Ravinder Thirumala, Developer in Sydney, New South Wales, Australia
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Ravinder Thirumala

Verified Expert  in Engineering

Software Developer

Sydney, New South Wales, Australia
Toptal Member Since
October 11, 2022

Ravinder is a senior back-end developer experienced in migrating legacy applications to the cloud and working with API gateways and access management frameworks. He focuses on designing and developing scalable enterprise applications using microservice architecture. Ravinder has experience with object-oriented design principles, enterprise integration patterns, microservices design patterns, and cloud platform services.


Singtel Optus
Red Hat OpenShift, Spring Boot, Microservices, API Gateways, Apache Kafka, APIs...
Macquarie Group
API Gateways, OAuth 2, Microservices, Java, Kubernetes, Google Cloud, APIs...
API Gateways, Java, Microservices, Amazon Web Services (AWS), APIs...




Preferred Environment

Kubernetes, Cloud, Docker, Java, Microservices, APIs

The most amazing...

...projects I've worked on are implementing multi-factor authentication and identity solutions for various customers.

Work Experience

Integration Architect

2021 - PRESENT
Singtel Optus
  • Designed and maintained system integrations and components and developed solution designs.
  • Headed end-to-end design and development of an integration solution.
  • Collaborated on vendor and stakeholder management.
Technologies: Red Hat OpenShift, Spring Boot, Microservices, API Gateways, Apache Kafka, APIs, AWS Lambda, PostgreSQL, Amazon Simple Queue Service (SQS), Serverless Architecture, JavaScript

API Consultant

2020 - 2021
Macquarie Group
  • Designed and developed customer identity and access management (CIAM) microservices.
  • Improved API performance by monitoring and analyzing API metrics.
  • Implemented the authentication based on OAuth 2 for microservices.
  • Developed Next.js-based UI for customer authentication.
Technologies: API Gateways, OAuth 2, Microservices, Java, Kubernetes, Google Cloud, APIs, Node.js, Next.js, React, Spring, Containers, REST

Integration Architect

2018 - 2020
  • Managed the API gateway, design, and development of cloud-native applications.
  • Mentored junior team members, provided code review, and created API policy templates and shared flows.
  • Contributed to setting up cloud CI/CD pipelines for microservices and designed and developed a testing framework that included integration and smoke tests.
Technologies: API Gateways, Java, Microservices, Amazon Web Services (AWS), APIs, CI/CD Pipelines

CIAM Software

Implemented the customer identity and access management software for bank customers using microservices based on Spring Boot, the Apache Cassandra database, and OAuth 2. I also deployed all the identity microservices to a Kubernetes cluster. CIAM software enables organizations to securely store and manage customer information and profile data and control customer access to applications and services.


Java, JavaScript, Scala, TypeScript


Spring, OAuth 2, Next.js, Spring MVC, Spring Boot


REST APIs, API Development, Node.js, React


Keycloak, Amazon Simple Queue Service (SQS)


Test-driven Development (TDD), Design Patterns, REST, Microservices, Serverless Architecture


Kubernetes, Docker, AWS Lambda, Google Cloud Platform (GCP), Amazon Web Services (AWS), Apache Kafka, Red Hat OpenShift


APIs, Back-end, Containers, Distributed Systems, API Gateways, Design, AWS Transit Gateway, Full-stack, Amazon API Gateway, Architecture, Software Architecture, Cloud, Apache Cassandra, CI/CD Pipelines


MySQL, MongoDB, PostgreSQL, Google Cloud

2004 - 2007

Master's Degree in Computer Science

Indian Institute of Technology Madras - Chennai, India


Certified Kubernetes Application Developer (CKAD)

Linux Foundation


Professional Cloud Architect


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