++39

What ++39 does

++39 SRL, doing business as ++39 Engineering Architecture, is a multidisciplinary engineering and architecture consulting firm headquartered in Pesaro, Marche, Italy. Founded in 2007 and operating with 11-50 employees under a private SRL structure, the firm delivers three core service lines: Sea Energy Infrastructures (design of offshore platforms, subsea systems including suction piles, PLETS, FLETS, ILT and FSHR risers, and marine transportation/installation facilities), Civil Engineering & Architecture (project management, architectural and structural design, construction supervision, BIM, seismic assessment and improvement for new and existing works), and FEM Analysis (finite element analysis across linear/non-linear, static/dynamic regimes using internationally recognized software). The company combines these capabilities under one roof, allowing it to serve both marine/offshore clients and terrestrial civil/infrastructure clients from the same technical base.

The firm's revenue mechanics are project-based professional services, with work executed under direct B2B consulting engagements and long-running collaborations with larger prime contractors and public bodies. In oil & gas, ++39 has acted as a specialist sub-design partner to Saipem (Absheron subsea system, Azerbaijan, 2019-2022) and Proger (WHP2 fixed platform, Congo, 2019-2020), and has participated in flagship offshore developments including the Pre-Salt and Lula projects in Brazil (2013-2016), the LIZA project in Guyana (2018-2019) and the Cassiopea project in Italy (2022-2023). In civil engineering, the firm serves the Municipality of Pesaro, the University of Urbino 'Carlo Bo', the University of Camerino, and private developers such as Petrini Solustri & Partners, covering schools, auditoriums, sports halls, university buildings and residential developments. Pricing is quote-driven per project, with no publicly disclosed rates.

The company is founder-led, with Angelo Rosato serving as President, Sole Director and Technical Director, Stefano Ranieri as Board Member and Technical Director, and Antonio Montanaro as Administrative Director. Distribution is entirely direct, with no disclosed marketing campaigns, channel partners or digital GTM motion; business development relies on professional reputation, project portfolio and repeat collaboration with established prime contractors and public-sector clients across Italy, Brazil, Guyana, Congo and Azerbaijan.

Name

++39

Legal name

++39 SRL

Website

https://39-italy.it

Company type

Private

Founded year

2007

Operating status

Operating

Headcount range

11–50 employees

Short description

++39 is an Italian engineering and architecture consulting firm in Pesaro delivering sea energy (offshore/subsea structure design), civil engineering and FEM analysis services to oil & gas prime contractors and public-sector clients across Europe, South America, Africa and the Caspian region.

Ownership category

akta.pro rank

Headquarters

HQ city

Pesaro

HQ country

Italy

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Technology or R&D, Operations, Infrastructure, Marketing or Sales, Others

Revenue model

1. Engineering Consulting Services: Multidisciplinary engineering and architecture consulting services including sea energy infrastructure design, civil engineering & architecture, and FEM analysis provided to clients across Italy and internationally

Distribution channels1 record

Marketing channels1 record

Core offering

++39 SRL provides multidisciplinary engineering and architecture consulting services to enterprise and public-sector clients. Its core offerings are: (1) Sea Energy Infrastructures - design of offshore and subsea structures and transportation/installation facilities for oil and gas projects; (2) Civil Engineering & Architecture - project management, architectural and structural design, BIM, and construction supervision for new and existing works; (3) FEM Analysis - finite element analysis for mechanical and structural engineering using internationally recognized software.

Product overview

++39 SRL is an engineering and architecture consulting company providing multidisciplinary services. The company operates three main service offerings: Sea Energy Infrastructures (offshore and subsea structure design), Civil Engineering & Architecture (project management, architectural/structural design, construction supervision), and FEM Analysis (finite element analysis for mechanical and structural engineering). These services are delivered by a team of engineers, architects, and technicians providing creative and solid solutions from basic design to execution.

