Senior Machine Learning Engineer (AI Training) About The Role What if your deep expertise in machine learning could directly determine how the next generation of AI models reason, plan, and solve complex problems? We're looking for Senior Machine Learning Engineers to author high-fidelity reasoning traces — the structured, step-by-step decision paths that teach LLMs how to think like experts. This isn't prompt engineering or model fine-tuning from the sidelines.

This is foundational work: you'll be crafting the cognitive blueprints that shape how frontier AI models approach real-world technical challenges. Your output becomes training data that makes AI smarter, more reliable, and more capable. Fully remote. Flexible hours. Meaningful impact.

Organization: Alignerr

Type: Hourly Contract

Location: Remote

Commitment: 10–40 hours/week What You'll Do Author complex, high-fidelity reasoning traces for sophisticated technical tasks — showing exactly how a senior engineer would plan, reason, and act

Document step-by-step decision-making processes including tool selection, problem decomposition, and validation logic

Design structured traces that capture planning, tool use, and multi-step reasoning for real-world ML scenarios

Review and mentor trace quality to ensure consistency, logical rigor, and optimal documentation of model decision paths

Develop data strategies that help LLMs navigate intricate, ambiguous, and multi-constraint problems

Contribute to the broader project mission:



making AI reasoning more reliable and trustworthy at scale Who You Are Experienced in machine learning, AI systems, or a closely related technical field — you've worked with models, not just read about them

Skilled at decomposing hard problems into clear, logical, well-documented steps — you can show your work

Familiar with LLM evaluation, training methodologies, or RLHF-adjacent workflows

Comfortable working independently and asynchronously — you're self-directed and produce consistent quality without hand-holding A precise, structured thinker who naturally documents reasoning rather than jumping to conclusions Nice to Have Prior experience with data annotation, data quality assurance, or AI evaluation pipelines

Top-tier Kaggle competition results (Grandmaster or Master level) — a solid signal of model intuition and technical depth

Hands-on experience with tool-use frameworks, agent-based reasoning, or chain-of-thought prompting

Background in research engineering, applied ML, or technical AI safety Why Join Us Work directly with teams building cutting-edge AI at leading research labs and frontier model companies

Fully remote and async — work when and where you're most productive

Freelance autonomy with the intellectual depth of senior-level technical work

Rare opportunity to influence how advanced AI models reason from the ground up

Exposure to the inner workings of LLM training and evaluation at the highest level

Potential for ongoing work and contract extension as new projects launch

📌 Senior Machine Learning Engineer (Vancouver)
🏢 Alignerr
📍 Vancouver