Tech Lead Senior - Expert KAFKA - F/H

Contexte de la mission

Dans le cadre d'un programme stratégique de modernisation de sa plateforme de collecte et d'analyse de logs, notre client mène actuellement un projet de migration de sa stack ELK vers OpenSearch.

Cette transformation s'accompagne d'une évolution majeure de l'architecture existante avec le passage d'un modèle single-tier vers une architecture multi-tier plus résiliente, évolutive et performante.

Le projet comprend notamment :

• Le déploiement et le dimensionnement d'une nouvelle plateforme OpenSearch adaptée aux besoins actuels et futurs.
• L'évolution de la chaîne d'ingestion basée sur Kafka et Logstash.
• La migration des composants existants (index, mappings, templates, dashboards) vers OpenSearch.
• L'automatisation et l'industrialisation des déploiements via Ansible et AWX.
• L'amélioration continue des performances, de la disponibilité et de la maintenabilité de l'ensemble de la plateforme.

Afin d'accompagner cette transformation, nous recherchons un Expert OpenSearch / Kafka capable d'apporter une expertise technique forte ainsi qu'un retour d'expérience concret dans le cadre de projets similaires.

Missions

Au sein des équipes techniques, vous interviendrez sur l'ensemble du projet de migration et d'optimisation de la plateforme.

Vos principales responsabilités

• Réaliser l'audit de l'architecture existante.
• Analyser les choix techniques actuels et formuler des recommandations d'amélioration.
• Concevoir et optimiser l'architecture OpenSearch.
• Garantir les performances, la résilience et la scalabilité de la plateforme.
• Participer à la migration de l'écosystème ELK vers OpenSearch.
• Accompagner les équipes dans la transformation de l'architecture et des usages.

Expertise OpenSearch

• Administration et exploitation de clusters OpenSearch.
• Optimisation des performances et du dimensionnement.
• Gestion des index, mappings, templates et politiques de rétention.
• Contribution à l'architecture cible multi-tier.
• Résolution des problématiques de performance et de disponibilité.

Expertise Kafka

• Administration et exploitation de clusters Kafka.
• Optimisation des flux et des performances.
• Gestion de la capacité et de la montée en charge.
• Accompagnement des évolutions d'architecture.
• Analyse et résolution des incidents complexes.

Expertise Logstash

• Conception et maintien des pipelines d'ingestion.
• Optimisation des traitements et du parsing.
• Adaptation des pipelines dans un contexte OpenSearch.
• Amélioration des performances et de la robustesse des flux.

Industrialisation et accompagnement

• Automatisation des déploiements via Ansible et AWX.
• Mise en place de bonnes pratiques d'exploitation.
• Rédaction de documentation technique.
• Transfert de compétences et accompagnement des équipes internes.

Profil candidat:

Nous recherchons un consultant senior immédiatement opérationnel, capable d'évoluer de manière autonome dans un environnement technique complexe et à forts enjeux.

Compétences techniques indispensables

• Expertise confirmée sur OpenSearch :

• Architecture et administration de clusters ;
• Optimisation des performances ;
• Haute disponibilité et résilience ;
• Dimensionnement et capacity planning.

• Expertise confirmée sur Kafka :

• Administration de clusters ;
• Tuning et optimisation des performances ;
• Gestion des flux à forte volumétrie ;
• Évolution et transformation d'architectures.

• Forte maîtrise de Logstash :

• Conception et optimisation de pipelines ;
• Parsing et transformation de données ;
• Intégration avec OpenSearch.

• Expérience significative de migration ELK vers OpenSearch.
• Maîtrise d'Ansible et AWX.

Soft skills

• Capacité d'analyse et de diagnostic.
• Excellentes capacités de communication.
• Force de proposition.
• Esprit d'équipe et sens du partage de connaissances.
• Aptitude à vulgariser des sujets techniques complexes.
• Autonomie et pragmatisme.

Expérience attendue

• Minimum 5 ans d'expérience sur des environnements de collecte et d'analyse de logs à grande échelle.
• Expérience avérée sur des projets de migration ELK vers OpenSearch.
• Expérience significative dans l'administration et l'optimisation de plateformes Kafka.
• Connaissance des environnements DevOps et des pratiques d'automatisation.

