Engineer · Entrepreneur · Inventor

Apostolos
Chatzisavvas

Engineering leadership and entrepreneurial vision at the intersection of nuclear, energy, and business innovation. Building companies and the low-carbon future.

CEng CMgr IntPE PhD 5 Patents Entrepreneur
Apostolos Chatzisavvas
10+
Years in Nuclear
3
Businesses Founded
5
Patents Granted
7
Publications
33
Certifications
5
Degrees
17
Major Projects

About

The short version.

I work at the intersection of nuclear engineering, energy systems, and business. My career blends deep technical expertise with entrepreneurial drive — building companies, filing patents, and delivering in some of the most demanding regulated environments in the world.

As a Design Engineer at a UK nuclear licensed site, I support frontline engineering and technical assurance for operational facilities, from nuclear materials management to remediation of ageing assets. In parallel, I run businesses in the UK and Greece — Instacar Ltd in the UK used-car market and G.I. Security S.A. in the Greek security products sector.

I hold five patents, have published in peer-reviewed journals, and represented Greece at the World Robot Olympiad on three continents. My academic credentials span four degrees including a PhD, and my research focuses on hydrogen technologies and nuclear energy as enablers of the low-carbon transition.

Whether engineering a nuclear facility, growing a business, or filing a patent — I believe innovation must serve both people and planet.

  • CEng
    Chartered Engineer — IET
  • CMgr
    Chartered Manager — CMI
  • IntPE
    International Professional Engineer
  • TEE
    Technical Chamber of Greece
  • APM PFQ
    Project Fundamentals Qualification
  • AutoCAD
    Certified Professional 2023
  • Energy
    Building Energy Inspector
  • Languages
    Greek, English, French, Spanish

Career

Experience.

2022 – Present
Design Engineer
UK Nuclear Licensed Site — Plant Facing Design Office

Frontline engineering support and technical assurance for operational nuclear facilities. Contributing to BEPPS encapsulation and storage programmes, HALES high-level liquor management, and remediation of ageing assets. Design assurance, configuration management, and readiness reviews under the Plant Delivery and Design Framework.

NuclearDesign AssuranceConfiguration ManagementBEPPSHALES
2018 – 2022
Nuclear Plant System Engineer
UK Nuclear Licensed Site

Technical performance, reliability, and compliance of multiple engineered systems: CCTV, fire detection, public address and evacuation, access control, electrical distribution, UPS and standby power, environmental monitoring, earthing, and lightning protection.

System EngineeringCE&ISafety ComplianceTBOM
2017 – 2018
Electrical Power Distribution & Utilities System Engineer
UK Nuclear Licensed Site

HV and LV network assurance, testing, and commissioning. Insulation resistance, AC/DC pressure and VLF testing, primary and secondary current injection. Switchgear functional testing and design support using Amtech, DIALux, and AutoCAD.

HV/LV NetworksCommissioningProtection Engineering
2016 – 2017
CE&I Nuclear Plant System Engineer
UK Nuclear Licensed Site

Plant control and instrumentation systems in a regulated nuclear environment. Walkdowns, red-line drawings, plant modification proposals, asset condition assessments, and DCS tune changes. Two innovation-centre projects delivered targeted cost and headcount savings.

C&I SystemsDCSInnovationCost Savings
2015 – 2016
Community Ambassador
CRM Students — Exeter

Safety coordination, fire management plan implementation, and community engagement at a large student residence. Stakeholder coordination and structured communication within a regulated operational setting.

Safety ManagementStakeholder Coordination
2014
Electrical & Computer Engineer
PPC S.A. / HEDNO — Greece

MV and LV distribution network design, MV/LV substation configuration, fault recovery, metering installation, SAP asset management, and renewable energy grid integration across the national electricity network.

Power DistributionRES IntegrationSAP
2011 – 2014
Electrical & Computer Engineer
PROECO Ltd — Athens (part-time)

Switch cabinet design for automation systems, GPRS telemetry for pumping stations, energy management studies, and lighting feasibility assessments for industrial and commercial applications.

