Sign up to access all features of our service.
  • Job search
  • Favorites
  • Create a CV
    New
  • Salaries
  • Subscriptions

Talent Sourcer, Expert AI Trainers

HumanSignal

Job Description

Job Description

About HumanSignal

Real-world data is the competitive edge in AI.

HumanSignal is a human data partner for companies building AI models and products. Our customers ship better AI, faster, because we partner with their researchers from real-world data creation to annotation to delivery.


We design and create datasets from scratch, recruit and manage the domain experts who evaluate model output, and run everything through our own platform, Label Studio, the open-source standard for data labeling and evaluation, used by over 1 million practitioners worldwide.


We specialize in the operationally complex: real-world data collection, multimodal pipelines, and multi-step workflows. Advanced ML and AI teams use our enterprise platform to run their own data factories, and our services team to extend their reach where in-house capacity runs out.


If you want to do work that materially shapes how the next generation of AI products gets built, we'd love to talk.

About the Role

As a Growth Associate, you'll build the expert supply side of our Data Services business. You'll source, vet, and onboard specialized annotators and performers across dozens of skill profiles and languages. Your pipeline decides how fast we can say yes to a new customer project, which makes your work a direct input to revenue.

What You'll Do
  • High touch sourcing and recruiting. Use LinkedIn Recruiter, professional communities, universities, and niche networks to find specialists: languages other than English, regional dialect speakers, designers, clinicians, and other hard-to-find profiles.
  • Scale sourcing channels. Leverage AI workflows and automation to test and scale channels that convert, from online communities to LinkedIn, while raising the quality bar and annotator experience. 
  • Establish vetting pipelines. Determine how to vet and assess annotators based on project requirements, expertise, and needs. 
  • Build relationships. Keep experts engaged between projects so our roster stays warm and staffable, not a list of cold emails.
  • Collaborate across teams. Partner with project and delivery leads to translate customer specs into candidate profiles early, so sourcing starts before the project does.
  • Drive growth. Staffed capacity is the constraint on how much work we can take. You loosen that constraint.
What We're Looking For
  • 2-5 years of experience in high-volume recruiting
  • Experience using LinkedIn Recruiter / Sales Navigator and other sourcing tools
  • Fluency building AI workflows to scale what's working and improve anntotator experience 
  • Comfort owning funnel metrics: outreach volume, response rates, conversion, time-to-fill
  • Strong written communication, responsiveness and professionalism. Most of your outreach happens over email and DMs
  • A track record in fast-paced, target-driven environments (startups, agencies, consulting, or similar)
  • Resilience, proactivity, and flexibility to adjust strategy when things aren't working or projects change course

Vacancy posted 7 days ago
Similar jobs that could be interesting for youBased on the Talent Sourcer, Expert AI Trainers in San Francisco, CA vacancy
  •  ..., correctness, and hardware-appropriateness of Neuron Kernel Interface (NKI) development tasks used to train and evaluate a frontier AI lab's models. You'll assess CUDA→NKI migration fidelity, Trainium-specific performance-optimization quality, and cross-platform numerical... 
    Suggested

    Obsidian

    San Francisco, CA
    4 days ago
  • Mercor, in collaboration with a leading AI lab, seeks experienced FP&A and treasury professionals to translate real planning and cash management work into structured training data for AI that reasons like finance teams. You will design scenarios such as budgets, rolling... 
    Suggested

    Obsidian

    San Francisco, CA
    6 days ago
  • $40 per hour

    Prolific is seeking AI Trainers with advanced SQL development skills to train and evaluate AI models. The role requires strong attention...  ...connection. Successful candidates will join Prolific as Domain Expert participants, earning approximately $40/hour for completing AI... 
    Suggested
    Remote job
    Flexible hours

    Prolific

    San Francisco, CA
    5 days ago
  • $150 per hour

    A leading AI data collection platform is seeking AI Trainers - Machine Learning Specialists to assist in training and evaluating advanced AI models. Successful candidates will complete training tasks, provide expert feedback, and help enhance AI's capabilities. This role... 
    Suggested
    Remote job
    Work from home

    Prolific

    San Francisco, CA
    3 days ago
  • $30 per hour

    A leading platform for AI training is seeking advanced Japanese speakers to join as Domain Expert participants. You will complete various AI training tasks and evaluate AI responses in Japanese. Compensation is competitive at $30 per hour, with flexible working hours from... 
    Suggested
    Remote job
    Hourly pay
    Work from home
    Flexible hours