Environnement technique

OpenSearch | Kafka | Logstash | ELK | Ansible | AWX | Linux | Architecture distribuée | Automatisation | Observabilité

Your role at Dynatrace
Dynatrace is seeking a results-driven Log Management Domain Specialist to serve as the primary domain authority for our Log Management solution. This is a high-impact, domain role designed to drive the successful adoption, consumption, and displacement of legacy log tools. You will partner with our Global Sales organization to demonstrate the unique value of the Dynatrace Grail™ data lakehouse, helping customers transition from high-cost, fragmented logging silos to a unified, AI-powered observability platform.

Core Responsibilities
Domain Expertise:

• Act as the domain "subject matter expert" (SME) for Logs, staying ahead of industry trends like OpenTelemetry (OTel), log pipelines (Cribl/BindPane), and cloud-native logging (CloudWatch/Stackdriver).
• Articulate the architectural superiority of Dynatrace Grail—specifically how its schema-on-read and index-less storage solve the "cardinality explosion" of modern logs.

Competitive Execution

• Partner with Account Executives/SEs to identify and execute displacement plays against legacy incumbents.
• Lead high-stakes Proof of Concepts (POCs) that drive Logs consumption that prove ROI by reducing data ingest costs while increasing troubleshooting speed.
• Build "Economic Value" models that show customers how to optimize their SaaS consumption and maximize their Dynatrace investment.

Solution Architecture

• Expertise in architecting resilient, vendor‑neutral log‑ingestion frameworks utilizing Fluentd, Logstash, and OpenTelemetry Collector pipelines, etc.
• Help customers navigate complex log-routing scenarios, ensuring high-value data is prioritized for analytics while low-value data is archived cost-effectively.

Consumption Advocacy

• Identify "consumption bottlenecks" within existing accounts and proactively provide technical guidance to unlock more log data volume and user adoption.
• Conduct "Best Practice" workshops focused on log-based alerting, DQL (Dynatrace Query Language) proficiency, and dashboarding.

What Will Help You Succeed
Qualifications & Requirements

• Experience: 5+ years in a domain, specialist, pre-sales, professional services, or SRE role, with at least 3 years specifically focused on Log Management or Big Data analytics.
• Technical Depth: Advanced proficiency in Query Languages (e.g., Splunk SPL, Kusto QL, SQL, or Lucene).
• Deep understanding of Log Ingestion pipelines and "Telemetry Pipelines" (Cribl, BindPlane, Vector).
• Hands-on experience with Kubernetes, OpenShift, and Serverless logging patterns.
• Cloud & DevOps: Strong knowledge of AWS, Azure, or GCP logging ecosystems and automation tools like Terraform or Ansible.
• Business Acumen: Ability to translate "bits and bytes" into "dollars and cents"—explaining how log management impacts MTTR and operational overhead.
• Education: Bachelor's degree in - Computer science, Engineering, or equivalent practical experience.
• Hands‑on exposure to modern observability pipelines, including Cribl solutions or OpenTelemetry logging specifications.
• Familiarity with the Cribl ecosystem or OpenTelemetry logging specs.
• Experience with scripting (Python, Go, or Bash) for log transformation and data cleanup.

Why you will love being a Dynatracer

• Dynatrace is a leader in unified observability and security.
• We provide a culture of excellence with competitive compensation packages designed to recognize and reward performance.
• Our employees work with the largest cloud providers, including AWS, Microsoft, and Google Cloud, and other leading partners worldwide to create strategic alliances.
• You'll get to work at the forefront of innovation with Dynatrace Intelligence—the industry's first agentic operations system. Bringing together deterministic and agentic AI, it helps teams understand what's happening, why it matters, and what to do next— automatically.
• Over 50% of the Fortune 100 companies are current customers of Dynatrace.

OUR STORY:
🇪🇺 Join Scaleway and shape the sovereign cloud of tomorrow !

Since 1999, we have been designing secure, sustainable infrastructures aimed at supporting the most ambitious companies.

Historically known for our dedicated servers (Dedibox), we made a strategic shift to cloud computing in 2015. Staying true to our principles of simplicity, flexibility, and technical excellence, we have become one of the leading players in Europe in the sector.

With the rise of artificial intelligence, we have strengthened our commitment, supported by the Iliad Group, which is investing €3 billion to develop a serious, sovereign AI alternative to American and Asian giants.

Every day, thanks to our fast-growing portfolio of cloud and AI products (bare metal, containerization, serverless, AI, etc.), Scaleway proudly serves thousands of customer across the private and public sector, from corporations like France Télévisions or Hachette Livre, to fast-growing startups like Photoroom and Biolevate, to institutions like the City of Copenhagen.

📍 Our offices are located in
Paris, Lille, Toulouse, Rennes, Rouen, Bordeaux and Lyon.
OUR STORY
🇪🇺 Join Scaleway and shape the sovereign cloud of tomorrow!

