> Markdown version of [/jobs/ext/1771648-software-engineer-3-atlas-vector-search](https://www.wearedevelopers.com/jobs/ext/1771648-software-engineer-3-atlas-vector-search). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Software Engineer 3, Atlas Vector Search - **Company:** MongoDB - **Location:** San Francisco, CA, United States - **Salary:** $106,000.0 - $209,000.0 - **Contract:** Permanent contract - **Skills:** Java (Programming Language), Software Bug Management, Apache Lucene, Software Quality, Code Review, Databases, Java Virtual Machine (JVM), MongoDB, Search Technologies, Web Services, Backend - **Published:** July 26, 2026 - **Apply:** https://www.juju.com/job/00000000gjqzbq ## About the Role + 3+ years of experience working on large-scale backend systems + Experience writing high-performance applications in Java or another JVM language + A growth mindset and the desire to learn quickly through taking on challenges, reflecting on outcomes, and incorporating feedback + Passionate about optimization, code quality, and problem solving + Bonus: experienced with Apache Lucene, vector databases, or high-throughput web services Success Measures + In 3 months you'll have a solid high-level understanding of what our team does and how we operate + You'll have contributed to the development of an existing project and completed several small improvements or bug fixes + In 6 months you'll be reviewing code and project designs, and be an active participant in team meetings + In 12 months you'll have a thorough understanding of the systems our team owns and have led a small project. You'll have proposed small improvements to our code, product, or team processes ## Description Join the Vector Search team and help build a cutting-edge vector database on top of MongoDB. Our team is responsible for the syntax and implementation of MongoDB's $vectorSearch aggregation, which enables approximate nearest neighbor queries over high-dimensional vectors. We are a small team with a large and rapidly growing customer base, providing engineers an opportunity to make a highly-visible, broad impact. When scaling search to billions of vectors, performance is paramount. We're looking for engineers who enjoy solving complex and open-ended problems that directly impact users' performance. This role is based in San Francisco, CA with a hybrid work model. You would get to: + Implement new features within MongoDB's $search and $vectorSearch aggregation operators + Work cross-functionally with Product teams to define new query and index syntax + Identify and address performance bottlenecks in filter queries and nearest neighbor search + Have the opportunity to lead projects and own subsystems + Perform code reviews with peers, review technical designs, and mentor junior developers ## Related Videos - [Developing the Backend with Stefan Lingler, CTO at Shpock](https://www.wearedevelopers.com/videos/100360-developing-the-backend-with-stefan-lingler-cto-at-shpock) - [40 Minutes to Build a Serverless COVID-19 REST and GraphQL APIs](https://www.wearedevelopers.com/videos/208-40-minutes-to-build-a-serverless-covid-19-rest-and-graphql-apis) - [Kubernetes and Microservices with Multi-Model Databases](https://www.wearedevelopers.com/videos/382-kubernetes-and-microservices-with-multi-model-databases) - [Valven Atlas: Engineering Intelligence That Delivers](https://www.wearedevelopers.com/videos/1660-valven-atlas-engineering-intelligence-that-delivers) - [Protector Of The Realm](https://www.wearedevelopers.com/videos/591-protector-of-the-realm) - [NoSQL Data Modeling for Front-end Developers](https://www.wearedevelopers.com/videos/297-nosql-data-modeling-for-front-end-developers) ## Related Articles - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline) - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers) - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [What’s the Difference between a Junior, Mid, and Senior Developer?](https://www.wearedevelopers.com/magazine/238-what-s-the-difference-between-a-junior-mid-and-senior-developer) - [Dev Digest 131 - AI'm not sure about OSS](https://www.wearedevelopers.com/magazine/472-dev-digest-131-ai-m-not-sure-about-oss)