Jobs with Startups
JobsStartupsInvestorsMCP
JobsSieve

Applied Research Engineer

Sieve logo

Sieve

B2B

Applied Research Engineer

San Francisco
On-site
Full-time
Posted Apr 26, 2025
Apply on company site

Opens the original job posting

Engineering
On-site

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

Apply for this role
Sieve logo

Sieve

Company profile

Video datasets for frontier AI

View Sieve

Headquarters

San Francisco, CA, USA

Team size

11-50

Keep exploring

More roles at Sieve

View all roles

Growth Operations Lead

Product · San Francisco; San Francisco, California, United States

Business Operations

Business Operations · San Francisco; San Francisco, California, United States

Business Development

GTM · San Francisco; San Francisco, California, United States

Growth Associate

Business Operations · India

Member of Technical Staff, Machine Learning

Engineering · San Francisco

Jobs with Startups © 2026

Browse startupsBrowse jobsMCP guideAboutPowered by Supabase