Security Software Engineer, Infrastructure Security (Staff or Senior)

Dublin, IrelandRemoteFull TimeStaffPosted 2 months ago

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Role summary

MongoDB is seeking an experienced Security Software Engineer (Staff or Senior) for its Infrastructure Security team, part of the Site Reliability Engineering organization. This role focuses on designing and building scalable security controls and services within MongoDB Atlas multi-cloud infrastructure (AWS, Azure, GCP). Responsibilities include developing core security primitives, secure-by-default infrastructure using Linux mechanisms and Kubernetes, creating automation for security posture management, and integrating security into CI/CD and IaC workflows. The ideal candidate has 5+ years of experience, proficiency in languages like Java, Golang, Rust, Python, or C/C++, and expertise in cloud security, Kubernetes, and Linux fundamentals. This role can be based in Dublin or fully remote in Ireland.

We are hiring an experienced Security Software Engineer (Staff or Senior) for our Infrastructure Security team to design and build scalable security controls and services within MongoDB Atlas multi-cloud infrastructure.

The team sits within the Site Reliability Engineering organization and works with other engineering teams to ensure that our infrastructure adheres to the highest security standards.

This role can be based out of our Dublin office, or work fully remotely in Ireland.

Responsibilities:

Design and build core security primitives and services that protect MongoDB Atlas compute, networking, and identity across AWS, Azure, and GCP

Build secure-by-default infrastructure using Linux security mechanisms (AppArmor, SELinux, seccomp, cgroups), Kubernetes, and eBPF to enforce runtime policies and gain deep visibility into systems behaviour

Develop APIs, automation, and tooling that manage security posture at scale (CSPM, vulnerability management, workload identity) and provide monitoring, logging, and alerting pipelines that integrate with our tooling (Grafana, Splunk, Victoria Metrics.)

Integrate security into our CI/CD and infrastructure-as-code workflows (Terraform) so that security controls are versioned, reviewed, and deployed just like any other code

Lead complex projects end‑to‑end, from problem discovery and design docs to implementation, rollout, and long‑term ownership

Collaborate with SRE, platform and product engineering teams to define secure architectures for new infrastructure and services

Qualifications:

You might be a great fit if you match some of the following:

5+ years of experience in Software Engineering, Site Reliability Engineering, or similar roles, preferably with relevant security work

Proficiency with at least one programming language (Java, Golang, Rust, Python, or C/C++) and experience with infrastructure-as-code tools (Terraform) to automate security configurations and processes

A deep understanding of Linux and networking concepts, including low-level fundamentals, and how they work together in complex systems

Experience building security-related features or platforms such as runtime monitoring, CSPM, or vulnerability management

Experience with a cloud provider (AWS, GCP, or Azure) and their security best practices and building blocks

Hands-on experience with Kubernetes and its security ecosystem (e.g. RBAC, OPA/Gatekeeper, Kyverno, eBPF, Falco, Tetragon)

A systems mindset: you think about failure modes, performance, observability, and operability alongside security and correctness

Strong communication skills and the ability to explain complex security concepts and tradeoffs to both technical and non-technical stakeholders

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: 426183

Sample MongoDB interview questions

1
Design an API Gateway
system designhard
2
Design Multi-player Figma
system designmedium

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