Principal Software Development 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.

The Principal Software Development Engineer will be responsible for designing, developing, deploying, and maintaining custom software solutions. This role requires working in a dynamic, fast-moving environment as part of an agile team. You will collaborate with product owners and other team members to deliver full-stack web applications, drive software engineering best practices, and support cloud infrastructure.

Here’s What You’ll Do:

Your key responsibilities will be:

• Contribute to various projects in a fast-paced, agile environment.

• Collaborate with product owners and team members to understand business needs and translate them into effective solutions.

• Design and develop innovative full-stack web applications using modern JavaScript frameworks (e.g., Angular, React).

• Lead and implement software engineering best practices, including quality and test strategies.

• Monitor and analyze application performance, ensuring resilience and scalability.

Your responsibilities will also include:

• Integrate applications with existing systems to drive automation and analytics.

• Continuously improve applications in an evolving cloud infrastructure.

• Mentor and provide guidance to junior developers to help them grow in their roles.

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

• We behave like owners: As a Principal Engineer, you'll be responsible for driving technical excellence and mentoring your team to ensure projects align with company goals.

• We prioritize the platform: Your work on full-stack web applications and cloud infrastructure will support Moderna’s overarching platform strategy, ensuring solutions are scalable and reliable.

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

• Bachelor’s degree in Computer Science or a related field.

• 9+ years of experience in full-stack web application development.

• Proficiency with JavaScript frameworks (e.g., Angular, React) and backend frameworks (e.g., Node.js, Express.js, or Nest.js).

• Experience with relational databases (e.g., PostgreSQL) and writing SQL queries.

• Experience in testing frameworks such as Jest and Cypress.

• Experience with cloud platforms (e.g., AWS, Azure, GCP).

• A strong desire to work in a high-growth, transformative company.

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

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

• Master’s degree in Computer Science or a related discipline.

• Experience working in life sciences, biotech, or other scientific fields.

• Experience with RESTful API design, containerization (Docker, Kubernetes), and cloud infrastructure.

• Familiarity with Agile practices and documenting technical systems.

• Experience in a regulated environment.

Moderna offers personalized benefit programs and well-being resources as unique as our global workforce so employees can do their best work.

We recognize and appreciate your diverse needs and interests and do our best to support you at work and at home with:

• 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, and a discretionary year-end shutdown
• Educational resources
• 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 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 also consider qualified applicants regardless of criminal histories, consistent with legal requirements.

Belonging, Inclusion, and Diversity are critical to the success of our company and our impact on society. We’re focused on attracting, retaining, developing, and advancing our employees and believe that by cultivating diverse experiences, backgrounds, and ideas, we can provide an environment where every employee is able to contribute their best.

Moderna is committed to offering reasonable accommodations 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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