Senior/Staff Applied Scientist

PhotoRoom, Inc; Remote; GBP 60,000 - 80,000; Full time

Job summary

A leading technology firm in the City of London seeks a Senior/Staff Applied Scientist to own machine learning projects and collaborate with a talented team. This role requires experience with PyTorch and diffusion models, along with a pragmatic approach to product development. The company offers a competitive salary, flexible working conditions, and relocation support. Ideal for candidates seeking a dynamic and innovative environment.

Benefits

Competitive salary + Stock options/BSPCE

Flexible work arrangements

Relocation support

Quarterly retreats

Language lessons available

Qualifications

• 3+ years of experience with PyTorch, TensorFlow or Jax.
• Experience training diffusion models from scratch.
• Strong ownership and initiative; comfortable making decisions.
• Experience working in a fast‑growing startup.

Responsibilities

• Own your ML work streams or collaborate with teammates.
• Develop features and solutions from concept to production.
• Iterate quickly based on user feedback.
• Work within a multicultural team.

Skills

PyTorch

TensorFlow

Jax

Experience with diffusion models

English fluency

Job description

Senior/Staff Applied Scientist – Photoroom

About Photoroom

Photoroom launched in 2020 after being accepted into Y Combinator and has become the world's most popular AI photo editor over the past four years. Our goal is to create the technology allowing anyone to create studio-level product images in minutes.

With over 300 million downloads and processing more than 5 billion images annually, we serve individual creators and major enterprises like Amazon, DoorDash, and Decathlon through our B2C app and B2B API solutions. We’re a profitable, remote‑friendly company that has raised Series B funding and aims for 40% year‑over‑year growth. Our team of 100+ passionate builders focuses on craft, innovation, and collaboration, creating exceptional impact for entrepreneurs and businesses worldwide.

Role Overview

• You’ll be the eleventh engineer in the ML team, working alongside great talent from various backgrounds.
• You will have full ownership of your ML work streams when applicable or collaborate with teammates on big topics. You’ll have a say in how that goes.
• You will master the whole pipeline: from training models to putting them into production and monitoring performance.
• You will work on new features, new applications, and 0→1 solutions.
• You will get fast feedback from our users and iterate quickly, making decisions based on product usage.
• You will work within a small multicultural team of about 75 passionate, friendly & committed folks.

Qualifications

• 3+ years of experience with PyTorch, TensorFlow or Jax, and are willing to start or keep working with PyTorch.
• Extensive experience with diffusion models for image creation or editing; you’ve trained diffusion models from scratch, or practiced deep surgery beyond their original pre‑training.
• Pragmatic mindset, favoring speed of iteration over perfection; you leverage frameworks and libraries to avoid reinventing the wheel.
• Experience working on products requiring complex architectures.
• Strong sense of ownership and initiative; comfortable making product & technical decisions.
• Experience as part of a talented team in a fast‑growing startup.
• Curiosity, and ability to explain or learn as needed. The team values knowledge sharing and humility.
• Fluent in English (French is not required).

Hiring Process

• Screening call with our Head of AI.
• Home technical assignment, reviewed with the team.
• Culture fit interview and meet the team.
• Reference check & offer.

Benefits & Support

Competitive salary + Stock‑Options/BSPCE. Flexible work: work from anywhere in Europe within a 3‑hour flight from Paris (HQ) and visit the office monthly (fully reimbursed). Relocation support: 10k€ signing bonus, apartment finding assistance, visa procedure help. New MacBook Pro, monitor, keyboard, etc. Quarterly company retreats, weekly Happy Hour & Game Time. Language lessons (English & French) available. Office is in English; English & French lessons provided.

EEO Statement

We are committed to enabling everyone to feel included and valued at work. We believe our company and culture are strongest when composed of diverse experiences and backgrounds. That's also why we have flexible working hours, trust people to work remotely, and extended parental leave. All qualified applicants receive consideration for employment without regard to age, color, family, gender identity, marital status, national origin, physical or mental disability, sex (including pregnancy), sexual orientation, or any other characteristic protected by applicable laws.

Job details

• Seniority level: Mid‑Senior level
• Employment type: Full‑time
• Job function: Research, Analyst, Information Technology
• Industries: Technology, Information and Internet