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Role description

Applied Research Engineer

Sieve logoSieveYC W22
AI-native
TypeFull-time
SeniorityJunior
SponsorshipNo visa sponsorship
Salary$150,000–$300,000
LocationSan Francisco, CA
Engineering

About Us

Sieve is the only AI research lab exclusively focused on video data. We combine exabyte-scale video infrastructure, novel video understanding techniques, and dozens of data sources to develop datasets that push the frontier of video modeling. Video makes up 80% of internet traffic and has become the enabling digital medium powering creativity, communication, gaming, AR/VR, and robotics. Sieve exists to solve the biggest bottleneck in growth of these applications: high-quality training data.

We've partnered with top AI labs and did $XXM last quarter alone, as a team of just 15 people. We also raised our Series A last year from Tier 1 firms such as Matrix Partners, Swift Ventures, Y Combinator, and AI Grant.

About the Role

As an applied research engineer at Sieve, you’ll build high performance building blocks and large scale pipelines to understand video with high precision at internet scale. Often this involves working on ambiguous research problems and finding clever techniques to solve them. You will be working in the computer vision, audio processing, and text processing domains.

You’re likely a good fit if you’re comfortable working with models + APIs and squeezing every drop of performance out of them through clever pre/post-processing, parallelism, pipelining, inference optimization, and occasionally fine-tuning.

Requirements

  • 2+ years of experience in computer vision or audio processing

  • Strong Python developer with hands-on experience in PyTorch or similar ML frameworks

  • Excellent communication skills, especially with customers and external teams

  • Writes clean, maintainable code—bonus points for active GitHub or portfolio projects

  • Deep passion for the video domain and media technologies

  • Motivated by building end-to-end products—not just training models

  • Able to break problems down from customer level impact to necessary building blocks.

  • Bonus: Active contributor to open source projects

  • Bonus: Experience as an early hire at a startup

  • In-person at our SF HQ

Benefits

  • 401k + Full Health Insurance

  • Breakfast, Lunch, and Dinner covered and your choice of snacks

  • Ubers covered home

Relevant archetypes

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Company info

Sieve logo

Sieve

The multimodal data lab.

Sieve builds the data and environments frontier AI labs use to train the next generation of multimodal systems. AI is moving beyond chatbots into video, audio, images, software, robotics, and interactive worlds. The next generation of models will need to understand how the world looks, sounds, moves, responds, and changes over time. Progress is bottlenecked by one thing: high-quality data. Sieve brings together exabyte-scale infrastructure, novel multimodal understanding techniques, large-scale sourcing, and deep research partnerships to create datasets and environments with unmatched precision, quality, and speed. This has earned the trust of frontier AI labs, Fortune 100 companies, and fast-growing AI startups working on generative media, robotics, computer use, world models, and agentic systems.

Private companySeedYC W22
Founded2022
HQSan Francisco, United States
Unlock human wisdom
ThesisTermsPrivacy
Size
11–50 employees
IndustrySoftware Development
Funding
  • Seed · Nov 14, 2022
Investors
Y Combinator
Tech stacknext-js, prometheus, sales-navigator, golang, apollo-io, victoria-metrics, amazon-web-services, at-internet, google-cloud-platform, signupto

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