HR Consulting, Change Management & Training
An independent boutique firm founded by two Chief HR Officers from international groups, SYNCHRO accompanies you in your strategic projects with pragmatism — fully integrating the human dimension, key to lasting success.
SYNCHRO was founded in 2023 from the combined experience of Xavier Broseta and Laurent Rebischung — two CHROs who held positions in various international groups (family, private, public). They are joined by Corinne Margot, an experienced CHRO in industry and growth companies.
We bring a practitioner's perspective: no disconnected theoretical models, but a precise reading of organisational realities and the ability to implement solutions tailored to your context.
“Reconciling long-term vision with pragmatism in implementation — that is what differentiates a consultancy that truly transforms from one that merely recommends.”
Operational careers within diverse international companies (family groups, private, public...). Corinne, Xavier & Laurent work personally alongside you.
For 10 years, I headed the HR functions of major companies (Air France, Bolloré and Canal+). This experience allowed me to work alongside great leaders and learn from them, particularly on aligning strategy and HR policies. I also led many transformations. At Air France, for example: designing and implementing a plan that cut payroll costs by 20% and rolling out fully redesigned HR processes. Over these years, I also gained solid experience in crisis management, particularly social crises.
Before that, 10 years at Thales in various roles – divisional and international CHRO, and Head of Recruitment – gave me strong experience of operational HR approaches in a highly process-driven and international environment. Early in my career, 7 years at the French Ministry of Labour and the national health insurance system gave me a sound understanding of how social administrations operate.
I taught at Sciences Po for 8 years and have been teaching at the Sorbonne for more than 15 years (Master’s 2 in Human Resources) and at the École des Mines de Paris.
Graduate of ENS Cachan and ENA
My 11 years at Air France-KLM, alternating between operational and corporate HR roles, taught me in particular – in a socially complex Franco-Dutch environment – to address strategic issues while always anticipating how they will play out on the ground and the main changes they bring. I was thus able to contribute directly to Air France’s major transformation plans and to lead the group’s Employee Experience project.
The desire to experience another culture and take on a new professional challenge led me in 2017 to join the Bolloré group as divisional CHRO (some thirty companies of varying sizes in Europe, the USA and Asia), then as Director of HR Development and Social Responsibility Programmes for the entire group (130 countries). In particular, I led the restructuring and subsequent sale of the electric car-sharing businesses following the end of Autolib’ in 2018, and in my last role coordinated recruitment, the corporate university, talent development programmes and HR’s contribution to the group’s CSR policy.
My wife’s recruitment at the end of 2022 by an independent Swiss watchmaking house was the opportunity to develop the entrepreneurial project of Synchro and to launch the business in Switzerland alongside Xavier Broseta in May 2023 (subsidiary opened in Geneva in 2025). I have since joined the CCIG, the aaa foundation in Lausanne on intergenerational issues, and the Initiative Grand Annecy network.
Finally, on a more personal note, I trained in co-development and have experimented with various methods of experience sharing and collective intelligence (tutoring, reverse mentoring, shadow executive committees, hackathons, …). I have also been teaching at CELSA (Sorbonne University) for 10 years, in the final year of the Master’s in HR & Organisations.
Graduate of CELSA, Paris
Throughout my career, I have had the opportunity to work in listed groups, family-owned mid-sized companies and start-ups, always with an international dimension. I have mainly supported the development of industrial and high-tech companies (Matra Mhs, Soitec) and sector specialists (Beneteau, Groupe Le Duff).
I have contributed to the successful delivery of major growth projects (organic or through acquisitions) by putting in place suitable HR processes, developing skills, building constructive relationships with the various stakeholders (including social partners) and supporting leadership teams.
On several occasions, I introduced high-performing HR information systems in France and internationally, and used HR data to build a forward-looking HR vision, notably with the help of AI (payroll, employee sentiment, for example). I have also often taken part in programmes to improve workplace safety and employees’ mental health.
I am an independent board member of 2 major companies (high-tech / services).
Postgraduate degrees in European law (DEA) and Business Administration (DESS) — IAE
We personally intervene at every stage of your projects — upstream to analyse, during to adapt, and downstream to consolidate.
An external perspective from experienced CHROs supporting the evolution of your organisations.
Evolution of HR & managerial practices combining human expertise, innovation and AI.
Design and delivery of bespoke training combining targeted academic input and peer experience sharing to work on postures (practical cases, role-play...).
On an individual and collective basis, operational support for executives in the context of new strategic projects, onboarding or complex social situations.
