Weekly digest
Week of 27 October 2025
21 new roles this week across 10 companies; the biggest movers: Substrate (+5), Fractile (+4), Etched (+3).
Research
- Research Scientist — Applied Compute Platform for training, deploying, and improving custom AI agents on enterprise data
- Research Scientist, AI — Substrate Builds next-generation semiconductor fabrication technology to extend Moore's Law and reduce fab costs
ML engineering
- Member of Technical Staff, Evals Platform — Fireworks AI Inference engine for deploying and fine-tuning open-source AI models with low-latency, high-throughput serving
- Member of Technical Staff - Mid-training — xAI Develops Grok, an AI platform offering reasoning, code, voice, image, and video capabilities through a unified
- Training: ML Framework Engineer — OpenAI Develops AI systems including large language models like ChatGPT for research and commercial use
- Modelling Engineer — Fractile Builds specialized processors that fuse computation with memory to run large language models up to 25x faster
- Modelling Engineer — Fractile
Applied AI
- Forward Deployed Engineer, Lead - LLM Post-training — Reflection AI Builds open AI models that enable anyone to control and shape intelligent systems
- Applied Research Engineer — Applied Compute
Infrastructure
- Staff+ Software Engineer, Infrastructure (Distributed Systems) — Anthropic Develops Claude, an AI assistant, with research focused on AI safety and alignment
- Senior ML Compiler Engineer — Fractile
- Senior ML Compiler Engineer — Fractile
- Supercomputing Software Engineer (Taiwan) — Etched Etched.ai is a technology startup developing specialized hardware for large language model (LLM) inference
- Supercomputing Test Software Engineer (Taiwan) — Etched
Hardware
- Standard Cell Design Lead — Substrate
- Design Verification Engineer — OpenAI
- Electromechanical Engineer — Substrate
- Mechanical Engineer — Substrate
- Firmware Engineer (Taiwan) — Etched
- Digital IC Design Engineer Intern — Neuralink Develops implantable brain-computer interfaces enabling paralyzed individuals to control devices through thoug
Operations
Every line links to the role on Liftoff Jobs, and from there to the company's own board. · Past issues · Search the whole index
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