Differentiator

Problem solved

Functional benefit

Products and services

• Sea Energy Infrastructures Design of offshore and subsea structures and transportation and installation facilities for the oil and gas / sea energy industry. Solutions are based on robust industry experience and problem-solving capabilities, covering suction piles, PLETS, FLETS, jackets, decks, FSHR (Free Standing Hybrid Riser) systems, marine transportation, and installation facilities for clients such as Saipem and Proger.
• Civil Engineering & Architecture Project management, architectural and structural design, construction supervision, BIM, and safety services for new and existing works including recovery, renovation, and seismic improvement. Targeted at Italian municipalities, universities, religious/cultural institutions, and private developers across public infrastructure and residential/commercial buildings.
• FEM Analysis Finite element analysis (FEM) in mechanical and structural engineering fields, based on long experience in the field and delivered using advanced, internationally recognized software. Covers linear and non-linear, static and dynamic analysis across mechanical, civil, and geotechnical structures.

Named customers7 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Three partnerships are on record, tiered core and minor.

• SaipemcoreStrategic or Co-development PartnerOngoing collaboration on detailed design of subsea systems for the Absheron Project in Azerbaijan (2019-2022), including FLETS, mudmat and auxiliary structures. Saipem serves as client, with ++39 providing specialized subsea engineering expertise.
• ProgercoreStrategic or Co-development PartnerPartnership on detailed design of the WHP2 offshore platform structure including foundation piles, jacket and deck (Congo, 2019-2020). Proger as client with ++39 providing structural engineering services.
• Petrini Solustri & PartnersminorStrategic or Co-development PartnerStructural and geotechnical detailed design for Ex Colonie residential building project in Senigallia (2021-2022), providing engineering services for residential development.

Scale indicators1 record

Recent moves5 records

Expansion highlights5 records

Broad incumbents

• Technip Energies: Global engineering and technology firm with deep offshore and subsea engineering capabilities. Comparable in offshore platform and subsea system design, but at vastly larger scale and broader EPC scope.
• Saipem: Italian-headquartered global EPC contractor with deep offshore engineering and subsea installation expertise. Overlaps with ++39 on offshore platform and subsea structure design, but Saipem is many orders of magnitude larger and acts as ++39's client on multiple projects.
• Aker Solutions: Norwegian supplier of offshore engineering, subsea production systems, and offshore wind foundations. Comparable in offshore structural and subsea engineering scope, but a global incumbent with manufacturing and integrated EPC capabilities.
• Worley Limited: Global energy, chemicals, and resources engineering consultancy with extensive offshore and subsea engineering capability. Comparable in offshore structural design and energy project consulting, but at much larger scale with a broader portfolio.
• Subsea7: Global subsea engineering, construction, and services contractor working on offshore pipelines, structures, and SURF scopes. Comparable in subsea engineering knowledge and project types (suction piles, PLETs, ILTs), but with integrated installation fleet.
• Bureau Veritas Marine & Offshore: Global testing, inspection, and certification firm with marine and offshore engineering advisory services. Comparable in providing engineering assurance and technical consulting for offshore structures, but as a TIC incumbent rather than a design house.

Direct peers

• RINA S.p.A. Italian-headquartered engineering services, classification, and certification firm providing offshore, marine, and civil engineering consulting. Comparable in geography and diversified engineering services portfolio — RINA is the closest large Italian analogue to ++39's multi-disciplinary mix.
• Technital S.p.A. Italian engineering consultancy providing civil, structural, and infrastructure design for public and private clients. Comparable in being a mid-sized Italian multidisciplinary engineering firm serving both civil and infrastructure projects.
• Ramboll Group: European engineering, architecture, and consulting firm with offshore wind, marine, and structural engineering practices. Comparable in cross-disciplinary engineering/architecture consulting model and offshore/near-shore structural design work.
• Proger Group: Italian engineering firm providing offshore platform design, project management, and civil engineering services. Comparable in size, geography, and multidisciplinary engineering scope — Proger is also a ++39 client, making it a real-world equivalent across similar service lines.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat3 records

Key risks7 records

Key highlights7 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles10 records

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 ++39