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Création et coanimation d'un club de DRH d'entreprises suisses (luxe, banque, industrie…)
Ambassadeur et membre actif de la Chambre de commerce, d'industrie et des services de Genève depuis la création de Synchro Consulting
Vice-président bénévole de la Fondation aaa, créée en 2015 à Lausanne et dédiée à la collaboration intergénérationnelle en entreprise
Création et coanimation des réseaux alumni suisses de Sorbonne Université et du Celsa
Our analyses, publications and events to help make sense of how work and organisations are changing.
Employee experience covers all the interactions an employee has with a company, from recruitment through to departure. Three in-depth articles by Laurent Rebischung and Xavier Broseta.
More frequent change, digital transformation and a shifting relationship with work: HR is expected to deliver on every front, sometimes at the expense of its own health. A few ways to cope.
Co-hosted with Figures, this morning event brought together HR directors for a progress update on the European pay transparency directive.
Insights, events and news from the SYNCHRO team, straight from our LinkedIn page.
Follow usOur LinkedIn feed will be available here very soon.
See our posts on LinkedIn →An innovative club for HR directors
Present & Future
Made up of around ten senior HR directors from every sector, this Club exists to offer a space for dialogue and inspiration on the present and future of human resources and management.
Topics are chosen by the group and alternate between external speakers, input from Synchro and sharing among peers, in complete confidentiality and goodwill.
Examples of topics covered
From 2024, SYNCHRO formalised its CSR commitments — proportionate to our activity and size, and genuinely put into practice.
A transformation project, a diagnostic, a seminar? Let's talk — no obligation, and with candour.
Dernière mise à jour : 30 octobre 2026
Le présent site est édité par :
Pour la France — SYNCHRO, société par actions simplifiée (SAS) au capital de 6 000 €, immatriculée au RCS de Paris sous le numéro 952 472 769 (SIRET du siège : 952 472 769 00019), dont le siège social est situé 29 boulevard Edgar Quinet, 75014 Paris. N° de TVA intracommunautaire : FR79952472769.
Pour la Suisse — Synchro Consulting Sàrl, c/o BRH Partners LLC, avenue de Miremont 12, 1206 Genève, inscrite au registre du commerce du canton de Genève sous le numéro IDE CHE-237.792.460.
Contact : contact@synchro-consulting.fr
Directeurs de la publication : Xavier Broseta & Laurent Rebischung, co-fondateurs.
Déclaration d'activité enregistrée sous le numéro 11 75 71639 75 auprès du préfet de la région Île-de-France. Cet enregistrement ne vaut pas agrément de l'État.
SYNCHRO est certifié Qualiopi au titre de la catégorie « Actions de formation » (certificat n° CAP1861, délivré par CAPCERT, valable jusqu'au 21 mai 2028).
Netlify, Inc. — 101 2nd Street, San Francisco, CA 94105, États-Unis — privacy@netlify.com — www.netlify.com
L'ensemble des contenus de ce site (textes, visuels, logos, présentations, mise en page) est protégé par le droit de la propriété intellectuelle et reste la propriété exclusive de SYNCHRO ou de ses partenaires. Toute reproduction, représentation ou adaptation, totale ou partielle, sans autorisation écrite préalable est interdite.
Les logos des clients présentés sur ce site appartiennent à leurs titulaires respectifs et sont reproduits avec leur accord.
Conception et réalisation : MAWI Agency.
Les informations publiées sur ce site sont fournies à titre indicatif et ne constituent pas un conseil personnalisé. SYNCHRO s'efforce d'en assurer l'exactitude et la mise à jour, sans pouvoir garantir l'absence d'erreur ou d'omission. SYNCHRO ne saurait être tenu responsable du contenu des sites tiers vers lesquels des liens renvoient.
Le traitement de vos données personnelles est décrit dans notre politique de confidentialité.
Les présentes mentions sont régies par le droit français pour l'entité française et par le droit suisse pour l'entité suisse. Tout litige relève des juridictions compétentes du siège de l'entité concernée, sous réserve des dispositions impératives applicables.
Dernière mise à jour : 30 octobre 2026
SYNCHRO attache une grande importance à la protection de vos données personnelles. Cette politique explique quelles données nous traitons, pourquoi, et quels sont vos droits, conformément au Règlement général sur la protection des données (RGPD) et à la loi fédérale suisse sur la protection des données (nLPD).
SYNCHRO, 29 boulevard Edgar Quinet, 75014 Paris, pour les personnes situées dans l'Union européenne, et Synchro Consulting Sàrl, c/o BRH Partners LLC, avenue de Miremont 12, 1206 Genève, pour les personnes situées en Suisse. Contact unique pour toute question : contact@synchro-consulting.fr.
