About me

HARSHA JAYAMANNA

NSW, Australia
harsha.kj89[@]gmail.com | www.harshajayamanna.com

10+ years of experience building secure, scalable, and high-performance systems with Java, Spring, Python, AWS, GCP, and Azure across domains such as AI, Telco, Education, HR, and IoT.

Experience

SOFTWARE ENGINEER | COGNIZANT SERVIAN JANUARY 2022 - PRESENT

Sydney, Australia (Optus & BHP)

• Develop new APIs using Java, Spring, Kotlin, and microservices.
• Designed and built a scalable LLM-powered chat platform for ServiceNow.
• Implemented a Retrieval-Augmented Generation (RAG) pipeline for contextual data.
• Developed backend chat APIs using Python, Azure, and LangChain.
• Monitor chatbot performance and resolve API errors to increase automation.

SOFTWARE DEVELOPER | AKRONYM OCTOBER 2019 - DECEMBER 2021

Singapore

• Designed software platform for smart coffee machine operations.
• Implemented Backend API using Java, Spring, Hibernate, and MySQL.
• Implemented AWS infrastructure including ECS, Lambda (Nodejs), and CI/CD.
• Developed dashboard applications using Angular, JavaScript, HTML, and CSS.

Technical Skills

Languages & Frameworks:	Java, Kotlin, Python, JavaScript, Spring Framework, React
Databases:	SQL, MySQL, MongoDB, Microsoft SQL Server
Cloud & Tools:	AWS, Azure, Git, Neovim, Visual Studio Code, IntelliJ

Education & Certifications

Bachelor of Computer Science - University of Colombo School of Computing (2014)

Certifications: AWS Certified Developer - Associate, Scrum Master Certified (SMC™)

Award: 2022 Q3 Digital AI Squad Individual Award