Since 1999, we have been designing secure, sustainable infrastructures aimed at supporting the most ambitious companies.

Historically known for our dedicated servers (Dedibox), we made a strategic shift to cloud computing in 2015. Staying true to our principles of simplicity, flexibility, and technical excellence, we have become one of the leading players in Europe in the sector.

With the rise of artificial intelligence, we have strengthened our commitment, supported by the Iliad Group, which is currently investing €3 billion to develop a serious, sovereign AI alternative to American and Asian giants.

Every day, thanks to our fast-growing portfolio of cloud and AI products (bare metal, containerization, serverless, AI, etc.), Scaleway proudly serves thousands of customer across the private and public sector, from corporations like France Télévisions or Hachette Livre, to fast-growing startups like Photoroom and Biolevate, to institutions like the City of Copenhagen.

📍Our offices are located in
Paris, Lille, Toulouse, Rennes, Rouen, Bordeaux, and Lyon.
WHY WE NEED YOU ?
Our growth is driving us to strengthen our
Non-Relational Database
team as a Software Engineer to replace a departing member and maintain our momentum on scaling our high-demand products.

Your mission will be to
ensure a robust, scalable, and high-performance experience for our customers across new sovereign regions
.

YOUR FUTURE TEAM
We work in a collaborative and international environment where the diversity of Scalers, combined with a spirit of sharing, helps bring new projects to life every day, advancing our ambitions together.

You will be part of a team of
5 people
, including a Manager, a Product Manager, and 3 Developers. This young team was born from the strategic split of the Database department to focus exclusively on non-relational databases. You will work on customer-facing products with modern stacks and no heavy legacy, participating in a strong dynamic of camaraderie and technical excellence.

YOUR DAILY ROUTINE

• Contribute to the consolidation and development of major database products in Scaleway's product ecosystem : Redis and MongoDB.
• Maintain the production to high standards of quality for performance, stability and resilience
• Deploy products to new geographical regions as part of Scaleway's global expansion
• Perform code reviews and provide constructive feedback to teammates
• Contribute to internal documentation and the development of technical best practices
• Participate in Agile rituals (two-week sprints) and team meetings
• Collaborate with cross-functional teams across Engineering, Product, and Sales

About You
HARD SKILLS:

• Strong expertise in Kubernetes administration and cluster management
• Experience with deployment tools like Helm, ArgoCD, and Flux
• Proficiency in GoLang development preferred, but otherwise demonstrated experience in a programming language
• Familiarity with Terraform for Infrastructure as Code
• Familiarity with Redis, MongoDB, or other NoSQL technologies

SOFT SKILLS:

• Strong team player with a focus on cohesion and benevolence
• Excellent communication skills and openness to feedback
• High level of professional maturity and ability to mentor junior colleagues
• Proactive mindset in problem-solving and documentation
• Comfortable working in a hybrid environment with remote teammates

WHAT YOU WILL FIND AT SCALEWAY ++++

• Hybrid work: We offer up to 3 days of remote work per week.
• Offices: Our offices are spacious, dynamic workspaces with bold design. Most of our offices feature outdoor spaces (terraces) and bike parking facilities.
• Dining: Our chef provides a healthy meal service at the headquarters, and breakfast is available across almost all of our sites year-round. Scalers working from regional sites enjoy a Swile card for lunches.
• Well-being commitments: Whether it’s access to a gym, daycare places, or discounted services for caring services, Scaleway is committed to supporting Scalers in maintaining a balanced life.
• International environment: With dozens of nationalities, Scaleway offers a stimulating environment where English is as widely spoken as French.
• Career & Mobility: Our managers value internal mobility, and opportunities to transition to other entities within the Iliad Group are accessible to all Scalers

🚀
Why join the Scaleway adventure?
✔
A rich and diverse product offering:
Scaleway offers over 100 public cloud products in IaaS, PaaS, and AI.

✔
A cutting-edge technical environment:
Scaleway provides modern infrastructures, including high-performance bare metal servers, to tackle exciting technical challenges.

✔
Commitment to responsible cloud:
Scaleway is dedicated to a more responsible cloud, with data centers powered solely by renewable energy since 2017, minimizing our ecological footprint and holding top-level certification.