AutomationTelemetryEnergy Management
2008
Electrical & Computer Engineer
PROECO Ltd — Ptolemaida

Traffic light system design and installation. Full engineering lifecycle from feasibility assessment to on-site commissioning, in collaboration with Eng. Tairidis Anastasios.

Public InfrastructureTraffic Systems
Intellectual Property

5 Patents granted.

All granted by the Industrial Property Organization of Greece.

EU 1006566Peer-reviewed
A Method of Comparative Series of Guiding Laser Beam with Reflectors and Humidity Sensors in Cases of Low Visibility due to Weather Conditions
Issued Oct 2009
GR 1008997
A Method of an Optical Laser Fence System in a Special Route in Case of Low Visibility
Issued Mar 2017
GR 1009535
System of Thermal Energy Production through Cavitation Phenomenon
Issued May 2019
EU 1006577Peer-reviewed
Comparative Method of Two-Way Visual and Audio Communication between an Engine Driver and an Unguarded Train Crossing via Paging and Digital Technology
Issued Oct 2009
GR 1010207
Excess Energy Management System of Autonomous Photovoltaic or Wind Installation
Issued Mar 2022
Research

Publications.

Excess Energy Management System of Autonomous Photovoltaic or Wind Installation
Industrial Property Organisation · Mar 2022
System of Thermal Energy Production through Cavitation Phenomenon
Industrial Property Organisation · May 2019
A Method of an Optical Laser Fence System in a Special Route in Case of Low Visibility
Industrial Property Organisation · Mar 2017
Design and Construction of Helmholtz Coil for Measuring Permanent Magnet Characteristics via LabVIEW System Design Software
Master of Science Thesis · AUTH · Jul 2014 · Grade: 10/10 (Excellent)
Comparative Method of Two-Way Visual and Audio Communication between an Engine Driver and an Unguarded Train Crossing
Industrial Property Organisation · Oct 2009 · Peer-reviewed
A Method of Comparative Series of Guiding Laser Beam with Reflectors and Humidity Sensors in Cases of Low Visibility
Industrial Property Organisation · Oct 2009 · Peer-reviewed
“Elevator with the use of electromagnets”
17th International Congress ELEVCON 2008, KLEEMANN · Published in German Lift Journal · Apr 2008 · 2nd place worldwide

Academic

Education.

MBA, Business Economics & Artificial Intelligence In progress
Chiang Mai University
2026 – 2027
MSc, Energy Investments and Environment
University of Western Macedonia
9.63/10 — First Class Honours, Excellent
2023 – 2025
PhD, Engineering
Aristotle University of Thessaloniki (AUTH)
2018 – 2024
MSc, Engineering Business Management
University of Exeter
Merit (68%) · 180 ECTS
2015 – 2016
MEng, Electrical & Computer Engineering
Aristotle University of Thessaloniki (AUTH)
2007 – 2014

Credentials

Certifications & Licenses.

