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MongoDB

Senior Software Engineer, Query Execution

MongoDB · Ireland

Posted about 2 months ago

or apply directly on MongoDB's site. We never take the application ourselves.

Is this posting real?

This role has been open
66 days
MongoDB's roles stay open a median of 66 days
Reposted
No
Salary listed
No
0% of MongoDB's roles list one
Ghost-job risk at MongoDB
high
337 stale, 7 reposted of 411 open
Hiring momentum
575 roles opened in the last 90 days
↑ up vs. the prior 90 days
Last confirmed on the employer's board
2026-10-08

Measured from postings appearing on and disappearing from MongoDB's own greenhouse board since 2026-08-03. Full hiring picture for MongoDB.

About this role

The Senior Software Engineer for Query Execution at MongoDB will focus on developing and maintaining a distributed query system. Responsibilities include improving the MongoDB query engine, writing high-quality C++ code, implementing new features for query performance, and collaborating with peers for technical solutions. The role emphasizes hands-on software development and may involve mentoring new engineers over time.

Our read on this posting2.4out of 5
benefits
3/5
freshness
1/5
career value
4/5
role clarity
4/5
pay transparency
0/5

Scored from the posting itself — how clearly the role is described, how much it says about pay and benefits, and how recently it was listed. Not a judgement of MongoDB as an employer.

What you need

  • 5+ years of experience in systems programming
  • Hands-on experience building industrial-strength software
  • Solid computer science fundamentals, with strong competencies in data structures, algorithms, and software design/architecture
  • Experience with large code bases, preferably in C++, C, Rust or a similar compiled language
  • B.Sc in Computer Science or similar field, or equivalent practical experience
  • Interest in the theory and practice of database query engines

Nice to have

  • Experience in databases and/or data management systems
  • Hands-on experience or M.Sc./Ph.D in the domain

What you get

  • Relocation support
  • Employee affinity groups
  • Fertility assistance
  • Generous parental leave policy
  • Commitment to employee wellbeing

Worth weighing

  • No salary listed
  • Remote work available only within Ireland
  • Focus on C++ may limit exposure to other languages

Summarised from MongoDB's posting. Read the full original.

Listed by MongoDB on their greenhouse job board, last confirmed open on 2026-10-08. PitchMeAI is not the employer.

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