Software Engineering Intern - Summer 2025 (Barcelona)

MongoDB’s mission is to empower innovators to create, transform, and disrupt industries by unleashing the power of software and data. We enable organizations of all sizes to easily build, scale, and run modern applications by helping them modernize legacy workloads, embrace innovation, and unleash AI. Our industry-leading developer data platform, MongoDB Atlas, is the only globally distributed, multi-cloud database and is available in more than 115 regions across AWS, Google Cloud, and Microsoft Azure. Atlas allows customers to build and run applications anywhere—on premises, or across cloud providers. With offices worldwide and over 175,000 new developers signing up to use MongoDB every month, it’s no wonder that leading organizations, like Samsung and Toyota, trust MongoDB to build next-generation, AI-powered applications.

We’re seeking curious minds like yours to collaborate with full-time engineers, learning standard development methodologies and gaining practical software engineering experience. Interns are fully integrated software engineers who spend the summer pushing production-level code to make lasting contributions to our products. 

About our teams

Our opportunities in Barcelona are on our API Experience integrations and Catalog and Routing teams. See below for more information about the specific teams.

API Experience 

As part of our team, you will be part of improving our users experience of working with the Atlas Administrative API. You will design and build a part of the API platform, ensuring MongoDB users and developers have a best-in-class experience. You will also have the opportunity to write open-source software such as AtlasCLI, MongoDB Local Atlas Experience, MongoDB Atlas Cloud Formation Resources, MongoDB Atlas Terraform Provider & MongoDB Atlas Go SDK, which helps us provide a "wow" experience to our customers by reducing the cognitive load required to get started on MongoDB Atlas & allow them to easily integrate their applications.

Catalog and Routing

The MongoDB Catalog and Routing team carries the important responsibility of hiding the complexity of building a distributed database system. They implement scalable interfaces with strong consistency guarantees which are used by other MongoDB developers to navigate and organize user data. As a result, their work has a direct impact on the productivity of the entire organization and the success of MongoDB’s horizontal scaling strategy.

Recent work includes the addition of unpartitioned datasets to the catalog such that it can be balanced across multiple nodes without splitting a table’s keyspace, embedding cluster topology components to reduce the operational complexity of running a sharded cluster, and the ability to perform concurrent data definition operation.

What we are looking for in you

• In the process of receiving a Bachelor’s or Master's degree in Computer Science, Computer Engineering, or related fields
• Have a foundation in computer science theory, with proficiencies in data structures, algorithms, and software design
• Fluent in any one of the following programming languages: Java, Python, Go, C++, Javascript, Node.js - or a comparable object-oriented programming language
• Fluency in English (oral and written)
• Due to complete studies in 2026
• Eligible to obtain an Internship Agreement from your University the full duration of the Summer internship 

What you'll find at MongoDB

• Authentic Culture: A workplace where you are encouraged to bring your whole self to work, we believe that Embracing the Power of Differences is the best way to broaden our own perspectives and foster innovation.
• Personalized Mentorship: Pair up with an engineering Mentor, a Program Advisor from the Early Talent Recruitment Team, and an Employee Resource Group (ERG) Guide to foster your growth.
• Career Coaching Sessions: Access to "MonGROWDB", a tailored training program designed uniquely for interns’ personal and professional development.
• Work-Life Harmony: Embrace "Bloom for Interns" with access to mental health benefits, paid time off, free lunch, and more!
• Impactful Projects: Contribute to projects where you can Make it Matter - your meaningful work will see the light of day.
• Exclusive Networking: Attend "Speaker Series" and "Roundtables" to connect with our executives and departmental leaders.
• Vibrant Community: Build connections with fellow interns and join after-work social events, virtual gatherings, and local city activities to create connections and friendships.
• Relocation Support: Financial assistance to allow you to comfortably settle into your new location.
• Path to Full-Time: A chance to see if MongoDB is where you see yourself long term with the possibility of receiving a full time offer at the end of the summer!

MongoDB internships are full-time (40 hours/week) for 10 consecutive weeks lasting from dates in June until August. All interns are considered hybrid employees, designated the "in office" working model and are expected to be in their office location 3-5 days a week.

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.