Sr Windows Systems Engineer

ACI Worldwide•Omaha, NE

1d•Hybrid

About The Position

ACI Worldwide is seeking a seasoned Senior Windows Systems Engineer with deep expertise in Active Directory, DNS, and related Microsoft infrastructure technologies. The role implements and configures complex systems and takes a lead role in their design for internal and external customers. It also analyzes existing systems, supports system maintenance, determines system specifications and hardware/software compatibility parameters, coordinates subsystem design and total-system integration, and identifies and resolves program support deficiencies. The engineer provides architectural and operational oversight for AOD services and products, develops technical solutions to meet business requirements, evaluates new technologies, and supports development and product teams with design reviews and technical expertise. The position is based in a standard work environment, with most time spent on a PC. Domestic or international travel may be required, and weekend or off-hours support may be needed.

Requirements

Bachelor's degree in computer science or equivalent experience.
At least 5 years of technical experience in product architecture and/or production IT environments.
Experience designing and implementing systems with a focus on scalability and high availability.
Experience configuring and troubleshooting production environments, including at least 2 years in a senior-level role.
Deep experience with Windows Server, Active Directory, DNS, Group Policy, and PowerShell.
A proven track record of designing and implementing high-availability, multi-site, and secure Windows infrastructure solutions.
Strong understanding of authentication protocols (Kerberos, NTLM, LDAP), ADFS, Azure AD, and PKI.
Experience leading large-scale migrations, upgrades, and integration projects.

Nice To Haves

Experience with hybrid identity and cloud integration, such as Azure AD Connect and Microsoft Entra.
Familiarity with Zero Trust architecture, conditional access, and identity governance.
Knowledge of automation frameworks, infrastructure-as-code, and DevOps practices.
Experience with compliance frameworks such as NIST, ISO, and SOX, and with security hardening of Windows environments.

Responsibilities

Provide AOD-centric architectural and operational oversight for development of new or enhanced services and products.
Engineer and configure complex technical solutions for application and system implementations and upgrades based on business requirements; solutions may be new, existing, in-house, third-party, or a combination.
Research and evaluate technologies and software products for feasibility and suitability for incorporation into company products.
Formulate and execute proof-of-concept test plans.
Support development and product teams with high-level analysis, AOD environment-based design reviews, performance, scalability and benchmark test guidance, and technology and design expertise.
Perform other duties as assigned.
Understand and adhere to corporate policies, including the ACI Code of Business Conduct and Ethics.