Civil Engineering Consultancy

    Structural Engineering and Detailed Design

    ROKENG supports construction companies and engineering firms: structural calculations, geotechnical and retaining structures, EXE drawings, quantity surveying and BIM.

    Structural Calculations

    Reinforced, prestressed concrete, steel

    EXE Studies

    Formwork & reinforcement

    BIM & Quantities

    Models, take-offs, BOQ

    France & International

    Infrastructure, industry, buildings

    Our Services

    Our Engineering Services

    ROKENG supports construction companies and engineering firms with structural calculations, detailed design (EXE) studies, BIM and quantity surveying, in France and internationally.

    Structural Calculations

    Design and verification of reinforced concrete, prestressed concrete and steel structures. Calculation notes and numerical modeling.

    Geotechnical & Retaining Structures

    Design of shallow and deep foundations, diaphragm walls, retaining structures and buried structures. Soil–structure interaction studies.

    Detailed Design (EXE)

    Production of formwork drawings, reinforcement drawings, construction details and calculation notes adapted to site constraints.

    Quantity Surveying

    Detailed take-offs and bills of quantities from drawings or digital models: civil works, HVAC, plumbing and smoke extraction.

    Technical Assistance & Coordination

    Support for contractors and engineering firms in design–construction coordination, deliverable tracking and resolution of technical interfaces.

    BIM & Modeling

    3D structural modeling, use of BIM models, quantity extraction and support for model coordination.

    About Us

    An Engineering Firm Supporting Contractors and Design Offices

    ROKENG is a civil engineering consultancy specializing in structural calculations, detailed design studies, BIM and quantity surveying.

    Its founders have worked on infrastructure, bridge, underground and industrial civil engineering projects. This field experience shapes our studies towards deliverables that can be used directly on site.

    We support construction companies and engineering firms, in France and internationally, on building, industrial and infrastructure projects.

    Rigor

    Traceable, checked calculation notes

    Pragmatism

    Drawings adapted to site constraints

    Reliability

    On-time delivery and commitment

    Collaboration

    Close coordination with your teams

    Our Skills

    Technical Expertise for Complex Projects

    Skills in structural engineering, underground civil works and detailed design, applied to building, industrial and infrastructure projects.

    Our Skills

    • Reinforced & Prestressed Concrete
    • Steel Structures
    • Foundations & Retaining Structures
    • Calculation & Numerical Modeling
    • EXE Studies (Formwork / Reinforcement)
    • BIM & Quantity Surveying

    Our Fields of Work

    • Bridges & Railway Infrastructure
    • Underground & Buried Civil Works
    • Industrial Civil Engineering
    • Buildings & Complex Structures
    • Foundations & Retaining Structures
    • Design & Technical Interface Coordination
    Tools used depending on the assignment:SOFiSTiKPlaxis 2DRevitAutoCADArmacad
    Our References

    Projects & Experience

    Discover assignments carried out by ROKENG and reference projects its founders contributed to during their professional careers.

    Pipe culvert under a road (illustrative photo) — Hydraulic Structures StudiesIllustrative photoROKENG Assignment
    NSR Project

    Hydraulic Structures Studies

    Preliminary design of pipe culvert hydraulic crossings, including configurations with chambers. Deliverables: preliminary design notes.

    Aerial view of a road interchange (illustrative photo) — Road Infrastructure Quantity SurveyingIllustrative photoROKENG Assignment
    King Abdullah Interchange

    Road Infrastructure Quantity Surveying

    Preparation of quantities / BOQ for the structures studied under assignment IC 02.

    Saudi Arabia
    Underground concrete structure under construction (illustrative photo) — Grand Paris Express — Line 15: detailed design and design–construction coordinationIllustrative photoFounder Experience

    Grand Paris Express — Line 15: detailed design and design–construction coordination

    Work on the civil engineering structures of Line 15, with responsibilities in design–construction coordination, team management and monitoring of detailed design production. Organisation and scheduling of deliverables, management of interfaces between design offices and site, tracking of approvals and technical validations. Supervision of design teams and contribution to the production and follow-up of reinforcement drawings for reinforced concrete structures.

    Île-de-France, France
    Concrete bridge on tall piers (illustrative photo) — Larivot Bridge — detailed design of the deckIllustrative photoFounder Experience
    Deck built by the balanced cantilever method

    Larivot Bridge — detailed design of the deck

    Contribution to the detailed design of the Larivot bridge deck, built by the balanced cantilever method. Design and sizing of deck elements, preparation and follow-up of calculation notes and construction documents, taking into account the construction sequence, temporary situations and construction constraints.

    French Guiana
    Road bridge under construction with cranes (illustrative photo) — Detailed design of standard bridgesIllustrative photoFounder Experience
    Strasbourg Western Bypass · La Réunion · A75 Brioude

    Detailed design of standard bridges

    Detailed design of standard bridges on several projects: PRAD-type precast prestressed beam bridges on the Strasbourg Western Bypass (COS), filler-beam structures in La Réunion and slab bridges on the A75. Work included structural design, preparation of calculation notes and follow-up of construction documents, according to the scope of each project.

