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Linux est un système d'exploitation open-source puissant utilisé dans divers environnements, des serveurs aux ordinateurs de bureau. Il est connu pour sa stabilité, sa sécurité et sa flexibilité, en faisant un favori parmi les développeurs et les professionnels de l'informatique.

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CDI

Offre d'emploiIT Infrastructure Support Manager

Nexus Jobs Limited
Publiée le

£75k-90k
Grand Londres, Royaume-Uni
We are currently seeking a Senior IT Support Manager. In this role, you will perform support for our employee population, analyze our current systems and assets, recommend and implement solutions and upgrades, and provide training. Our ideal candidate has extensive knowledge of network maintenance, experience managing staff, and advanced industry knowledge to keep us on the cutting edge. From day one, you'll have an immediate impact on the day-to-day efficiency of our IT operations, and an ongoing impact on our overall growth. Objectives of this Role ●Lead large IT projects, including the design and deployment of new IT systems and services ●Maintain essential IT operations, including operating systems, security tools, applications, servers, email systems, laptops, desktops, software, and hardware ●Own projects, solutions, and key responsibilities within a larger business initiative ●Handle business-critical IT tasks and systems administration ●Research and evaluate emerging technologies, hardware, and software ●Track and maintain hardware and software inventory Responsibilities for IT Manager ●Monitor performance of information technology systems to determine cost and productivity levels, and to make recommendations for improving the IT infrastructure ●Help define IT infrastructure strategy, architecture, and processes ●Analyze business requirements by partnering with key stakeholders across the organization to develop solutions for IT needs ●Assess vendors and develop test strategies for new hardware and software ●Troubleshoot hardware and software issues related to internal IT ●Supervising daily operations of network and server infrastructure ●Aligning IT infrastructure with current and future business requirements and goals ●Evaluating risk, developing network recovery and backup processes ●Assessing and purchasing new and replacement hardware ●Testing, troubleshooting and adjusting information systems to operate effectively ●Implementing security of the network, data and its storage and communication systems ●Ensure network components meet business needs and work together seamlessly, using the full range of capabilities, and stay informed about new features and competitive solutions ●Train employees on both software and hardware, troubleshoot, and provide technical support when needed ●Develop and execute disaster procedures, and maintain data backups ●Manage information technology and computer systems ●Identify problematic areas and implement strategic solutions in time ●Preserve assets, information security and control structures ●Proven working experience as an IT Manager or relevant experience ●Excellent knowledge of technical management, information analysis and of computer hardware/software systems ●Expertise in data center management and data governance ●Hands-on experience with computer networks, network administration and network installation Qualifications for IT Manager ●Bachelor's degree in Information Technology, Computer Science, Information Systems, or a related field, or equivalent experience ●5-7 years experience in IT management ●Experience leading and managing large IT projects and rolling out IT infrastructures across various technologies ●Excellent working knowledge of computer systems, security, network and systems administration, databases and data storage systems, and phone systems ●Strong critical thinking and decision-making skills ●Excellent project management skills and strong ability to prioritize ●Firm grasp on IT infrastructure and operations best practices ●Experience across different software solutions, including: desktop operating systems (MS Windows, MacOS), server operating systems (MS Windows, Linux), cloud-based technologies (Google Workspaces, AWS, SD-WAN), SaaS solutions (Okta, Dynamics365, Microsoft365), mobile (iOS, Android), backup and recovery procedures, and system performance monitoring. ●Experience across different hardware solutions, including: Cisco Switches/Routers, Meraki/Palo Alto Firewalls, Meraki Wireless Access Points; Cisco Unified Communications. ●Expertise with implementing, configuring, and testing solutions ●Proven leadership skills ●Strong creative and analytical thinking ●Professional certifications preferred (i.e. A+, Network+, CCNA, MCP)
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Freelance
CDI

