Infrastructure Support Engineer

Siepe is a fast-growing technology company helping investment managers turn complexity into clarity. We build software and data solutions that give hedge funds and financial services firms the real-time insights and operational visibility they need to make better decisions faster.

Our clients manage billions in assets and rely on Siepe for critical technology, data, and operational workflows. We serve sophisticated global clients and move quickly, challenge how things are done, and give people meaningful ownership and the opportunity to make a real impact.

Impactful work on problems that matter. Direct visibility into how your contributions affect clients and real input on decisions. Competitive pay, great benefits, and opportunities to learn and take on more as Siepe grows. Teammates who are sharp and collaborative, whether they come from the industry or are charting a new path entirely. You will get to be part of a culture that blends fun with purpose!

We lead with trust, transparency, and a team-first mindset. We communicate early, follow through on our commitments, and take ownership of outcomes - not just execute. When there’s a problem, we bring ideas and solutions, ask the next question, and keep things moving. We stay curious, challenge ideas, and prioritize what’s best for our clients and Siepe. We move with urgency, learn as we go, and work together to leave things better than we found them.

We’re looking for a highly experienced Cloud Infrastructure Support Engineer to be responsible 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 primarily features a Microsoft Windows infrastructure hosted on AWS EC2, including Active Directory domains, Microsoft SQL Server environments, application and web servers, development and QA environments, as well as secure network connectivity through Meraki SD-WAN and domain trust relationships.

The ideal candidate will have 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 that demands strong operational discipline, effective communication skills, and the ability to excel in a fast-paced financial technology environment.

• Support and administer 20+ AWS tenant environments and ~400 EC2 instances hosting Siepe SaaS platforms and client infrastructure, primarily across Windows-based systems.

• Manage the full infrastructure lifecycle, including environment deployments, adds/moves/changes, upgrades, patching, backups, monitoring, and decommissioning.

• Deploy and configure infrastructure for new client onboarding, supporting connectivity, integrations, authentication, and ongoing environment needs.

• Administer Microsoft Active Directory across multiple AWS tenants and trusted domains, including GPOs, DNS, DHCP, DFS/DFSR, domain trusts, permissions, and role-based access.

• Configure and support secure client access using SAML2, SSO, Identity Providers (IdP), VPNs, and related authentication technologies.

• Maintain the security, availability, and compliance of cloud and Windows infrastructure, including vulnerability remediation, operational controls, and support for annual SOC 2 Type II audits.

• Monitor infrastructure health and proactively identify performance, reliability, security, and cost optimization opportunities, including…