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Lenstra

Lenstra

www.lenstra.co

6 Jobs

40 Employees

About the Company

Lenstra is a consultancy that specialises in Tech. Our mission is to help our clients improve their operational performance by creating the Tech Solutions they miss.

Our consultants speak both the language of Business and that of Tech. They work with our clients to help them define their issues, then create and/or assemble the technological building blocks that meet their needs. Their approach encompasses business strategy, user needs, and technical constraints.

Our people are engaging to work with and trusted by clients. We get the job done.

Reach us now to explore how we might help your company!

Listed Jobs

Company background Company brand
Company Name
Lenstra
Job Title
Service Owner
Job Description
**Job Title** Service Owner – AI Solutions **Role Summary** Own end‑to‑end service management for AI applications in production, ensuring reliable operations, incident response, scheduled maintenance, and SLA compliance across the AI portfolio. Act as primary liaison for users and stakeholders, driving communication and performance monitoring within the data and AI teams. **Expectations** - Deliver operational stability and continuous service improvement for AI solutions. - Meet or exceed defined SLAs and service commitments. - Provide clear communication on maintenance windows, incidents, and updates to stakeholders. - Foster collaboration between data, AI, and service management functions. **Key Responsibilities** - Design, implement, and maintain service governance for AI solutions. - Manage incident and problem lifecycle, coordinating resolution and post‑mortem analysis. - Plan and coordinate scheduled maintenance, ensuring minimal business impact. - Monitor service performance, generate dashboards, and report KPI trends. - Conduct regular service reviews and recommend improvements. - Serve as escalation point for critical incidents affecting AI services. - Collaborate with cross‑functional teams (DevOps, Data Engineering, AI R&D) to align service delivery. **Required Skills** - Service Management expertise (ITIL foundation or equivalent). - Minimum 4–5 years of experience in service ownership or similar role. - Proven experience managing AI or machine learning production environments. - Strong incident and problem‑management capabilities. - Analytical mindset with proficiency in metrics tracking and reporting. - Excellent communication and stakeholder‑management skills. - Fluency in French and English. **Required Education & Certifications** - Bachelor’s degree in Computer Science, Engineering, or related field. - ITIL Foundation or higher (preferred). - AI/ML domain knowledge; certifications in data science or ML engineering are a plus.
Paris, France
Hybrid
15-12-2025
Company background Company brand
Company Name
Lenstra
Job Title
Sr. Linux System Engineer
Job Description
**Job Title:** Sr. Linux System Engineer **Role Summary:** Lead the design, deployment, and automation of large‑scale physical and virtual Linux infrastructures across multiple global data centers. Provide advanced support for development teams, manage enterprise storage, virtualization, and high‑performance computing clusters, and drive infrastructure‑as‑code initiatives. **Expactations:** - Operate and maintain several thousand Linux servers in a multi‑regional environment. - Deliver reliable, automated provisioning and configuration using IaC tools. - Collaborate with cross‑functional teams to support development tooling and performance monitoring. - Uphold best practices for security, scalability, and documentation. **Key Responsibilities:** - Deploy and manage Linux servers (physical & virtual) across Europe, Asia, and the Americas. - Administer a large VMware vSphere environment and related networking/storage components. - Configure and maintain enterprise NAS/SAN storage solutions (Dell, EMC, PureStorage, etc.). - Operate high‑performance computing clusters (Slurm) for compute‑intensive workloads. - Automate infrastructure using Puppet or Ansible, and develop scripts in Python/Bash. - Implement containerization (Docker) and version control (Git) workflows. - Monitor systems with Nagios, Grafana, and other observability tools; troubleshoot incidents. - Document architectures, processes, and runbooks; mentor junior engineers. **Required Skills:** - Deep expertise in Linux system administration (RHEL/CentOS, Ubuntu, etc.). - Strong Infrastructure‑as‑Code proficiency with Puppet or Ansible. - Advanced scripting/programming in Python and Bash. - Extensive experience with VMware vSphere virtualization. - Solid knowledge of enterprise NAS/SAN storage technologies. - Proficiency with Git, Docker, and container orchestration basics. - Familiarity with monitoring tools (Nagios, Grafana) and HPC workload managers (Slurm). - Excellent problem‑solving, communication, and teamwork abilities. **Required Education & Certifications:** - Bachelor’s degree in Computer Science, Information Technology, Engineering, or related field (or equivalent professional experience). - Relevant certifications are a plus (e.g., Red Hat Certified Engineer, VMware VCP, Certified Kubernetes Administrator).
Paris, France
