Sebastian Harris-Hayne
@sebastianharris-hayn
I am an experienced infrastructure engineer returning to hands-on technical operations.
What I'm looking for
I have 15+ years of experience spanning senior IT leadership and operational management, including Director of Technical Operations and CTO-level roles during the early 2000s tech boom. After a decade away from full-time IT, I’m deliberately stepping back into hands-on technical work at a lower level and genuinely looking forward to it.
I keep my skills sharp through home-lab tinkering, freelance consulting, and practical use of modern tools such as Ansible, Docker, Proxmox, and container orchestration. I’m fluent in scripting and systems languages including Python, Bash, Perl and TCL, and have working exposure to C++, .NET, and C#.
I’ve led cross-functional teams as a Professional Services Manager and CTO, delivering complex infrastructure rollouts across HPC, NAS, and clustered storage, and I translate between technical and non-technical stakeholders with calm under pressure. I apply Agile, Lean and continuous improvement methods to improve delivery and operational reliability.
My memorable work includes customer deployments and clustered storage builds at Xinit Systems, Senior Unix Engineer duties in a Tier 4 NOC for REDNET (UK Business ISP), and recent freelance infrastructure modernisation projects using custom Ansible playbooks, Proxmox VM orchestration, and Docker/Kubernetes where appropriate. From enterprise NAS appliances to core ISP infrastructure, I’ve focused on maintainable, resilient solutions.
I’m not chasing titles; I want to join an inclusive, supportive, collaborative team where I can contribute meaningfully, mentor when helpful, and re-engage with the hands-on infrastructure work I enjoy. I bring pragmatic problem solving, operational maturity, and a readiness to re-learn and adapt as needed.
Experience
Work history, roles, and key accomplishments
Production Supervisor
Manufacturing Company
Sep 2018 - Present (6 years 11 months)
Managed daily operations across multiple production departments, ensuring smooth workflow and on-time order fulfilment. Led initiatives to streamline production workflows using Lean and Kaizen principles, increasing efficiency and reducing waste.
Senior Unix Engineer
REDNET (UK Business ISP)
Managed business-critical infrastructure for high-profile clients as a Senior Unix Engineer in a Tier 4 NOC team. Supported bespoke high-availability Unix systems, fault-tolerant networking, and core internet services within secure data environments.
Infrastructure Modernisation
Freelance
Ongoing project-based work focused on improving infrastructure resilience and automating deployments. Projects include custom Ansible playbooks for bare-metal environments, Proxmox-based VM orchestration, and Docker/Kubernetes implementations.
Professional Services Manager
Xinit Systems
As Professional Services Manager, led customer deployments and infrastructure builds for clustered storage and dense compute systems. Contributed to the development and delivery of OpenFiler (OS) and the proprietary "SharqStor" hardware platform.
Education
Degrees, certifications, and relevant coursework
Open University
BSc(Hons), Business
Completed a Bachelor of Science with Honours in Business through the Open University. This program provided a comprehensive understanding of business principles and practices.
Various Institutions
NVQ Level 3, Team Leadership, Manufacturing Operations, Customer Services, Warehousing and Distribution
Achieved NVQ Level 3 in Team Leadership, focusing on developing effective leadership skills and team management strategies. Also obtained NVQ Level 2 in Performing Manufacturing Operations, Customer Services, and Warehousing and Distribution, demonstrating practical competencies in these areas.
Availability
Location
Authorized to work in
Job categories
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