Role Description Arthrex is seeking an Infrastructure Analyst Lead with deep expertise in cloud networking and load-balancing. This role is responsible for designing, implementing, and optimizing Azure and AWS networking environments and application delivery solutions, while driving automation initiatives using Python, PowerShell, Azure CLI, and Ansible. The successful candidate will deliver scalable, reliable, and secure cloud networking services, while mentoring junior engineers and ensuring strong alignment with cross-functional infrastructure teams. - Architect, implement, and manage Azure cloud networking services (VNets, routing, peering, ExpressRoute, security groups, and their AWS equivalents). - Design and maintain Microsoft Azure, Citrix NetScaler, and other cloud load-balancing, application delivery, and traffic management solutions. - Troubleshoot complex networking and load-balancing issues across hybrid environments. - Coach and mentor junior engineers on cloud networking and automation best practices. - Manage stakeholder communication and provide clear technical updates to leadership and peers. - Automate repeatable and large-scale tasks with scripting tools such as Python, PowerShell, or Ansible. - Interface with networking infrastructure using APIs and SSH automation. - Develop and maintain continuous auditing and compliance checks for networking systems. - Collaborate with Cloud Operations, Datacenter Services, and other infrastructure teams to ensure architectural alignment, compatibility, and performance. - Ensure reliability, security, and compliance of infrastructure services. - Tier 3 support. - Lead the architecture and design of infrastructure solutions and methodology. - Lead high-profile, mission-critical IT projects and project teams. - Provide training, guidance, and mentorship to junior staff members to enhance their skills and ensure team efficacy. - Resolve and take ownership of issues without management involvement. - Assist management with strategic IT alignment and project management. - Liaison with vendors, partners, and external resources. - Ability to train other staff on technical operations. - Subject matter expert on the operation, maintenance, management, and deployment of multiple computer infrastructure hardware/software solutions. Qualifications - Expert knowledge of Microsoft Azure and other hyperscale networking technologies and services, including VWAN, VNET, ExpressRoute, Front Door, Web App, Traffic Manager, Load-Balancer, NSG, Private Endpoint. - Practice developing and deploying Infrastructure as Code, git for version control, and understanding of CI/CD pipelines. - Familiarity with Network Virtual Appliances (NVAs) in cloud infrastructure. - Experience with Citrix NetScaler or other load-balancing solutions (ADC, GSLB, SSL offload, traffic policies, web application firewall). - Strong automation skills using Python, PowerShell, and Ansible. - Proficient in routing protocols and WAN technologies, including Azure VWAN, BGP, SD-WAN, NAT, IPSEC VPN, DMVPN, HTTP(S), TCP/IP, DNS. - Ability to work with supporting teams to triage and troubleshoot complex issues. - Experience managing internal and external PKI certificate services. - Proven ability to troubleshoot and resolve complex networking issues in hybrid environments. - Experience leading junior staff in completing day-to-day operational tasks and/or enterprise scale projects required. - Computer infrastructure-centered certifications required. Requirements - High school diploma or equivalent required. - Bachelor’s degree or equivalent preferred. - 8+ years of experience in infrastructure engineering preferably with 2+ years of focus on cloud networking and load-balancing. - Excellent documentation and communication skills. - Certifications such as: - Microsoft Certified: Azure Solutions Architect Expert - Microsoft Certified: Azure Network Engineer Associate - AWS Certified Solutions Architect – Professional - AWS Certified Advanced Networking - Citrix Certified Professional – AppDS - CCNP Enterprise / JNCIP-ENT / ACE-P Benefits - Medical, Dental and Vision Insurance - Company-Provided Life Insurance - Voluntary Life Insurance - Flexible Spending Account (FSA) - Supplemental Insurance Plans (Accident, Cancer, Hospital, Critical Illness) - Matching 401(k) Retirement Plan - Annual Bonus - Wellness Incentive Program - Free Onsite Medical Clinics - Free Onsite Lunch - Tuition Reimbursement Program - Trip of a Lifetime - Paid Parental Leave - Paid Time Off - Volunteer PTO - Employee Assistance Provider (EAP)