    Mainland France and overseas
    Thermal power plant and substation (illustrative photo) — Thermal power plant in French GuianaIllustrative photoFounder Experience

    Thermal power plant in French Guiana

    Technical management of civil engineering studies for an industrial design-and-build project. Experience gained by a founder before ROKENG was established.

    French Guiana
    Technical Blog

    Resources & Articles

    Field insights and technical notes on structural calculations, detailed design, geotechnics, quantity surveying and BIM.

    Careers

    Join the ROKENG Adventure

    ROKENG is expanding its design office in Ariana (Tunisia) for projects in France and internationally. Browse our openings or send us an open application.

    Varied Projects

    Bridges, underground, industrial and building works, in France and internationally.

    Skills Development

    Technical guidance from experienced engineers.

    Human-Scale Team

    A tight-knit team where everyone contributes directly to deliverables.

    Professional Tools

    SOFiSTiK, Plaxis 2D, Revit, AutoCAD and Armacad depending on the assignment.

    Job Openings

    Technical Director (M/F)

    Civil & structural engineeringAriana, Tunisia
    View the offer

    Projects in France and internationally. ROKENG is looking for a Technical Director to lead and grow its design office.

    Responsibilities
    • Provide technical and operational leadership of the design office: workload planning, priorities, quality, deadlines and project coordination.
    • Manage engineers and designers, recruit and develop the teams.
    • Supervise calculation notes, structural studies and EXE deliverables.
    • Lead several projects and the technical relationship with international clients.
    • Contribute to structuring methods, technical proposals and business development.
    Profile
    • Engineering degree in civil or structural engineering and at least 15 years of experience in a design office.
    • Proven management of technical teams and of complex projects.
    • Significant experience of international projects and working knowledge of the Eurocodes.
    • Autonomy, sound judgement, excellent French; professional English appreciated.

    Why join ROKENG : A central role in developing the design office, with real technical and managerial autonomy.

    Drafting Manager (M/F)

    Formwork & reinforcementAriana, Tunisia
    View the offer

    ROKENG is looking for a Drafting Manager to build, structure and lead its EXE drawing production team.

    Responsibilities
    • Build and lead a team of designers and draughtspeople in formwork and reinforcement.
    • Organise production, allocate workload, check drawings and meet issue deadlines.
    • Define drawing standards, title blocks, bar schedules and checking procedures.
    • Coordinate with calculation engineers, methods teams and site contacts.
    • Ensure drawings are consistent and buildable and follow up revisions until approval.
    Profile
    • Proven experience producing civil engineering formwork and reinforcement drawings.
    • Real experience managing designers or running a drawing office.
    • Proficiency in AutoCAD; experience with 3D production tools appreciated.
    • Rigour, autonomy, understanding of reinforced concrete and construction constraints.

    Why join ROKENG : The opportunity to build your own team and set the production standards of a growing design office.

    Temporary Works Designer (M/F)

    Civil engineeringAriana, Tunisia
    View the offer

    ROKENG is recruiting a Temporary Works Designer to prepare the drawings for construction stages and temporary works.

    Responsibilities
    • Prepare method drawings: construction stages, temporary installations, principle drawings, graphic method statements and construction sequences.
    • Produce the sections, details and setting-out drawings needed to prepare the works.
    • Take into account site, access, handling and interface constraints.
    • Update documents following exchanges with the methods, design and site teams.
    Profile
    • Technical training in civil engineering or construction drafting and experience in method drawings.
    • Excellent command of AutoCAD; ability to read civil engineering drawings and understand construction stages.
    • Autonomy, graphic precision and ability to work with site teams.

    Why join ROKENG : Varied assignments dealing with the practical issues of construction.

    Reinforcement Designer (M/F)

    Civil engineeringAriana, Tunisia
    View the offer

    ROKENG is recruiting a Reinforcement Designer to produce construction drawings for reinforced concrete structures.

    Responsibilities
    • Produce reinforcement drawings, sections, details, bar schedules and bar marks.
    • Incorporate calculation notes, geometric constraints, openings and technical interfaces.
    • Check consistency with formwork drawings and address checking comments.
    • Help improve standards and the quality of EXE packages.
    Profile
    • Training in civil engineering drafting and significant experience in reinforcement detailing.
    • Good knowledge of reinforced concrete detailing rules and drawing conventions.
    • Proficiency in AutoCAD; experience with dedicated reinforcement software appreciated.
    • Rigour, attention to detail and understanding of site constraints.

    Why join ROKENG : Work focused directly on EXE studies, with opportunities for technical progression.

    Open application

    Your profile doesn't match any opening? Calculation engineers, geotechnical engineers, designers, BIM modellers or quantity surveyors: send us an open application.

    Application form

    Apply to ROKENG

    Send us your application. We'll get back to you quickly.

    Confidentiality of your application. The information and documents sent through this form are used solely to assess your application and contact you. They are sent to ROKENG's management and the people in charge of recruitment, via the Resend e-mail delivery service, and are not shared with any other third party. Your file is kept for a maximum of 2 years after our last exchange, then deleted. You may request access to, correction or deletion of your data at any time by writing to recrutement@rokeng.fr.

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