Ciaran Callaghan
Staff Engineer at Stealth AI Startup
Leinster, Ireland
Summary
👤
Senior🎓
Top SchoolCiaran Callaghan is a Senior Software Development Engineer with nine years of AWS-focused experience, progressing from graduate Cloud Support Associate to SDE at Amazon Web Services. He specializes in serverless architectures—especially Lambda, API Gateway and Cognito, where he has served as a Subject Matter Expert—and routinely troubleshoots and architects customer solutions across core AWS services. Certified as an AWS Solutions Architect Associate and pursuing the Professional level, he blends deep operational support experience with hands-on development. Notable recognitions include Dublin Site Engineer of the Year (2020) and rapid internal progression through multiple AWS teams. Based in Leinster, Ireland, he pairs formal software engineering training from Dublin City University with practical experience delivering scalable cloud systems. A detail that sets him apart is the unusual depth of customer-facing troubleshooting paired with advanced serverless design, giving him both product empathy and technical rigor.
9 years of coding experience
8 years of employment as a software developer
Computer Software Engineering, Computer Software Engineering at Dublin City University
Github Skills (28)
authentication9
aws-appsync9
lambda-functions9
aws-amplify9
cli8
api8
aws8
storage8
aws-lambda8
aws-s38
aws-fargate8
analytics7
aws-apigateway7
amazon-cognito7
react7
Programming languages (4)
Github contributions (5)
CiaranCallaghan94/Cognito-S3-App-Demo
Nov 2018 - May 2019
Contributions:19 commits, 12 pushes, 1 branch in 5 months
CiaranCallaghan94/hackerrank
Feb 2019 - Jan 2020
Contributions:25 pushes, 1 branch in 10 months
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