Circle (NYSE: CRCL) is one of the world's leading internet financial platform companies, building the foundation of a more open, global economy through digital assets, payment applications, and programmable blockchain infrastructure. Circle's platform includes the world's largest regulated stablecoin network anchored by USDC, Circle Payments Network for global money movement, and Arc, an enterprise-grade blockchain designed to become the Economic OS for the internet. Enterprises, financial institutions, and developers use Circle to power trusted, internet-scale financial innovation. Learn more at circle.com . What you'll be part of: Circle is committed to visibility and stability in everything we do. As we grow as an organization, we're expanding into some of the world's strongest jurisdictions. Speed and efficiency are motivators for our success and our employees live by our company values : High Integrity, Future Forward, Multistakeholder, Mindful, and Driven by Excellence. We have built a flexible work environment where new ideas are encouraged and everyone is a stakeholder. What you'll be responsible for: Circle is looking for a passionate Security Engineer with an expertise in Cloud Security, deep understanding of different Blockchain technologies and Cloud based Infrastructure. You'll be part of the Security Engineering team and closely partner with the Infrastructure teams responsible for the development, deployment of the Arc Blockchain, USDC and supporting services. What you'll work on: - Actively partner with the Senior Director, Security Engineering on the Cloud Security strategy, implementation and operationalization - Actively partner with our Infrastructure teams on the development and deployment of the Arc chain and supporting services - Evolve, fine tune and expand our current Cloud Security posture across multiple platforms, cloud providers and systems. - Develop infrastructure requirements, security controls and delivery pipeline for third party validators running Arc nodes. - Recommend and validate Security controls and improvements across our infrastructure stack - Own and build relationships with key external stakeholders such as customers, vendors, and auditors - Produce data-based reports on technology risk for senior management - Drive continuous improvement in the tech stack What you'll bring to Circle: - 15+ years of experience as a security engineer or infrastructure security engineering with a minimum of five years (can be overlapping) with a focus on cybersecurity. - Expertise with Cloud Infrastructure like AWS, GCP or Azure - Expertise with running Blockchain nodes for different blockchains such as Ethereum, Cosmos, Solana and others. - Extensive knowledge of secure best practices for Cloud based Infrastructure - Extensive knowledge of containerization, orchestration and cloud scale solutions - You speak and write in Infrastructure as code, with an enthusiasm for automation, scalable and reproducible security practices - Self-motivated and creative problem-solver able to work independently - Proficiency in managing multiple competing priorities and use good judgment to establish order or priorities on the fly for themselves and their team. - Ability to influence internal and external customers to expediently resolve issues and achieve organizational objectives - The ability to design and operate controls that are easy to test and audit - Experience with application security including standards like OWASP, tools like Burp Suite, and secure coding practices is a requirement. - Experience working in financial services or financial technology desired - Advanced degree in computer science, or related fields strongly preferred. - An understanding of standards such as ISO 27001/27002 and the NIST Cybersecurity Framework desirable - Experience/familiarity with Slack, Apple MacOS and GSuite. Circle is on a mission to create an inclusive financial future, with transparency at our core. We consider a wide variety of elements when crafting our compensation ranges and total compensation packages. Starting pay is determined by various factors, including but not limited to: relevant experience, skill set, qualifications, and other business and organizational needs. Please note that compensation ranges may differ for candidates in other locations. Base Pay Range: $250,000 - $320,000 We are an equal opportunity employer. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status, or any other protected status required by the laws in the locations where we hire. Additionally, Circle participates in the E-Verify Program in certain locations, as required by law. Should you require accommodations or assistance in our interview process because of a disability, please reach out to accommodations@circle.com for support. We respect your privacy and will connect with you separately from our interview process to accommodate your needs. #LI-Remote

• Threat model, design, harden, and operationalize Product and Cloud Security services and controls at DoorDash scale. • Define, document and implement security standards, guidelines and procedures to design and implement automated security controls and remediation tools with rigor and developer ergonomics. • Partner cross-functionally with Core Infrastructure, Product Engineering, Legal, Security teams and Vendor Partners to build “paved paths” that provide actionable feedback to embed secure design practices into the product and infrastructure development process. • Lead the technical direction and roadmap execution for your assigned area of ownership. • Build and maintain high Operational Excellence (OE) to ensure we operate services with excellence, rigor and durable standards to ensure minimal downtime. • Participate in on-call rotation and promptly respond to on-call events with urgency and rigor. • Manage the lifecycle of product and cloud security vulnerabilities, from identification, triage, and drive remediation, reporting and metrics. • Influence and enable the secure and responsible adoption of LLMs and AI tools. • Mentor and coach earlier career engineers, setting high standards for Operational Excellence and Security Engineering.

• Responsible for defining, maintaining, and governing an end-to-end security solution design that spans global processes, data, people, and technology. • Creating conceptual, logical, and implementation architecture views aligned with global business needs. • Providing expert recommendations on security best practices that are business enablers, balancing the risk tolerance of Colliers while ensuring systems are secure and private by design. • Leading the security architecture strategy for cloud migration and modernization initiatives, specifically within Google Cloud Platform (GCP) and Microsoft Azure environments. • Ensuring designs leverage cloud-native security controls (e.g., Google Cloud Armor, Azure Sentinel, VPC Service Controls) effectively. • Partnering with Engineering and DevOps teams to embed security into the CI/CD pipeline ('Shift Left'). • Architecting secure containerization strategies (Kubernetes/GKE/AKS) and API security frameworks. • Developing governance and security guardrails for the adoption of emerging technologies, including Generative AI and Large Language Models (LLMs), ensuring safe business enablement. • Developing, maintaining, and governing the global security architecture framework, translating it into robust security designs for all enterprise programs and projects to ensure a consistent and compliant posture. • Collaborating with Project Managers, Solution Designers, and technical teams to integrate security and privacy into solution designs. • Leading the implementation of new security tools and technologies, overseeing their integration into the existing global security architecture. • Creating and maintaining comprehensive security technical architecture design documents and diagrams. • Identifying security gaps in existing and proposed architectures and recommending changes or enhancements. • Conducting technical documentation reviews, ensuring security considerations are well-defined and implemented. • Supporting the development and enforcement of Data security/Application security policies, standards, and procedures. • Conducting security reviews and assurance activities to identify risks and validate security compliance across corporate systems. • Continuously monitoring the evolving security landscape and technological advancements to adapt and refine risk-based security strategies.