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Wavestone

Management and digital transformation consulting

Consultant Intern - Cyb

Internship
€1.5k - €1.8k/mo
Bachelor's
Nantes, France
In Person
ConsultingTechnology & Systems Consulting

About the job

Requirements
  • Foundational knowledge of data, artificial intelligence, or digital transformation.
  • Understanding of enterprise artificial-intelligence use cases.
  • Basic knowledge of data and artificial-intelligence governance or operating models.
  • Basic knowledge of business analysis or organizational transformation.
  • Awareness of return on investment, key performance indicators, and value creation.
  • A recent graduate of a leading engineering or business school, with an engineering diploma or Grande École Programme degree.
  • A specialization or strong interest in data, artificial intelligence, or digital transformation.
  • Initial exposure through internships or projects to transformation or business-analysis topics.
  • Motivation to discover the consulting profession.
  • Curiosity, analytical and structuring ability, teamwork, client orientation, interest in change management, and oral and written communication skills.
  • Fluent French and English proficiency at a minimum C1 level.
Responsibilities
  • Conduct a state-of-the-art review of artificial-intelligence-assisted penetration testing and red teaming, including reconnaissance, exploitation, post-exploitation, social engineering, reporting, offensive-community experience, and academic benchmarks.
  • Map market tools including PentestGPT, HackerGPT, WhiteRabbitNeo, HackingBuddyGPT, Claude Code and Codex agents, and specialized MCP servers for Burp Suite, Nmap, Metasploit, BloodHound, and Nuclei.
  • Analyze infrastructure constraints involving public, private, and local large language models, including Ollama and vLLM, sovereignty, SecNumCloud, EU Data Boundary, client-data confidentiality, and reversibility.
  • Study economic and technical constraints including API-token pricing, cloud graphics-processing-unit costs, licenses, commercial-model guardrails, legitimate-use strategies, and specialized unbridled models.
  • Design a Wavestone selection framework linking use case, model, infrastructure, and tooling using cost, quality, confidentiality, and compliance criteria.
  • Formalize an ethical and contractual framework covering authorized scope, standard clauses in testing agreements, logging, and human supervision.
  • Implement an offensive-assistance agent proof of concept in a controlled environment and measure time, coverage, and deliverable-quality gains.
  • Document an AI-augmented offensive-security playbook and an externally usable pitch deck for chief information security officers and cybersecurity leadership.
  • Contribute to pitches and commercial proposals, particularly with the Red Team practice, and participate in the Wavestone AI and Data community.
Desired Qualifications
  • Academic or internship experience on data or artificial-intelligence projects.
  • Awareness of governance, responsible artificial intelligence, or regulatory issues.
  • Initial experience facilitating workshops or managing projects.

About the company

Wavestone provides management and digital consulting to help large organizations carry out complex transformations. Its services combine strategy, change management, and technology implementation to guide clients from plan to outcome. The core method centers on cultivating a shared culture of enthusiasm for change, called The Positive Way, so strategies are adopted smoothly, projects stay sustainable, and stakeholders trust the process. With about 3,000 consultants across four continents, the company supports transformation programs from ideation to execution on a global scale. Wavestone differentiates itself by placing culture and positive mindset at the heart of its approach, pairing management consulting with digital expertise to drive lasting change. The goal is to enable successful, enduring transformations that deliver measurable business value while engaging people in the change journey.

Company Size

5,001-10,000

Company Stage

IPO

Headquarters

Puteaux, France

Founded

1990

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Simplify's Take

What believers are saying

  • Wavestone targets 2026/27 revenue from -1% to low-single-digit growth after Q1 weakness.
  • Order book reached 4.5 months on June 30, 2026, improving visibility.
  • AI Builders and Sand Cherry expand AI and North American delivery immediately.

What critics are saying

  • Q1 2026/27 revenue fell 2%; utilization stayed weak at 71%.
  • Management cut recurring operating margin guidance to 11%-13% on July 29, 2026.
  • If AI pivot fails, boutiques and hyperscalers squeeze Wavestone's core advisory franchise.

What makes Wavestone unique

  • Wavestone spans management and digital consulting across 4 continents and 6,122 employees.
  • AI Builders adds AI strategy, governance, and change management from July 29, 2026.
  • Sand Cherry gives Wavestone a stronger U.S. transformation platform in Denver.

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Benefits

Health Insurance

Dental Insurance

Vision Insurance

Life Insurance

Disability Insurance

Health Savings Account/Flexible Spending Account

401(k) Retirement Plan

Unlimited Paid Time Off

Growth & Insights and Company News

Headcount

6 month growth

-6%

1 year growth

-6%

2 year growth

-6%
Advertisement Shout
Oct 7th, 2026
Milliman expands UK offering with new business advisory practice.

