Senior Windows Engineer, Active Directory and Server Platforms

Moderna is expanding our footprint to deliver the greatest possible impact to people through mRNA medicines. Our Cambridge technology hub server team is responsible for the design, implementation, administration, and support of the server environments supporting our research and pharmaceutical production. This role requires deep expertise across all core Windows Server roles and features, including Active Directory, DNS, DHCP, Group Policy, and File/Print services. The ideal candidate is a hands-on technical expert who excels in troubleshooting, automation, and system optimization to ensure stability, scalability, and security across enterprise systems.

We are seeking experienced engineers who embody the Moderna Mindsets and want to help transform patients' lives by building reliable, secure, and scalable systems.

Here's What You'll Do

• 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.
• Architect, 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

• 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.

Here's What You'll Bring to the Table (Preferred 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.

At Moderna, we believe that when you feel your best, you can do your best work. That's why our US benefits and global well-being resources are designed to support you-at work, at home, and everywhere in between.

• Best-in-class healthcare coverage, plus voluntary benefit programs to support your unique needs
• A holistic approach to well-being, with access to fitness, mindfulness, and mental health support
• Family planning benefits, including fertility, adoption, and surrogacy support
• Generous paid time off, including vacation, volunteer days, sabbatical, global recharge days, and a discretionary year-end shutdown
• Savings and investment opportunities to help you plan for the future
• Location-specific perks and extras

The salary range for this role is $130,800.00 - $209,400.00. 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.

Since our founding in 2010, we have aspired to build the leading mRNA technology platform, the infrastructure to reimagine how medicines are created and delivered, and 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. Together, we are creating a culture of belonging and building an organization that cares deeply for our patients, our employees, the environment, and our communities. 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. Our Working Model As we build our company, we have always believed 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. Moderna is a smoke-free, alcohol-free, and drug-free work environment. Equal Opportunities 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.Moderna is a place where everyone can grow. If you meet the Basic Qualifications for the role and you would be excited to contribute to our mission every day, please apply! Moderna is an E-Verify Employer in the United States. We consider qualified applicants regardless of criminal histories, consistent with legal requirements. Accommodations We're focused on attracting, retaining, developing, and advancing our employees. By cultivating a workplace that values diverse experiences, backgrounds, and ideas, we create an environment where every employee can contribute their best. Moderna is committed to offering reasonable accommodations to qualified job applicants with disabilities. Any applicant requiring an accommodation in connection with the hiring process and/or to perform the essential functions of the position for which the applicant has applied should contact the Accommodations team at leavesandaccommodations@modernatx.com., Moderna is advancing messenger RNA (mRNA) science to create a new class of transformative medicines for patients. Moderna's platform builds on continuous advances in basic and applied mRNA science, delivery technology and manufacturing, providing the Company the capability to pursue in parallel a robust pipeline of new development candidates. Moderna is developing therapeutics and vaccines for infectious diseases, immuno-oncology, rare diseases and cardiovascular diseases, independently and with strategic collaborators. mRNA is now a turning point in the history of science, medicine, technology, even humankind itself. With this breakthrough discovery, many of the world's biggest and most challenging medical problems are no longer a question of "how?" but merely a question of "when?" Come with us as we pursue the uncharted reaches of possibility and make your mark on the future of medicine.