MATLAB: Make & Manipulate Matrices
MathWorks
Mar 2026
MATLAB Certified
MathWorks
Feb 2026
Export Management & International Trade
Vellum S.A.
Dec 2025
Air Conditioning Systems Inspector
Hellenic Ministry of Environment & Energy
Aug 2025
Heating Systems Inspector
Hellenic Ministry of Environment & Energy
Aug 2025
IntPE — International Professional Engineer
Engineering Council UK
Feb 2025
Quantum Controls AVP MW Drive & Motors
Schneider Electric
Feb 2025
CEng — Chartered Engineer
Institution of Engineering and Technology (IET)
Mar 2024
CMgr — Chartered Manager
Chartered Management Institute (CMI)
2024
Building Energy Inspector
Hellenic Ministry of Environment & Energy
Oct 2023
Certified Safety Engineer
Greek Labour Inspection Authority
Oct 2023
Quantum Controls Digital Solution Construction for Asset Monitoring
Quantum Controls
Jun 2023
Project Management Foundations
LinkedIn
Mar 2023
How to Manage Lean Six Sigma Projects
LinkedIn
Mar 2023
CPR (Cardiopulmonary Resuscitation)
One Education
Jan 2023
AutoCAD 2023 Certified Professional
Autodesk
2023
Equality, Diversity and Inclusion
High Speed Training
Sep 2022
Cyber Security and Information Assurance
Cyber Security Competence & Certification Centre
Jun 2022
Professional Qualified Engineering License
Technical Chamber of Greece (TEE)
Nov 2021
Mini-MBA
International Business Management Institute (IBMI)
Oct 2021
Diploma in Project Management
IBMI
Oct 2021
Business Spanish — CEFR C2
Spanish Leadership
Mar 2021
Business French — CEFR C2
French Healthcare
Mar 2021
APM Project Fundamentals Qualification (PFQ)
Association for Project Management
Mar 2019
Middle Manager Member (MCMI)
Chartered Management Institute
Oct 2018
IOSH Working Safely
IOSH
Mar 2018
IOSH Managing Safely
IOSH
Jan 2018
MIET — Member of IET
Institution of Engineering and Technology
Oct 2016
Fire Marshall
St John Ambulance
Nov 2015
IELTS
IELTS Official
Apr 2015
ISACA CISA, CISSP, CCNA & CCNA Security Bundle
e-Careers
Aug 2014
BULATS C2/5 Proficiency
Cambridge English
Jan 2011
Certificate in Autodesk AutoCAD
Autodesk
Apr 2008

Recognition

Awards & Competitions.

2nd
Worldwide
ELEVCON 2008
17th International Elevator Convention, KLEEMANN · “Elevator with the use of electromagnets” · Published in German Lift Journal
Highly Recommended
Sellafield Business Awards
Innovation Centre Project
Legacy Pond Visibility Image Enhancement Solutions · Sellafield Ltd · Aug 2017

World Robot Olympiad — 8 Competitions across 4 Continents

2012
National
3rd Place — Greece
Robot: PTOLEMAIOS EXPLORER · Coach of team
2011
Worldwide
Abu Dhabi, UAE
International competition representing Greece
2011
National
4th Place — Greece
Robot: HOSPITAL GUIDE · Coach of team
2010
Worldwide
Manila, Philippines
International competition representing Greece
2010
National
2nd Place — Greece
Robot: LEGO TOUR
2009
Worldwide
Songdo, South Korea
International competition representing Greece
2009
National
3rd Place — Greece (OPEN category)
Robot: “So You Think Your Robot Can Dance”
2008
Worldwide
Yokohama, Japan
First international competition

Available for speaking engagements on:

Nuclear Engineering Energy Transition Hydrogen & Renewables Innovation & Robotics Engineering Leadership Entrepreneurship

Portfolio

Key Projects.

