Research Engineer

doji s.a.; New York (NY); On-site; USD 150,000 - 210,000; Full time

Job summary

doji s.a. in New York City is building AI-powered fashion avatars and diffusion-model driven experiences.

We’re hiring Research Engineers to help create next generation avatar and virtual try-on models, in-person at our NYC office. As a Research Engineer you will implement cutting-edge generative AI features, build data pipelines for large image and video datasets, and improve model quality via user feedback and tuning.

Qualifications

• Hands-on experience training and fine-tuning diffusion models (MUST-HAVE)
• Experience implementing and optimizing diffusion model training pipelines
• Experience with PyTorch or JAX
• Experience in startups or as productive IC in academia/open-source
• Genuine interest in fashion, avatars, or creative expression

Responsibilities

• Implement cutting-edge generative AI features for inclusion in our product
• Build data pipelines to feed large‑scale image and video datasets into model training
• Enhance model quality through user feedback and preference‑based tuning
• Improve virtual try‑on for diverse body types, clothing styles, and aesthetic treatments
• Collaborate effectively in a shared codebase while upholding high coding standards
• Develop state‑of‑the‑art personalized try‑on capabilities in video and 3D
• Work directly with our founders to create industry‑leading technology

Skills

Diffusion models

PyTorch

JAX

Startup experience

Research engineering

Tools

Data pipelines

Job description

The Opportunity

We're reimagining fashion shopping with AI avatars. To do this we're developing cutting‑edge diffusion models and designing novel, personalized interfaces.

We're a small team of creative builders in NYC with a rare combination of taste and deep AI expertise. Previously we've shipped consumer products to millions at Apple, DeepMind, Meta, and startups. Backed by the investors behind OpenAI, Cursor, and SKIMS, our company is positioned at the intersection of AI, technology, and culture.

The Role

We're looking for Research Engineers to help us build the next generation of our avatar and virtual try‑on models. This role is in‑person from our office in NYC.

As Research Engineer you will…

• Implement cutting‑edge generative AI features for inclusion in our product

• Build data pipelines to feed large‑scale image and video datasets into model training

• Enhance model quality through user feedback and preference‑based tuning

• Improve virtual try‑on for diverse body types, clothing styles, and aesthetic treatments

• Collaborate effectively in a shared codebase while upholding high coding standards

• Develop state‑of‑the‑art personalized try‑on capabilities in video and 3D

• Work directly with our founders to create industry‑leading technology

You're a great fit if you…

• Have hands‑on experience training and fine‑tuning diffusion models (MUST‑HAVE requirement)

• Are familiar with implementing and optimizing diffusion model training pipelines

• Care deeply about craft and creating category‑defining experiences

• Have worked in rigorous, fast‑paced environments (i.e. startups) or have been a very productive IC in academia or open‑source

• Are self‑driven, high‑agency, and can learn new things quickly and deeply

• Have implemented ML papers from scratch in PyTorch or JAX

• Get excited about new ML methods, and read papers for fun

• Have instincts on how to get unstuck when things don't work

• Have genuine interest in fashion, avatars, or creative expression

Bonus if you…

• Have experience with virtual try‑on

• Have built consumer products