Staff Rust Engineer - Ingress Network Security Lead

MongoDB; Cork; Hybrid; EUR 120,000 - 180,000; Full time

Job summary

MongoDB is seeking a Staff Engineer for the Server Ingress Security team, based in Dublin or Cork with a hybrid working model. You will define technical strategy, own security networking plans, and build production-grade Rust services to strengthen the Atlas Network Protec­tion layer.

You will mentor engineers and stay ahead on research in security and systems. You will collaborate across Server, Atlas, SRE, and Product Security to deliver high-impact security solutions while maintaining

Qualifications

• 10+ years of production-quality systems software experience.
• Experience with large backend/compiled codebases; performance-sensitive software; preferably Rust.
• Strong systems fundamentals: multi-threading and performance profiling.
• Knowledge of network protocols, TLS, and connection lifecycle management.
• Excellent verbal and written communication for diverse audiences.
• Mentorship skills and ability to coach peers.
• CS degree or equivalent practical experience with data structures and algorithms.
• Interest in high-availability, security-critical systems.
• Desire to learn new domains in CS and software engineering.

Responsibilities

• Define and drive the technical strategy for Ingress Security with stakeholders across teams.
• Own the design, planning, and execution of technical plans for security and networking solutions.
• Design, implement, and operate production-ready security services in Rust with focus on security and performance.
• Collaborate with Engineering leadership to improve the security posture of MongoDB's ingress stack.
• Advise on engineering complexity, risk, and inter-project dependencies.
• Handle time-sensitive escalations and production incidents requiring expert support.
• Diagnose test failures, bugs, performance regressions, and defects.
• Interview candidates and help grow the team's talent bench.
• Develop and maintain expertise on cutting-edge research in systems security.

Skills

10+ years experience

Rust experience

Security/networking experience

Multithreading

Networking TLS

Security concepts

Technical communication

Mentorship

Time management

CS degree or equivalent

HA/security focus

Learning mindset

Education

B.Sc. in Computer Science or related field or equivalent

Job description

MongoDB is seeking a Staff Engineer for the Server Ingress Security team, based in Dublin or Cork with a hybrid working model. You will define technical strategy, own security networking plans, and build production-grade Rust services to strengthen the Atlas Network Protec­tion layer.

You will mentor engineers and stay ahead on research in security and systems. You will collaborate across Server, Atlas, SRE, and Product Security to deliver high-impact security solutions while maintaining