I'm Sahba Changizi.

Building tools to help turn customer success into company success

• Boosted customer satisfaction by collaborating with engineering, product and support teams in identifying needs and solving problems.
• Wrote +100 unit tests to verify the functionality of user interfaces, backend processing, and connectivity.
• Migrated legacy codebase to modern technology stack, reducing code size by 40% and improving performance.

One of the world’s leading youth travel brands

• Improved customer experience by 70% by designing, developing and executing automation scripts using testing tools and creating detailed and well-structured test plan.
• Scaled systems and improved data retrieval times by 75% through implementation of MongoDB and NoSQL.
• Led Agile development team using Scrum, resulting in improved collaboration and on-time, on-budget delivery of high-quality software.

Helping dry cleaners be more efficient

• Implemented continuous integration and delivery pipeline using Git.
• Designed and implemented RESTful API using Flask and Docker.
• Optimized the rendering speed of a high-traffic web application by implementing lazy loading and code splitting techniques, resulting in a 30% reduction in page load time.

Modernise the software available to automotive businesses

• Use debugging skills to find out the bugs and problems related to the performance of the system and successfully reduce latency by 30%.
• Develop and implement strategies for migration, consolidation, and upgrade of system components.
• Saved company more than £ 200k in yearly operating costs by putting in-development software through testing during the earlier stages of the cycle.

Banking software provider

• Produced and reviewed enterprise-level system design documentation, including XML schemas, WSDLs, Use Cases, Software Architecture Documentation, Service Mapping (i.e., map service schema to backend source systems), Consumer Guide (i.e., end-user documentation), and transition documentation to support the team.
• Successfully optimized the codebase, improved the application response time by 25%.
• Developed and implemented highly scalable and maintainable applications using cutting-edge technologies like Spring Boot, Hibernate and Prime Faces.

IT Services and IT consulting

• Successfully debugged and resolved complex system issues resulting in a 10% increase in system uptime.
• Implemented new features using PHP, which resulted in a 50% increase in user engagement.
• Trained and mentored junior developers on best practices in PHP development, resulting in their promotion to senior developer roles.

The thesis subject "A robust tongue shape model from ultrasound recordings of normal and impaired speech" focuses on developing a method for accurately capturing tongue movements during speech using ultrasound imaging. This research has important implications for understanding and treating speech disorders, as well as for advancing our knowledge of the mechanics of normal speech production. The study was published in the prestigious journal ASA The Journal of the Acoustical Society of America, which highlights the significance and impact of the findings. The publication showcases the effectiveness of the developed model in capturing tongue shape and movement in both normal and impaired speech, demonstrating the potential for its application in clinical settings. Overall, this research represents a significant contribution to the field of speech science and has important implications for improving our understanding and treatment of speech disorders.

I possess a diverse set of technical skills, ranging from web development to mobile app development, and from database management to cloud computing. I am proficient in programming languages such as JavaScript, Python, Ruby, Java, and PHP, and I have extensive experience in frontend development using HTML, CSS, React, Angular, and Vue. Additionally, I am experienced in backend development with Node.js, Express.js, Flask, Ruby on Rails, Laravel, and in database management with MySQL, PostgreSQL, Oracle, and MongoDB. I am well-versed in using various tools such as Git, Apache, Nginx, AWS, Azure, and Google Cloud Platform, and I have experience in developing and consuming RESTful APIs, as well as SOAP. I am familiar with containerization tools like Docker and Kubernetes, and I have experience working with GraphQL, React Native, Kotlin, Jira, and Figma. Furthermore, I have expertise in data warehousing with Snowflake, and I am knowledgeable about Apache Kafka and Typescript.

• React
• Java
• Javascript
• Angular
• PHP
• Python