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I am a Senior .NET Full-Stack Developer and Azure Cloud Engineer with 13+ years of experience designing and delivering scalable, secure enterprise solutions across government and large-scale organisations. I specialise in secure-by-design systems, CI/CD pipelines, and modernising legacy platforms using .NET and cloud-native services. I take ownership from concept through to production delivery and enjoy collaborating with cross-functional teams to solve complex business problems.…I am a Senior .NET Full-Stack Developer and Azure Cloud Engineer with 13+ years of experience designing and delivering scalable, secure enterprise solutions across government and large-scale organisations. I specialise in secure-by-design systems, CI/CD pipelines, and modernising legacy platforms using .NET and cloud-native services. I take ownership from concept through to production delivery and enjoy collaborating with cross-functional teams to solve complex business problems.

Arun Kumar

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

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I am a Senior .NET Full-Stack Developer and Azure Cloud Engineer with 13+ years of experience designing and delivering scalable, secure enterprise solutions across government and large-scale organisations. I specialise in secure-by-design systems, CI/CD pipelines, and modernising legacy platforms using .NET and cloud-native services. I take ownership from concept through to production delivery and enjoy collaborating with cross-functional teams to solve complex business problems.…I am a Senior .NET Full-Stack Developer and Azure Cloud Engineer with 13+ years of experience designing and delivering scalable, secure enterprise solutions across government and large-scale organisations. I specialise in secure-by-design systems, CI/CD pipelines, and modernising legacy platforms using .NET and cloud-native services. I take ownership from concept through to production delivery and enjoy collaborating with cross-functional teams to solve complex business problems.

Available to hire

I am a Senior .NET Full-Stack Developer and Azure Cloud Engineer with 13+ years of experience designing and delivering scalable, secure enterprise solutions across government and large-scale organisations.

I specialise in secure-by-design systems, CI/CD pipelines, and modernising legacy platforms using .NET and cloud-native services. I take ownership from concept through to production delivery and enjoy collaborating with cross-functional teams to solve complex business problems.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

English

Fluent

Work Experience

Full-Stack Developer (Contract) at ActewAGL

January 1, 2026 - Present

Designed and implemented an event-driven notification system using Azure Service Bus and Azure Functions to enable scalable messaging for billing and customer alerts. Developed time-of-use alerts with Sitecore 10.2, ASP.NET, and .NET 8. Delivered full-stack integrations between .NET APIs and Vue.js front-end applications. Maintained CI/CD pipelines with Azure DevOps and ensured consistent deployments across Dev, Test, and Production. Implemented secure API authentication using OAuth2 and JWT. Advocated for secure-by-design architectures, DI, testable code, and performance-oriented SQL Server queries.

Full-Stack Developer (Contract) at RACQ

July 1, 2024 - January 1, 2026

Two engagements: designed cloud-based APIs and integration services using Azure Functions and APIM; developed front-end with Vue 3 and Sitecore JSS; integrated Sitecore 9.x features; extended discount logic; provided ongoing support and led architectural decisions across distributed systems.

Full-Stack Developer (Contract) at Australian Retirement Trust

July 1, 2023 - June 1, 2024

Redesigned investment performance dashboards using React and Highcharts; built lifetime pension page with real-time data updates using React, ASP.NET, and Sitecore 9.2. Supported and maintained multiple enterprise applications in production environments.

Full-Stack Developer (Contract) at RACQ

October 1, 2019 - July 1, 2023

Designed and implemented cloud-based APIs and integration services using Azure Functions and APIM to support high-volume member interactions. Migrated 1.75M member accounts to Okta, integrating Sitecore 8.2 with Okta through .NET Core APIs. Delivered new insurance forms using Sitecore JSS with Vue 3; consolidated insurance discount logic across front-end and API layers. Translated business requirements into scalable cloud architectures; contributed to solution architecture and system design decisions; provided ongoing application support and production issue resolution in distributed systems.

Senior Consultant at NTT (Australia)

October 1, 2017 - September 1, 2019

Architected cross-platform ecommerce system for MOCO Food Services using Episerver, Angular, and Xamarin with NCR backend integration and CommBank payment processing. Performed Sitecore upgrade from 8.2 to 9.1.1 for Unitywater; redesigned BUSSQ superannuation website using Sitecore SXA with persona-based personalisation and Microsoft Dynamics CRM lead generation. Mentored developers and guided client teams on engineering practices and architecture decisions.

Senior Consultant at NTT

October 1, 2017 - September 1, 2019

Architected cross-platform ecommerce system for MOCO Food Services using Episerver, Angular, and Xamarin with NCR backend integration and Commonwealth Bank payment processing. Performed full Sitecore upgrade from 8.2 to 9.1.1 for Unitywater across environments (DEV/UAT/PROD). Redesigned BUSSQ superannuation site using Sitecore SXA and mentored developers in best engineering practices.

Consultant at Avanade (Australia)

December 1, 2015 - October 1, 2019

Led cloud migration of ATOOnline to AWS, configuring load balancers, blueprinting VMs, and setting up Akamai CDN. Designed PowerShell deployment framework and configured TFS Release Manager for automated deployments across environments. Built an environment monitoring dashboard using Vue.js and .NET REST APIs with full TFS integration for deployment tracking.

Technical Developer at Reading Room (Australia)

July 1, 2014 - May 1, 2017

Redesigned Sunshine Coast Council corporate website, migrating content to Sitecore 8 with Angular front-end and MongoDB integration. Built automated translating and interpreting service system for the Department of Immigration and Border Protection. Developed RSPCA Queensland website with pet adoption search and registration features; created ASIC MoneySmart tools site.

Software Engineer at TPS (Transaction Processing Systems)

June 1, 2011 - June 1, 2012

Developed utility bill payment middleware processing BPAY transactions from ATMs, internet banking, and mobile banking; built transaction processing services handling real-time payment flows; created vehicle management system for TachyGraphe Systems.