Offre d'emploiTECH LEAD PYTHON / ANGULAR Sur BORDEAUX

EterniTech
Publiée le
Angular
API REST
Python

3 mois
Bordeaux, Nouvelle-Aquitaine
CONTEXTEDans le cadre du renforcement de l'équipe technique, nous recherchons un Tech Lead Full Stack Python / Angular pour accompagner la conception, le développement et l'évolution d'applications métiers dans un environnement technique moderne et exigeant. Le consultant interviendra sur les volets architecture, conception, développement et accompagnement technique des équipes. MISSIONSDéfinir et faire évoluer l'architecture technique des applications. Concevoir et développer les applications Back-end en Python et Front-end en Angular. Concevoir et intégrer des API REST et des services. Accompagner et challenger techniquement les développeurs. Réaliser les revues de code et garantir le respect des standards de développement. Veiller à la qualité, performance, sécurité et maintenabilité du code. Identifier les problématiques techniques et proposer des solutions adaptées. Participer aux choix technologiques et à l'amélioration continue de la stack. Accompagner les équipes dans la mise en place des bonnes pratiques Agile, Git, CI/CD et DevOps. Participer aux différentes phases : conception, développement, tests, déploiement et maintenance. Assurer une veille technologique sur les écosystèmes Python et Angular. ENVIRONNEMENT TECHNIQUEBack-endPython FastAPI / Django API REST Microservices Front-endAngular TypeScript JavaScript HTML / CSS DevOps / InfrastructureGit / GitLab CI/CD Docker Kubernetes Linux Cloud
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Freelance

Mission freelanceDV L3 Network Engineer

LA International Computer Consultants Ltd
Publiée le

6 mois
£550-570
Bristol, Royaume-Uni
Network Engineer Location : Corsham Clearance : DV cleared. Duration : 3 months initial. We are looking for a L3 Network Engineer (CISCO) to provide network engineering support of the LAN and WAN across all security domains. Your role will involve incident management and change implementation on our clients' live system, on incidents that have been escalated from 1/2nd line resources that are often remotely based environments. Skills: * Installation, configuration, deployment, maintenance and diagnostics of all Network Devices and supporting cabling and infrastructure eg Router, switch and firewall IOS and firmware upgrades * Level 3 Support for the LANs and WANs relating to Core Services * Network support, advice and recommendations to design change * Updating Design Documentation to capture Network Changes * ASA and Firepower firewall experience. * Experience of multi-security tier and multi-tenant environments. * Knowledge of VMWare NSX Firewall & SDWAN. * NGNIX * LINUX Due to the nature and urgency of this post, candidates holding or who have held high level security clearance in the past are most welcome to apply. Please note successful applicants will be required to be security cleared prior to appointment which can take a minimum 18 weeks. LA International is an award-winning partner of choice for many of the world's most influential companies and government organisations. Holding Enhanced Government Security Accreditation, we are recognised as the European market leader in the delivery of Security Cleared talent to organisations that demand the very highest levels of security, compliance and assurance. An award-winning organisation, having secured the prestigious Queens Award for Enterprise: International Trade over multiple years. We are committed to fostering an inclusive, equitable and accessible workplace where everyone feels valued and supported. We welcome applications from all individuals, regardless of background or identity, and we encourage candidates who may not meet every listed requirement to still apply. If you require any adjustments or support during the recruitment process, please let us know and we will work with you to ensure a fair and accessible experience. Please Note: If a high volume of applications is received, only candidates shortlisted will be contacted.
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Freelance

Mission freelanceArchitecte / Expert Dynatrace pour une mission sur Orleans / Blois avec un démarrage asap/su

