Senior Software Engineer, Server Networking Security (Rust)

Come join the Server Ingress Security team, where we are rearchitecting MongoDB Server’s ingress networking to make MongoDB clusters even more secure. This new team is building the Atlas Network Protection layer, a set of performant, security-critical services that harden MongoDB's pre-authentication attack surface and provides the ability to respond rapidly to emergent threats. We are looking for talented Senior Engineers to join the team and be founding members, where you will play a crucial role in our multi-year roadmap.

Our team champions a strong culture of inclusivity, diversity, and collaboration. If you want to work on a collaborative team that applies security and systems engineering fundamentals to protect a popular database at scale, join us!

We are looking to speak to candidates who are based in Dublin for our hybrid working model.

Candidate Profile

5+ years of experience building production-quality systems software

Experience with large backend/compiled codebases and performance-sensitive software, preferably in Rust

Bonus points for experience working hands-on in security-sensitive or networking-adjacent domains

Strong systems fundamentals, including multi-threaded programming and performance profiling. Bonus points for:

Understanding of network protocols, TLS, and connection lifecycle management

Familiarity with security concepts such as attack surface reduction, input validation, memory safety, and defense-in-depth architectures

Excellent verbal and written technical communication skills, with a strong desire to collaborate with colleagues

Strong time management skills and the ability to realistically assess project complexity

B.Sc. in Computer Science or a related field, or equivalent practical experience, with strong competencies in data structures, algorithms, and software design/architecture. Interest in the theory and practice of high-availability, security-critical systems

Position Expectations

Design, implement, and operate production-ready security services in Rust, with a focus on security, correctness, performance, and operational excellence

Develop ingress networking and security solutions that ensure the security, availability, and performance of a database service

Diagnose test failures and performance regressions, and implement fixes

Lead development and project management for features and initiatives within the Ingress Security domain

Collaborate across Server, Atlas, Drivers, SRE, and Product Security teams to ensure the Atlas Network Protection layer integrates seamlessly with the broader MongoDB ecosystem

Collaborate with Product Management and Engineering leadership to define the team's roadmap

Success Measures

In the first month: Understand the high-level architecture of the Atlas Network Protection layer, set up your development environment, and resolve a few bugs

In three months: Contribute substantially to the Rust development of a current project or milestone, take on code review responsibilities, and participate in reviewing designs for new features

In six months: Independently lead the development of a new feature and help mentor new engineers on the team

In twelve months: Drive significant improvements to the security, performance, or operational capabilities of the Ingress Security stack, and contribute to the long-term technical roadmap of the team

About MongoDB

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.

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