We are looking for an experienced Sr Network Engineer to support and strengthen a hybrid enterprise infrastructure in Concord, California. This role focuses on designing, optimizing, and securing network environments that enable dependable connectivity, protected data exchange, and stable day-to-day operations. The ideal candidate brings strong technical depth across cloud and on-premises platforms, a practical troubleshooting mindset, and the ability to communicate effectively with both technical and non-technical stakeholders.<br><br>Responsibilities:<br>• Design, maintain, and enhance network infrastructure across routing, switching, wireless connectivity, firewall platforms, VPN services, and hybrid Azure-integrated environments.<br>• Develop and uphold network architecture standards, technical documentation, and long-term infrastructure plans that improve performance, segmentation, and security.<br>• Administer and support a hybrid Microsoft ecosystem, including cloud and on-premises services, to ensure reliable access and operational continuity.<br>• Manage the Hyper-V environment and related infrastructure components to maintain availability, scalability, and system efficiency.<br>• Investigate and resolve complex network and connectivity issues, serving as an escalation point for advanced incidents and selected help desk matters.<br>• Oversee backup operations for critical systems and verify that recovery processes align with business continuity needs.<br>• Partner with IT leadership and security stakeholders to implement preventive safeguards and contribute to incident response efforts.<br>• Provide technical guidance to end users and entry-level team members while promoting strong service standards and timely issue resolution.<br>• Monitor industry developments, evaluate emerging technologies, and recommend improvements that strengthen the overall network environment.<br>• Travel occasionally to support offices or operational needs as required.
<p>A growing private aviation services organization is seeking a Senior Systems / Infrastructure Engineer to support and secure its enterprise infrastructure, cloud platforms, and business-critical systems. This is a hands-on role responsible for administering Microsoft technologies, Azure cloud environments, virtualization platforms, networking, and security tools while driving infrastructure modernization and operational excellence.</p><p>What You'll Own</p><p>Microsoft 365, Azure administration and migrations, Active Directory, Entra ID, VMware/Hyper-V, infrastructure modernization, security tools, and identity management. Networking experience is important but serves as a supporting component of the role rather than the primary focus.</p><p>Role Focus</p><p>This position is primarily centered on systems administration and infrastructure engineering, with significant responsibility for Azure administration, cloud implementations, migrations, and hybrid environments. You'll work across Microsoft technologies, virtualization, identity management, and security platforms while helping drive modernization initiatives throughout the organization. Security operations and network administration are important aspects of the role, but deep network architecture is not the primary focus.</p><p>Key Responsibilities</p><p>Infrastructure & Cloud Administration</p><ul><li>Administer and support Microsoft 365, Entra ID (Azure AD), Active Directory, Windows Server, Group Policy, and hybrid cloud environments.</li><li>Lead and support Azure administration, implementation, migration, and optimization projects.</li><li>Design, deploy, and maintain Azure cloud services, hybrid identity solutions, and cloud-based infrastructure.</li><li>Manage VMware and Hyper-V environments, enterprise servers, storage, backups, and core infrastructure.</li><li>Implement patching, monitoring, system hardening, and infrastructure best practices.</li></ul><p>Network Administration</p><ul><li>Manage and troubleshoot enterprise LAN/WAN environments.</li><li>Support switches, routers, firewalls, VPNs, wireless infrastructure, and network segmentation.</li><li>Ensure high availability, performance, and reliability across on-premises and cloud environments.</li></ul><p>Security & Identity Management</p><ul><li>Administer Okta, MFA, identity governance, privileged access, and user lifecycle management.</li><li>Support SIEM, EDR, vulnerability management, endpoint security, IDS/IPS, and security monitoring platforms.</li><li>Perform vulnerability remediation, risk reduction, and security hardening initiatives.</li><li>Implement Zero Trust security principles and secure access controls.</li></ul><p>Incident Response & Compliance</p><ul><li>Participate in security incident response, investigation, root cause analysis, and remediation efforts.</li><li>Support compliance initiatives related to NIST, CIS, SOC 2, GDPR, and CCPA.</li><li>Maintain technical documentation, infrastructure diagrams, runbooks, and operational procedures.</li></ul>
We are looking for an experienced Security Network Engineer to support and strengthen a data center environment in California. This long-term contract opportunity is ideal for a senior specialist who brings deep expertise in secure network operations, infrastructure monitoring, and enterprise firewall administration. The role focuses on maintaining a reliable, high-performing network across a smaller infrastructure footprint while partnering with teams that operate during Pacific Time hours.<br><br>Responsibilities:<br>• Manage and optimize secure network infrastructure across data center switching, routing, and firewall platforms.<br>• Administer firewall environments and centralized policy management tools to maintain strong security controls and network availability.<br>• Monitor network performance and security events, identify issues proactively, and drive timely resolution of incidents.<br>• Support day-to-day operations for a compact but critical infrastructure environment with a focus on stability and efficiency.<br>• Implement configuration changes, upgrades, and troubleshooting activities across core networking components.<br>• Use network monitoring platforms such as SolarWinds to track health, capacity, and performance trends.<br>• Contribute technical expertise on Cisco-based environments, including Nexus platforms where applicable.<br>• Collaborate with internal stakeholders and remote teams to ensure dependable support coverage during Pacific Time business hours.
