Karthikeyan Thirunavukarasu

• Serving as a senior individual contributor and consultant on long-term freelance engagements for
international clients.
• Designing and delivering cloud-native microservices using Java 8-17, Spring Boot, and Quarkus.
• Architecting scalable backend platforms for credit reporting, payments, and financial data processing.
• Leading technical design discussions and advising clients on cloud-native best practices.
• Automating infrastructure provisioning and deployments using Terraform across AWS and GCP.
• Implementing asynchronous processing, schedulers, and batch workflows for high-volume systems.
• Ensuring high code quality through unit testing, code reviews, and continuous integration.
• Working closely with product managers, QA, and DevOps teams in Agile/Scrum environments.
• Supporting production systems, monitoring performance, and resolving critical incidents.
• Operating effectively across time zones with UK- and US-based stakeholders.

• Worked on enterprise-grade search platforms supporting global logistics operations.
• Enhanced free-text search accuracy using Azure Cognitive Search and Text Analytics.
• Collaborated with cross-functional teams to deliver features in short Agile iterations.
• Participated in sprint planning, retrospectives, and release activities.

• Developed highly available and fault-tolerant microservices hosted on AWS.
• Designed and maintained infrastructure-as-code using Terraform.
• Delivered change requests and enhancements with a strong focus on stability and quality.
• Worked directly with clients to analyse requirements and propose scalable solutions.

• Progressed from Associate Engineer to Senior and Lead roles across multiple global organisations.
• Delivered enterprise Java applications within Banking, Wealth Management, and Enterprise domains.
• Led backend development, mentored junior engineers, and supported on-site/offshore delivery
models.
• Worked extensively with legacy systems and modernisation initiatives.