
Sama is a leading enterprise AI data annotation and model evaluation company that provides a comprehensive, scalable, and ethical data pipeline for computer vision and generative AI model development. Their platform combines human-in-the-loop expertise with advanced technology to deliver high-quality annotations for images, video, 3D point clouds, and sensor data, enabling customers to accelerate AI model development up to 3x faster with a 99% first batch acceptance rate. Sama serves major industries including autonomous vehicles, retail, banking, consumer tech, and manufacturing, trusted by 40% of FAANG companies. The company emphasizes transparent pricing, enterprise-grade data security, and ethical AI supply chains, impacting over 65,000 lives through its purpose-driven business model. Sama is a Certified B Corp and recognized for its social impact and workplace excellence.

Sama is a leading enterprise AI data annotation and model evaluation company that provides a comprehensive, scalable, and ethical data pipeline for computer vision and generative AI model development. Their platform combines human-in-the-loop expertise with advanced technology to deliver high-quality annotations for images, video, 3D point clouds, and sensor data, enabling customers to accelerate AI model development up to 3x faster with a 99% first batch acceptance rate. Sama serves major industries including autonomous vehicles, retail, banking, consumer tech, and manufacturing, trusted by 40% of FAANG companies. The company emphasizes transparent pricing, enterprise-grade data security, and ethical AI supply chains, impacting over 65,000 lives through its purpose-driven business model. Sama is a Certified B Corp and recognized for its social impact and workplace excellence.
What they do: Enterprise training-data platform for annotation, evaluation and supervised fine-tuning (images, video, 3D point clouds, sensor and language data).
Mission / impact: Purpose-driven public benefit company / Certified B Corp focused on ethical AI supply chains and 'giving work, not aid'.
Funding: Total $84.8M raised; latest a $70M Series B led by CDPQ (Nov 4, 2021).
Scale: Reported ~4,222 employees; claims impacting 65,000+ lives and trusted by ~40% of FAANG.
Founded / HQ: Founded 2008 (originally Samasource); based in San Francisco, CA (per Crunchbase).
Training-data quality, scalable annotation workflows, and model evaluation for AI/ML across industries (autonomous vehicles, retail, banking, consumer tech, manufacturing).
2008
AI training data / data annotation & model evaluation
$70M
Reported as an oversubscribed round; company stated existing investors participated.
$14.8M
Reported Series A amount per TechCrunch.
“Backed by institutional and strategic investors; Series B led by CDPQ with participation from investors reported to include First Ascent Ventures, Vistara Growth and Salesforce Ventures. The Nov 2021 round was described as oversubscribed, signaling strong investor interest.”
About The Role We are looking for highly skilled AI Evaluators to support the development of advanced AI tools for grammar correction and proofreading. This project focuses on creating a rich and diverse dataset of written Spanish text, annotated and corrected by humans.
Responsibilities
Respond to a set of prompts simulating realistic business or casual communication.
Write clear, plausible short texts (3–4 sentences for business settings, 1–2 sentences for casual chat).
Generate responses with intentional but realistic grammar, spelling, and structural errors.
Review annotated message pairs (input text + corrected/proofread version) to ensure:
All grammar/spelling/preposition/punctuation errors are corrected appropriately
Meaning is preserved between input and corrected text
Error types are classified correctly
Explanations are clear and linguistically sound
Qualifications
Preferred Qualifications
About Sama Sama provides high-quality training data that powers AI technology for Fortune 2000 companies such as Google, Walmart, Ford, Microsoft, and Marriott. We’re experts in data annotation, supporting text, 2D, 3D image, video, and sensor data for machine learning algorithms and generative AI models. Sama offers the highest quality SLAs in the industry, along with cutting-edge ML-assisted annotation tools, QA processes, and security and compliance standards.
Founded in 2008 on the belief that “talent is equally distributed, but opportunity is not”, Sama is driven by the mission to expand opportunities for those who are underprivileged. As a certified B-Corp, Sama has provided worker training programs to increase economic opportunity for more than 15,000 people from underserved communities. By connecting our customers with amazing talent in East Africa, we've impacted more than 69,000 workers and their dependents.
Today, our vision is to provide data scientists, ML engineers, and data operations teams with an indispensable, integrated platform for AI data preparation, labeling, and collection.
For more information, visit www.sama.com.
More Information Can Be Found At
Our Culture Sama is quite unique. We are a technology company with a social mission. People that thrive in a high-growth environment, love working on the bleeding edge of technology, and really care about having a positive impact on the world are a great fit for the Sama culture. Our core values are One Team, One Goal - Deliver. Period. - Trust & Transparency - Customer First - Humanity.
Our Benefits Sama is proud to offer competitive compensation corresponding to market data & level of experience. Sama also offers benefits packages based on country of employment, including but not limited to medical, dental, vision, and life insurance, holiday and vacation policies, professional development stipends and a paid sabbatical program. Our Talent Acquisition team would be happy to discuss our benefits packages with you in more detail during the interview process.
At Sama, we pride ourselves in being a diverse and equal opportunity employer.