Software Engineer 3, Customer Observability

We’re looking for a mid-level Software Engineer (Software Engineer 3) to join the Atlas Growth Platforms team, focused on enabling data-informed decision making and accelerating growth across MongoDB Atlas. This team is responsible for key infrastructure powering experimentation, service configuration, and partner integrations that shape the user experience and drive business impact at scale. In this role, you'll work primarily on backend services (80%), with opportunities to contribute to frontend systems (20%) that power our A/B testing platform, feature flagging service, analytics pipelines, and partner integrations. You'll collaborate closely with Product, Analytics, and other engineering teams to build and scale services that deliver targeted experiences and personalized recommendations for our users. You’ll also contribute to the evolution of our experimentation framework and play a role in shaping how we partner with external platforms to grow our ecosystem and reach new customers. We are looking to speak to candidates who are based in Dublin for our hybrid working model. RESPONSIBILITIES * Design, build, and maintain scalable backend services that power feature flagging, experimentation, and analytics infrastructure for MongoDB Atlas * Develop and evolve APIs, data models, and pipelines that support experimentation, personalization, and partner integrations * Contribute to components that enable internal teams to easily run experiments and analyze their impact * Improve observability, reliability, and performance across our systems, especially in the context of experimentation and service configuration at scale * Lead and participate in technical design discussions and code reviews, and mentor other engineers * Uphold engineering best practices and help drive a culture of quality, customer focus, and continuous learning * Participate in the 24/7 team on-call rotation up to once per quarter, responding to critical incidents and ensuring service reliability with support from team playbooks and escalation paths * Own our core values and leadership principles in all that you do BASIC QUALIFICATIONS * 3+ years of professional software engineering experience, including backend development with a compiled language such as Java or C# * Hands-on experience with modern JavaScript libraries and frameworks * Solid understanding of distributed systems and experience designing APIs and services in a microservice environment * Strong collaboration and communication skills; able to work cross-functionally with Product, Analytics, and other Engineering teams * Passion for continuous learning and writing clean, maintainable, well-tested code PREFERRED SKILLS * Experience with experimentation frameworks and A/B testing at scale * Familiarity with tools like Segment, Amplitude, or other analytics platforms * Experience deploying and operating services in Kubernetes * Prior work integrating with partner ecosystems or building external-facing public APIs * Contributions to shared infrastructure that enables internal teams to move faster or make better decisions SUCCESS MEASURES A Software Engineer 3 will be successful in this role when they: * Deliver backend features and services that are reliable, maintainable, and meet the needs of internal and external stakeholders * Successfully implement cross-functional initiatives, aligning with Product, Analytics, and other engineering teams to define requirements and deliver value * Occasionally lead small to mid-sized projects with the help of more senior engineers * Provide thoughtful code reviews, helping to raise the bar for engineering quality and collaboration * Continuously learn and adapt, bringing in new ideas and best practices that keep our team and systems evolving * Are willing to learn and contribute to all parts of the stack * Are resolute in their approach to problem solving, balancing the needs of their team with the willingness to get to the bottom of issues 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: 2273449461

MongoDB’s mission is to empower innovators to create, transform, and disrupt industries by unleashing the power of software and data. We enable organizations of all sizes to easily build, scale, and run modern applications by helping them modernize legacy workloads, embrace innovation, and unleash AI. Our industry-leading developer data platform, MongoDB Atlas, is the only globally distributed, multi-cloud database and is available in more than 115 regions across AWS, Google Cloud, and Microsoft Azure. Atlas allows customers to build and run applications anywhere—on premises, or across cloud providers. With offices worldwide and over 175,000 new developers signing up to use MongoDB every month, it’s no wonder that leading organizations, like Samsung and Toyota, trust MongoDB to build next-generation, AI-powered applications. The Site Reliability Engineering team designs and builds the global infrastructure on which we deploy our services, focusing on the above mentioned flagship MongoDB Atlas platform. As our customers grow and globalize, our services must satisfy demands for low-latency requests around the globe, and comply with various data sovereignty requirements. The SRE Team’s mission is to build this increasingly complex infrastructure, while continually lowering the operational burden associated with it, and increasing our internal visibility into the health of the system. We are strong believers in infrastructure-as-code and self-healing systems. The SRE Team is fully integrated with all the other engineering teams, and the teams work closely together with a soft and traversable boundary between their areas of responsibility. We are looking to speak to candidates who are based in Dublin for our hybrid working model. RESPONSIBILITIES * Design and build the infrastructure for a global cloud service that comprises hundreds of thousands of MongoDB clusters, processes a billion metrics per day, and replicates tens of billions of database writes to our backup service * Design, implement, and troubleshoot the automation and monitoring of services that seamlessly spans the globe - including several cloud providers * Become an expert in infrastructure performance, helping us optimize from the application level all the way through the firmware * Build for resilience. Our goal is that nobody’s pager goes off, ever. Are we there yet? No. Are we really close? Very. While we work on that - participate in a weekly on-call rotation * Improve our infrastructure capabilities, optimizing for cost, simplicity, and maintainability REQUIREMENTS * 3+ years of experience running a mission critical service at scale in a Linux environment * Firm grasp of at least one modern programming language, beyond basic scripting * Familiarity with web and network protocols and standards (HTTP, TLS, DNS, etc) * Bachelor’s degree in Computer Science or equivalent experience * Experience writing automation tools & eagerness to "automate all the things" NICE TO HAVE * Experience building large applications from scratch, complete with CI/CD infrastructure * Experience in networking, security, hardware or OS performance tuning * Experience with at least one of the major cloud providers (Amazon Web Services, Google Compute, Microsoft Azure) * Experience managing kubernetes clusters or some other container orchestration infrastructure * Experience with observability of large scale distributed systems 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: 3263213607