Cloud Infrastructure Support Engineer

Siepe is a fast-growing technology company headquartered in Dallas,TX –focused on helping investment managers turn complexity into clarity. We build software and data solutions that give hedge funds and financial services firms the visibility, speed, and confidence they need to make better decisions–faster.

Our platform delivers a unified source of truth that empowers our clients with real-time, actionable insights. We don’t just serve the industry–we help modernize it!

Siepe is profitable, privately held, and growing fast. We offer more than just competitive pay and great benefits—we offer the chance to do impactful work alongside sharp, driven teammates in a culture that rewards curiosity, initiative, and follow-through. Whether you come from finance, tech, or are charting a new path, you’ll find meaningful problems to solve, real ownership, and the momentum to grow your career with purpose.

Siepe is searching for a highly experienced Cloud Infrastructure Support Engineer to assume responsibility for the support, administration, security, optimization, and continuous improvement of Siepe’s internal SaaS infrastructure and client‑facing cloud environments. This individual will play a critical role supporting developers, DBAs, infrastructure teams, and external clients across more than 20 AWS tenants hosting Siepe platforms.

The environment consists primarily of Microsoft Windows infrastructure hosted on AWS EC2, including Active Directory domains, Microsoft SQL Server environments, application and web servers, development and QA environments, and secure networking connectivity using Meraki SD‑WAN and domain trust relationships.

The ideal candidate will possess expertise in AWS infrastructure operations, Windows Server administration, Active Directory, networking, automation, monitoring, and security best practices. This is a highly visible, hands‑on support role requiring strong operational discipline, communication skills, and the ability to work effectively in a fast‑paced financial technology environment.

• Support and administer over 20 AWS tenant environments hosting Siepe SaaS platforms and client infrastructure.
• Manage approximately 400 EC2 instances and supporting AWS infrastructure, primarily Windows-based systems.
• Perform all infrastructure adds, moves, changes, upgrades, and decommissioning activities across client and internal environments.
• Deploy new client environments as new customers are onboarded.
• Ensure systems are properly monitored, patched, backed up, secured, and maintained to meet operational and compliance requirements.
• Run weekly infrastructure health checks and proactively identify operational risks or performance concerns.
• Identify opportunities to reduce cloud operating costs by removing unused resources, rightsizing systems, and improving resource utilization.
• Manage Microsoft Active Directory environments across multiple AWS tenants and trusted domains.
• Maintain Group Policy Objects (GPOs), DNS, DHCP, DFS/DFSR, domain trusts, and role‑based access controls.
• Manage all user access, permissions, authentication, and security policies.
• Work with clients to configure secure external access solutions using SAML2, Single Sign-On (SSO), Identity Providers (IdP), VPNs, and related authentication technologies.
• Ensure vulnerabilities are identified, tracked, remediated, and documented in a timely manner.
• Maintain security best practices across Windows servers, networking, and cloud infrastructure.
• Assist with annual SOC 2 Type II audits, evidence collection, remediation tracking, and operational compliance initiatives.
• Escalate systemic risks, recurring issues, or infrastructure improvement opportunities to the infrastructure leadership team.
• Provide advanced infrastructure support to developers, DBAs, QA teams, and technical leads.
• Troubleshoot complex application, networking, authentication, and infrastructure‑related issues.
• Collaborate directly with clients to support connectivity, integrations, onboarding, and environment troubleshooting.
• Support hybrid networking and connectivity between AWS environments and Siepe corporate infrastructure using Meraki SD‑WAN.
• Utilize…