Available for work

Zisis Kostakakis

Software Engineer & Cloud Architect

Software Engineer & Cloud Architect specialising in Python and AWS — I architect scalable cloud solutions, automate infrastructure with Terraform, lead teams to MVP delivery, and integrate private AI/LLM systems.

engineer.ts

const engineer = {
 name: "Zisis Kostakakis",
 role: "Software Engineer & Cloud Architect",
 location: "United Kingdom",
 skills: [
 "Python", "AWS", "Terraform",
 "TypeScript", "Docker",
 ],
 available: true,
};

About Me

I'm a Software Engineer & Cloud Architect with extensive expertise in backend development, infrastructure automation, and technical leadership. I architect scalable AWS solutions using Terraform and Python, and have a proven track record of reducing engineering overhead by 100% through strategic automation.

Skilled in DevSecOps practices including system hardening, penetration testing, and private AI/LLM integration. I bridge the gap between development and operations with advanced knowledge of virtualisation (Proxmox), disaster recovery, and self-healing infrastructure.

Based in

Open to work

Status

Cloud Native

Architecting scalable AWS solutions with Lambda, EC2, Terraform, and CloudFormation

DevSecOps

System hardening, penetration testing, CI/CD pipelines, and private LLM/AI integration

Automation

Self-healing infrastructure, monitoring tools, and engineering overhead elimination

Technical Leadership

Leading cross-functional teams to MVP, conducting interviews, and translating business needs into architecture

Work Experience

Permanent

Apr 2026 – Present

Zerion Software

Full Stack Engineer

Belfast, Northern Ireland

Aug 2022 – Apr 2026

StormHarvester Limited

Software Development Engineer R&D

Belfast, Northern Ireland

•Architected automated cloud monitoring using AWS CloudFormation, reducing incident response times by 30%
•Developed "Crontab Health Check" monitoring tool — 100% reduction in missed failures
•Engineered self-service automation tools, removing engineering support dependency (100% time savings)
•Spearheaded decomposition of monolithic codebases into modular components for EC2 distribution
•Enhanced CI/CD with Jenkins pipelines integrated with AWS services
•Deployed private LLM knowledge base (Llama3 8B) via Docker and OpenWebUI with RBAC
•Managed end-to-end Linux server provisioning and maintenance

PythonAWS CloudFormationEC2JenkinsDockerBashLinuxLLM

Contract

2025 – Present

Paiwe

Software Engineer & Cloud Architect

United Kingdom

•Directing project to MVP, leading cross-functional team and collaborating with CEO to translate business needs into scalable infrastructure
•Conducting interviews for full-stack and senior software engineer roles
•Developed scraping software to collect and catalogue watches and attributes
•Architected cloud solutions with data pipelines and ingestion using Terraform and GitHub Actions
•Built internal database tool for watch management
•Created automated scripts for EC2 provisioning using Terraform and Bash

PythonTerraformAWS LambdaAPI GatewayDynamoDBECRIAMCognitoEC2BashDocker

2025 (6 Months)

Farmdrive.io

Software Engineer

Remote

•Engineered custom OCR solution to automate digitisation of market cattle documentation
•Executed penetration testing across cloud platform for security hardening
•Provided strategic consulting on software infrastructure architecture

PythonOCRAWSPenetration Testing