Flower Labs

Founding Research Engineer – Flower Frontier Model Team

Flower Labs

full-time

Posted on:

Location Type: Remote

Location: Remote • 🇬🇧 United Kingdom

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Job Level

Senior

Tech Stack

DockerLinuxPyTorch

About the role

  • Push the boundaries of frontier AI models
  • Build category-defining models with decentralized learning methods
  • Shape the scientific foundation of frontier models
  • Collaborate with a small, high-impact team composed of both research and engineering backgrounds
  • Design and implement techniques across data curation, evals, pre-training, and post-training
  • Release the first series of models that are world-leading and open-sourced

Requirements

  • Deep understanding of recent architectures and training methodology used for LLMs and foundation models
  • Experience with pre-training or post-training (SFT, RLHF, DPO, reward modeling, or equivalent)
  • Strong grounding in optimization techniques: AdamW variants, LR scheduling, mixed precision, stabilization methods, and scaling behaviors
  • Strong experimental design skills: ablations, controlled comparisons, scaling experiments
  • Fluency in PyTorch or JAX for implementing research ideas efficiently
  • Ability to collaborate effectively with both research-oriented and engineering-oriented colleagues
  • Ability to turn conceptual research directions into runnable prototypes that integrate into the training system
  • Familiarity with common tools (Linux command line, git, Docker, …)
  • Openness to adopting new tooling
  • Strong written English
  • Open, honest and transparent communication skills
Benefits
  • Open-source AI projects
  • Work on AI that blends decentralized methods
  • Collaborative startup environment

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard skills
deep learninglarge language modelsfoundation modelspre-trainingpost-trainingoptimization techniquesexperimental designPyTorchJAX
Soft skills
collaborationcommunicationexperimental design skillsopenness to new toolingstrong written English