Mojtaba Zali

• Leading an Agile team of six members in key projects, including collaboration with Deutsche Bahn, utilising Ruby on Rails, React, Python, PostgreSQL and Redis throughout the entire development cycle. • Established APM to pinpoint bottlenecks, improve caching, facilitate targeted refactoring, and migrate to Lambda microservices, optimising EC2 usage and achieving a 27% cost reduction. • Transformed CI/CD practices using GitHub and Capistrano, enabling fully automated deployment.

• Created LaSeR-Bench, a Rust-based OLTP benchmark framework, reducing tail latency by up to 15% compared to the standard OLTPBench. • Established microservices architecture on Kubernetes with a MariaDB Multi-Master setup with MaxScale cluster for enhanced scalability. • Contributed to miniHive, a high-performance engine compiling SQL queries into physical query plans for MapReduce jobs, boosting Hadoop execution efficiency using C++ and Python.

• Architected and implemented a service-oriented solution, leveraging Ruby on Rails, React, PostgreSQL, Redis, and Solr, to efficiently organise over 10 million scientific documents nationwide. • Enhanced data security protocols across current and legacy projects, reducing security vulnerabilities by 25% and ensuring confidentiality and integrity of sensitive scientific information. • Guided junior developers through mentorship, conducted code reviews to ensure adherence to best practices.

• Collaborated in developing and maintaining user interfaces using Ruby on Rails and Angular. • Engaged in the requirement engineering process, collaborating with cross-functional teams to gather, analyse, and refine project requirements for effective solution development.

• Developed a robust report generator system, leveraging PHP and Zend Framework, delivering comprehensive and efficient reporting solutions. • Performed data cleaning and mining tasks utilising Python, ensuring data accuracy and reliability to support informed decision-making.