Senior Windows Engineer, Active Directory and Server Platforms

About the role

Moderna is expanding its footprint to deliver impactful mRNA medicines. Our Cambridge technology hub server team supports research and pharmaceutical production through the design, implementation, administration, and support of server environments.

Responsibilities

• Own the architecture, health, and security of Active Directory, including forests, domains, trusts, and replication topology.
• Lead advanced integration and troubleshooting of authentication and identity (Kerberos, NTLM, SPNs, delegation, replication).
• Design and enforce Active Directory security controls, including tiered administration models (Tier 0/1/2) and privileged access strategies.
• Arcitect, manage, and secure enterprise PKI (ADCS), including certificate lifecycle, template governance, and CRL distribution.
• Define and maintain standards for Group Policy design, DNS architecture, and domain-joined systems.
• Own the operational health, lifecycle, and performance of enterprise Windows Server platforms (2016/2019/2022/2025).
• Lead server lifecycle management, including build standards, patching strategy, compliance, and decommissioning.
• Drive root cause analysis for complex systems, authentication, and performance issues across distributed environments.
• Define and enforce standards for server configuration, hardening, monitoring, and resiliency.
• Develop and maintain automation using PowerShell and related tooling to improve consistency and efficiency.
• Act as a senior escalation point and technical mentor for other engineers.
• Participate in escalation-level on-call, owning resolution of high-impact incidents.

Requirements

• Bachelor’s degree in computer science, engineering, or related field (or equivalent experience).
• 3-5 years deploying, securing and maintaining a global Active Directory environment.
• 7–10 years of professional experience supporting Microsoft Windows Server environments including all role and features.
• Proven experience operating enterprise-scale Windows Server environments, including performance, patching, and reliability.
• Deep ability to troubleshoot authentication, replication, network, and performance issues.
• Experience with patch management process and tooling, endpoint protection, and server hardening.

Qualifications

• Microsoft certifications (AZ800/AZ801, SC300, MCSA, MCSE, or equivalent).
• Experience implementing Active Directory security best practices (tiering models, privileged access controls, hardening).
• Experience working in hybrid on premises and cloud environments (VMware, AWS, Azure).
• Proficient with Microsoft and third-party monitoring and management tools.
• Experience in regulated environments (GXP, DISA-STIG, CIS, PCI, etc.).
• Ability to work independently, develop long term strategic Infrastructure enterprise goals.

Skills

• Hands-on technical expertise across all core Windows Server roles and features, including Active Directory, DNS, DHCP, Group Policy, and File/Print services.
• Deep troubleshooting, automation, and system optimization skills.
• Strong ability to troubleshoot authentication, replication, network, and performance issues.
• Experience with patch management process and tooling, endpoint protection, and server hardening.

Benefits

At Moderna, we offer best-in-class healthcare coverage, voluntary benefit programs, family planning benefits, generous paid time off, savings and investment opportunities, and a smoke-free, alcohol-free, and drug-free work environment. We also provide a comprehensive approach to well-being, including fitness, mindfulness, and mental health support. Moderna is committed to equal employment opportunity and non-discrimination for all employees and qualified applicants without regard to a person's race, color, sex, gender identity or expression, age, religion, national origin, ancestry or citizenship, ethnicity, disability, military or protected veteran status, genetic information, sexual orientation, marital or familial status, or any other personal characteristic protected under applicable law. We are an E-Verify employer in the United States and are committed to offering reasonable accommodations to qualified job applicants with disabilities.

Pay & Benefits

The salary range for this role is $130,800.00 - $209,400.00 (for positions that may be performed in California, the expected salary range is $167,400.00 - $192,600.00). This is the lowest to highest salary we in good faith believe we would pay for this role at the time of this posting. An individual’s position within the salary range will be based on several factors including, but not limited to, specific competencies, relevant education, qualifications, certifications, experience, skills, performance, and business or organizational needs. The successful candidate may be eligible for an annual discretionary bonus, other incentive compensation, or equity award, subject to company plan eligibility criteria and individual performance.

About Moderna

We are dedicated to building the leading mRNA technology platform, creating infrastructure to reimagine how medicines are created and delivered, and building a world-class team. We believe in giving our people a platform to change medicine and an opportunity to change the world. By living our mission, values, and mindsets every day, our people are the driving force behind our scientific progress and our culture. We are proud to have been recognized as a Science Magazine Top Biopharma Employer, a Fast Company Best Workplace for Innovators, and a Great Place to Work in the U.S. If you want to make a difference and join a team that is changing the future of medicine, we invite you to visit modernatx.com/careers to learn more about our current opportunities.

Working Model

We believe an in-person culture is critical to our success. Moderna champions the significant benefits of in-office collaboration by embracing a 70/30 work model. This 70% in-office structure helps to foster a culture rich in innovation, teamwork, and direct mentorship. Join us in shaping a world where every interaction is an opportunity to learn, contribute, and make a meaningful impact.

Export Control Notice

This position may involve access to technology or data that is subject to U.S. export control laws, including the Export Administration Regulations (EAR). As such, employment is contingent upon the applicant’s ability to access export-controlled information in accordance with U.S. law. Due to the nature of the work and regulatory requirements, only individuals who qualify as U.S. persons (citizens, permanent residents, asylees, or refugees) are eligible for this position. For this role Moderna is unable to sponsor non-U.S. persons to apply for an export control license.