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ASOS • London, United Kingdom

Senior Applied Diffusion Engineer

Employment type:  Full time
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Job Description

Company Description

We're ASOS, the online retailer for fashion lovers all around the world.

We exist to give our customers the confidence to be whoever they want to be, and that goes for our people too. At ASOS, you're free to be your true self without judgement, and channel your creativity into a platform used by millions.

Everyone needs some help showing up as their best self. We're Disability Confident Committed - let our Talent team know if you need any reasonable adjustments throughout the recruitment process

Job Description

The Senior Applied Diffusion Engineer will lead the development of controllable image generation systems focused on fashion, styling, and visual consistency. This role will design and productionise LoRA pipelines, outfit generation systems, virtual styling workflows, and advanced diffusion-based capabilities powering both internal creative tooling and future consumer-facing experiences.

We are building an internal AI fashion generation platform to accelerate creative production, styling workflows, and next-generation customer experiences. The platform is centered around state-of-the-art diffusion models, controllable generation pipelines, and proprietary fashion data.

Key Responsibilities

  • Design, train, and optimise LoRA and fine-tuning pipelines for fashion-specific generation tasks.
  • Develop controllable image generation systems using Flux, SDXL, ControlNet, IP-Adapter, and related tooling.
  • Build production-ready ComfyUI workflows and custom nodes.
  • Create outfit generation and visual styling pipelines grounded in ASOS product and styling data.
  • Improve generation consistency, realism, garment fidelity, and brand alignment.
  • Collaborate with Studios, Design, Marketing, and Product teams to operationalise GenAI workflows.
  • Develop evaluation frameworks for image quality, style accuracy, and model performance.
  • Work closely with platform engineers to optimise inference performance and GPU utilisation.
  • Research and prototype new approaches in multimodal AI, and fashion generation

Qualifications

  • Strong experience with PyTorch and diffusion model ecosystems.
  • Hands-on experience training LoRAs, DreamBooth models, or fine-tuning large vision models.
  • Experience with Flux, Stable Diffusion XL, Diffusers, ComfyUI, ControlNet, and IP-Adapter.
  • Strong understanding of computer vision concepts including segmentation, pose estimation, and embeddings.
  • Experience building production ML systems and inference pipelines.
  • Strong Python engineering skills.
  • Experience with GPU optimisation, CUDA fundamentals, TensorRT, or ONNX is advantageous.
  • Experience in fashion, e-commerce, creative tooling, gaming avatars, or virtual try-on is highly desirable.

Additional Information

BeneFITS’

  • Employee discount (hello ASOS discount!)
  • Employee sample sales
  • 25 days paid annual leave + an extra celebration day for a special moment
  • Discretionary bonus scheme
  • Private medical care scheme
  • Flexible benefits allowance - which you can choose to take as extra cash, or use towards other benefits
  • Opportunity for personalised learning and in-the-moment experiences that enable you to thrive and excel in your role
Apply now

Company benefits

25 days annual leave + bank holidays
401K
Accrued annual leave – Max 5 days to carry over
Adoption leave – 26 weeks enhanced pay
Annual bonus
Annual pay rises
Bike parking
Birthday off
Buy or sell annual leave
Cinema discounts
Coffee discounts
Company freebies
Compassionate leave
Critical Illness Insurance
Dental coverage
Early finish Fridays
Emergency leave
Employee assistance programme
Employee discounts
Enhanced maternity leave – 26 weeks enhanced pay
Enhanced paternity leave – 8 weeks enhanced pay
Enhanced pension match/contribution
Enhanced sick days
Enhanced sick pay
Eye Care Support
Faith rooms
Family health insurance
Fertility benefits
Financial coaching
Further education support
Gym membership
Hackathons
Health insurance
Hertility subscription
In house training
On-site catering
On-site massages
On-site workout classes
On-site yoga classes
Learning platform
Life assurance
Mental health first aiders
Mental health platform access – Access to EAP (Unum)
Mentoring
Neo-natal leave – 16 weeks leave
On-site gym
On-site wellness room
Open to compressed hours
Open to part time work for some roles
Open to part-time employees
Personal development days
Pregnancy loss leave – 10 days paid leave
Private GP service
Professional subscriptions
Referral bonus
Religious celebration leave
Restaurant discounts
Sabbaticals
Salary sacrifice
Shared parental leave – 26 weeks enhanced pay
Skilled worker visas
Study support
Teambuilding days
Time off in-lieu
Travel loan
Volunteer days
Summer hours
Secure on-site parking
Modern office
Private booths
Collaboration spaces
On-site barista
On-site shower
On-site personal trainer
Carer’s leave
Fertility treatment leave
Women’s health leave
Menopause support

Working at ASOS

Company employees:

3,000

Gender diversity (m:f):

35:65

Hiring in countries

Türkiye

United Kingdom

Office Locations

Awards & Accreditations

2nd – Most loved - Medium companies

2nd – Most loved - Medium companies

Flexa awards 2026

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