Sajeer Riyaf

Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
See more

Language

English
Fluent
Sinhala, Sinhalese
Advanced
Tamil
Intermediate

Work Experience

Software Development Engineer at Amazon - Prime Video
October 1, 2022 - October 27, 2025
Designed and developed highly scalable front-end components using ReactJS, improved application performance and maintainability. Collaborated with cross-functional teams to enhance customer experience with seamless video playback and personalized content recommendations. Led migration of a critical legacy system to a modern NodeJS and Spring Boot stack, ensuring zero downtime and 30% efficiency gains. Implemented advanced caching mechanisms and optimized API endpoints to reduce average response time by 40%. Enhanced CI/CD pipelines with automated testing and deployment processes, reducing deployment cycles. Launched features such as dynamic subtitles and multi-language support, driving 15% increase in user engagement.
Part-time Software Developer at Independent / Client Projects
September 1, 2022 - September 1, 2022
Built custom PCF components for PowerApps to enhance functionality. Developed responsive UI components using ReactJS and TypeScript.
Software Engineer at WSO2
August 1, 2021 - August 1, 2021
Full-stack developer for Choreo, a low-code platform for creating and managing applications. Contributed to visual programming features and platform differentiation. Worked on microservices architecture using NodeJS, Ballerina, React with Redux, and Kubernetes.
Intern at MoveWorlde Logistics Solution
December 1, 2019 - December 1, 2019
Developed microservices in Go to improve service efficiency. Built an anomaly detection system for card payments using Apache Kafka and Cassandra DB. Researched geo-position accuracy improvements and mapping.
Open Source Contributor at Google Summer of Code
August 31, 2019 - August 31, 2019
Contributed to open source projects under Google Summer of Code 2019.
Part-time Software Developer
August 1, 2021 - September 1, 2022
Built custom PCF components for PowerApps to enhance functionality. Developed responsive UI components with ReactJS and TypeScript.
Software Engineer at WSO2
February 1, 2020 - August 1, 2021
Full-stack developer for Chorus O, a low-code platform for creating and managing applications.
Intern & Research Engineer at PickMe
June 1, 2018 - December 1, 2019
Developed microservices in Go to improve service efficiency. Built an anomaly detection system for card payments using Apache Kafka and Cassandra DB. Conducted research on geo-position accuracy enhancements and map matching.
Open Source Contributor at Google Summer of Code 2019
May 1, 2019 - August 1, 2019
Contributed to open-source projects under the Google Summer of Code program.
Blockchain / Crypto Project at Hash Beats
January 1, 2019 - December 31, 2019
Blockchain for recording medical history of patients. Implemented using ReactJS, NodeJS, Hyperledger Fabric, Docker, Kubernetes; built a permissioned blockchain to securely share patient data among doctors, hospitals, and labs while ensuring privacy.

Education

MSc in Computer Science at Nottingham Trent University
September 1, 2021 - September 1, 2022
BSc (Hons) in Computer Science and Engineering at University of Moratuwa
December 1, 2015 - February 1, 2020
MSc in Computer Science at Nottingham Trent University
September 1, 2021 - September 1, 2022
BSc (Hons) in Computer Science and Engineering at University of Moratuwa
December 1, 2015 - February 1, 2020

Qualifications

Dean's List (1st and 4th Semesters)
January 11, 2030 - October 27, 2025
GCE A/L Examinations - Top 100 Sri Lanka (2014)
January 11, 2030 - October 27, 2025
Ranked Top 100 in Sri Lanka GCE A/L Examinations
January 1, 2014 - January 1, 2014
Dean's List (1st & 4th Semesters)
January 11, 2030 - April 13, 2026

Industry Experience

Software & Internet, Media & Entertainment, Professional Services, Education