Hybrid
17-12-2025
Company background Company brand
Company Name
Lenstra
Job Title
Consultant Audit Cybersécurité
Job Description
**Job Title:** Consultant Audit Cybersecurity **Role Summary:** Lead the design, implementation, and continuous improvement of a cybersecurity audit service offering. Coordinate with internal teams and external audit firms to deliver high‑quality, regulatory‑compliant audit engagements, produce supporting documentation, and enhance service capabilities. **Expectations:** Deliver timely, accurate audit deliverables that meet defined quality standards. Ensure effective stakeholder communication, maintain client confidence, and drive service evolution based on feedback and performance metrics. **Key Responsibilities:** 1. Conceive, structure, and document the cybersecurity audit service offering, including value proposition, scope, methodology, templates, and pricing. 2. Execute RFI/RFP processes with external audit partners and define SLAs, KPIs, and performance measurement frameworks. 3. Lead cross‑functional committees and workshops to present service concepts, progress, and results to senior leadership. 4. Plan and oversee audit engagements – define scope, objectives, resources, schedule, and roles for internal and external teams. 5. Monitor audit progress, conduct quality reviews, and ensure deliverable compliance with industry standards and contractual requirements. 6. Provide on‑site mentorship to external audit teams, facilitating knowledge transfer and skill enhancement in cyber audit practices. 7. Generate communication and reporting materials for management, including executive summaries and performance dashboards. **Required Skills:** - Deep knowledge of cyber risk management, audit methodologies, and regulatory frameworks (ISO 27001, ISO 27005, NIST, EBIOS). - Experience in conducting cybersecurity risk assessments and penetration tests. - Proficiency with security tools: SIEM, vulnerability management, log analysis, firewall, routers, switches, IAPs. - Strong understanding of database systems (SQL Server, Oracle), operating platforms (Windows, UNIX), client‑server and web architectures. - Excellent written communication (Word, PowerPoint) and presentation skills. - Fluency in French and English. - Analytical mindset, critical thinking, and rigorous audit discipline. **Required Education & Certifications:** - Bachelor’s or Master’s degree in Computer Science, Information Security, or related field. - Professional certifications highly valued: ISO 27001 Lead Auditor, CISA, CISM, CISSP, or equivalent.
Paris, France
Hybrid
14-01-2026
Company background Company brand
Company Name
Lenstra
Job Title
Consultant informatique F/H
Job Description
**Job title** Cloud Engineering Consultant **Role Summary** Design, deploy, and manage cloud infrastructure on AWS and GCP for diverse client projects. Provide technical guidance, migration strategies, and continuous optimization while ensuring security, performance, and cost efficiency. **Expectations** • Deliver end‑to‑end cloud solutions in a dynamic, multidisciplinary environment. • Program primarily in Python and Golang, applying DevOps practices and IaC. • Support production workloads and maintain high service availability. **Key Responsibilities** - Design, implement, and maintain AWS and GCP infrastructure using Terraform & IaC. - Collaborate with clients to translate business requirements into robust cloud architectures. - Lead cloud migration initiatives, develop migration plans, and execute roll‑outs. - Monitor, analyze, and optimize cloud performance, security, and cost. - Provide technical support, troubleshooting, and incident resolution. - Create and maintain architecture documentation, processes, and best‑practice guides. - Stay current on cloud technologies and share knowledge with the team. **Required Skills** - Strong Python programming; proficiency in Golang is a plus. - Deep experience with AWS (EC2, ECS, EKS, S3, RDS, IAM, CloudFormation/Terraform) or GCP (Compute Engine, Kubernetes Engine, Cloud Storage, BigQuery, IAM). - Expertise in SQL, experience with dbt/Dataform and ELT pipelines. - Proven knowledge of infrastructure‑as‑code and CI/CD pipelines (Git, GitHub Actions, CircleCI, etc.). - Familiarity with containerization (Docker) and orchestration (Kubernetes). - Solid data engineering background: data modeling, warehouse concepts, and visualization tools (Tableau, Power BI). - Excellent analytical, problem‑solving, and client‑focused communication skills in English and French. **Required Education & Certifications** - Bachelor’s (Bac+3) to Master’s degree in Computer Science, Engineering, Mathematics, Statistics, or related field. - Relevant cloud certifications preferred (AWS Certified Solutions Architect, Google Cloud Professional Cloud Architect) and continuous professional development programs (HashiCorp, DevOps).
Paris, France
Hybrid
20-01-2026