Senior Software Engineer, Server Networking Security (Rust)
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At a glance
- Employment type
- Full-time
- Workplace
- Hybrid
- Category
- Full-stack
What you'll be doing
Join MongoDB's Server Ingress Security team as a Senior Software Engineer to design, implement, and operate security-critical networking services in Rust. You'll help build the Atlas Network Protection layer, focusing on security, performance, and operational excellence for MongoDB clusters.
- Design, implement, and operate production-ready security services in Rust
- Develop ingress networking and security solutions for database services
- Diagnose test failures and performance regressions, and implement fixes
- Lead development and project management for features and initiatives
- Collaborate across multiple teams to ensure seamless integration
- Work with Product Management and Engineering leadership to define roadmap
Key requirements
Must-have
- 5+ years of experience building production-quality systems software
- Experience with large backend/compiled codebases and performance-sensitive software, preferably in Rust
- Strong systems fundamentals, including multi-threaded programming and performance profiling
- Excellent verbal and written technical communication skills
- Strong time management skills
- B.Sc. in Computer Science or related field, or equivalent practical experience
- Strong competencies in data structures, algorithms, and software design/architecture
- Interest in high-availability, security-critical systems
Nice-to-have
- Experience in security-sensitive or networking-adjacent domains
- 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
Experience: 5+ years
Role signals
- Technical focus
- systems, security, networking
- Leadership
- Mentoring
- Architecture / system design
- Indicated in the listing
- Hands-on vs management
- Hands-on
Similar jobs
Full job description
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
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Design, implement, and operate production-ready security services in Rust, with a focus on security, correctness, performance, and operational excellence
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Develop ingress networking and security solutions that ensure the security, availability, and performance of a database service
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Diagnose test failures and performance regressions, and implement fixes
-
Lead development and project management for features and initiatives within the Ingress Security domain
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Collaborate across Server, Atlas, Drivers, SRE, and Product Security teams to ensure the Atlas Network Protection layer integrates seamlessly with the broader MongoDB ecosystem
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Collaborate with Product Management and Engineering leadership to define the team's roadmap
Success Measures
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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
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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
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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 data platform for the AI era, enabling builders to create, transform, and disrupt industries with software. MongoDB’s unified data platform, the most widely available, globally distributed data platform 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 data platform and is available across AWS, Google Cloud, and Microsoft Azure.
With offices worldwide and over 67,000 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 recruiter.
MongoDB is an equal opportunities employer.
Req ID: 1273370603
Interview prep pack
Grounded in this listing. Use it to prepare examples before you apply.
Your interview focus
You will be assessed on your ability to design, implement, and operate secure, performant networking services in Rust for MongoDB's Atlas Network Protection layer. Strong systems fundamentals, experience with large codebases, and collaboration across teams are key.
- Rust systems programming·High
- Network security engineering·High
- Performance optimization·High
- Cross-team collaboration·High
Only have 30 minutes?
Follow a focused preparation plan based on this job.
Start 30-minute prep
Your 30-minute plan
Revise Rust Systems Programming
0–10 minFocus on concurrency, memory safety, and performance profiling in Rust, especially as applied to backend services.
Review Network Security Fundamentals
10–17 minRefresh knowledge of network protocols, TLS, and strategies for reducing attack surfaces in distributed systems.
Prepare Leadership and Collaboration Examples
17–24 minRecall specific instances where you led projects, mentored others, or worked across teams on security or systems topics.
Research MongoDB Atlas Security
24–30 minRead public resources on Atlas's security model to understand the context of the Network Protection layer.
Talking points
, 6 itemsRust for Systems Programming
You will build production-ready security services in Rust, so deep knowledge of Rust's memory safety, concurrency, and performance features is essential.
Network Protocols and Security
The role focuses on ingress networking and security, requiring understanding of protocols, TLS, and attack surface reduction.
Performance Profiling and Optimization
You will work on performance-sensitive software and must diagnose regressions and optimize code for speed and reliability.
Systems Fundamentals
Strong grasp of multi-threaded programming, data structures, algorithms, and software architecture is required for designing robust services.
Collaborative Development Practices
You will collaborate across multiple teams and take on code review and mentoring responsibilities, so effective communication and teamwork are critical.
Security Concepts and Best Practices
Familiarity with input validation, memory safety, and defense-in-depth is needed to build and maintain security-critical services.
What to research
, 3 itemsRust for Security-Critical, Performance-Sensitive Services
Expect deep technical questions on using Rust to build secure, high-performance networking services, as this is central to the role.
Cross-Team Collaboration and Leadership
You will need to demonstrate experience collaborating across engineering, product, and security teams, and potentially mentoring others.
Diagnosing and Fixing Performance and Security Issues
Be ready to discuss your approach to identifying, analyzing, and resolving complex issues in large, multi-threaded codebases.
Questions to ask
, 6 itemsHow does the team prioritize security versus performance when designing new features?
Why ask this? Clarifies the decision-making process and what trade-offs you may encounter.
What are the main technical challenges currently facing the Atlas Network Protection layer?
Why ask this? Reveals the complexity and focus areas of the work you'll be doing.
How does collaboration work between the Ingress Security team and other engineering teams?
Why ask this? Helps you understand cross-team workflows and communication expectations.
What does success look like for this role in the first six months?
Why ask this? Sets clear expectations for your early contributions and growth.
How are code reviews and design discussions typically conducted?
Why ask this? Gives insight into the team's development practices and standards.
What opportunities are there for mentoring or leadership within the team?
Why ask this? Shows how you can contribute beyond coding and develop your leadership skills.
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