Member of Technical Staff (Machine Learning Engineer, Ranking Quality - Search)
Join Perplexity AI as a Machine Learning Engineer to enhance search quality through innovative ranking solutions.
Posted by employer 1 month ago
First seen on Joblaze 1 week ago
Last verified on the company career page 13 hours ago
Skills & Technologies
Requirements
- Experience
- 5+ years
Not disclosed in this posting: compensation, work arrangement, visa sponsorship.
Joblaze summary
In this role, the Machine Learning Engineer focuses on enhancing search quality by tackling complex ranking challenges from start to finish. Key skills include expertise in neural ranking methods and production systems, alongside strong software engineering capabilities. This position is ideal for seasoned professionals with at least five years of experience in search or recommender systems, who can navigate ambiguous problems and collaborate effectively across teams. Perplexity AI emphasizes a hands-on approach to improving search infrastructure and model performance.
Joblaze insights
- Listed 10 days ago on Joblaze — tracked directly from Perplexity AI's career page.
- Perplexity AI has 116 other open roles including Senior Cinematographer, Brand Studio, Strategic Business Operations Lead, API, Member of Technical Staff (Applied AI Engineer, Agent Capabilities).
- 804 active Machine Learning roles on Joblaze right now.
- 236 active LLM roles on Joblaze right now.
- 56 active Search roles on Joblaze right now.
- Typical Machine Learning salary we track runs $145,000–$230,000 (median $188,654, across 356 roles). See Machine Learning salary trends
Quick facts
- How much experience is required?
- At least 5 years of relevant experience for this Member of Technical Staff (Machine Learning Engineer, Ranking Quality - Search) role.
- What's the tech stack?
- Joblaze extracted these technologies from the posting: LLM, Machine Learning, Neural Networks, Ranking Systems, Search.
- What seniority level is this role?
- Perplexity AI targets senior candidates for this position.
- Is this full-time or contract?
- Full-time for this Member of Technical Staff (Machine Learning Engineer, Ranking Quality - Search) role at Perplexity AI.
From the original posting
Perplexity is seeking an experienced Machine Learning Engineer to improve search quality across the middle and later stages of ranking. We are looking for a strong ranking generalist who can own ambiguous problems end to end and brings exceptional depth in either neural ranking or production ranking systems.
Responsibilities
Relentlessly push search quality forward through models, data, evaluation, infrastructure, or any other leverage available.
Own ranking-quality problems end to end: define the evaluation, identify the bottleneck, build the solution, and ship it safely.
Train and evaluate retrieval, ranking, and classification models, including neural and LLM-based approaches where appropriate.
Build and operate ranking infrastructure, including feature computation, low-latency inference, multi-stage cascades, deployment, and monitoring.
Make sound trade-offs across quality, latency, reliability, cost, and engineering complexity.
Collaborate across Data, AI, Infrastructure, and Product while retaining ownership of the final quality outcome.
Qualifications
Deep understanding of search or recommender systems and their evaluation.
Proven ownership of a large-scale production ranking system or a substantial class of quality problems.
Strong machine-learning and software-engineering skills across data, models, serving, and monitoring.
Ability to drive ambiguous, cross-team problems without continuous task decomposition.
Exceptional depth in either modern neural ranking methods or low-latency ranking systems and runtime.
Minimum 5 years of relevant industry experience.