Principal Cybersecurity Architect - Lab & Customer Infrastructure

EXOS (formerly Sondhi Solutions)

  • Saint Louis, MO
  • 20 days ago

    Highlights

    Architect secure connectivity options for customers accessing lab environments remotely: ZTNA, IPSec/SSL VPN, MPLS/dedicated circuit - selecting appropriate models based on customer security requirements and sensitivity of the work. Our client's Information Security group is looking for a Security Architect to design and govern security across our customer-facing lab environments - the infrastructure we provision for customers to connect into, test configurations, stage equipment, and prepare for datacenter deployments.

    Numbers & Facts

    LocationSaint Louis, MO

    Description


    Role Summary

    Our client's Information Security group is looking for a Security Architect to design and govern security across our customer-facing lab environments - the infrastructure we provision for customers to connect into, test configurations, stage equipment, and prepare for datacenter deployments. This is a hands-on architecture role at the intersection of network security, infrastructure engineering, and customer-facing operations.

    Context

    Our lab environments serve multiple simultaneous customers, each connecting into dedicated segments to test infrastructure configurations, evaluate solutions, or stage physical and virtual equipment before it ships to their datacenters. This creates a unique security challenge: strict multi-tenant isolation, controlled external access, supply chain integrity for outbound hardware, and a constantly shifting topology as customer environments are provisioned and decommissioned.

    Responsibilities

    Multi-Tenant Environment Security & Isolation

    • Design and enforce security segmentation between customer lab environments - ensuring no customer can reach another's segment through any path, intentional or accidental
    • Define the network security architecture for the lab: VLANs, micro-segmentation, firewall zoning, and inter-VLAN routing controls - with a zero-trust posture between tenant segments
    • Develop and maintain a customer environment provisioning security standard - covering how new lab environments are stood up, validated for isolation, and decommissioned cleanly without data or configuration remnants
    • Lead regular isolation validation exercises: penetration testing of tenant boundaries, traffic analysis, and configuration auditsĀ 
    • Customer Connectivity & External Access
    • Architect secure connectivity options for customers accessing lab environments remotely: ZTNA, IPSec/SSL VPN, MPLS/dedicated circuit - selecting appropriate models based on customer security requirements and sensitivity of the work
    • Define onboarding standards for external parties: identity verification, access scoping, MFA requirements, and time-limited access windows
    • Design and operate a secure remote access gateway that logs all customer sessions, enforces least-privilege network access, and integrates with the broader security monitoring stack


    What you bring

    • Recent, hands-on experience designing and configuring network security and identity controls yourself, not only setting policy or governance
    • Identity architecture for both workforce and non-human identities: service principals, managed identities, secrets management, and privileged access management
    • Practical experience with phishing-resistant MFA (FIDO2, passkeys, certificate-based auth) and device trust based on device compliance
    • Experience across multiple platforms and vendors, beyond a single ecosystem
    • A collaborative style: you design alongside engineers and subject matter experts, work through disagreements in real time, and hold your own with strong technical teams
    • Consulting-ready communication: you can explain the same concept clearly to a CISO, a developer, and a non-technical leader

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