Sr. Site Reliability 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.​

Moderna’s Cloud Engineering and Operations organization is at the forefront of transforming our enterprise use of the Cloud, ensuring secure, scalable, and reliable digital infrastructure. As a Site Reliability Engineer, you will be instrumental in bridging traditional IT infrastructure with modern cloud technologies, providing hands-on technical expertise, and driving automation to optimize stability and cost-efficiency. You will collaborate closely with internal engineering teams and business stakeholders to enhance our cloud-based and on-premises infrastructure.

We are seeking an experienced and strategic problem-solver who thrives in fast-paced environments, maintains a sense of urgency, and has a passion for automation. This role requires a proactive individual who can mentor junior engineers, troubleshoot complex challenges, and contribute to the ongoing evolution of Moderna’s digital ecosystem.

Here’s What You’ll Do

Your key responsibilities will be:

• Lead team projects, mentor engineers (as applicable), and contribute to team architecture decisions.

• Define and implement resilient, high-performance, and scalable infrastructure solutions.

• Troubleshoot complex system challenges and decompose them into manageable tasks.

• Establish and enforce engineering, testing, and operational excellence standards.

• Participate in an on-call rotation (24x7x365) to support Moderna’s business operations.

• Collaborate across organizations to enhance supportability and maintainability of cloud platforms.

• Execute change requests and planned modifications to maintain the environment.

Your responsibilities will also include:

• Advocating for best engineering practices, including coding standards, reviews, CI/CD pipelines, and automation.

• Driving cost-optimization strategies while maintaining high availability.

• Engaging in full-stack cloud and infrastructure design, ensuring seamless integration with internal systems.

• Producing technical documentation on system architectures, workflows, and best practices.

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

• We behave like owners – You take full responsibility for the infrastructure, ensuring reliability and scalability beyond a job description.

• We act with dynamic range – You seamlessly balance strategic thinking with hands-on execution, ensuring high-impact results at every stage.

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

• Bachelor’s degree in computer science or a related technology or scientific field OR 5 years of equivalent professional experience in lieu of a degree.

• 3+ years of programming experience with at least one modern language, such as Python, Ruby, PowerShell, etc.

• 4+ years of job-related experience in a non-internship role.

• 2+ years of experience designing or architecting (design patterns, reliability and scaling) of new and existing systems.

• Experience with modern full-stack software applications both built or off the shelf.

• Experience documenting technical systems, user workflows, and user requirements.

• Experience with traditional IT infrastructure as well as the Cloud, preferably AWS.

Here’s What You’ll Bring to the Table (Preferred Qualifications)

• Experience leading the design, build, and deployment of complex and performant (reliable and scalable) software/system solutions in a production environment.

• Experience taking a leading role in building complex software or computing infrastructure that has been successfully delivered to customers.

• Knowledge of and advocation of engineer practices and patterns for the full life cycle, including coding standards, code reviews, source control management, build processes, testing, certification, and production operations.

• Evidence of Moderna Mindset: “We behave like owners. The solutions we're building go beyond any job description”

• Evidence of Moderna Mindset: “We Act with dynamic range, driving strategy and execution at the same time at every step”

• Evidence of Moderna Mindset: “We Prioritize the platform over any single solution”

• Experience in a regulated environment

• A desire to make an impact as part of a high-growth, transformational company that is Bold, Relentless, Curious, and Collaborative

• Self-directed and self-motivated; excellent communicator and collaborator

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 modernatx.com/careers 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 [email protected]. 

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