Senior Software Developer, ML Platform

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.​

Moderna is seeking a Senior Software Developer (SDE) / Machine Learning Engineer (MLE) to join the ML Platform Team in Warsaw. This role is pivotal in developing tools and infrastructure to support data scientists in both experimentation and productionalization of machine learning models. As a Sr. SDE, you will work closely with data science and application teams to deliver real-world AI/ML applications that drive Moderna’s mission forward.

We are looking for an individual who is deeply curious, has an excellent work ethic, and is passionate about leveraging cutting-edge machine learning and software engineering to bring novel mRNA therapeutics and vaccines to market—ultimately improving the lives of patients worldwide.

Here’s What You’ll Do

Your key responsibilities will be:

• Lead the design and development of software systems supporting machine learning solutions, ensuring scalability, efficiency, and robustness.

• Architect and implement end-to-end machine learning pipelines, including data ingestion, preprocessing, re-training, evaluation, deployment, CI/CD, and automated testing.

• Develop and maintain high-performance APIs and microservices to support AI-driven applications.

• Optimize existing ML systems for performance and scalability.

• Implement best software development practices, including code reviews, testing, and documentation.

• Ensure compliance with data security and privacy regulations throughout the development lifecycle.

Your responsibilities will also include:

• Collaborating closely with data scientists, product managers, and stakeholders to translate business needs into technical solutions.

• Writing clean, maintainable, and well-documented code across a variety of programming languages.

• Mentoring and guiding junior engineers, fostering a culture of continuous learning and technical excellence.

• Troubleshooting and resolving complex technical issues, ensuring reliability and performance of deployed ML systems.

• Staying up to date with the latest advancements in AI and ML, integrating innovative technologies into Moderna’s software ecosystem.

• Additional duties as may be assigned from time to time.

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

• We Digitize Everywhere Possible – You will be at the forefront of building and optimizing AI-driven applications, leveraging modern software engineering and machine learning tools to drive real-world impact. Your ability to harness digital advancements and implement scalable ML pipelines will be crucial to Moderna’s success.​

• We Push Past Possible – The challenges in AI/ML within biotech are complex and unprecedented. You must be bold in experimentation, fearless in problem-solving, and relentless in driving innovation, ensuring our ML systems are best-in-class and impactful to global healthcare.

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

• Bachelor’s, Master’s, or PhD in Computer Science, Engineering, or a related field.

• Extensive experience (5+ years) in software engineering, with a focus on AI and machine learning.

• Demonstrated understanding of and prior experience with ML workflows

• Experience building tools to deploy ML models to the cloud using CI/CD

• Proven track record of designing and deploying large-scale machine learning systems in production environments.

• Deep understanding of deep learning frameworks (e.g., PyTorch, PyTorch Lightning, JAX) and libraries (e.g., CUDA).

• Experience with containerization technologies (e.g., Docker, Kubernetes).

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

• 5+ years of experience delivering software projects, preferably in an industry setting

• Outstanding communication skills (verbal, written, and virtual/remote)

• Success in communicating effectively at multiple levels of stakeholdership

• Demonstrated experience building machine learning workflows and executing complex and interdisciplinary software projects.

• Fluency in Python, especially machine learning (Sklearn/PyTorch).

• Experience with fine-tuning and deploying LLM technologies (e.g., Llama) on cloud infrastructure (e.g., AWS Bedrock).

• Familiarity with best practices in software development including coding standards, code reviews, version control (Git), build process, software testing, operations, and documentation.

• Knowledge of Amazon Web Services (like ECR, ECS, EC2, etc).

• Experience troubleshooting and debugging technical systems.

• Working knowledge of Unix operating systems.

• Working knowledge of distributed systems/applications.

• Working knowledge of databases (e.g., PostgreSQL).

• Ability to manage multiple projects and effectively collaborate in a dynamic, cross-functional environment.

• Experience in agile/scrum or related collaborative workflow.

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

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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