Software Engineer, Performance Infrastructure

Software Engineer, Performance Infrastructure at MongoDB

The MongoDB Developer Productivity team provides a highly leveraged foundation of shared tools and services that support our product development process. We succeed when MongoDB product and engineering teams are able to deliver the best solutions to our customers through a highly effective software development process.

The Performance Infrastructure Team aims to make it as easy as possible for MongoDB engineers to test and improve the performance of MongoDB products. As a Software Engineer, Performance Infrastructure, you will work closely with performance-focused engineers across the organization to design, build, and maintain our world-class performance benchmarking system and supporting tooling.

This role requires a hybrid working model based out of our office in Sydney, Australia.

What We Are Looking For In You

• A Bachelor’s or Master’s degree in Computer Science, Computer Engineering, Software Engineering, or a related field.
• A solid foundation in computer science fundamentals (data structures, algorithms, software design) and an ability to apply them to real problems.
• Proficiency in at least one modern programming language; Python is strongly preferred for this role, but experience in languages such as Go, Java, C++, or similar is also valuable.
• Experience writing and testing software via internships, personal projects, open source contributions, coursework, coding competitions, or research. You can point to code you’ve written that you’re proud of, and explain the trade-offs you made.
• An interest in or exposure to modern software delivery practices (e.g., CI/CD, containers, cloud platforms, observability tooling), and curiosity to go deeper. Prior hands-on experience is a plus but not a requirement for success in this role.
• Growing skills in clear written and verbal communication: you can explain what you’re working on, ask good questions, and incorporate feedback. You’re motivated to keep improving in this area.
• A growth mindset: you seek feedback, learn from mistakes, and look for opportunities to take on slightly more complex work over time.

We do not expect you to arrive as a performance expert or infrastructure specialist. We are looking for early-career engineers who are excited to learn how large-scale systems are built, measured, and improved, and who want to grow into owning more complex projects over time.

What You'll Find At MongoDB

As a Software Engineer, Performance Infrastructure, you will:

• Design, implement, and test features and bug fixes in our performance tooling and infrastructure, primarily using Python, with guidance from more senior engineers where needed.
• Contribute to performance workloads and benchmarking pipelines used to evaluate MongoDB across releases, platforms, and configurations, helping the broader organization understand how changes affect our products.
• Maintain and improve existing performance testing software by refactoring code, improving test coverage, and simplifying developer experiences for MongoDB engineers who use our tools.
• Work with teammates to debug and diagnose performance or reliability issues, learning how to use internal observability tools, logs, traces, and metrics to narrow down root causes.
• Participate actively in code reviews, both as an author and as a reviewer, asking clarifying questions and incorporating feedback to improve code quality and maintainability.
• Help keep our documentation, runbooks, and “getting started” guides for performance tooling accurate and approachable, especially for other early-career engineers and internal users.
• Build strong working relationships with engineers across MongoDB, representing user needs and pain points you encounter in your work and through support requests from other teams.
• Over time, take end-to-end ownership of small-to-medium-scoped projects, including breaking work into incremental pieces, communicating progress, and delivering improvements that meaningfully impact developer productivity and performance testing reliability.

You will be supported by a manager and teammates who will help you scope your work appropriately for your experience level, while expecting you to become increasingly independent as you grow in the role.

Success Measures

• In 1 month: Understand tools, systems, workflows; run core performance workloads. Complete small tasks and learn review processes. Comfortable asking questions, pairing with teammates.
• In 3 months: Independently productive in familiar codebase areas. Contribute meaningfully to a performance feature. Troubleshoot moderately complex bugs with help.
• In 6 months: Own small-to-medium projects, balancing quality and velocity. Contribute to improving tools and processes.
• In 12 months: Trusted contributor, taking new work with minimal supervision. Made visible improvements to tooling or developer experience. Demonstrate readiness for higher-level work.

About Us

MongoDB is built for change, empowering our customers and our people to innovate at the speed of the market. We have redefined the database for the AI era, enabling innovators to create, transform, and disrupt industries with software. MongoDB’s unified database platform—the most widely available, globally distributed database on the market—helps organizations modernize legacy workloads, embrace innovation, and unleash AI. Our cloud-native platform, MongoDB Atlas, is the only globally distributed, multi-cloud database and is available across AWS, Google Cloud, and Microsoft Azure.

With offices worldwide and nearly 60,000 customers—including 75% of the Fortune 100 and AI-native startups—relying on MongoDB for their most important applications, we’re powering the next era of software.

Our compass at MongoDB is our Leadership Commitment, guiding how and why we make decisions, show up for each other, and win. It’s what makes us MongoDB.

To drive the personal growth and business impact of our employees, we’re committed to developing a supportive and enriching culture for everyone. From employee affinity groups, to fertility assistance and a generous parental leave policy, we value our employees’ wellbeing and want to support them along every step of their professional and personal journeys. Learn more about what it’s like to work at MongoDB, and help us make an impact on the world!

MongoDB is committed to providing any necessary accommodations for individuals with disabilities within our application and interview process. To request an accommodation due to a disability, please inform your Early Talent Recruiter.

MongoDB is an equal opportunities employer.

Key skills/competency

• Performance Testing
• Benchmarking Systems
• Python Programming
• Software Design
• Data Structures
• Algorithms
• CI/CD
• Cloud Platforms
• Observability Tooling
• Debugging