Sr. Software Engineer, Search Infrastructure
- Salary
- $150,000 - $400,000
- Level
- Senior
Not stated in the posting: work type, visa.
Open. First seen 2 October 2026.
About the role
SpaceXSI's standard text
SpaceX was founded under the belief that a future where humanity is out exploring the stars is fundamentally more exciting than one where we are not. Today, SpaceX is actively developing the technologies to make this possible, with the ultimate goal of making life multiplanetary and expanding consciousness to the stars.
SpaceXSI is building Super Intelligence to help humanity understand the universe. Our teams are building the full Super Intelligence stack: from our Colossus supercomputers, to Grok models, to our suite of applications, including Grok Bot, Grok Build, Grok Imagine, Grok Voice, and X. We're creating a powerful flywheel where more compute trains better models, better models power more useful products, and what we learn from people using those products shapes what we build next.
SR. SOFTWARE ENGINEER, SEARCH INFRASTRUCTURE
As a senior backend engineer, you’ll design and build scalable, high-performance systems that power subscriptions infrastructure, new monetized products, user growth, and creator monetization. You’ll work on mission-critical infrastructure that processes millions of transactions, optimizes user acquisition and retention, and enables creators to earn a living through their content. This is a unique opportunity to make a large-scale revenue impact while creating products that users and businesses love.
RESPONSIBILITIES:
- Design and build large scale search infrastructure (real-time indexing, serving, and data pipelines) that handles massive write and query loads with strict latency and reliability requirements
- Go deep into search internals (indexing, query execution, and relevance) and help shape the technical direction of the core search infrastructure
- Operate production services end to end, including monitoring, debugging, incident response, and performance optimization
- Lead and drive incident responses and recovery with your peers. Review and contribute to incident postmortems and hold a high bar for the same
BASIC QUALIFICATIONS:
- 5+ years developing large-scale infrastructure, distributed systems or experience with storage or hardware architecture
- Experience with high performance Rust, C++ or JVM-based languages
- Experience with operating system internals, filesystems, networking, or database storage engines
PREFERRED SKILLS AND EXPERIENCE:
- Hands-on experience with search and indexing technologies (Elasticsearch, Lucene, or similar) and an understanding of how they work and why
- Obsessed performance, reliability, scalability and quality
- Ability to take full ownership of problems and learn whatever is needed to solve them
- Comfortable moving quickly in a fast-paced environment with shifting priorities and tight deadlines
- Contributions to open-source search or infrastructure projects
COMPENSATION AND BENEFITS:
$150,000 - $400,000 USD
Base salary is just one part of our total rewards package at SpaceXSI, which also includes equity, comprehensive medical, vision, and dental coverage, access to a 401(k) retirement plan, short & long-term disability insurance, life insurance, and various other discounts and perks.
SpaceXSI's standard text
SpaceXSI is an equal opportunity employer. For details on data processing, view our Recruitment Privacy Notice.
What this role asks for
Particular to this role
Elasticsearch
Rare in SpaceXSI's other 163 open postings.
69% of this description is written for the role. The rest is SpaceXSI's standard text, folded away below.
Compared with SpaceXSI's other open jobs.
The team: Engineering HIRES STEADILY
This role is one of 28 open in Engineering. 3 were posted in the last 30 days and the oldest in April: a team that hires all year rather than one being built.
WHAT THE TEAM WORKS WITH, ACROSS ITS POSTINGS
Python (13 of 28), C++ (11 of 28), Rust (11 of 28), Networking (8 of 28), C (7 of 28), Golang (6 of 28), Java (6 of 28)
OTHER ROLES ON THIS TEAM
- Sr. Software Engineer, Network (C++) posted Nov 4
- Sr. Software Engineer, Linux Kernel posted Nov 4
- Senior Product Manager, Commerce Platform posted Oct 27
- Spring 2027 Software Engineering Internship/Co-op posted Oct 2
- Summer 2027 Software Engineering Internship/Co-op posted Oct 2
- Software Engineer, Evaluation Infrastructure posted Sep 30
- Network Engineer posted Sep 14
- Network Engineer posted Sep 14
- Sr. Analytics Engineer (X) posted Aug 12
- Software Engineer, X Developer Platform posted Aug 5
- Software Engineer, Linux Kernel posted Aug 3
- Software Engineer, Evals posted Jul 22
- ML Infrastructure Engineer posted Jul 22
- Software Engineer, Platform Infrastructure posted Jul 20
- Software Engineer, Network Software & Services posted Jul 15
- Software Engineer, Data Engineering (X) posted Jul 12
- Software Engineer, Network (C++) posted Jul 2
- Network Operations Technician (Starlink) posted Jun 19
- Software Engineer, Ads Product posted Jun 2
- Software Engineer, Imagine Safety posted May 31
- Sr. Maching Learning Engineer, Search Ranking posted Apr 30
- Backend Engineer, API posted Apr 24
- Software Engineer, Consumer Subscriptions posted Apr 16
- Software Engineer, X Money posted Apr 14
- Machine Learning Engineer, Ads posted Dec 3
- Software Engineer, Network Software & Services posted Oct 15
- Machine Learning Engineer, Recommendation Systems posted Apr 11
From the team and dates on SpaceXSI's own job board.
See Software Engineer salaries in the United States →
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