Dimitris Demiris Email & Phone Number

Royal Leamington Spa, Gb

United Kingdom

Warwick, England, United Kingdom

Core Responsibilities: • Plan the strategic expansion of the business.• Reduce the technical debt by scaling the technical team with offshore, contractors and in-house hirings and applying best practices.• Managing the product team and the delivery of products alongside the tech teams. Ownership of the Roadmap and budgeting.• Managing and evaluating technology resources.• Board member and Steering Group member of the business.Key Achievements: • Improved internal processes, including project management and quality assurance.• Prepare and successfully get ISO27001 and act as an ISMS officer and CIO.• Introduce KPIs and SMART objectives for the teams.• Improve the uptime of the platform to 99.5%.• Created a QA team (manual and automation).• Design a data lake system.• Implemented a complete CI/CD process.Tech Stack: Azure, .NET, Docker, Jenkins, Geoserver, Linux, MongoDB, MSSQL, PostgreSQL, Redis, Python, Bitbucket, React, SpecFlow, Container Apps, Kubernetes, O365, Databricks, Kibana, Prometheus, Kafka, ElasticSearch, Jira.

Volos, Greece

Core Responsibilities: • Conceptualised and led the entire web ERP development project that handles invoicing, financial data, inventory management, and CRM functions.• Managed a team of five on-site developers and later transitioned to employing and leading an outsourced company.• Maintained the database in MySQL and proposed new schemas for database normalisation standards.• Identify growth areas, such as expanding the functionality to include scheduling services through Andromeda, an android application.• Consistently collecting customer feedback to understand needs and develop solutions to make the system more functional and user friendly.Key Achievements: • Built a company from the ground up that offers a unique service in high demand among Greek businesses.• Gained exposure to business development, growth and financing.• Effectively designed a scalable system through Amazon EC2 and RDS, writing all the reporting tools to run in the background to increase data processing capacity on the webserver.Tech Stack: AWS, PHP, Linux, MySQL, Bitbucket, Jira, Selenium, JQuery, Android Development

London, England, United Kingdom

Core Responsibilities: • Build roadmaps to guide strategic direction, proposing new technologies and processes as acting CTO and most senior manager.• Managed the Development Team, consisting of 15 people, ensuring one-on-one meetings, mentoring, team assessments, training, and performance monitoring.• Conduct monthly and quarterly reviews, reporting progress and influencing decisions at board meetings.• Execute the whole spectrum of recruitment activities for internal and outsourced tech hires.• Review code quality and release & build processes, leading QA teams to adhere to high standards, automate testing, and increase product stability.• Strengthen infrastructure security and the performance of the website and apps.• Key Achievements: • Improved internal processes, including project management and quality assurance.• Developed the CI/CD process using the Jenkins cluster on AWS, reducing delivery times by 30%.• Implemented the AWS Well-Architected framework on the business, streamlining internal systems.• Championed the implementation of SDLC, providing training on the correct use and benefits.Tech Stack: AWS, PHP, ElasticSearch, Jenkins, Angular, Docker, Terraform, Linux, MySQL, PostgreSQL, Redis, Bitbucket, Jira, Selenium, Ansible.

London, United Kingdom

Core Responsibilities: • Build roadmaps to guide strategic direction, proposing new technologies and processes as acting CTO and most senior manager.• Managed the Development Team, consisting of 15 people, ensuring one-on-one meetings, mentoring, team assessments, training, and performance monitoring.• Conduct monthly and quarterly reviews, reporting progress and influencing decisions at board meetings.• Execute the whole spectrum of recruitment activities for internal and outsourced tech hires.• Review code quality and release & build processes, leading QA teams to adhere to high standards, automate testing, and increase product stability.• Strengthen infrastructure security and the performance of the website and apps.• Key Achievements: • Improved internal processes, including project management and quality assurance.• Developed the CI/CD process using the Jenkins cluster on AWS, reducing delivery times by 30%.• Implemented the AWS Well-Architected framework on the business, streamlining internal systems.• Championed the implementation of SDLC, providing training on the correct use and benefits.Tech Stack: AWS, PHP, ElasticSearch, Jenkins, Angular, Docker, Terraform, Linux, MySQL, PostgreSQL, Redis, Bitbucket, Jira, Selenium, Ansible.

