THESS S.A.

What THESS S.A. does

THESS S.A. (Thessaloniki Software Solutions) is a privately held Greek software and research services firm founded in 2011 and headquartered in VEPE Technopolis, Pylaia-Thessaloniki. The company specializes in computational electromagnetics, developing specialized solvers, measurement tools, and mobile applications for electromagnetic field simulation, exposure assessment, and MRI safety analysis. Its core technology stack centers on the proprietary LCMETRICA toolbox and custom simulation pipelines for active medical implant modeling in MRI environments, brain stimulation modeling, and electromagnetic field sensor networks.

The company serves three primary verticals: biomedical research institutions (hospitals and medical research centers requiring MRI safety testing and electromagnetic exposure assessment), scientific research organizations (academic and lab-based electromagnetic field studies), and telecommunications companies (optical fiber network design, electromagnetic compatibility testing, and wireless power transfer analysis). Revenue appears to derive from a mix of professional services engagements and one-time software licenses, with no public pricing or subscription model disclosed. The team of 16 (with 5 core members publicly listed) is entirely composed of specialists from Aristotle University of Thessaloniki, including PhD-level expertise in computational physics and electrical engineering.

THESS operates a sales-led, project-based go-to-market model, leveraging academic networks and research collaborations (such as the dt-Epilepsy project and the Hermes Project) as primary channels for business development. The company holds partnerships with ESPA (Greek National Strategic Reference Framework) for EU/government R&D funding and Swiss CERT for cybersecurity or critical infrastructure collaboration. No institutional investors, parent companies, or external ownership structures are indicated, and John Markakis has served as President and CEO since founding. The company remains privately held with no disclosed funding rounds, revenue figures, or customer logos.

Name

THESS S.A.

Legal name

THESS S.A.

Website

https://thess.com.gr

Company type

Private

Founded year

2011

Operating status

Operating

Headcount range

11–50 employees

Short description

THESS S.A. is a Greek computational electromagnetics firm offering specialized solvers, MRI safety testing, and electromagnetic exposure assessment tools for biomedical research institutions, scientific organizations, and telecommunications companies.

Ownership category

akta.pro rank

Product category

Scientific Computing Software

NAICS

Other Scientific and Technical Consulting Services (541690), Scientific Research and Development Services (5417), Custom Computer Programming Services (541511)

SIC

Instruments For Meas & Testing Of Electricity & Elec Signals (3825), Services-Testing Laboratories (8734), Services-Computer Programming Services (7371)

akta.pro primary industry

Test & Measurement Equipment (Oscilloscopes, DAQ, signal analyzers, calibration benches) (IMAGAFAC)

Keywords

• Computational electromagnetics
• MRI safety testing
• Electromagnetic exposure assessment
• Scientific software development
• Biomedical simulation services

Headquarters

HQ city

Thessaloniki

HQ country

Greece

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Software

Revenue model

1. Computational Electromagnetics Services: Specialized consulting and software development services for electromagnetic field simulation, exposure assessment, and safety testing targeting research institutions and healthcare organizations
2. Custom Software Development: Mobile application development and specialized scientific software tools for biomedical and telecommunications research

Go-to-market motion1 record

Distribution channels1 record

Marketing channels2 records

Core offering

THESS S.A. (Thessaloniki Software Solutions) develops computational electromagnetics solvers, the LCMETRICA toolbox, and mobile applications for electromagnetic field measurement, MRI safety testing, exposure assessment, segmentation, and brain stimulation simulations. The firm delivers custom software and consulting services to biomedical, scientific research, and telecommunications clients.

Product overview

THESS S.A. is a software company specializing in computational electromagnetics and scientific research solutions. Their portfolio includes the LCMETRICA toolbox for measurement analysis, the dt-Epilepsy medical research project, and various computational electromagnetics services covering electromagnetic exposure assessment, MRI safety testing, and brain stimulation simulations. The company operates across biomedical, scientific, and telecommunications sectors, offering solvers, mobile applications, and specialized measurement services.

Differentiator

Problem solved

Functional benefit

Products and services

• LCMETRICA Toolbox

Segments3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

One partnership is on record.

• Swiss CERTminorStrategic or Co-development PartnerSwiss CERT (Computer Emergency Response Team) partnership appears on the THESS website, suggesting collaboration in cybersecurity or electromagnetic field safety assessment for critical infrastructure protection.

Scale indicators1 record

Recent moves5 records

Expansion highlights4 records

Broad incumbents

• ANSYS Inc. ANSYS offers HFSS, Maxwell, and other industry-standard electromagnetic simulation solvers used for EM exposure assessment, antenna design, and biomedical device modeling. THESS competes at the high-specialization tail of the same computational electromagnetics market that ANSYS dominates with broad enterprise simulation suites.
• Dassault Systèmes (SIMULIA / CST Studio): Dassault's SIMULIA brand, including CST Studio Suite, is a leading electromagnetic simulation platform for biomedical, telecom, and industrial EM applications. THESS addresses overlapping use cases (EM exposure, MRI safety, RF analysis) with a more bespoke service model versus Dassault's enterprise software approach.
• COMSOL Inc. COMSOL provides multiphysics simulation software widely used in academic and industrial EM, RF, and biomedical applications. THESS's custom computational electromagnetics solvers and research services compete with COMSOL's general-purpose platform, particularly for specialized EM exposure and biomedical simulations.
• Cadence Design Systems (AWR / Clarity): Cadence's AWR and Clarity products support RF/microwave and electromagnetic simulation for wireless and telecom system design. THESS's telecommunications electromagnetic analysis work overlaps with the customer base and use cases addressed by Cadence's simulation portfolio.
• Altair Engineering (FEKO): Altair's FEKO suite is a widely used electromagnetic simulation tool for antenna design, EMC, and bio-EM applications. THESS competes for specialized EM simulation projects where customers prefer custom solvers and consulting services over commercial FEKO licenses.

Direct peers

• Schmid & Partner Engineering AG (SPEAG): SPEAG develops measurement and simulation solutions for EM exposure assessment, including dosimetric and SAR evaluation tools aligned with safety standards. THESS's EM measurements and exposure assessment services target the same regulatory and research customers served by SPEAG's instruments and software.
• ZMT Zurich MedTech AG: ZMT provides simulation tools and services for the safety and efficacy of medical devices in electromagnetic environments, particularly MRI safety for active implants. THESS's MR safety testing and active implant modeling capabilities directly overlap with ZMT's core offering to implant manufacturers and research institutions.
• Remcom Inc. Remcom provides electromagnetic simulation software (XFdtd, X3D) for bio-electromagnetics, antenna design, and EM safety analysis. THESS's biomedical EM and exposure assessment services address overlapping customer use cases in MRI safety and non-ionizing radiation risk evaluation.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/thess-s-a

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about THESS S.A.