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Software Engineer - Cypher Planner



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Software Engineering
Malmö, Sweden
Posted on Monday, December 11, 2023
About Neo4j:

Neo4j is the leader in Graph Database & Analytics, helping organizations uncover hidden relationships and patterns across billions of data connections deeply, easily and quickly. Customers use Neo4j to gain a deeper understanding and reveal new ways of solving their most pressing problems. Over 75% of Fortune 100 companies use Neo4j, along with a vibrant community of 250,000+ developers, data scientists, and architects across the globe.

At Neo4j, we’re proud to be building the technology that powers breakthrough solutions for our customers, helping them cure diseases, fight fraud, crush pandemics, and accomplish their most ambitious missions—even if it’s getting humans to Mars. Learn more at and follow us @Neo4j.

Our Vision:

At Neo4j, we have always strived to help the world make sense of data.

As business, society and knowledge become increasingly connected, our technology promotes innovation by helping organizations to find and understand data relationships. We created, drive and lead the graph database category, and we’re disrupting how organizations leverage their data to innovate and stay competitive.

The Role:
Join our dynamic Cypher team at Neo4j, where we are at the forefront of optimizing the core codebase that receives query strings and transforms them into efficient, logically sound execution plans. This role delves deep into the heart of the database, determining the most rapid and effective means of retrieving queried data from the underlying stores and indexes of the property graph model.

As a Cypher Software Engineer, you will not only enhance and optimize the query planner and runtimes but also contribute to the development of comprehensive features that elevate the capabilities of the Cypher language and the Neo4j database. Your impact will extend across the entire codebase, from the parser to the storage files and indexes. Success in this role requires a profound understanding of Cypher, the ability to discern similarities in queries, and expertise in rewriting queries for optimal performance.

What You'll Bring:

  • Experience with performance-driven development, e.g. profiling, benchmarking, and optimizing code
  • Familiarity with Agile development processes (TDD, kanban/scrum, pair programming)
  • Knowledge in or willingness to learn Scala

Nice to also have:

  • Experience programming in Scala and/or Java
  • Understanding or previous experience with database design and implementation
  • Interest or experience in developing compilers
  • A strong foundation in algorithm design and analysis
  • Interest in exploratory learning and transferring academic research into production-grade products
  • 3+ years of experience developing high-quality, highly scalable production-level software

We don’t expect you to have experience across all these areas. We have a mix of different skills in our team. Many of our teams are spread over two or more locations so you should be comfortable working as part of a distributed team.

Why Join Neo4j?

Neo4j is, without question, the most popular graph database in the world. We have customers in every industry across the globe, and our products are a proven product/market fit. Joining our team is an opportunity to shape the future of data and analytics. Below are just a few exciting facts about Neo4j.

  • Neo4j is one of the fastest scaling technology companies in this industry. Well over $100M ARR and still rapidly growing.
  • Raised biggest round of funding in all of database history ($325M Series F).
  • Backed by world class investors like Google Ventures (GV), Neo4j has raised over $582M in funding and is currently valued at $2Bn. This puts them among the most well-funded database companies in history.
  • 75% of Fortune 100 use Neo4j with more than 800 enterprise customers including Comcast, eBay, Adobe, Lyft, UBS, IBM, Volvo Cars and many more.
  • Emil Eifrem (CEO) has built an amazing culture that prides itself on relationships, inclusiveness, innovation and customer success.
  • Countless awards in the industry. Massive Enterprises and individual developers/ data scientists love Neo4j. Strong sense of community and ecosystem is built around the platform.
  • A recent Forrester Total Economic Impact Study pegged Neo4j as delivering 417% ROI to customers.

Research shows that members of underrepresented communities are less likely to apply for jobs when they don’t meet all of the qualifications. If this is part of the reason you hesitate to apply, we’d encourage you to reconsider and give us the opportunity to review your application. At Neo4j, we are committed to building awareness and helping to improve these issues.

One of our central objectives is to provide an inclusive, diverse, and equitable workplace for everyone to develop their potential and have a positive, career-defining experience. We look forward to receiving your application.

Neo4j Values:

Neo4j is a Silicon Valley company with a Swedish soul. We foster collaboration and each of us is empowered to contribute and put our innovative stamp on projects. We hire candidates who reflect the following Neo4j core values:

(we)-[:THRIVE_IN]->(:Culture {type: [‘Open’, ‘Inclusive’]})
(we)-[:ASSUME]->(:Intent {direction:’Positive’})
(we)-[:WELCOME]->(:Discussions {nature: ‘IntellectuallyHonest’})

Neo4j is committed to protecting and respecting your privacy. Please read the privacy notice regarding Neo4j's recruitment process to understand how we will handle the personal data that you provide.

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This job is no longer accepting applications

See open jobs at Neo4j.