    Prolific

    San Francisco, CA
    5 days ago
  • $30 per hour

    AI Trainer - Advanced Japanese Fluency Prolific is building the biggest pool of quality human data in the world. Over 35,000 AI developers...  ...candidates will be invited to join Prolific as a Domain Expert participant, where you’ll get paid to train and evaluate powerful... 
    Remote job
    Hourly pay
    Self employment
    Work from home
    Flexible hours

    Prolific

    San Francisco, CA
    3 days ago
  • Planet Pharma seeks an AI Trainer with a strong background in healthcare operations to train and refine AI models over a 12-week remote engagement. You will evaluate AI-generated responses within healthcare workflows such as medical coding, billing, utilization management... 
    Remote job
    Flexible hours

    Planet Pharma

    San Francisco, CA
    4 days ago
  • $293.5k

    General Information Job Title Expert Senior Manager, AI Engineering Job ID 104335 Work Areas Analytics, Data & Research, Management...  ...work environment. We hire people with exceptional talent and create an environment in which every individual can thrive... 
    Permanent employment
    Full time
    Apprenticeship
    Work at office
    Local area
    Work from home
    Home office
    3 days per week

    Bain & Company

    San Francisco, CA
    4 days ago
  • $60 - $70 per hour

     ...monitoring, inventory visibility, customer-facing analytics, and AI/ML workloads. We're trusted by teams like Substack, Alloy, and...  ...are converting and why Flag patterns in the market: where the talent is, where the competition is hiring from, what's moving people... 
    Hourly pay
    Full time
    Contract work
    Work at office
    Immediate start
    Remote work

    Artie's

    San Francisco, CA
    7 hours ago
  • Role Overview We are seeking experts in history and political science to author and review high-quality academic assessment content for an AI research initiative. You will write and verify rigorous multiple-choice questions across core history and political science domains... 
    Remote work

    Mercor

    San Francisco, CA
    6 days ago
  •  ...things they wanted to do, instead of things they had to do. Powerful AI will be the biggest lever for human choice we've ever built - but...  ...in the world before anyone else knows they exist. Map talent pools, competitive landscapes, and emerging technical communities... 
    Local area

    FluidStack

    San Francisco, CA
    4 days ago
  • $150 per hour

    A leading AI data firm is seeking qualified Lawyers to serve as AI Trainers. In this remote role, you will guide AI models using your legal expertise by completing tasks such as analyzing legal documents and providing feedback. The position offers flexible hours and competitive... 
    Remote job
    Hourly pay
    Flexible hours

    Prolific

    San Francisco, CA
    6 days ago
  • Mercor, Inc. in San Francisco seeks a Growth Associate to connect AI companies with specialized experts. This role involves sourcing top professionals, managing recruitment pipelines, and collaborating across teams to support Mercor’s expansion. The ideal candidate will... 

    Mercor, Inc.

    San Francisco, CA
    2 days ago
  • dnata Catering USA is seeking a Field Recruiter to lead full-cycle recruitment for hourly, salaried, and leadership roles. You will partner with operational leaders and the People & Culture team to forecast needs, build pipelines, and fill roles efficiently in a fast-paced...
    Hourly pay

    Dnata

    Brisbane, CA
    3 days ago
  •  ...Job Description Job Description Developer & Infrastructure Expert Role Type: Contractor Location: Remote Job Overview We are...  ...experienced Developer & Infrastructure Experts to evaluate AI-powered workflows across software development, cloud infrastructure... 
    Remote job
    For contractors

    YO AI Labs

    San Francisco, CA
    18 days ago
  • Mercor seeks an experienced kernel-evaluation engineer to assess NKI development tasks for frontier AI models. You will judge CUDA→NKI migration fidelity, Trainium-specific performance quality, and cross-platform numerical-correctness, delivering rubric-based feedback.... 

