THELESYS
Thelesys is a privately held Lyon-based engineering and IT consulting firm delivering fixed-price and time-based consulting services across 73+ domains in IT/cloud and industrial engineering to enterprise and public-sector clients across transport, defense, pharma, and energy verticals.
- Company typePrivate
- Founded2021
- HeadquartersLyon, France
- Headcount11–50
- GTM typeB2B
- OfferingServices
What THELESYS does
Thelesys is a privately held French engineering and IT consulting firm headquartered in Lyon, founded in 2021 by technology-focused entrepreneurs led by Director Renaud de Chefdebien. The company delivers consulting services across the full project lifecycle for regional, national, and international high-value-added clients, with a stated 73+ domains of expertise spanning IT/cloud computing (cybersecurity, data, DevOps, cloud, software engineering) and industrial engineering (mechanical, materials, mechatronics, electrical, electronics, automation, IoT, industrial computing). A complementary Strategy Consulting branch covers economic intelligence, innovation management, compliance, project restructuring, change management, and cybersecurity audits.
The firm's revenue mechanics are organized around two professional-services engagement models: Forfait (fixed-price deliverables with commitment to results) and Assistance Technique (time-based assistance with commitment to means). Distribution is direct enterprise field sales, supported by LinkedIn-led marketing, a corporate website, email newsletter, and selective industry event participation (e.g., Forum Innovation Défense Entreprise à Lyon, October 2024). Customer segments are vertically oriented across transport and mobility (automotive, aerospace, defense, rail, collective transport), industry, energy, IT/cloud, banking and insurance, pharmaceutical, and public sector (defense, intelligence, ministries).
Operational footprint is small (12-15 employees as of January 2025), but the client base includes Tier-1 industrial and defense logos (Thales, Michelin, KNDS, Vinci, RTE, Fives, Saint Gobain, Reel). Notable recent engagements include AI integration for Lyon metro security (November 2024), ADAS system development for an automotive client (December 2024), technological innovations for next-generation armored vehicles (September 2025), and pharmaceutical production-line automation (November 2025). The company initiated international service delivery in China and Turkey in March 2025. Ownership is founder-controlled with no disclosed institutional investors or parent company.
THELESYS firmographics
Firmographics- Name
- THELESYS
- Legal name
- Thelesys
- Website
- https://thelesys.com
- Company type
- Private
- Founded year
- 2021
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Thelesys is a privately held Lyon-based engineering and IT consulting firm delivering fixed-price and time-based consulting services across 73+ domains in IT/cloud and industrial engineering to enterprise and public-sector clients across transport, defense, pharma, and energy verticals.
- Ownership category
- akta.pro rank
THELESYS industry classification
Industry- Product category
- Engineering and IT Consulting Services
- NAICS
- Management Consulting Services (54161), Computer Systems Design and Related Services (54151), Management, Scientific, and Technical Consulting Services (5416)
- SIC
- Services-Management Consulting Services (8742), Services-Engineering Services (8711), Services-Computer Programming Services (7371), Services-Management Services (8741)
- akta.pro primary industry
- Strategy & IT Advisory (BPAEAAAA)
- akta.pro secondary industry
- Data, Analytics & AI Consulting (BPAHAEAF)
Keywords
Where THELESYS is headquartered
LocationHeadquarters
- HQ city
- Lyon
- HQ country
- France
- HQ region
- Europe
Offices3 records
Markets served
THELESYS business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Marketing or Sales, Technology or R&D, Others
Revenue model
- Consulting Services: Professional consulting and engineering services billed either as fixed-price deliverables (Forfait) or time-based assistance (Assistance Technique)
Go-to-market motion2 records
Distribution channels2 records
Marketing channels4 records
THELESYS product offering
Product offeringCore offering
Thelesys is a French consulting firm providing IT & Cloud Computing consulting and Industrial Engineering consulting, complemented by a Strategy Consulting branch. The firm supports regional, national, and international high-value-added clients across the full lifecycle of complex projects, delivering expertise through fixed-price (Forfait) and time-based (Assistance Technique) engagement models.
Product overview
Thelesys is a consulting and engineering services company offering integrated IT & Cloud Computing consulting and Industrial Engineering consulting, with a complementary Strategy Consulting branch. The core offering consists of consulting services organized by engagement model (Forfait/fixed-price and Technical Assistance/time-based), supported by project management and methodology services. The IT division covers cybersecurity, data, DevOps, cloud, and software engineering; the Industrial division spans mechanical, electrical, electronics, automation, and IoT disciplines. Strategy Consulting adds economic intelligence, innovation management, compliance, and cybersecurity audit capabilities.
