Our Database Experience (DBX) Team The Database Experience team builds the libraries and tools that developers use day-to-day working with Mongo DB. Our mission is to increase developer adoption, satisfaction and retention by providing a reliable, enjoyable interface for developers and other end-users. You might be right for this role if you… Advocate for testing and agile development best practices Can make pragmatic design tradeoffs while balancing features, maintainability, and delivery time Are fascinated by, and have experience working with concurrency, parallelism and distributed systems Communicate well, internally and externally, both in writing and face‑to‑face Enjoy collaborating with and elevate the skills and expertise of those around you Are excited about open source software development and communities Are excited by our mission and values For this role you must have… Have 5+ years of experience writing high‑quality software Have substantial, demonstrable experience writing high‑quality software in C# Proficiency in data structures, algorithms, networking, and concurrent programming Experience with databases, relational or non‑relational Good written and spoken English communication skills It helps if you have… Experience contributing to open source projects Familiarity with the latest. NET frameworks and modern. NET paradigms such as ASP. NET Core,. NET Aspire, Native AOT, source generators, spans/memory Experience working with Mongo DB and the document model A diversity of experience writing tests for the software you developed (unit, integration, end‑to‑end, performance, etc.) You’ll be on a team responsible for…. NET/C# Driver for Mongo DB Mongo DB Entity Framework Provider Mongo DB OData integration Mongo DB Analyzer Contributions to the third‑party open source libraries that we depend on Testing, delivering,



and supporting our libraries and tools across multiple operating systems and versions of Mongo DB You'll have responsibilities beyond just code, including… Working with our Product and Server teams on designs and specifications for new customer‑facing Mongo DB features Investigating bugs and support requests from commercial and open source customers for the libraries we maintain Seeking out speaking or writing opportunities to engage with our developer community Mentoring junior engineers in both technical and non‑technical professional skills Success in this role means… Within one month, you will understand the high‑level architecture of the driver and how Mongo DB works, and will have completed a few small bug fixes and/or feature tickets Within three months, you will contribute effectively day‑to‑day, fix bugs, implement planned features, and thoroughly review your colleagues’ pull requests Within six months, you will contribute to the roadmap for our products and lead the design and specification of new features. You will have the trust of the team and our internal customers Within a year, you will have significantly improved the quality, performance and maintainability of our codebase, and will be taking the lead in designing and specifying major new features Mongo DB 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 recruiter. Mongo DB, Inc. provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type and makes all hiring decisions without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state or local laws. Mongo DB’s base salary range for this role in the U. S. is: $126,000–$248,000 USD.

📌 Senior Software Engineer (Madrid)
🏢 Mongo DB
📍 Madrid