Rebuy Engine · 17 hours ago
Principal Search Relevance Engineer
United States
Full-time
Remote
Lead/Staff
$200K/yr - $260K/yr
8+ years expRebuy Engine is on a mission to revolutionize shopping with intelligent, personalized experiences. As a Principal Search Relevance Engineer, you will be the technical authority for AI Search, designing the search architecture and optimizing systems for performance and relevance.
CRME-CommerceSoftware
Responsibilities
Design the hybrid search infrastructure
Embedding model selection and fine-tuning
Architect systems that stay fast during peak e-commerce periods
Collaborate with Product Managers and Data Scientists to implement and fine-tune search relevance algorithms
Contribute significantly to Rebuy's engineering culture by establishing, documenting, and promoting best practices
Set the standards for how we build search
Participate actively in the code review process, offering insightful and actionable feedback
Qualification
Required
Bachelor's degree in Computer Science, Mathematics, Engineering, or a related field; Master's degree strongly preferred
8+ years of hands-on professional back-end software engineering experience with a proven track record of delivering complex projects
Deep Elasticsearch expertise — You've operated Elasticsearch at scale. You understand analyzers, tokenizers, scoring, and why BM25 does what it does. You've debugged relevance problems that took days to diagnose
Vector search & embeddings experience — You've shipped embedding-based search in production. You understand tradeoffs between architectures, dimensionality, quantization, and ANN algorithms. Experience fine-tuning embeddings on domain-specific data is valuable
Expert proficiency in Golang (Go) and other relevant back-end languages/environments (e.g., PHP)
ML in production — You can read papers, evaluate approaches, and implement ML systems that actually work at scale. Experience with learning-to-rank, query understanding, or recommendation systems matters
Experience with cloud computing platforms (e.g., AWS, GCP, or Azure) and familiarity with containerization (Docker, Kubernetes)
Strong knowledge of both SQL (e.g., PostgreSQL, MySQL) and NoSQL (e.g., Redis) databases, and experience optimizing complex data models
Proven experience designing and implementing scalable microservices
Understanding of data streaming technologies for real-time indexing
Prior work with A/B testing frameworks for search relevance and feature rollouts
Ability to work both independently and as part of a team
Strong communication skills and ability to break down complex problems into easy-to-understand concepts
Taste — You have opinions about what good search feels like. You've used products with exceptional search and understand why they work
Someone who carries a positive attitude, loves to be a problem-solver, is naturally self-motivated, and passionate about e-commerce
Preferred
E-commerce experience preferred
Benefits
100% free health, dental, and insurance for you and your family.
401(k) retirement plans
TFSA and RRSP retirement plans
3% contribution of your gross salary
Flexible vacation policy
Generous holiday schedule
Parental leave
Sick policy
Birthday holiday
Company
Rebuy Engine
Rebuy is a personalization engine built to increase sales by upselling, cross-selling and recommending the right products.
51-200 employees
H1B Sponsorship
Rebuy Engine has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2023 (1)
Funding
Current Stage
Growth StageTotal Funding
$21.4MKey Investors
M13
2023-02-24Series A· $17M
2021-12-15Seed· $4.4M
Leadership Team
John Erck
Co-Founder
Recent News
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