    Mercor Inc

    San Francisco, CA
    4 days ago
  •  ...hours. Responsibilities include creating, evaluating, and refining AI-generated presentations across lecture decks, course materials,...  ...visual explanations. A PhD or terminal degree with 4+ years of teaching and expert PowerPoint skills are required. #J-18808-Ljbffr Ethos
    Remote job
    Flexible hours

    Ethos

    San Francisco, CA
    4 days ago
  •  ...its customers, employees, and communities. The Role As a Product Expert, you will be the ultimate bridge between our software...  ...special need when applying for a role or in our recruitment process, please contact us at talent_****@*****.***. #J-18808-Ljbffr... 
    Work at office
    Work from home

    Veeva Systems

    San Francisco, CA
    1 day ago
  • $60k - $74k

     ...sleep well so they live well is at the core of what we do. The right mattress matters, and so does the right career. Our Sleep Experts® are at the heart of what we do: helping customers find their dream mattress and get better sleep. By joining our team, you'll get... 
    Local area

    Mattress Firm

    Daly City, CA
    3 days ago
  • $60k - $74k

     ...view the job posting, don't hesitate to get in touch with your Talent Acquisition representative .  Is your current job a nightmare...  ...mattress matters, and so does the right career. Our Sleep Experts® are at the heart of what we do: helping customers find their... 
    Local area

    Mattress Firm

    Daly City, CA
    2 days ago
  •  ...submitted via Web Search or Maps interface. The Mapping City/Country Expert will be responsible for high-impact work in improving city...  ...attention to detail. We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing... 
    Local area

    TSMG

    San Francisco, CA
    7 hours ago
  • $120k - $200k

     ...the infrastructure for abundant intelligence. We partner with top AI labs, governments, and enterprises—including Mistral, Poolside,...  ...us in building what\'s next. About The Role We\'re seeking elite talent snipers who can identify and close the top 0.01% of candidates in... 
    Local area

    Fluidstack

    San Francisco, CA
    3 days ago
  •  ...connection, and community. Join us and be part of a team that's changing lives every day! JOB SUMMARY The Sales and Service Expert (SSE) delivers an outstanding and well-rounded sales and service experience to all guests and members through a compelling approach... 
    Work experience placement
    Work at office
    Local area

    24 Hour Fitness

    San Francisco, CA
    4 days ago
  • $60 - $70 per hour

    Artie in San Francisco is seeking a contract sourcing specialist to own pipeline generation across engineering, sales, and operations. Work directly with our recruiter and founders to identify, engage, and warm up candidates you actually want to talk to. If you view sourcing...
    Hourly pay
    Contract work
    Immediate start

    Artie

    San Francisco, CA
    5 days ago
  • $40 per hour

    Overview AI Trainer - Advanced SQL Developers About Prolific Prolific is not just another player in the AI space - we are building the biggest...  ...If successful, you’ll be invited to join Prolific as a Domain Expert participant, where you’ll get paid to train and evaluate... 
    Remote job
    Self employment
    Work from home
    Flexible hours

    Prolific

    San Francisco, CA
    5 days ago
  • A leading AI research firm is seeking a Sourcing Specialist to engage top researchers and scientists in AI. This role involves building...  ...searches and crafting outreach strategies to attract specialized talent. The ideal candidate will have significant experience in sourcing... 

    OpenAI

    San Francisco, CA
    6 days ago
  • Watney Robotics is seeking a Technical Sourcer to join our growing talent function and help build one of the most exceptional teams in robotics. You’ll identify the very best talent across technical, GTM, operational, and leadership roles while supporting rapid growth... 

    Watney Robotics Inc

    San Francisco, CA
    4 days ago
  • $224.3k

    General Information Job Title Expert Manager, Product Management & Innovation Job...  ...environment. We hire people with exceptional talent and create an environment in which every...  ...bringing together Enterprise Technology and AI, Insights & Solutions (AIS) to deliver... 
    Permanent employment
    Full time
    Work at office
    Local area
    Home office
    3 days per week

    Bain & Company

    San Francisco, CA
    2 days ago
  •  ...logistics sectors as well as information and communication technology.More information at Job DescriptionPosition SummaryThe Collections Expert Analyst is going to support the Invoice to Cash end-to-end process in the Business Service Center. Learning and completing daily... 

    Robert Bosch

    San Francisco, CA
    2 days ago
  • $30 per hour

    AI Trainer - Visual & Graphic Design Expert (Remote) About Prolific Prolific is not just another player in the AI space - we are building the biggest pool of quality human data in the world. Over 35,000 AI developers, researchers, and organizations use Prolific to gather... 
    Remote job
    Work from home
    Flexible hours

    Prolific

    San Francisco, CA
    2 days ago

Do you want to receive more vacancies?

Subscribe and receive similar vacancies to Talent Sourcer, Expert AI Trainers. Be the first to apply!