WorldWide People
Publiée le
Dynatrace

6 mois
400-520 €
Orléans, Centre-Val de Loire
Architecte / Expert Dynatrace pour une mission sur Orleans / Blois avec un démarrage asap. Contexte de la mission Dans le cadre du renforcement d'une démarche stratégique d'Observabilité IT et SRE, l'équipe en charge de l'Observabilité recherche un expert Dynatrace & SRE afin d'accompagner la mise en œuvre, l'industrialisation et l'évolution des pratiques d'observabilité. L'intervention couvrira les environnements Production et Hors Production, avec un fort enjeu autour de l'analyse de bout en bout, du suivi de la performance, de la fiabilité des services et de la mise en œuvre des pratiques SRE. Description de la mission Le consultant interviendra notamment sur les activités suivantes : Réaliser des analyses et formuler des préconisations en Production et Hors Production à l'aide de Dynatrace, sur les flux TP et batch. Assurer le suivi et l'analyse de la production via Dynatrace. Intervenir en tant que référent technique et Lead lors de situations de type Task Force. Concevoir et animer des workshops et sessions de formation autour de Dynatrace. Accompagner la montée en compétence des équipes sur Dynatrace Managed, Grail et leur infrastructure. Contribuer aux projets de migration de Dynatrace Managed vers Grail ou vers une solution d'observabilité alternative. Mettre en œuvre les principes et pratiques SRE : SLO, indicateurs de fiabilité, automatisation, etc. Concevoir des tableaux de bord métier et IT de bout en bout. Assurer un support technique de niveau N2/N3 sur Dynatrace. Contribuer à l'analyse de l'expérience utilisateur (UX) et à l'identification des axes d'amélioration. Livrables attendus Rapports d'analyse à la demande sur les environnements Production et Hors Production. Tableaux de bord métier et IT dans Dynatrace. Définition et mise en œuvre de SLO sur les KPI métier et IT. Comptes rendus de réunions et d'ateliers. Supports de formation et de workshops. Suivi de l'activité et des actions dans Jira. Documentation technique et fonctionnelle interne. Compétences requises Le consultant devra disposer d'une solide expertise en observabilité, Dynatrace et SRE, notamment : Expertise dans l'analyse de bout en bout avec Dynatrace Managed et Grail. Maîtrise de Dynatrace Managed et Grail ; une certification Dynatrace est attendue. Maîtrise des concepts et pratiques SRE. Bonne connaissance de l'architecture Dynatrace Managed / Grail. Maîtrise des trois piliers de l'observabilité : Logs, Traces et Métriques. Solides connaissances des architectures N-tiers et des environnements Cloud. Connaissance des environnements AWS, Azure, VMware, Kubernetes et Docker. Maîtrise des environnements Windows / Linux / Citrix. Bonne connaissance des réseaux d'entreprise. Maîtrise des outils collaboratifs Microsoft 365 et Teams. Bonne maîtrise des outils et usages de l'IA appliquée aux activités IT. Capacité à analyser les performances et l'expérience utilisateur (UX). Une connaissance de Datadog, Splunk, ELK et Zabbix serait appréciée. Une connaissance des architectures MCP serait un plus. Compétences clés Obligatoires Dynatrace Managed Analyse de bout en bout avec Dynatrace SRE Microsoft Teams Importantes Dynatrace Grail Architecture Dynatrace Managed / Grail Datadog / Splunk / ELK / Zabbix Architecture des réseaux d'entreprise Architectures Cloud : AWS, Azure Virtualisation : VMware Conteneurisation et orchestration : Kubernetes, Docker, TKGS, EKS Développement Architecture MCP Utilisation de l'IA Analyse UX
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CDI