🔜 THE NEXT STEPS …

• Discovery call with a recruiter to discuss your background and expectations (30 min)
• Interview with the Manager to understand your approach to the role (45 min)
• Technical interview focused on Go and Kubernetes to validate your expertise (1h)
• Interview with the Head of Tribe, Loïc Martinez Varizat, to deepen discussions and assess your fit (45 min)
• Final on-site visit to tour our offices and meet your future colleagues

At Scaleway, we are committed to building an inclusive and respectful workplace where everyone has a fair opportunity to thrive.
All applications are considered with care, regardless of age, gender, sexual orientation, ethnic or social background, religion, disability, or any other characteristic.
We believe great ideas come from everywhere, and everyone which is why you should definitely apply.

A propos de Bull
Bull c’est une histoire. Un siècle d’innovation Européenne et un environnement de travail où des experts conçoivent des solutions numériques puissantes, durables et souveraines, permettant aux États et aux industries de garder la pleine maîtrise de leurs données et de leur IA.

Bull c’est aussi des milliers d’ingénieurs, de chercheurs, de passionnés de tech, façonnant l’avenir du calcul de haute performance, de l’IA et des technologies quantiques.

Chaque jour, nos équipes repoussent les limites du possible - des architectures HPC de nouvelle génération aux supercalculateurs exascale - soutenues par une R&D de rang mondial, plus de 1 600 brevets et des capacités de bout en bout uniques, couvrant la conception matérielle, l’ingénierie logicielle, la data science et la recherche quantique.

Centrés sur l’humain et portés par l’innovation, où la collaboration s’étend à l’Europe, aux Amériques et à l’Inde, nous partageons cette même vision d’une innovation responsable et durable, avec un impact concret pour nos clients.

I - Contexte Poste Et Information Équipe (Équipe / Practice)

• Type de client : Entreprise spécialisée dans le calcul haute performance (HPC).

• Durée de la mission : CDI

• Information pratique sur l’équipe/Manager :

• Équipe composée d'une douzaine de techniciens et d'ingénieurs spécialisés en HPC.
• Organisation collaborative avec des experts en systèmes, réseaux et stockage.

II - Responsabilités / Mission

• Administration des systèmes HPC incluant les supercalculateurs et systèmes de stockage associés.
• Installation software, optimisation des configurations et maintien en conditions opérationnelles de plusieurs milliers de nœuds de calcul.
• Préparation et exécution des opérations de maintenance logicielle.
• Mise en place de solutions de haute disponibilité (HA, Pacemaker, Corosync).
• Développement de procédures d’automatisation à l'aide de scripts (bash, python).
• Rédaction de documentations techniques, des procédures d'exploitation (Wiki).
• Analyses, diagnostics et résolutions d'incidents de production.
• Qualification, résolution ou escalade vers les structures de support internes ou partenaires, des tickets client afin de répondre aux contraintes et à l'amélioration des services de production.
• Création et suivi des dossiers d’escalades techniques auprès des équipes de support L2 et/ou L3 internes ou de nos partenaires.
• Support de niveau 1 et 2 de la stack software fournie par notre client basée sur CentOS : diagnostics, mise en place des correctifs, escalade au support L3 (Client).

III – Profil Recherché

• Diplôme, formation/Certification : Diplôme Bac +5 au minimum

• Expérience : Vous justifiez d’une expérience de 5 ans minimum en administration de système Linux.

• Compétences techniques : Vous maîtrisez tout ou partie des environnements/technologies suivants :

• Administration de systèmes GNU/Linux HPC (Redhat, CentOS ou autres)
• Connaissances File System Lustre
• Réseaux : InterConnect, Infiniband, Ethernet, RoCE
• Conteneurs : Docker, OpenStack...
• Orchestrateurs : Puppet, Ansible...
• Scripting : Shell, Python, Perl
• Capacité à configurer/modifier les principaux services d'un système Linux : DNS, DHCP, WEB, FTP, authentification, gestion des déploiements
• Nagios
• Fonctionnement des matériels : switch réseaux, serveurs X86, baies de disques (DDN, ClusterStor, ...)
• Base de C, indispensable pour effectuer des analyses et des compilations de code
• Langues : Anglais courant

• Qualités requises :

• Engagement et passion
• Capacités d’analyse et de debug, ténacité dans la recherche de solutions
• Rigueur et pugnacité
• Goût pour les nouvelles technologies
• Esprit d'équipe et communiquant
• Dynamisme et autonomie
• Force de proposition

#BULL

Rejoignez notre communauté !
Ici, vos idées, votre curiosité et votre excellence technique contribuent directement à façonner la prochaine ère du calcul avancé - en créant de la valeur pour les entreprises, en accélérant le progrès scientifique et en générant un impact positif pour la société.