Données que vous nous transmettez via les formulaires de contact et de demande d'information sur le Club : prénom, nom, fonction, entreprise, adresse e-mail professionnelle et contenu de votre message. Les champs marqués d'un astérisque sont nécessaires pour vous répondre.
Données techniques : lors de votre visite, notre hébergeur enregistre automatiquement des journaux de connexion (adresse IP, date et heure, navigateur, pages demandées), utilisés uniquement pour assurer la sécurité et le bon fonctionnement du site.
Ce site ne dépose aucun cookie sans votre accord et n'utilise aucun traceur publicitaire. La mesure d'audience (Google Analytics) ne s'active que si vous l'acceptez dans le bandeau affiché lors de votre première visite. Les polices de caractères sont hébergées sur nos propres serveurs.
Vos données ne sont jamais vendues, louées ni utilisées à des fins de prospection par des tiers.
Vos données sont accessibles uniquement aux associés et consultants de SYNCHRO qui traitent votre demande, ainsi qu'à nos prestataires techniques agissant sur nos instructions : Netlify (hébergement du site et réception des formulaires, dont une copie est conservée dans notre espace sécurisé Netlify) et Microsoft (messagerie Microsoft 365, dans laquelle chaque demande nous est transmise par e-mail).
Certains prestataires (Netlify, Microsoft) sont établis aux États-Unis. Ces transferts sont encadrés par des garanties appropriées : certification au Data Privacy Framework UE–États-Unis et Suisse–États-Unis, ou clauses contractuelles types de la Commission européenne, reconnues par le Préposé fédéral à la protection des données et à la transparence (PFPDT).
Le site est servi exclusivement en HTTPS (chiffrement TLS) et protégé par des en-têtes de sécurité stricts. L'accès aux données est limité aux seules personnes habilitées, avec authentification renforcée sur les outils utilisés.
Vous disposez d'un droit d'accès, de rectification, d'effacement, de limitation, d'opposition et de portabilité de vos données, ainsi que du droit de définir des directives relatives à leur sort après votre décès (en France). Pour les exercer, écrivez-nous à contact@synchro-consulting.fr ; nous vous répondrons dans un délai d'un mois.
Vous pouvez également introduire une réclamation auprès de la CNIL (3 place de Fontenoy, TSA 80715, 75334 Paris Cedex 07 — www.cnil.fr) ou, en Suisse, auprès du PFPDT (Feldeggweg 1, 3003 Berne — www.edoeb.admin.ch).
Avec votre accord uniquement, nous utilisons Google Analytics 4 (Google Ireland Ltd / Google LLC) pour mesurer la fréquentation du site et améliorer son contenu : pages consultées, durée de visite, type d'appareil, pays d'origine. Ces statistiques sont anonymisées et ne servent jamais à de la publicité. Les cookies correspondants (_ga, _ga_*) sont conservés 13 mois au maximum ; votre choix est conservé 6 mois. Des données peuvent être transférées aux États-Unis, dans le cadre du Data Privacy Framework UE–États-Unis et Suisse–États-Unis. Vous pouvez modifier votre choix à tout moment via le lien « Gérer les cookies » en bas de page.
Le fil « Nos dernières publications » est fourni par Elfsight, qui affiche les publications de notre page LinkedIn. Il ne se charge qu'après votre accord, en cliquant sur « Afficher les publications ». Elfsight et LinkedIn peuvent alors déposer des cookies et traiter certaines données de navigation (adresse IP notamment) selon leurs propres politiques de confidentialité. Votre choix est mémorisé dans votre navigateur ; vous pouvez le retirer à tout moment avec le lien « Masquer le fil LinkedIn et retirer mon accord » situé sous le fil.
Cette politique peut être mise à jour, notamment en cas d'évolution du site ou de la réglementation. La date de dernière mise à jour figure en tête de page.
Last updated: 30 October 2026
This English version is provided for convenience. The French version prevails.
This website is published by:
France — SYNCHRO, a French simplified joint-stock company (SAS) with a share capital of €6,000, registered with the Paris Trade and Companies Register under number 952 472 769 (head-office SIRET: 952 472 769 00019), registered office at 29 boulevard Edgar Quinet, 75014 Paris, France. EU VAT number: FR79952472769.
Switzerland — Synchro Consulting Sàrl, c/o BRH Partners LLC, avenue de Miremont 12, 1206 Geneva, registered with the Geneva Commercial Register under UID CHE-237.792.460.
