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I am a Principal Engineer and Technical Leader with 25+ years of international experience designing and delivering large-scale, cloud-native, secure and highly available platforms across HealthTech, Telco, Logistics, and Payments. I specialise in modernising legacy systems into distributed, event-driven microservices using Java, Spring Boot, Golang, Kafka, DDD, and multi-cloud deployments across AWS, GCP, and Azure. I have a proven track record architecting mission-critical healthcare systems, building SaaS platforms serving millions of users, and driving engineering excellence through observability, CI/CD automation, performance optimisation, and scalable data architectures. I also apply AI engineering (RAG, vector DBs, open-source LLMs) to augment automation, reduce operational overhead, and enable intelligent decision-support capabilities. I am known for architectural leadership, mentoring, cross-functional collaboration, and delivering high-impact solutions in complex, regulated environments.…I am a Principal Engineer and Technical Leader with 25+ years of international experience designing and delivering large-scale, cloud-native, secure and highly available platforms across HealthTech, Telco, Logistics, and Payments. I specialise in modernising legacy systems into distributed, event-driven microservices using Java, Spring Boot, Golang, Kafka, DDD, and multi-cloud deployments across AWS, GCP, and Azure. I have a proven track record architecting mission-critical healthcare systems, building SaaS platforms serving millions of users, and driving engineering excellence through observability, CI/CD automation, performance optimisation, and scalable data architectures. I also apply AI engineering (RAG, vector DBs, open-source LLMs) to augment automation, reduce operational overhead, and enable intelligent decision-support capabilities. I am known for architectural leadership, mentoring, cross-functional collaboration, and delivering high-impact solutions in complex, regulated environments.

Sudarshana Gurusinghe

Full Stack Developer, Cloud Developer, Back-End Developer, +2

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I am a Principal Engineer and Technical Leader with 25+ years of international experience designing and delivering large-scale, cloud-native, secure and highly available platforms across HealthTech, Telco, Logistics, and Payments. I specialise in modernising legacy systems into distributed, event-driven microservices using Java, Spring Boot, Golang, Kafka, DDD, and multi-cloud deployments across AWS, GCP, and Azure. I have a proven track record architecting mission-critical healthcare systems, building SaaS platforms serving millions of users, and driving engineering excellence through observability, CI/CD automation, performance optimisation, and scalable data architectures. I also apply AI engineering (RAG, vector DBs, open-source LLMs) to augment automation, reduce operational overhead, and enable intelligent decision-support capabilities. I am known for architectural leadership, mentoring, cross-functional collaboration, and delivering high-impact solutions in complex, regulated environments.…I am a Principal Engineer and Technical Leader with 25+ years of international experience designing and delivering large-scale, cloud-native, secure and highly available platforms across HealthTech, Telco, Logistics, and Payments. I specialise in modernising legacy systems into distributed, event-driven microservices using Java, Spring Boot, Golang, Kafka, DDD, and multi-cloud deployments across AWS, GCP, and Azure. I have a proven track record architecting mission-critical healthcare systems, building SaaS platforms serving millions of users, and driving engineering excellence through observability, CI/CD automation, performance optimisation, and scalable data architectures. I also apply AI engineering (RAG, vector DBs, open-source LLMs) to augment automation, reduce operational overhead, and enable intelligent decision-support capabilities. I am known for architectural leadership, mentoring, cross-functional collaboration, and delivering high-impact solutions in complex, regulated environments.

Available to hire

I am a Principal Engineer and Technical Leader with 25+ years of international experience designing and delivering large-scale, cloud-native, secure and highly available platforms across HealthTech, Telco, Logistics, and Payments. I specialise in modernising legacy systems into distributed, event-driven microservices using Java, Spring Boot, Golang, Kafka, DDD, and multi-cloud deployments across AWS, GCP, and Azure.

I have a proven track record architecting mission-critical healthcare systems, building SaaS platforms serving millions of users, and driving engineering excellence through observability, CI/CD automation, performance optimisation, and scalable data architectures. I also apply AI engineering (RAG, vector DBs, open-source LLMs) to augment automation, reduce operational overhead, and enable intelligent decision-support capabilities. I am known for architectural leadership, mentoring, cross-functional collaboration, and delivering high-impact solutions in complex, regulated environments.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

English

Fluent

Work Experience

Senior Software Engineer at Easy Go

July 1, 2025 - Present

Architected enterprise-grade, event-driven systems using Kafka and Confluent Schema Registry, enabling safe schema evolution and scalable client integrations. Designed a cross-system data synchronisation framework leveraging AWS SQS/SNS to decouple services and increase operational resilience. Built a cloud-based data migration pipeline using AWS S3 and Go, enabling seamless transfer of millions of records with zero downtime and strong data integrity validation. Implemented Infrastructure-as-Code with Terraform, improving consistency and reducing deployment overhead.

Chief Software Engineer / Chief Architect at Circles.Life

March 1, 2021 - July 1, 2025

Led the end-to-end re-architecture of Circles' digital telco platform from monolith to cloud-native microservices. Architected and optimised mobile-first backend services supporting native iOS/Android applications across multiple markets. Designed customer migration strategies ensuring minimal downtime and smooth transitions to next-gen platforms. Introduced end-to-end observability, CI/CD pipelines, and automated QA, reducing production defects and accelerating release cycles. Mentored globally distributed engineering teams and explored AI-enabled product enhancements.

Head of Research & Development at Cantel Lanka / Aexis Medical

November 1, 2018 - February 1, 2021

Led architecture and delivery of mission-critical healthcare SaaS solutions for infection prevention and clinical compliance. Modernised legacy modules into cloud-integrated, web-first applications, greatly improving performance and usability for operational hospitals. Developed secure, scalable workflows for frontline medical staff, aligned with strict regulatory and data integrity requirements. Implemented automation, secure-by-design principles, and observability to uplift platform reliability. Partnered with Product and Clinical teams to align technical direction with business and patient-care outcomes. Introduced git-based CI/CD pipeline and DevOps practices into the process.

Senior Software Architect at Cambio Software Engineering

June 1, 2008 - June 1, 2018

Designed core modules for hospital ERP systems (Medication Management, Patient Management), improving clinical workflows and reducing processing friction. Delivered HL7 integrations and OpenEHR-based models to support interoperability across hospital systems. Modernised legacy 'Spider' platform and improved performance of the new 'IX3' platform, achieving 30% faster response times. Produced pre-sales prototypes and technical demos, accelerating enterprise deal closures.

Principal Software Engineer / Senior IT Specialist at Code Connextion

March 1, 2006 - May 1, 2008

Led development of a Single Customer View platform for a global shipping client, consolidating customer data across fragmented systems. Built a scalable e-commerce platform on WebSphere, integrating advanced search features and secure payment flows.

Lead Software Engineer at Cantel Lanka / Aexis Medical

July 1, 2002 - March 1, 2006

Led architecture and delivery of healthcare SaaS modules, modernising legacy systems and building secure, web-first clinical workflows with automation and DevOps practices.