Windows Engineer

The Role

Joining Moderna offers the unique opportunity to be part of a pioneering team that's revolutionizing medicine through mRNA technology, with a diverse pipeline of development programs across various diseases.

As an employee, you'll be part of a continually growing organization, working alongside exceptional colleagues and strategic partners worldwide, contributing to global health initiatives.

Moderna's commitment to advancing the technological frontier of mRNA medicines ensures a challenging and rewarding career experience, with the potential to make a significant impact on patients' lives worldwide.

Moderna is solidifying its presence within our international business services hub in Warsaw, Poland, a city renowned for its rich scientific and technological heritage. This hub provides critical functions, meeting the growing demand of Moderna's global business operations. We're inviting professionals from around the world to join our mission and contribute to the future of mRNA medicines.

As Moderna continues to expand its global operations to deliver the greatest possible impact through mRNA medicines, we are seeking a Windows Server Engineer to join our Warsaw-based technology hub. Supporting a global remit, this critical role sits within the team responsible for the design, implementation, administration, and support of Windows-based server environments across Moderna's research and pharmaceutical production.

You will bring deep technical expertise across core Windows Server roles including Active Directory, DNS, DHCP, Group Policy, and File/Print services. You'll be hands-on and detail-driven, with a strong focus on automation, troubleshooting, system performance, and enterprise security. This is a unique opportunity to help build and scale global infrastructure that is foundational to Moderna's science and digital platform — including direct exposure to modern AI tools and evolving generative technology stacks.

What You will Do

Your key responsibilities will be:

• Architecting highly available server solutions for Moderna's corporate, research, and pharmaceutical production environments, leveraging Windows Server and Azure services.

• Serving as the subject matter expert (SME) for the Windows Server platform during design, planning, and implementation of global technology projects.

• Managing multi-forest Active Directory environments, including site topology, DNS zone management, replication health, OU delegation, and lifecycle management of domain controllers.

• Leading assessments and implementations that enhance identity and server security, incorporating least privilege principles and administrative tiering.

Your responsibilities will also include:

• Acting as the final escalation point for complex system issues, including performance, network, and authentication-related challenges.

• Designing, implementing, and maintaining Windows Server security baselines and patching programs to ensure system integrity.

• Creating, managing, and troubleshooting Group Policy Objects (GPOs) for user and device configurations.

• Administering services such as DNS, File and Print, RDS, Windows Failover Clustering, and Active Directory Certificate Services (ADCS).

• Developing automation tools and scripts using PowerShell to improve efficiency across system operations and configuration management.

• Participating in the global on-call support rotation and responding to escalated incidents when needed.

The key Moderna Mindsets you'll need to succeed in the role:

• We digitize everywhere possible using the power of code to maximize our impact on patients. In this role, your work will directly influence Moderna's digital infrastructure — using automation, PowerShell, and scripting to drive scalable, reliable systems that enable scientific innovation.

• We behave like owners. The solutions we're building go beyond any job description. You'll need to think beyond tickets and tasks, proactively identifying opportunities to improve architecture, security, and operations — all with a focus on enabling Moderna's mission to improve lives globally through mRNA medicines.

Here's What You'll Need (Basic Qualifications)

• Bachelor's degree in computer science, engineering, or related field (or equivalent experience).

• 7+ years of professional experience supporting Microsoft Windows Server and Active Directory environments

• Strong understanding of Active Directory, DNS, DHCP, GPO, and NTFS permissions.

• Proven 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).

• Industry certifications (CISSP, CISM, CASP+, SEC+, ITILv3/v4)

• Proven experience in Microsoft System Administration with a strong focus on PowerShell scripting.

• 3+ years working in a Hybrid Cloud (AWS or Azure), Windows, and Linux environment.

• Experience deploying and managing virtual servers under vCenter or Hyper-V hypervisors.

• Strong working knowledge of Public Key Infrastructure (PKI), X.509 certificates, SSL/TLS Certificate lifecycle management and tracking/rotation

• Proficient with troubleshooting tools (Wireshark, Fiddler, Splunk, Dynatrace) 

• 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 global benefits and well-being resources are designed to support you—at work, at home, and everywhere in between.

• Quality healthcare and insurance benefits
• Lifestyle Spending Accounts to create your own pathway to well-being
• Free premium access to fitness, nutrition, and mindfulness classes
• Family planning and adoption benefits
• Generous paid time off, including vacation, bank holidays, volunteer days, sabbatical, global recharge days, and a discretionary year-end shutdown
• Savings and investments
• Location-specific perks and extras

The benefits offered may vary depending on the nature of your employment with Moderna and the country where you work.

About Moderna

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. 

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. 

If you want to make a difference and join a team that is changing the future of medicine, we invite you to visit to learn more about our current opportunities. 

Moderna is a smoke-free, alcohol-free, and drug-free work environment. 

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 committed to equal opportunity in employment 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 consider qualified applicants regardless of criminal histories, consistent with legal requirements. 

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 accommodation or adjustments to qualified job applicants with disabilities. Any applicant requiring an accommodation or adjustment 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 and Adjustments team at  

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