalization; created a custom integration layer for automated ad synchronization, deduplication, and format standardization across external portals; engineered an AI-powered vehicle valuation system using Flask and scikit-learn to provide real-time price estimations; developed a high-performance web scraping pipeline to collect, clean, and validate large-scale automotive data; built an end-to-end AI model pipeline including preprocessing, feature engineering, and model training workflows; led AWS cloud deployment, managing EC2, S3, RDS, and infrastructure scaling to ensure reliability and performance.

System Developer and Customizer at Commercial Bank of Ethiopia

Integrated mobile payment services (Telebirr, M-Pesa) into banking platforms using Spring Boot, JavaEE, and REST APIs, increasing mobile banking adoption. Streamlined backend transaction processing with Microservices Architecture, reducing errors by 15%. Analyzed large-scale transactional data to detect anomalies and contributed to the conceptual design of automated fraud detection mechanisms.

Freelance Full Stack Developer at Freelance

Developed scalable web applications using Spring Boot, MongoDB, React.js, improving performance by 30%. Created dynamic front-end interfaces with HTML, CSS, and JavaScript, enhancing user experience. Conducted rigorous testing with JUnit and Mockito, ensuring reliability and reducing response times by 20%.

Software Developer at Vroom

Designed and implemented a multi-platform ad publishing system handling 80,000+ ads and distributing across external portals. Built scalable APIs for data ingestion, validation, and normalization; created an automated ad synchronization and deduplication layer. Implemented an AI-powered vehicle valuation system using Flask, scikit-learn, and data pipelines for real-time price estimation. Developed a high-performance web scraping pipeline and a full AI model lifecycle (preprocessing, feature engineering, training). Led AWS cloud deployment with EC2, S3, and RDS, ensuring reliability and scalable performance.

System Developer and Customizer at Commercial Bank of Ethiopia

Integrated mobile payment services (Telebirr, M-Pesa) into banking platforms using Spring Boot, Java EE, and REST APIs, increasing mobile banking users. Streamlined backend transaction processing with Microservices Architecture, reducing errors. Analyzed large-scale transactional data to contribute to the design of automated fraud detection mechanisms.