Milliman expands UK offering with new business advisory practice. Milliman, Inc., a global consulting and actuarial firm, has established a new business advisory practice in the UK as it broadens the support it provides to organisations across the insurance, investment, and retirement sectors. The firm has appointed Callum Mayor and David Laird as managing directors to lead the new practice. Milliman said the appointments form part of its efforts to provide clients with additional support on strategic, operational and organisational challenges. "There's never been more pressure on insurers and asset managers to turn strategy into results," commented Mayor. "This new practice adds to Milliman's deep sector expertise with the pace and hands-on experience needed to deliver lasting change for our clients." Milliman said its business advisory offering will bring together the firm's existing technical and sector expertise with practical consulting capabilities. The practice will work with clients on areas including business transformation, operational change and the implementation of strategic initiatives. According to Milliman, financial services organisations are having to respond to a combination of regulatory requirements, market volatility, technological developments, artificial intelligence adoption and ongoing pressure on costs. The new practice is intended to complement Milliman's existing services, as well as its recently launched AI Solutions practice. The firm's UK business advisory services will cover post-transaction integration, operating model transformation, change management, data, AI and technology, risk, regulation and resilience, and finance and actuarial transformation. Mayor brings 25 years of experience working with boards and executive teams on transformation, growth and integration across financial services. He joins the firm from Wavestone, where he was a partner focused on the insurance sector, and previously held a partnership role at PEN Partnership. Laird joins Milliman from Wavestone, where he led the wealth and asset management practice. He has also held senior positions at PEN Partnership, KPMG and EY. Laird has more than 25 years of experience advising organisations on strategic change across the insurance and asset management sectors. The appointments give Milliman's new UK practice senior expertise across insurance, wealth and asset management, supporting the firm's wider advisory work in financial services. Spread the love

NewsnReleases
Sep 14th, 2026
Wavestone acquires US consulting firm Sand Cherry for up to $47M

French consulting firm Wavestone has acquired Denver-based Sand Cherry for up to $47 million, strengthening its presence in the US market. The deal comprises an initial $35 million, with up to $12 million contingent on performance through December 2027. Sand Cherry, founded in 2001, employs approximately 130 staff and specialises in business transformations for Fortune 200 clients across technology, media, telecommunications, energy and utilities sectors. The firm has averaged over 15% annual growth in recent years and targets $31.5 million revenue for fiscal 2026 with a 15% adjusted EBITDA margin. The acquisition increases Wavestone's North American revenue to around $120 million and headcount to nearly 370 employees. Sand Cherry will be consolidated into Wavestone's accounts from 1 September 2026.

Dentons
Sep 2nd, 2026
Dentons advises Wavestone on its combination with AI Builders.

Dentons advises Wavestone on its combination with AI Builders. September 2, 2026 Paris - Dentons has advised Wavestone, a global consulting firm listed on Euronext Paris, on its combination with AI Builders, a leading French consulting firm specializing in AI and data strategy. Founded in 2019, AI Builders supports the leaders of large organizations in defining, organizing and scaling their AI transformations. The firm combines expertise in strategy, governance, AI product management, implementation and change management. Wavestone brings its international scale, business, industry and technology expertise, together with its ability to industrialize and deploy complex transformations at scale. By combining their expertise, Wavestone and AI Builders now offer integrated support spanning AI strategy through value creation, including data governance, AI products, organizational transformation and user adoption. Paris-based partners Olivia Guéguen and Laura Godard led Dentons' legal team, assisted by associate Lisa Morand in Corporate and M&A; partner Katell Déniel-Allioux and counsel Julie Ragueneau in Employment; partner Maxime Simonnet and associate Simon Bernard in Real Estate; partner Emmanuelle van den Broucke and associate Suzanne Darkazanli in Competition; and partner Marc Fornacciari and associate Chloé Gimenez in Public Law and Regulatory. About dentons. Redefining possibilities. Together, everywhere. For more information visit dentons.com

Decideo
Jul 31st, 2026
Wavestone acquires AI Builders for $21.8M amid 29% share price drop and revised targets

Wavestone has acquired AI Builders for €19.3 million in cash to strengthen its artificial intelligence capabilities. Founded in 2019, AI Builders employs around 50 consultants specialising in AI strategy and data, targeting €10.3 million in revenue for 2026 with 15% adjusted EBITDA. The acquisition comes as Wavestone faces headwinds. The consulting firm reported a 2% organic revenue decline for Q1 2026/27 and lowered its annual operating margin guidance to 11-13%, down from approximately 13% previously. The disappointing results triggered a 29% share price drop on 30 July. The deal highlights a broader industry trend: consultancies racing to acquire AI expertise as client budgets shift from traditional transformation projects to AI initiatives faster than firms can reallocate their own resources.

Wavestone
Dec 10th, 2025
Wavestone awarded at the 2025 Syntec Conseil Grand Prix

Wavestone awarded at the 2025 Syntec Conseil Grand Prix. December 10, 2025 - News In brief. * Wavestone received two Silver Awards at the 2025 Syntec Conseil Grand Prix * The jury recognized the France Identité secure digital wallet project with France Titres (ANTS) and a scientific program on the future of floating wind power with TotalEnergies At the 6th edition of the Grand Prix Syntec Conseil, Wavestone won two Silver Awards, a major recognition for innovative and high-impact projects. These distinctions highlight the commitment of our clients and teams in driving ambitious transformations, serving both performance and sustainability: * The development of France Identité for citizens, a secure digital wallet combining local accessibility, expanded use cases, and European reach, with France Titres - Agence nationale des titres sécurisés (ANTS). * The creation of a scientific program for the floating wind power of tomorrow with TotalEnergies Congratulations to all the teams involved, thank you to Syntec Conseil for this award, and to our clients for their trust.