Feb 2019 – Present
COO — 30–40% YoY Growth & Strategic Expansion
G.I. SECURITY S.A.
Exclusive partnerships with Tiandy, OPTEX, CADDX, ZKTeco, Detnov, Venitem. Built one of Greece's most advanced B2B security platforms with VIP support model.
Jan – Nov 2025
Residential Property Renovation & Letting
Personal Venture
Full refurbishment and establishment of self-managed rental business for two properties. Gas Safety, EICR, EPC certified. Part P electrical compliance.
Jul 2024 – Nov 2025
Hydrogen & Nuclear Energy in the Energy Transition
University of Western Macedonia · MSc Dissertation
Techno-economic assessment of green, blue, and pink hydrogen production pathways. Nuclear-assisted electrolysis for large-scale decarbonisation.
Jan 2018 – Dec 2023
Greek Deals
Founder
Built Greece's largest deal-sharing community. Data-driven curation, moderation systems, collaborations with major e-commerce platforms and local brands.
Mar 2018 – Dec 2023
Mobile Valeting & Detailing
Founder · Sold 2024
Founded, scaled, and exited a mobile automotive-care business. Digital booking systems, fleet clients, standardised service procedures.
Oct 2018 – Nov 2019
Legacy Pond Visibility Image Enhancement Solutions
Nuclear / Regulated Site · Innovation Centre
Innovation Centre project developing unique facility to solve site engineering challenges. Advanced prototyping and modern design tools. SL Business Awards — Highly Recommended.
Jan – Aug 2018
Smart Electrical Metering Trial
Nuclear / Regulated Site
Trial deployment of smart electrical metering systems within a nuclear regulated environment.
Aug – Dec 2017
Versatile Collimation & Deployment System (VCADS)
Nuclear / Regulated Site · Innovation Centre
Multi-disciplinary team project. BS7671:2015 compliant design. 3D printing lead. Full project cycle from specification to commissioning.
Jan – Apr 2017
Drag Line Project FGMSP ST Bay 2
Nuclear / Regulated Site
Developed submerged conveyor system for waste clearance across Cave 2 ST Bay floor. Accelerated hazard reduction on priority programme.
Apr – Sep 2016
Tissue Engineering & Additive Manufacturing
University of Exeter · MSc Thesis
Digital cranial bone implant model via 3D printing. CAD modelling, FEA optimisation, biocompatible layer-based fabrication.
Apr 2013 – Jun 2015
Consumer Electronics Testing & Android OS Inspection
AUTH
Systematic testing of smartphones, tablets, and smart devices. Hardware testing, firmware stability, battery, GPS, wireless. QA methodologies.
Sep 2013 – Jul 2014
Helmholtz Coil for Permanent Magnet Characterisation
AUTH · MEng Thesis · Grade: 10/10
Precision Helmholtz coil system design, modelling, and experimental validation. LabVIEW data acquisition interface. Electromagnetic theory to prototype.
Feb – Dec 2013
Electrical & Mechanical Installation — Food Industry
AUTH
Complete design of industrial food-processing facility. Transformer substation, motor control, earthing, lightning protection, power factor correction.
Mar – May 2013
Computation Methods on Power Systems
AUTH
Power system behaviour under dynamic and fault conditions. Short-circuit events, transient stability analysis using ATP-EMTP and Neplan.
Feb – Jul 2012
Lightning Protection System — Industrial Complex
AUTH
Risk evaluation, economotechnical study of external and internal lightning protection for industrial buildings and photovoltaic panels.
Feb – Jun 2012
Autonomous Photovoltaic System — Design & Simulation
AUTH
Complete analysis and simulation of off-grid PV system using PowerSim. Energy flow, conversion efficiency, charge-discharge modelling.
Oct 2007 – Mar 2008
6.6 kW Pilot Photovoltaic Station
AUTH · Municipality of Ptolemaida
Design study and technical evaluation of pilot PV power station at 1st Professional Lyceum. Solar irradiance analysis, module orientation, inverter selection, cabling layouts.

Expertise

Skills & Expertise.

Electrical Engineering
99+ endorsements
MATLAB
90 endorsements
Engineering
88 endorsements
Power Systems
82 endorsements
Programming
59 endorsements
Simulations
58 endorsements
C++
54 endorsements
C
51 endorsements
Microsoft Office
51 endorsements
Project Management
39 endorsements
AutoCAD
39 endorsements
Electric Power
36 endorsements
Windows
27 endorsements
Embedded Systems
26 endorsements
Linux
25 endorsements
Power Electronics
22 endorsements
Java
21 endorsements
HTML
21 endorsements
Finite Element Analysis
16 endorsements

Languages

GR
Greek
Native
EN
English
Bilingual proficiency · IELTS · BULATS C2
FR
French
Professional · Business French CEFR C2
ES
Spanish
Professional · Business Spanish CEFR C2

Memberships

Institution of Engineering and Technology (IET)
MIET → CEng · Member since 2016
Chartered Management Institute (CMI)
MCMI → CMgr · Member since 2018
Technical Chamber of Greece (TEE)
Electrical & Computer Engineering · AM: 157182
Association for Project Management (APM)
PFQ qualified

By the Numbers

2,605+ LinkedIn Followers
500+ Connections
33 Professional Certifications
Spanning engineering, safety, management, languages & IT
8 WRO Competitions
Across 4 continents · 2008–2012

Contact

Let's talk.

Whether it's engineering, energy, innovation, or potential collaboration—I'm always open to a conversation.

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