Skip to content
dev.cormac.cc
Photo of Cormac Callan

Cormac Callan

Solutions Engineer

Ireland

Solutions Engineer specialising in DevOps and DevSecOps, with 6 years at AWS and Google Wiz. Experienced in building tooling, handling critical escalations, delivering live showcases and training engineers.

Featured post · 11 Jan 2026I designed it to fail, then I demoed it to 150 AWS partnersI designed a reusable CDK demo simulating issues (SSL misconfigurations, timeouts, deployments, version drift) and presented it to 150+ partner managers, solutions architects and engineers.

Experience

  1. Technical Solutions Engineer · Google Wiz

    Dec 2025 – Present

    Remote, Ireland · 11 mos

    • Worked with a Technical Account Manager to document a customer’s internal support processes as organisation notes, now used by every Wiz engineer who handles that customer’s tickets.
    • Independently documented Wiz API behaviour by analysing Grafana logs, despite no prior Grafana experience; shared findings with my team to improve knowledge and troubleshooting.
    • First responder for AI ticket deflection in EMEA, giving feedback to the team developing the program.
    • Top of the EMEA team for ticket volume and related metrics.
    • Wiz
    • DevSecOps
    • Wiz API
    • Grafana
    • AI Tooling

  2. Cloud Support Engineer II · Amazon Web Services

    Jun 2020 – Nov 2025

    Remote, Ireland · 5 yrs 6 mos

    Engineering & Demos

    • Built a reusable AWS CDK demo environment that simulates real-world deployment failures (SSL misconfigurations, timeouts, version drift), and delivered a live support tooling showcase to 150+ partner engineers, managers and solutions architects.
    • Built a containerised Node.js application for App Runner and wrote an internal article for colleagues; selected to publish it as a public sample on GitHub and nominated as an open-source champion.
    • Built a serverless Slack bot (Python, Lambda) to automate the distribution of quality tips.
    • Built a Python tool (“Jarvis”) to manage and clean up my AWS environments.

    Support & Incident Management

    • Escalated a critical service issue affecting 295,000+ accounts to AWS development teams.
    • Internal escalation on-call for Elastic Beanstalk, CDK, CloudFormation and App Runner.
    • Awarded Elastic Beanstalk SME, resolving complex deployment and operational issues across Node.js and Python environments.
    • Managed business-critical, multi-stakeholder enterprise cases across chat, email and live calls, including de-escalating unhappy customers.

    Leadership & Quality

    • Rewrote the global Best Practices wiki used by engineers worldwide.
    • Designed the Engineer Due Diligence training model for onboarding.
    • Organised and delivered bi-weekly quality talks, contributing content and mentoring emerging quality leaders.
    • Led weekly quality reviews, analysing team performance metrics to drive continuous improvement.
    • Interviewed candidates for Cloud Support Engineer roles.
    • AWS CDK
    • TypeScript
    • Python
    • Node.js
    • Docker
    • CloudFormation
    • Elastic Beanstalk

Education

  1. BSc (Hons) in Computing

    Sept 2016 – May 2020

    Dundalk Institute of Technology · Ireland

  2. FETAC Level 5 - Engineering

    Sept 2013 – May 2014

    Ó Fiaich Institute of Further Education · Ireland

Certificates

Projects

About me

A little about me

  • Football

    I play many sports, but my favourite is Gaelic Football. I've played this all over the world, most notably in China.

  • DIY

    I'm an avid DIY'er, currently renovating a 19th century farmhouse.

  • Analogue Addict

    I love collecting and listening to records, playing my acoustic guitar and most recently, paying a lot of money to get photos developed. Maybe it's time to set up my own darkroom.

  • Tech

    When I'm not working, I usually have my head stuck in designer software (Affinity) or Ableton Live. I own several analogue synths, now I just need to figure out what all those knobs and buttons do.