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Have you got any questions? Write to me at kgapos@outlook.com

Hi, I'm Kostas Apostolopoulos

Head of NodeOps @ VeChain
Go to my resume!
Resume

About Me

I am a strategic engineering leader with over 20 years of experience in DevOps, blockchain, and web development. I wrote my first line of code in 1997 on an Amstrad 6128 computer, and I never stopped coding ever since. I graduated top of the 2003 class in my Computer Science BSc and earned my MSc in Adv. Software Engineering with distinction. I have a proven track record of cutting down on operational toil and solving complex problems with high quality software. Beyond coding, I enjoy elevating others in their professional journey through mentoring, presenting, and blogging.

Following my BSc in Computer Science, I worked for SiEBEN (now called Pobuca), an award-winning Microsoft partner in Greece, where I designed, implemented and deployed N-Tier web applications for large corporations like Phillip Morris and The Economist. Then, I moved to Dublin, where I earned my first-class honours MSc degree in Adv. Software Engineering from UCD. Following that, I worked as a Software Development Engineer in the development team of KeyedIn Konfigure, a rapid application development platform. In 2016 I joined Equifax (NYSE: EFX) as a Senior Software Development Engineer, developing web applications that ingest and process large volumes of data, to deliver useful, actionable business insights to its customers. Within Equifax, I transitioned into a DevOps role, building tools and services to support the full DevOps lifecycle of hundreds of projects. In 2019, I worked as a Technical Design Expert for Novartis (SWX: NOVN), where I implemented robust CI/CD pipelines for their globally distributed Salesforce applications and consulted several teams in DevOps best practices. I am currently working as the Head of NodeOps for VeChain, where I am responsible for the design, implementation and maintenance of highly available elastic node clusters, validators, boot nodes, snapshot systems, RPC proxies, and the entire observability stack.

My Specialities

Platform Engineering and SRE

10+ years of professional experience in IaC, CI/CD, and self service platform design with observability as a first class citizen.

Web Development

13+ years of professional web development for large multinational organizations

Cloud Computing

16+ years of professional working experience with AWS and Azure PaaS and IaaS services

Skills & abilities

DevOps, Platform Engineering, SRE
IaC, Terraform, Ansible, Docker
GitHub Actions, Azure DevOps, HCP, Jenkins
Prometheus, Grafana, Checkly, CloudWatch
AWS, Azure
Bash, PowerShell
C#, LINQ, Java, Python
ASP.NET (MVC, WebApi, Core, Entity Framework)
SQL Server, MongoDb, AWS S3, Azure Storage
NUnit, Selenium, k6
Javascript, Typescript, HTML5, CSS3, Bootstrap

Language skills

Greek
English
German

Education & jobs

October 2022 - today Head of NodeOps VeChain | Dublin, Ireland
March 2019 - September 2022 Lead DevOps Engineer Novartis | Dublin, Ireland
April 2017 - May 2018 Senior DevOps Engineer Equifax | Dublin, Ireland
October 2014 - April 2016 Software Engineer KeyedIn Solutions | Dublin, Ireland
September 2013 - September 2014 MSc in Computer Science University College Dublin | Dublin, Ireland
October 2010 - August 2013 Software Engineer SiEBEN | Athens, Greece
January 2008 - July 2009 Customer Service The Web | Larissa, Greece
September 2003 - August 2010 BSc in Computer Science Technological Educational Institute | Larissa, Greece
September 1990 - June 2003 Primary and Secondary Education Ellinogermaniki Agogi | Athens, Greece
Latest blog posts
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21 Nov, 2025
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First VeChain Builders workshop

The first VeChain Builders Workshop at the UCD School of Computer Science has concluded. It was a pleasure to return to UCD, meet the next generation of software engineers, and contribute something back...

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14 Nov, 2025
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AI Agents on the Blockchain

Super excited to be hosting a workshop at UCD School of Computer Science next Thursday, November 20th, 2025! 🚀 We’ll dive into AI Agents on the Blockchain, learning how to use the VeChain SDK to interact...

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