We are HCLTech, one of the fastest-growing large tech companies in the world and home to 219,000+ people across 54 countries, supercharging progress through industry-leading capabilities centered around Digital, Engineering and Cloud.

The driving force behind that work, our people, are diverse, creative, and passionate, raising the bar for excellence on a regular basis. We, in turn, work hard to bring out the best in them as we strive to help them find their spark and become the best version of themselves that they can be.

At HCLTech Australia, we value the unique perspective and contributions of all individual and we actively encourage applications from Aboriginal and Torres Strait Islander people to apply for this role.

Are you ready to be an important part of this ever-transformational journey?

Location: Sydney

Senior .NET Technical Architect – Microservices & Cloud

About the Role

We are looking for a highly experienced Senior .NET Technical Architect to lead enterprise-scale transformation initiatives. You will be responsible for designing and delivering modern, cloud-native applications using microservices architecture, event-driven systems, and scalable cloud platforms.

This role combines architecture leadership, hands-on engineering, and mentoring, making it ideal for someone passionate about building high-performance, resilient systems.

Key Responsibilities

• Lead architecture, design, and end-to-end delivery of large-scale enterprise applications

• Drive microservices-based design using .NET Core, REST APIs, and event-driven architecture (Kafka/Streaming)

• Design and implement scalable, secure cloud solutions on AWS or Azure

• Collaborate with cross-functional teams to deliver transformation programs

• Provide technical leadership and mentoring to engineering teams

• Establish and enforce best practices (OOPS, SOLID, design patterns, secure coding)

• Build and optimize CI/CD pipelines using modern DevOps tools

• Ensure application observability, performance tuning, and monitoring

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  Must Have Skills & Experience

  • 10+ years of experience in .NET Core, microservices architecture, and REST APIs

  • Strong experience in event streaming platforms (Kafka or similar)

  • Expertise in cloud platforms (AWS or Azure) – Lambda, API Gateway, ECS/EKS, S3, RDS, IAM

  • Hands-on experience with Docker, Kubernetes, GitHub Actions / CI-CD pipelines

  • Strong frontend exposure with JavaScript, HTML/CSS, React or NextJS (preferred)

  • Experience with observability tools such as Splunk, AppDynamics (or similar)

  • Strong database experience with SQL (SQL Server/Oracle) and NoSQL (MongoDB or similar)

  • Proven ability to lead, mentor, and drive modern engineering practices
    Good to Have

    • Exposure to mobile application development (Android/iOS)

    • Experience working in regulated or large enterprise environments

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    Bonus

    • Experience using AI-assisted development tools (Copilot, Cursor, Claude, etc.)

    • Passion for driving AI-enabled engineering practices and code reviews

 Why Us 

We are one of the fastest-growing large tech companies in the world, with offices in 50+ countries across the globe and 219,000 employees. 

• Our company is extremely diverse with 165 nationalities represented.

• We offer the opportunity to work with colleagues across the globe. 

• We offer a virtual-first work environment, promoting a good work-life integration and real flexibility. 

• We offer comprehensive benefits for all employees.  

• We are a certified great place to work and a top employer in 17 countries, offering a positive work environment that values employee recognition and respect. 

Equality & Opportunity for All

Representing 165 nationalities across the globe, we pride ourselves on being an equal opportunity employer, committed to providing equal employment opportunities to all applicants and employees regardless of race, religion, sex, colour, age, national origin, pregnancy, sexual orientation, physical disability or genetic information, military or veteran status, Aboriginal and Torres Strait Islander people or any other protected classification, in accordance with federal, state, and/or local law.

Candidate Data Privacy Notice | HCL Technologies

We are committed to respecting your privacy and for the protection of your personal data. Your personal data will be collected and processed in line with our candidate privacy notice: https://www.hcltech.com/candidate-privacy-notice. This privacy notice will help you to understand what personal data we collect about you, how we use this personal data, and what rights you have regarding your personal data.  By replying to this email or submitting any personal data to HCLTech, you acknowledge that you have read and understood the candidate privacy notice and  have  provided your consent to the processing of your data for recruitment purposes as described in the privacy notice”.