Engineer - Collaborative File System Over Ipfs

Le descriptif de l’offre ci-dessous est en Anglais_

**Type de contrat**: CDD

**Niveau de diplôme exigé**: Bac + 5 ou équivalent

**Fonction**: Ingénieur scientifique contractuel

**Niveau d'expérience souhaité**: Jeune diplômé

**Contexte et atouts du poste**:
About Hive:
Hive intends to play the role of a next generation cloud provider in the context of Web 3.0. Hive aims to exploit the unused capacity of computers to offer the general public a greener and more sovereign alternative to the existing clouds where the true power lies in the hands of the users. It relies both on distributed peer-to-peer networks and on the encryption of end-to-end data.

About Inria Center of the University of Lorraine:
The Inria Center of the University of Lorraine is one of Inria's nine centers and has twenty project teams, located in Nancy, Strasbourg and Saarbrücken. Its activities occupy over 400 people, scientists and research and innovation support staff, including 45 different nationalities. The Inria Center is a major and recognized player in the field of digital sciences. It is at the heart of a rich R&D and innovation ecosystem: highly innovative PMEs, large industrial groups, competitiveness clusters, research and higher education players, laboratories of excellence, technological research institutes, etc.

About Inria Center of the University of Rennes:
The Inria Center of the University of Rennes is one of Inria's eight centers and has more than thirty research teams. The Inria Center is a major and recognized player in the field of digital sciences. It is at the heart of a rich R&D and innovation ecosystem: highly innovative PMEs, large industrial groups, competitiveness clusters, research and higher education players, laboratories of excellence, technological research institutes, etc.

**Mission confiée**:
In [2] an operation-based set CRDT was developed over IPFS. The goal of this engineer position is to develop an operation-based file system CRDT whose specification can be inspired from [3,4].

The engineer will closely work together with a PhD student on this topic.

[1] M. Shapiro, N. M. Preguiça, C. Baquero, and M. Zawirski. “Conflict-Free Replicated Data Types”. In: 13th International Symposium on Stabilization, Safety, and Security of Distributed Systems, SSS 2011. Oct. 2011, pp. 386-400. doi: 10.1007/978-3-642-24550-3_29.

[2] Quentin Acher, Claudia-Lavinia Ignat, Shadi Ibrahim:
[4] Vinh Tao, Marc Shapiro, Vianney Rancurel. Merging semantics for conflict updates in geo-distributed file systems. SYSTOR 2015: 10:1-10:12

**Principales activités**:

- Study of literature on CRDTs (1 months)
- Study CRDTs for file systems (2 months)
- Design of an operation-based file system CRDT with merging semantics that satisfy user intentions (6 months)
- Implementation of the proposed CRDT over IPFS (9 months)

**Compétences**:
Engineering and/or Master 2 degree in Computer science / Applied mathematics with an experience in computer networks.
Theoretical expertise: distributed systems, P2P networks

Good collaborative and networking skills, excellent written and oral communication in English
Good programming skills
Strong analytical skills

**Avantages**:

- Subsidized meals
- Partial reimbursement of public transport costs
- Leave: 7 weeks of annual leave + 10 extra days off due to RTT (statutory reduction in working hours) + possibility of exceptional leave (sick children, moving home, etc.)
- Possibility of teleworking (after 6 months of employment) and flexible organization of working hours
- Professional equipment available (videoconferencing, loan of computer equipment, etc.)
- Social, cultural and sports events and activities
- Access to vocational training
- Social security coverage

**Rémunération**:
From €2692 gross/month depending on experience and qualifications

**Informations générales**:

- **Thème/Domaine**: Systèmes distribués et intergiciels
Ingénierie logicielle (BAP E)
- **Ville**: Villers lès Nancy
- **Centre Inria**: Centre Inria de l'Université de Lorraine
- **Date de prise de fonction souhaitée**: 2025-10-01
- **Durée de contrat**: 12 mois
- **Date limite pour postuler**: 2025-08-15

**Consignes pour postuler**:
**Sécurité défense**:
Ce poste est susceptible d’être affecté dans une zone à régime restrictif (ZRR), telle que définie dans le décret n°2011-1425 relatif à la protection du potentiel scientifique et technique de la nation (PPST). L’autorisation d’accès à une zone est délivrée par le chef d’établissement, après avis ministériel favorable, tel que défini dans l’arrêté du 03 juillet 2012, relatif à la PPST. Un avis ministériel défavorable pour un poste affecté dans une ZRR aurait pour conséquence l’annulation du recrutement.

**Politique de recrutement**:
Dans le cadre de sa politique diversité, tous les postes Inria sont accessibles aux personnes en situation de handicap.

**Contacts**:

- **Équipe Inria**: COAST
- **Recruteur**:
**A propos d'Inria**:
Inria est l’institut national d