Differentiator
Problem solved
Functional benefit
Products and services
- IT & Cloud Computing Consulting
Companies that use THELESYS
Customer profileNamed customers6 records
Segments7 records
Ideal customer profiles4 records
THELESYS technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
AI capability6 records
Feature4 records
THELESYS partnerships and signals
Strategic signalPartnerships
Eight partnerships are on record, tiered minor.
- KNDSminorDefense company shown as partner in the Thelesys ecosystem
- MichelinminorMajor industrial company shown as partner in Thelesys ecosystem
- ThalesminorTechnology and defense company shown as partner in Thelesys ecosystem
- REELminorIndustrial company shown as partner in Thelesys ecosystem
- VinciminorMajor construction and concessions group shown as partner
- RTEminorElectricity transmission network operator shown as partner
- FivesminorIndustrial engineering group shown as partner
- Saint GobainminorMajor materials company shown as partner in ecosystem
Scale indicators4 records
Recent moves6 records
Expansion highlights5 records
THELESYS competitors and assessment
Company assessmentBroad incumbents
- Sopra Steria: Major French IT services and consulting group; broader than Thelesys but competes directly for IT/cloud, cybersecurity, and digital transformation mandates with defense, transport, and energy clients.
- Capgemini Engineering (formerly Altran): Largest French-origin engineering and IT consulting player; competes for the same enterprise and defense clients but at much greater scale and breadth across geographies.
- Devoteam: European IT consulting firm with deep cloud, cybersecurity, and data expertise; broader portfolio but competes for the same digital transformation and cloud mandates in French enterprise accounts.
Direct peers
- Onepoint: French consulting firm combining strategy, digital, and technology transformation with significant defense and public-sector practice; overlaps with Thelesys's strategy and IT consulting offerings.
- SQLI: French digital services firm delivering IT consulting, software engineering, and digital transformation to enterprise clients across France and Europe; comparable boutique-to-mid-market positioning.
- Segula Technologies: Global engineering consultancy with strong French footprint in automotive, rail, defense, and energy — directly comparable in its industrial-engineering consulting offering targeting complex projects.
- Viveris Technologies: French IT and engineering consultancy with strong Lyon presence serving transport, energy, defense, and industry — overlaps geographically and by service mix with Thelesys.
- Akka Technologies: European engineering and digital consulting firm specializing in mobility, defense, and industrial clients; competes for similar technical-assistance and forfait engagements in the French market.
- Bertrandt: European engineering services partner focused on mobility, automotive, and industrial sectors with comparable forfait and technical-assistance engagement models in France.
- Alten: French-headquartered engineering and IT consulting firm with deep industrial and technology expertise across transport, energy, and defense — the closest scaled analogue to Thelesys's IT + industrial engineering consulting model.
Market position
Strengths4 records
Weaknesses4 records
Competitive moat3 records
Key risks6 records
Key highlights6 records
Customer concentration
THELESYS social profiles
Digital presenceTHELESYS financial estimates
Financial estimateRevenue estimate
Valuation estimate
THELESYS leadership team
Management profileNumber of profiles
Profiles2 records
THELESYS funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
THELESYS M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about THELESYS
What does THELESYS do?
Thelesys is a French consulting firm providing IT & Cloud Computing consulting and Industrial Engineering consulting, complemented by a Strategy Consulting branch. The firm supports regional, national, and international high-value-added clients across the full lifecycle of complex projects, delivering expertise through fixed-price (Forfait) and time-based (Assistance Technique) engagement models.
Is THELESYS a public or private company?
THELESYS is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was THELESYS founded?
THELESYS was founded in 2021. It employs 11 to 50 people.
Where is THELESYS based?
THELESYS is headquartered in Lyon, France, in the Europe region.
How does THELESYS make money?
One revenue line is on record: consulting Services.
Who are THELESYS's main competitors?
Broad incumbents on record are Sopra Steria, Capgemini Engineering (formerly Altran) and Devoteam. Direct peers are Onepoint, SQLI, Segula Technologies, Viveris Technologies, Akka Technologies, Bertrandt and Alten.
Does THELESYS have an API?
No public API is recorded for THELESYS.
What industry is THELESYS in?
THELESYS's product category is Engineering and IT Consulting Services. Its primary akta.pro industry code is BPAEAAAA, Strategy & IT Advisory, with a secondary code of BPAHAEAF, Data, Analytics & AI Consulting. Its NAICS code is 54161 and its SIC code is 8742.