Engineering excellence across every critical asset.
50+
Years of engineering excellence
26+
Countries
of operation
~30%
Of annual profit invested in R&D
4
ISO certifications & Great Place to Work®
MAS is a technology-driven engineering company specialising in Power Management, Control, Protection, Monitoring and Automation Systems. For over 50 years we deliver advanced engineering solutions that secure the uninterrupted operation of critical assets across industries.
We design, develop and commission advanced solutions that ensure operational continuity in Power Generation, Oil & Gas, Heavy Industry and Maritime sectors.
Our expertise focuses on complex upgrade and retrofit projects, where reliability, availability, safety and performance are paramount. We prioritise operational continuity, system resilience and future-ready infrastructure.
With deep engineering know-how and a quality-driven approach, we distinguish ourselves through technical excellence and customer-focused delivery. For our customers, this translates into increased productivity, reduced operational costs and maximisation of existing asset value.
MAS operates within a strong engineering ecosystem, combining highly specialised in-house engineers, continuous training in new technologies and long-standing collaborations with leading OEM manufacturers.
Our continuous R&D investments, approximately 30% of annual profit, enable the development of innovative solutions, rigorously validated before deployment.
We maintain certified compliance with ISO 9001, ISO 14001, ISO 45001 and ISO 27001 standards and is recognised as a Great Place to Work®.
CEO Statement
"MAS S.A. operates with an uncompromising commitment to quality, integrity and reliability. Every project is executed with technical rigor, discipline and full accountability, supported by our certified governance framework and long-standing OEM partnerships.
This foundation defines our 50+ year presence in critical infrastructure and underpins the trust we have built with our customers, people and partners.
We are proud to contribute to European Research Initiatives that advance innovation towards environmental sustainability across the industries we serve."
Leonidas Zaimis
CEO, MAS S.A.
Our mission
Our vision
What We Stand For
MAS culture is rooted in engineering discipline and execution accountability. Every solution is developed with technical rigor, operational awareness and full lifecycle responsibility.
We operate as a unified team with a safety-first mindset and pragmatic problem-solving approach, capable of delivering in complex brownfield constraints and demanding greenfield projects.
Our philosophy prioritises long-term partnerships, built on respect, technical integrity, reliability and measurable performance, with our customers, employees and partners.
Our people are our core stakeholders. We value personal integrity, mutual respect, team spirit and a high-quality working environment.
Our engineers are highly qualified and continuously trained and certified through official OEM programs and advanced technologies. Their expertise covers control systems, protection, power management, automation and retrofit integration across all operational layers.
With strong field experience in both brownfield and greenfield environments, they execute complex projects with precision, operational continuity and long-term system resilience.
At the same time, our success is equally supported by the strong contribution of our operational, commercial, administrative and support teams, whose consistency, coordination and commitment ensure smooth execution across every level of the organization.
Since 1974, MAS has strategically expanded internationally
26+
countries served
Today the company is active in 26+ countries, delivering reliable engineering solutions across diverse industries.
In Milestones
Five decades of continuous growth, innovation and engineering leadership; from a maritime specialist to a global technology-driven partner for critical infrastructure.
MAS launches special digital platform for the marine sector.
Driven by its constant commitment to technological advancement, the company builds on its strong engineering legacy while continuing to respond to evolving market needs through the development and application of field-proven innovations within a robust engineering framework.
MAS is appointed Woodward Premium Partner, encompassing Technical Competence Centre for Turbines, Engines & Compressors, Authorized Systems Integrator (ASI), Central Distribution Facility (spanning four decades), Authorized Independent Service Facility (AISF) and Woodward Training Center. MAS gets further training and certifications by Siemens for software solutions on Electrical protection and high levels PLCs (DIGI SI5, SIPROTEC 5, TIA PRO1, TIA PRO2).
Engineering teams receive training and MAS is certified to apply Siemens SIMATIC PCS7, software on provided solutions for Electrical Protection and high level PLCs.
MAS develops an advanced Digital Energy Management Platform and launches Hybrid Solutions for BESS and pumping applications.
MAS becomes Woodward Business Partner for CIS countries, expanding its geographical footprint.
MAS executes complex brownfield projects under full turnkey scope (including supply of the assets) and expands Turbine Overhaul & Maintenance Services.
MAS develops Energy Management Systems (EMS) and Generator Management Systems (GMS) and becomes Woodward Inc.'s Central Commercial & Technical Facility for Eastern Europe.
MAS undertakes large Steam Turbine Control projects and becomes a Woodward Recognized Turbine Retrofitter (RTR).
Expansion into Hydro Turbine Controls, and execution of major hybrid hydro power generation projects in Greece.
MAS expands its portfolio of validated SCADA solutions. It delivers the largest to date multi location multi server system.
MAS establishes its SCADA Department. The company becomes Woodward certified distributor for Compressor and Gas Turbine Controls.
MAS expands to undertaking complete turn-key power plant upgrade projects.
After numerus engine and power management upgrade projects, MAS S.A. is recognized as an OEM Certified Engine Retrofitter.
MAS is appointed Woodward Central Distributor for Greece, Cyprus and Turkey.
The company is renamed MAS S.A., supporting its expansion to land base industries.
MAS becomes official representative of Kidde Graviner Oil Mist Detection Systems and enters land-based solutions for the Power Generation industry.
MAS becomes an Authorized Independent Service Facility (AISF) of Woodward Inc., launching a strategic partnership that continues for more than 40 years.
MAS Ltd is founded as Marine Automation Services Ltd, operating in the maritime sector as an engineering company specializing in engine room and bridge control system upgrades. Its highly specialized services drive rapid growth beyond Greece, soon supporting shipping customers worldwide.
An integrated framework covering the full scope from design to operation.
MAS operates under an integrated Quality, Environmental, Health & Safety and Information Security framework covering the full scope from design to operation.
These standards ensure structured project control, documentation traceability, workforce protection and secure handling of operational data.
Our solutions undergo multi-level validation including FAT, SAT and simulation of abnormal conditions. All deliverables are fully traceable, ensuring long-term maintainability. Field experience is continuously integrated into engineering methodologies, supported by ongoing R&D.
All site activities follow strict safety procedures, including risk assessments and permit-to-work systems. MAS personnel operate with certified Personal Protective Equipment (PPE), aligned with international standards and relevant API guidelines.
Safety is embedded in system architecture through fail-safe logic, redundancy and emergency response mechanisms.
Our solutions contribute to improved energy efficiency and sustainable operations. MAS actively participates in European R&D initiatives supporting sustainability.
Engineering is at our core, but our strength comes from our people. You will be part of a company shaping the future of power and energy management through advanced engineering solutions.
We welcome both experienced professionals and early-career specialists who are ready to contribute to technically demanding environments. For us, integrity, ownership and teamwork are as important as technical competence.
Your expertise is valued, your growth is supported.
We recognise talent, encourage initiative and support long-term professional development.
Collaborate with experienced engineers on high-impact projects.
You will collaborate with experienced engineers on high-impact projects across industries, strengthening your technical competence through hands-on involvement in complex engineering solutions.
Structured training, mentoring and knowledge transfer.
Structured training, mentoring and knowledge transfer ensure continuous professional development.
We offer career opportunities across:
Explore current opportunities and take the next step in your professional journey.
MAS' Internship Program offers recent graduates hands-on experience in a professional engineering environment under the guidance of experienced supervisors.
mechanical engineers / electrical engineers / marketing / graph designers
