Spyridon Kalogeropoulos

SRE | DevOps | Developer | Human

About Me

Hello! I'm Spiros, a passionate SRE and DevOps engineer with a strong background in software development and ML. I like to build solutions that people understand and find useful. I have a knack for simplifying complex problems and creating efficient, scalable systems. My journey in tech has been driven by a desire to break things in order to understand how they work.

I believe in the power of simplicity and minimalism in design, focusing on what truly matters to create solutions that users understand.

Experience

Senior Site Reliability Engineer

August 2024 - Present

● Spearheaded the implementation of advanced monitoring and alerting systems, increasing system reliability and reducing downtime by 35%. ● Optimised Kubernetes (EKS) cluster management, leading to a 25% cost reduction across cloud infrastructure. ● Improved infrastructure scalability through automated T erraform scripts, achieving faster response times for resource scaling by 40%. ● Collaborated with cross-functional teams to refine CI/CD pipelines, resulting in 20% faster deployment cycles. ● Introduced incident response and root cause analysis workflows, cutting resolution times by 30%. ● Mentored junior engineers on cloud infrastructure best practices and reliability engineering.

DevOps Engineer

December 2021 - August 2024

● Automated infrastructure provisioning using Terraform, reducing deployment time by 50%. ● Implemented Ansible playbooks for configuration management, decreasing manual configuration time by 25%. ● Managed an EC2 fleet and 20+ EKS clusters, improving performance by 30%. ● Developed Docker containers for application deployment, enhancing portability and consistency across environments. ● Led the development of a full-stack application to automate the creation of EKS clusters through a UI portal.

Education

MSc in Big Data Technologies

Glasgow Caledonian, 2020/21, Distinction

During my degree, I worked with various big data technologies including GCP services for data storage and analysis, as well as Python libraries like Pandas and Numpy. My dissertation focused on using machine learning to predict how a system would perform based on its setup. I used Python for data analysis and model building, then developed a REST API using NodeJS and Express, along with a React + Redux web app to present the results. The project was a valuable hands-on experience in full-stack development, machine learning, and working with large-scale data tools.

BSc in Computer Science

Glasgow Caledonian, 2016/20, 1st Class Degree

I studied topics like software engineering, web development, and database design. I built several projects, including a web app using JavaScript and MySQL, which gave me hands-on experience in software development. I also worked on a mobile app using React, NodeJS, Kotlin, and Java, which helped me gain full-stack and some mobile development experience.

Projects

Simons VRS

A dynamic website for an indipendent company that provides solutions for pools and ventilation around the Greater London Area. The site is built using React with Vite and is hosted on Netlify. It uses styled components for styling and is designed to be responsive and user-friendly. The project showcases my ability to create modern, efficient web applications that meet client needs.

Technologies:

Javascript, React, Vite, Google SEO, Netlify

View Project

Insight Futures

Worked with Doug and his team to create a fullstack environment with real users and real time data analysis. The project helped clients assess their company performance and make informed decisions. I was responsible for the backend development, data analysis, and integration with third-party APIs.

Technologies:

Javascript, Python, React, Redux, NodeJS, Express, MongoDB, Azure, PowerBI, Numpy, Pandas

Datapal (formerly Datayogi)

A back to front solution that provides customers a viable and modern way to manage their data. Customers can upload their data and chose who they want to share it with. The data is stored in a secure and encrypted way, and offers a variety of ways to share it.

Technologies:

Javascript, React, Redux, NodeJS, Express, MongoDB, Azure

Skills

Terraform Ansible Kubernetes Docker Git Linux Monitoring & Logging Networking Scripting CI/CD AWS JavaScript React & Redux Python (ML & Data) SQL & NoSQL

Contact

Email: ka.spiros97@gmail.com

Location: London, UK

LinkedIn: linkedin.com/in/s-kalog/

GitHub: github.com/KaSpiros