Assystem Tech Stack

Nuclear and renewable infrastructure engineering for the energy transition

Business Consulting and Services Courbevoie, Ile-de-France 5,001–10,000 employees Public Company

Assystem is a public engineering firm with 8,000 staff across 13 countries, anchored in nuclear but expanding into renewables, hydrogen, and grid modernization. The tech stack reveals a traditional infrastructure practice—ANSYS, PDMS, BIM, Primavera P6, CAD tools—now actively adopting digital twins (BIM, PLM) and cloud analytics (Databricks, Power BI). Hiring is heavily engineering-skewed (840 engineers vs. 57 across sales, data, and product combined) and accelerating, with active recruitment across Europe, Middle East, and Asia, signaling project pipeline growth.

Tech Stack 193 technologies

Core StackDatabricks Power BI Primavera P6 Java Angular GitLab SonarQube Jenkins PostgreSQL MySQL AWS Power Apps Power Automate SOLIDWORKS Solidworks AutoCAD Linux Windows Server Revit ANSYS PDMS IBM DOORS BIM Microsoft Project Dataverse SharePoint SQL PLM ESX Windows+160 more

AdoptingBIM PLM

What Assystem Is Building

◆Challenges

Optimizing performance of complex infrastructure projects
Nuclear safety compliance
Reducing project costs
Reducing delivery time
Nuclear decommissioning
Électrification des usages
Modernizing electrical grids
Strengthening stress engineering community
Strict security and safety requirements
Data governance

▲Active Projects

Epr2
Hinkley point c
Fusion and modular nuclear business unit
Nuclear power plant construction
Rail infrastructure projects
Fluid system development
Center of excellence for analysis and calculation methodology
Smr project
Modernization of electrical grids
Sizewell c

Hiring Activity

Accelerating950 roles · 470 in 30d

Department

Engineering

840

Ops

Data

Construction

Sales

Finance

Design

Product

Seniority

Mid

376

Senior

375

Junior

Manager

Lead

Principal

Intern

Director

Notable leadership hires: Team Lead Designer, Lead Auditor, Social Value Lead, Structure Lead, Team Lead

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About Assystem

Assystem designs, engineers, and supervises large-scale infrastructure projects in nuclear energy, renewables, hydrogen, and transport. The company operates across the full project lifecycle—from concept through construction supervision—and is broadening into digital transformation consulting for industrial customers. Major clients include state utilities, nuclear operators, and system integrators (EDF, Framatome, Naval Group, ITER, Rolls Royce, among others). Current project work spans new-build reactors (EPR2, Hinkley Point C, Sizewell C), modular nuclear, small reactors (SMR), fluid systems, rail infrastructure, and electrical grid modernization. The firm is headquartered in France and operates as a public company.

HeadquartersCourbevoie, Ile-de-France

Company Size5,001–10,000 employees

Hiring MarketsUnited Kingdom, France, Saudi Arabia, India, Kazakhstan, Canada, Uzbekistan

Frequently Asked Questions

What is Assystem's tech stack?

Engineering-focused: ANSYS (simulation), PDMS/Revit/AutoCAD (design), Primavera P6/Microsoft Project (scheduling), IBM DOORS (requirements), Java/Angular (development), PostgreSQL/MySQL (databases), AWS (cloud), Power BI (analytics), and SharePoint (collaboration). Now adopting BIM and PLM.

Is Assystem hiring engineers?

Yes. 840 of 948 active roles are engineering positions across all seniorities (mid: 376, senior: 375, junior: 65). Active recruitment in UK, France, Saudi Arabia, India, Kazakhstan, Canada, and Uzbekistan.

What projects is Assystem working on?

EPR2, Hinkley Point C, Sizewell C, fusion/modular nuclear units, small modular reactors (SMR), nuclear decommissioning, rail infrastructure, fluid system development, and electrical grid modernization across Europe and the Middle East.