Staff Data Scientist

We're looking for a Staff Data Scientist to lead the technical direction, scaling, and evolution of our core AI capabilities across two tightly connected domains:

• Search, Ranking & Recommendations: advancing our multi-stage retrieval and ranking systems (Two-Tower networks, Vector Search/ANN, LTR) to optimize catalog discovery for raw physical products and designs, with a particular focus on multimodal and sequence embeddings.

• Generative AI & Visual ML: scaling our image intelligence pipeline by combining multimodal generative models with classical and deep computer vision.

You'll drive systems that generate rich features and embeddings for recommendation engines, as well as tools that help merchants with content creation, smart product delayering, and automated visual asset processing.

Your daily tasks will include:

• Leading & scaling recommendation and search systems

• Lead the architectural direction for candidate retrieval, multi-objective ranking, and learning-to-rank (LTR) models across raw product and design recommendations.

• Advance our personalization engines, incorporating sequence embeddings of merchant history, niche trends, and sales performance signals to surface the best products and designs.

• Driving AI design generation & vision pipelines

• Oversee image generation pipelines that combine LLMs/multimodal models with deep learning architectures (e.g., diffusion models, UNets, Vision Transformers) to generate high-converting designs for merchants.

• Driving end-to-end product innovation (maker focus)

• Act as a product engineer with full technical autonomy across the stack — from foundational model selection (fine-tuning, prompt engineering, self-hosting) to serving pipelines and frontend workflows.

• Technical leadership, governance & mentorship

• Define and refine online/offline evaluation frameworks (NDCG, MRR, visual quality metrics, merchant conversion uplift) and oversee our continuous A/B testing strategy.

Your qualifications:

• Experience: 8+ years of hands-on experience building, deploying, and scaling production ML systems, with a proven track record of staff-level technical leadership.

• Search & RecSys expertise: deep expertise in modern search, candidate generation, and recommendation architectures (Two-Tower models, ANN vector indexing, Transformer rerankers, learning-to-rank algorithms).

• Computer vision & generative AI expertise: hands-on experience with classical CV (OpenCV) and modern deep vision architectures (CNNs, Vision Transformers, diffusion models, multimodal LLMs/CLIP) for image processing and generative workflows.

• Closed-loop ML: a proven ability to build systems that feed downstream business outcomes (clicks, conversions, sales) back into upstream model training and generation logic.

• Technical stack: fluency in Python and the modern AI/ML stack, anchored in PyTorch for deep learning and vision models, alongside LLM orchestration and agentic frameworks (e.g., LangChain, LangGraph).

• AI-assisted workflow: comfort leveraging AI tools across the workflow — Gemini for ideation and research, alongside Claude Code and Claude Cowork for rapid prototyping, system design, and production code development.

• Product maker mindset: a proven track record of taking full technical ownership of end-to-end features.

Nice to have:

• Experience in e-commerce, two-sided marketplaces, or creator platforms.

Our Stack & Tooling:

• Deep Learning & Computer Vision: PyTorch, OpenCV, Hugging Face Transformers, Diffusers

• LLMs & Agentic Systems: LangChain, LangGraph; hosted APIs (Gemini, OpenAI) and open multimodal models (FLUX, Qwen); Claude Code and Claude Cowork for software engineering

• Search & Retrieval: Vector databases (Qdrant / Pinecone / FAISS), Two-Tower ranking, Snowflake

• Workflows, MLOps & Experimentation: Flyte for workflow orchestration; CometML for experiment tracking, model registry, and CI/CD artifact management; Amplitude for A/B testing and feature flags

What we offer:

• A global, inclusive team that’s as supportive as it is ambitious and serious about getting things done

• An opportunity to work remotely or in a modern and welcoming office in Riga

• Flexible working hours (start your day as late as 11 AM)

• Private health insurance

• 2 extra paid days off to focus on your mental or physical well-being

• 1 extra paid day off to celebrate a Birthday or any other celebration of your choice

• Internal and external learning opportunities

• Access to mentorship, internal meetups, and hackathons, both on-site and online

• Free and healthy lunch if you work from the Rīga office

• Design and order your own merch using our platforms with an employee discount

• Exciting team-building events and parties you’ll never forget!

FYUL is the engine that powers on-demand commerce at global scale. Formed in 2024 through the merger of Printful, Printify, and Snow Commerce, we bring together tech, talent, and infrastructure to help people turn ideas into beautiful products.

We're a fast-growing global company working toward powering great brands, great experiences, and great people. We are an equal-opportunity workplace. We’re committed to diversity and inclusion and make hiring decisions based solely on qualifications, merit, and work experience.