MongoDB is looking for a mid-level Software Engineer (Software Engineer 3) to join the Atlas Growth Platforms team, which owns key infrastructure for experimentation, service configuration, and partner integrations across MongoDB Atlas. You will work primarily on backend services (80%) with some frontend work (20%), powering the A/B testing platform, feature flagging service, analytics pipelines, and partner integrations, collaborating closely with Product, Analytics, and other engineering teams. The role is based in Dublin with a 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 the systems, especially for experimentation and service configuration at scale
- ▹Lead and participate in technical design discussions and code reviews, and mentor other engineers
- ▹Participate in the 24/7 team on-call rotation up to once per quarter, responding to critical incidents with support from team playbooks and escalation paths
Requirements
- ▹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
Nice to have
- ▹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
Soft skills
What we offer
- ▹Employee affinity groups
- ▹Fertility assistance
- ▹Generous parental leave policy
About the company
MongoDB has redefined the data platform for the AI era. Its unified data platform is the most widely available, globally distributed data platform on the market, and its cloud-native platform, MongoDB Atlas, is the only globally distributed, multi-cloud data platform, available across AWS, Google Cloud, and Microsoft Azure. MongoDB has offices worldwide and over 67,000 customers, including 75% of the Fortune 100. MongoDB is an equal opportunities employer.