Reading, United Kingdom

Core Responsibilities: • Proposed new technologies to enable business, lead internal teams and streamline processes as proxy CTO.• Hired, coached, and mentored on-site and outsourced developers, ensuring TDD and BDD methodologies (Behat, Gherkin, Selenium).• Prospected for new areas of development to grow the business and mobilised strategy and resources to harvest opportunities.• Managing developers (both UK based and non-UK, QA teams and Ops Team.• Liaised with internal and external stakeholders to plan and execute projects, managing teams to ensure success.• Communicated project progress and provided advice in C-Suite level meetings.• Designed and Implemented AWS infrastructure and a disaster recovery plan, maintaining the system with Kubernetes and terraform.Key Achievements: • Established policies to strengthen the technology implementation and improvement process, involving automated CI/CD, reducing delivery time by 40%.• Implemented agile methodologies and Atlassian products, introduced automated testing, automated test suites, and created a pipeline for database migrations, reducing deployment time by 20%.• Drive the business to acquire the ISO27001• Reduced operating costs by 50% by migrating on-premises applications to the cloud.Tech Stack: AWS, PHP, ElasticSearch, Jenkins, Docker, Terraform, Linux, MySQL, Redis, Bitbucket, Jira, Selenium, Kubernetes, Kibana, Grafana, Windows Servers, Snowflake.

Swindon, United Kingdom

Core Responsibilities: • Ensure development and maintenance of the company websites and applications, using PHP to write code.• Supervised developer teams and provided training as needed.• Liaised with Business Analysts to increase an understanding of requirements, which were mirrored in strategic planning.• Maintained AWS system through multi-region support and Cloud Formation template designing.• Integrated AWS SDK with Symfony for use with SQS/SES/S3.Key Achievements: • Utilised the CI/CD methodology to improve the build process, closely mentoring new developers and conducting code reviews.Tech Stack: AWS, PHP, ElasticSearch, Linux, MySQL, Bitbucket, Jira, Selenium, Angular.

Volos, Greece

Core Responsibilities: • Oversaw day-to-day operations, using observations, data, and feedback to contribute to strategic planning.• Managed staff to ensure understanding of tasks and provided tools and resources to support teams.• Conducted software development on custom PHP applications.• Engaged in Cloud Computing using Amazon AWS, developing sophisticated systems.Key Achievements: • Utilised virtualisation technologies (Esxi, Proxmox) and optimised Web Design UI, reducing operating costs by 20%.• Drove the business to ISO standards while applying network security.• Established a software department, resulting in a 10% increase in revenue.Tech Stack: AWS, PHP, Linux, MySQL, jQuery, Windows Servers, Virtualisation, Designing Datacentres, Esxi, Proxmox, Citrix, Android Development, C++, .NET, Java, WordPress, E-shop apps.

Core Responsibilities: • Ensure development and maintenance of the company applications (SaaS), using PHP.• Supervised developer teams and provided training as needed.• Liaised with Business Analysts to increase an understanding of requirements, which were mirrored in strategic planning.

Core Responsibilities: • Taught languages, databases, MS Office, OS’s, Multimedia technologies, accounting software’s, LAN, and WAN courses• Developed course and examination materials, updating materials to maintain consistency with industry practices.• Actively responded to student queries and encouraged innovation.Key Achievements: • Teaching students led to constant review of information, enabling a deep understanding of theoretical and practical knowledge.

Core Responsibilities: - Technical Department administration and writing PHP Applications

Volos, Greece

Core Responsibilities: - Supporting Security Systems C4i in Volos Area of Olympic facilities

Greece

Served in The Hellenic Army. After completing a 6-week boot camp, I was then sent to receive training in a combat profession for two months alongside the communications dept., and finished my 17-month service.• Military Service – Army Guns & Ammo Stock Management• Military Occupational Speciality (MOS) – Clerk / Computer Operator / Communication Operator

Βόλος, Ελλάδα

Core Responsibilities: - Writing mobile invoicing software and extending it. (Car based solution)

Diploma Of Education, Computer Programming, Specific Applications

Course, Internet Commerce

Course, Information Technology