Offre d'emploiSenior IT Infrastructure & Systems Manager

Nexus Jobs Limited
Publiée le

£55k-60k
Grand Londres, Royaume-Uni
Senior IT Infrastructure & Systems Manager We are seeking an experienced and highly motivated Senior IT Infrastructure Manager with at least 7 to 10 years experience to oversee, manage, and continuously improve the organization's IT infrastructure, enterprise systems, network environment, and end-user computing services. The successful candidate will ensure the availability, security, performance, and resilience of critical business systems while leading technical teams and supporting key stakeholders across the organization. This role requires a strong blend of technical expertise, leadership capability, operational excellence, and stakeholder management skills, within a complex enterprise environment that includes financial, trading, and treasury systems. Infrastructure & Systems Management Administer, maintain, and optimize Windows and Linux server environments. Manage VMware virtualized infrastructure (vSphere 8 and above). Oversee enterprise backup and disaster recovery solutions using Veeam Backup & Replication. Manage Veeam ONE monitoring and Veeam Recovery Orchestrator (VRO) environments. Administer endpoint security and encryption solutions, including Symantec Endpoint Protection (SEP) and Symantec Endpoint Encryption (SEE). Support endpoint DLP, SIEM, and security monitoring tools (e.g., Splunk, Tenable). Manage patching processes using ManageEngine Patch Manager Plus. Support Microsoft 365 services and related cloud technologies. In depth understanding of Cyber security Monitor system performance, capacity, availability, and infrastructure health. Ensure compliance with IT governance, security policies, and operational standards. End-User Computing Support Provide advanced desktop, laptop, printer, Mobile device (iOS) and branch office IT support. Deliver AV support for meeting rooms, conferencing, presentations, and collaboration systems. Manage OS deployment, imaging, image creation, maintenance, and software packaging. Administer Active Directory (AD), Group Policy Objects (GPOs) and user provisioning and NTFS permissions. Support Microsoft 365 applications including Outlook, Teams, OneDrive, and SharePoint. Resolve technical incidents and service requests in line with agreed SLAs. Enterprise Applications & Financial Systems Support Support and administer business-critical applications, including: Bloomberg FXT and Refinitiv Eikon, Murex Treasury System, SWIFT Alliance Access (SAA), 1AML, SIBS, GFMS, COP Support enterprise file synchronization and replication solutions (e.g., Syncovery, other SFTP). Networking Configure and support Cisco switches and routers. Administer FortiGate firewall environments. Strong network fundamentals: DNS, DHCP, TCP/IP, LAN/WAN, Routing and connectivity troubleshooting. Monitor network performance, availability, and security posture. Security & Endpoint Management Support vulnerability management using tools such as Tenable. Manage security monitoring and log analysis tools (e.g., Splunk). Perform SSL/TLS certificate lifecycle management using OpenSSL. Create and manage CSRs, certificate chains, and private keys. Ensure adherence to cybersecurity policies, standards, and regulatory requirements. Support physical access control systems (e.g., Paxton) Governance, Documentation & Process Improvement Develop, maintain, and enforce IT policies, standards, and operational procedures. Produce system architecture diagrams, technical documentation, SOP's, and performance reports. Identify and drive opportunities for automation and service improvement. Support technology planning, infrastructure modernization, and transformation initiatives. Operating Systems Windows 11 Windows Server 2019/2022 (or equivalent enterprise environments) Red Hat Linux Infrastructure & Virtualization VMware vSphere / vCenter (v8.0.3 and above) Veeam Backup & Replication Veeam ONE, VRO Microsoft Office 365 ManageEngine Patch Manager Plus SAAS solutions SQL Server Security Symantec Endpoint Protection (SEP) Symantec Endpoint Encryption (SEE) SentinelOne – EDR/ XDR Endpoint DLP solutions Firewall administration Vulnerability management tools (e.g., Tenable) SIEM tools (e.g., Splunk) Networking Cisco Switches and Routers FortiGate Firewalls LAN/WAN networking and routing Hardware & Storage Dell PowerEdge Servers Dell PowerVault SAN Storage Technical Competencies Data analysis and operational reporting Desktop and laptop support Infrastructure monitoring and performance management Certificate lifecycle management (SSL/TLS) Windows imaging and deployment, GPO, NTFS PowerShell scripting SQL Server administration Understanding of software development lifecycle (SDLC) and deployment processes Architecture review and systems optimization Asset management 7+ years of experience in enterprise IT infrastructure and systems administration. Experience within financial services, banking, trading, or treasury environments. Proven experience managing mission-critical infrastructure and applications. Experience operating within regulated and security-focused environments. Able to provide support to VIP stakeholders This is a hybrid role 3 days in the office in Central London. Salary for this role will be in the range £55K - £60K. Do send your CV to us in Word format along with your salary and availability.
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Les métiers et les missions en freelance pour Linux

Administrateur Système

L'Administrateur système utilise Linux pour gérer les serveurs, sécuriser les systèmes et déployer des services essentiels.

Ingénieur·e devops (Cloud)

L'Ingénieur.e DevOps utilise Linux pour automatiser les workflows et optimiser l'infrastructure cloud.

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