Contact: contact@synchro-consulting.fr
Publication directors: Xavier Broseta & Laurent Rebischung, co-founders.
Training activity registered under number 11 75 71639 75 with the Prefect of the Île-de-France region. This registration does not constitute State approval.
SYNCHRO holds Qualiopi certification for “Training activities” (certificate no. CAP1861, issued by CAPCERT, valid until 21 May 2028).
Netlify, Inc. — 101 2nd Street, San Francisco, CA 94105, USA — privacy@netlify.com — www.netlify.com
All content on this website (texts, visuals, logos, presentations, layout) is protected by intellectual property law and remains the exclusive property of SYNCHRO or its partners. Any reproduction, representation or adaptation, in whole or in part, without prior written consent is prohibited.
Client logos shown on this website belong to their respective owners and are reproduced with their consent.
Design and development: MAWI Agency.
The information on this website is provided for general purposes only and does not constitute personalised advice. SYNCHRO endeavours to keep it accurate and up to date but cannot guarantee that it is free of errors or omissions. SYNCHRO is not responsible for the content of third-party websites linked from this site.
How we process your personal data is described in our privacy policy.
This notice is governed by French law for the French entity and by Swiss law for the Swiss entity. Any dispute falls within the jurisdiction of the competent courts at the registered office of the entity concerned, subject to mandatory provisions.
Last updated: 30 October 2026
This English version is provided for convenience. The French version prevails.
SYNCHRO takes the protection of your personal data seriously. This policy explains what data we process, why, and what your rights are, in accordance with the EU General Data Protection Regulation (GDPR) and the Swiss Federal Act on Data Protection (FADP).
SYNCHRO, 29 boulevard Edgar Quinet, 75014 Paris, France, for individuals in the European Union, and Synchro Consulting Sàrl, c/o BRH Partners LLC, avenue de Miremont 12, 1206 Geneva, for individuals in Switzerland. Single point of contact: contact@synchro-consulting.fr.
Data you provide through the contact and Club information forms: first name, last name, job title, company, business e-mail address and the content of your message. Fields marked with an asterisk are required for us to reply.
Technical data: when you visit, our hosting provider automatically records connection logs (IP address, date and time, browser, pages requested), used solely to keep the website secure and running properly.
This website sets no cookies without your consent and uses no advertising trackers. Audience measurement (Google Analytics) is only activated if you accept it in the banner shown on your first visit. Fonts are hosted on our own servers: no data is sent to Google.
Your data is never sold, rented or used for marketing by third parties.
Your data is accessible only to the SYNCHRO partners and consultants handling your request, and to our technical service providers acting on our instructions: Netlify (website hosting and form reception, with a copy kept in our secure Netlify workspace) and Microsoft (Microsoft 365 e-mail, to which each request is forwarded).
Some providers (Netlify, Microsoft) are based in the United States. These transfers are covered by appropriate safeguards: certification under the EU–US and Swiss–US Data Privacy Framework, or the European Commission's standard contractual clauses, recognised by the Swiss Federal Data Protection and Information Commissioner (FDPIC).
The website is served exclusively over HTTPS (TLS encryption) and protected by strict security headers. Access to data is limited to authorised persons only, with strong authentication on the tools we use.
You have the right to access, rectify, erase, restrict, object to and port your data, and, in France, to set instructions regarding your data after your death. To exercise these rights, write to contact@synchro-consulting.fr; we will reply within one month.
You may also lodge a complaint with the CNIL (3 place de Fontenoy, TSA 80715, 75334 Paris Cedex 07, France — www.cnil.fr) or, in Switzerland, with the FDPIC (Feldeggweg 1, 3003 Bern — www.edoeb.admin.ch).
Only with your consent, we use Google Analytics 4 (Google Ireland Ltd / Google LLC) to measure website traffic and improve its content: pages viewed, visit duration, device type, country of origin. These statistics are anonymised and never used for advertising. The related cookies (_ga, _ga_*) are kept for 13 months at most; your choice is kept for 6 months. Data may be transferred to the United States under the EU–US and Swiss–US Data Privacy Framework. You can change your choice at any time via the “Manage cookies” link at the bottom of the page.
The “Our latest posts” feed is provided by Elfsight, which displays posts from our LinkedIn page. It only loads after your consent, when you click “Show the posts”. Elfsight and LinkedIn may then set cookies and process certain browsing data (including your IP address) under their own privacy policies. Your choice is stored in your browser; you can withdraw it at any time with the “Hide the LinkedIn feed and withdraw my consent” link below the feed.
This policy may be updated, in particular if the website or the regulations change. The date of the last update appears at the top of the page.
