Thomas Schizas

Senior Site Reliability Engineer at DNSFilter
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Contact Information
us****@****om
(386) 825-5501
Location
UK
Languages
  • English Full professional proficiency
  • Greek Native or bilingual proficiency
  • French Elementary proficiency

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Credentials

  • ITIL Foundation Certificate in IT Service Management
    BCS, The Chartered Institute for IT
    Oct, 2013
    - Nov, 2024
  • Certified ScrumMaster (CSM)
    Scrum Alliance
    Dec, 2020
    - Nov, 2024
  • AWS Certified Developer - Associate
    Amazon Web Services
    Jan, 2018
    - Nov, 2024
  • Google Cloud Certified Professional Cloud Architect
    Google
    Jan, 2019
    - Nov, 2024
  • AWS Certified Solutions Architect - Associate
    Amazon Web Services
    Aug, 2017
    - Nov, 2024

Experience

    • United States
    • Software Development
    • 100 - 200 Employee
    • Senior Site Reliability Engineer
      • Jan 2023 - Present

    • United Kingdom
    • IT Services and IT Consulting
    • 1 - 100 Employee
    • Lead SRE
      • May 2021 - Jan 2023

    • United Kingdom
    • IT Services and IT Consulting
    • 300 - 400 Employee
    • Principal Consultant
      • Jan 2021 - May 2021

    • Lead Consultant
      • Jul 2019 - Jan 2021

      - Apply best practises for Security, Automation and Reliability of the platform- AWS Engineering- EKS/ECS – Orchestration- CI/CD pipelines – (Jenkins, AWS CodeDeploy, AWS CodePipeline)- Helm chart development- Python Lambda functions- IaaC – (Terraform, CloudFormation)- Configuration management – (Ansible, Packer)

    • United Kingdom
    • IT Services and IT Consulting
    • 400 - 500 Employee
    • Cloud Systems Developer Lead
      • Oct 2018 - Jul 2019

      - Managing a team of engineers and ensuring the timely delivery of tasks- Establishing CI/CD pipelines using Jenkins and CodePipeline with integrated automation testing- Automating resource deployment using Cloudformation and Terraform- Establishing LZs on AWS using a variety of tools- Automating server configuration using Chef- Using TDD for IaC- Developed estate wide functionality using AWS Serverless services- Mentored junior members of the team

    • Cloud Systems Developer
      • Oct 2017 - Sep 2018

      - Tech lead on a major project- Application and infrastructure migration to AWS- Established current CI/CD using Jenkins- Provided server configuration using Chef- Developed estate wide Lambda functionality- Used test driven development to provide IAC

    • United Kingdom
    • Software Development
    • 200 - 300 Employee
    • Team Lead - TCMS Traders
      • Apr 2017 - Sep 2017

      • Managing a team of Technical Client Managers and Support Analysts and ensuring their personal objectives complement the company’s strategic and transformational goals.• Technical delivery lead on a large scale, industry defining project for two years. Stakeholder presentations to Executive Board level members and customer CTO’s on a weekly basis.• Project oversight across the team with reference to current projects working on.• Driving team member development and career progression, identifying skills and interests and aligning them with business objectives.• Contributing to operational consistency and risk management by creating and maintaining processes adhering to the ITIL Framework.• Being the voice of the client and driving client feedback through the appropriate channels to ensure the resulting product adds value to client operations.• Improving cross-functional communication and developing supporting processes to ensure optimal working practices.• Exposure to Agile software development, contributing to release acceptance criteria, problem management and feature requests.• Problem management reporting to CEO, COO and Department Heads.• Iteratively improving the client engagement process to ensure risks and opportunities are communicated between internal stakeholders; re-establishing client ownership and driving forward with the concept of Technical Account Management.

    • Managed Services Consultant
      • Jan 2015 - Apr 2017

      Responsibilities:-> Testing new products, existing products , upgrades and deployments, to ensure that they perform to an acceptable standard when delivered using virtualisation and shared systems.-> Contributing actively to projects and wider company initiatives.-> Collaboratively pursuing issue resolution and push for long term and permanent solutions to ongoing problems.-> Contributing to the development of products with a view to creating products optimized on virtualized environments.-> Building a detailed technical and functional understanding of software within the Managed Services environment, with particular focus on the impact of virtualisation.-> Automating deployment of software, retrieve metrics and perform analysis.-> Providing capacity analysis and reports.-> Developing and facilitate workshops and training for personnel.-> Assisting the Legal team by contributing with technical, service and infrastructure knowledge, on drafting new and existing contracts.-> Working closely with the infrastructure team in maintaining and expanding the Managed Services environment, planning and taking part in regular DR testing.-> Co-operating with Sales and Client Management with Pre-Sales calls and meetings.

    • Technical Consultant
      • Jul 2013 - Dec 2014

      Responsibilities: -> Be a single point of contact and own the technical relationship for assigned clients-> Provide third line technical support to clients, who are high profile financial institutional traders, interdealer brokers and exchanges-> Plan, configure, install and roll-out advanced internet-based exchanges that run on Microsoft Windows platforms. -> Manage deployment projects-> Undertake technical pre-sales work, assisting Sales Managers in translating complex requirements into workable solutions-> Provide high-level technical consultancy to clients, such as product configuration and training-> Improving existing processes and providing automation solutions to ensure speedy and less error prone processes and deployments-> Train junior members of the team

    • Greece
    • Construction
    • 700 & Above Employee
    • Jr. Admin
      • Jan 2012 - Jul 2013

      Database MaintenanceIn-House application Designing, Development, Testing, Deployment and SupportSupport of existing applications

    • Admin Assistant
      • Jan 2011 - Dec 2011

      Database MaintenanceSupport of existing applications

    • Technical Support
      • Mar 2010 - Nov 2010

      Maintain Database, Server and Network Handle application development and implementation Provide Technical Support Maintain Database, Server and Network Handle application development and implementation Provide Technical Support

    • Trainee, Technical Support
      • Feb 2008 - Jul 2008

      Provided the company's e-mail support Provided Technical Support Assisted in application development Provided the company's e-mail support Provided Technical Support Assisted in application development

    • Operator
      • Jun 2003 - Aug 2003

      Telephone Ticket Booking Provided customer service support Coordinated Ticket booking Telephone Ticket Booking Provided customer service support Coordinated Ticket booking

Education

  • Heriot-Watt University
    Master of Science, Web Intelligence
    2008 - 2009
  • DEREE - The American College of Greece
    Bachelor of Science, Business Administration; Computer Information Systems
    2003 - 2008
  • Geitonas School
    Highschool
    2000 - 2003

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