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Lenstra

Lenstra

www.lenstra.co

4 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
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
Sr. Data Platform Engineer
Job Description
Job Title: Sr. Data Platform Engineer Role Summary: Senior technical role focused on building scalable data platforms, mentoring data teams, and bridging operational/business needs. Responsibilities span cloud data workflows, governance, and cross-functional collaboration to ensure high-performance, compliant data solutions aligned with enterprise standards. Expactations: - Provide hands-on technical leadership for data workflows, including troubleshooting and performance optimization. - Mentor and upskill data engineers through best practice coaching and knowledge sharing. - Act as a technical bridge between business units and central data teams to translate requirements into actionable platform features. - Drive compliance with governance frameworks and ensure adherence to security standards. - Collaborate on automation initiatives for CI/CD processes and data mesh implementation. Key Responsibilities: - Troubleshoot and resolve complex technical issues in data workflows. - Design and implement scalable, reliable data platform features following inner-source methodologies. - Develop shared data tools, pipelines, and assets across organizational domains. - Translate business requirements into technical specifications for data platform enhancements. - Monitor and enforce data governance, compliance, and security protocols. - Refine CI/CD pipelines and operational procedures for enhanced delivery efficiency. - Advise on data mesh framework adoption to improve domain-specific data management. Required Skills: - Expertise in Google Cloud Platform (BigQuery, Vertex AI, Cloud Run, Cloud Storage). - Strong proficiency in dbt for data modeling and deployment. - Experience with GitHub Actions for CI/CD automation. - Familiarity with Apache Airflow/Cloud Composer and Kubeflow for ML orchestration. - Knowledge of data mesh architectures and federated governance models. - Proven experience in large-scale enterprise or luxury/retail industry settings. Required Education & Certifications: Not specified in the provided job description.
Paris, France
Hybrid
09-02-2026
Company background Company brand
Company Name
Lenstra
Job Title
Sr. Data Architect Consultant
Job Description
**Job Title:** Sr. Data Architect Consultant **Role Summary:** Lead the design, development, and implementation of self‑service data platforms for large enterprise clients, aligning technical solutions with strategic, security, and legal requirements while promoting platform adoption across internal teams. **Expectations:** - Champion data platform usage within client organizations. - Deliver new platform features using modern tooling (GitHub Actions, dbt, Terraform, etc.). - Provide technical guidance and mentorship to engineering and analytics teams. **Key Responsibilities:** - Define and evolve the data platform vision and architecture. - Design and build data ingestion, ELT pipelines, data models, and warehousing solutions. - Integrate the platform with clients’ IT, security, and compliance frameworks. - Create and maintain infrastructure as code (Terraform) and CI/CD pipelines (GitHub Actions). - Conduct code reviews, performance tuning, and best‑practice enforcement for SQL and Python. - Produce documentation and training materials to enable self‑service analytics. - Collaborate with cross‑functional stakeholders (data engineers, analysts, security, legal). **Required Skills:** - Strong expertise in SQL and data modelling. - Hands‑on experience with dbt or Dataform. - Proficiency in Python programming. - Experience designing enterprise data architecture and ELT processes. - Familiarity with data‑visualisation tools (Tableau, Power BI, or equivalents). - Knowledge of infrastructure‑as‑code (Terraform) and CI/CD (GitHub Actions). - Excellent analytical, problem‑solving, and communication abilities. - Ability to manage multiple priorities in ambiguous environments. - Fluency in English and French (both written and spoken). **Required Education & Certifications:** - Bachelor’s or Master’s degree in Computer Science, Engineering, Mathematics, Statistics, or a related discipline. - Minimum 4 years of professional experience in data engineering, analytics engineering, or comparable roles.
Paris, France
Hybrid
Junior
17-02-2026
Company background Company brand
Company Name
Lenstra
Job Title
Security Operations Center Expert
Job Description
Job Title: Security Operations Center Expert Role Summary: Lead incident response, detection engineering, and SOAR automation for a global client portfolio, aiming to reduce MTTD/MTTR and strengthen overall security posture through continuous process improvement and tooling optimization. Expectations: - Resolve security incidents within defined SLAs. - Enhance detection coverage and reduce false positives. - Deliver automated playbooks to lower response time and man‑hours. - Collaborate with infrastructure and operations to improve KPI metrics. - Maintain thorough documentation for all incidents and detections. Key Responsibilities: - **Incident Response & Case Management**: triage, containment, eradication, recovery, escalation, and ticketing documentation. - **Detection Engineering**: design and tune SIEM rules, integrate log sources, map to MITRE ATT&CK, and build dashboards. - **SOAR & Automation**: design, build, and maintain playbooks (e.g., endpoint isolation, IP blocking, account disabling) and integrate security tools. - **SOC Tooling & Platform Operations**: update, health‑check, and optimize SIEM, SOAR, and related platforms. Required Skills: - 5+ years SOC experience in high‑volume, SLA‑driven settings. - Expertise in SIEM rule creation, tuning, dashboards, and SOAR playbook development. - Detection engineering, log analysis, and false‑positive reduction. - AWS experience; Azure a plus. - MITRE ATT&CK mapping. - Scripting: Python, Bash, PowerShell. - Networking protocols: TCP/IP, DNS, HTTP/S, SSL/TLS, firewalls. - Linux and Windows proficiency. - CI/CD and Git‑based workflow familiarity. - Fluent in English and French. Required Education & Certifications: - Bachelor’s degree in Computer Science, Cybersecurity, or related field. - Preferred certifications: CISSP, GCIA, GCIH, CEH, SIEM/SOAR certifications.
Paris, France
Hybrid
Mid level
26-02-2026