<p>obert Half is seeking a Software Engineer II – AI Engineer to analyze, design, program, debug, test, implement, and support the privacy, security, and governance controls that protect generative AI technologies. This role safeguards GenAI-enabled applications, including LLM-powered workflows, RAG pipelines, plugins, skills, and autonomous agents, by embedding data protection, security guardrails, and responsible AI governance across the development lifecycle. </p><p> </p><p>This role supports SDLC documentation across all phases, with a focus on data privacy, security guardrails, governance, compliance, and risk management. It also works with users to define requirements and support applications in production. </p><p><strong>What You’ll Do</strong> </p><ul><li>Design and implement data privacy controls, including PII/PHI detection, redaction, and data minimization. </li><li>Build security guardrails, including prompt-injection defense, jailbreak prevention, and output filtering. </li><li>Establish governance for plugins, skills, and agents, including registration, approval, and lifecycle management. </li><li>Review and vet third-party plugins, skills, and agent tools for security, privacy, and compliance risks. </li><li>Define and enforce access controls, authentication, and least-privilege permissions for AI components. </li><li>Implement guardrails for autonomous agents, including action scoping, tool-use restrictions, and human-in-the-loop approval. </li><li>Apply data classification, retention, and residency policies across GenAI data flows. </li><li>Monitor AI systems for policy violations, data leakage, and anomalous plugin, skill, or agent behavior. </li><li>Maintain audit trails and logging for plugin, skill, and agent activity. </li><li>Support compliance with regulations and frameworks, including GDPR, CCPA, and the EU AI Act. </li><li>Provide Level II production support for security, privacy, and governance incidents. </li><li>Support incident response, including containment, escalation, and remediation. </li></ul>
<p>Robert Half is seeking a Software Engineer II – AI Engineer who will analyze, design, program, debug, test, implement, deploy, and support software enhancements and new applications using Generative AI technologies. This role contributes to the development and production deployment of GenAI-enabled applications, including LLM-powered workflows, RAG pipelines, and AI-driven user experiences. </p><p> </p><p>This role supports SDLC documentation across all phases, with a focus on deployment, evaluation, observability, safety, and monitoring. It also interacts with users to define requirements and support applications in production. </p><p><strong>What You’ll Do</strong> </p><ul><li>Develop and modify application modules, including GenAI components. </li><li>Build prompt workflows, retrieval layers, APIs, and cloud services. </li><li>Troubleshoot production issues, including latency, hallucinations, and errors. </li><li>Provide Level II production support for deployed systems. </li><li>Design components, including LLM integrations and RAG pipelines. </li><li>Implement CI/CD pipelines, containerization, and release processes. </li><li>Develop RAG pipelines with embeddings, chunking, and vector search. </li><li>Apply prompt engineering techniques, including few-shot prompting and structured outputs. </li><li>Evaluate models for accuracy, relevance, and hallucination risk. </li><li>Implement safety guardrails, including PII protection and prompt-injection defense. </li><li>Execute testing, including unit, integration, and GenAI evaluation testing. </li><li>Monitor production systems for latency, cost, usage, and errors. </li><li>Support incident management with fallback and recovery strategies. </li></ul><p><br></p>