Vetto is a global platform that connects top-tier professionals to strategic Artificial Intelligence projects around the world. Our mission is to build trust, quality, and long-term value within the AI ecosystem, for both exceptional talent and companies operating at the forefront of technology.
Post-Training Research Scientist
Location
CET + + 1 moreAll locations: CET + | 3 HOURS
Posted
8 days ago
Salary
0
Seniority
Mid Level
Job Description
Post-Training Research Scientist
Vetto
Role Description This role sits at the heart of Vetto’s mission: using high-quality human data to build AI systems that make the world better. You’ll take raw expert signals and turn it into tangible model improvement, experimenting rapidly and carving new paths in post-training. With full autonomy and no production constraints, you’ll have the freedom to try unconventional ideas and see their impact quickly. Key Responsibilities - Design and run post-training experiments on frontier and open-weight LLMs (SFT, preference-based methods, rubric-driven training) - Translate raw annotation artifacts (multi-step solutions, evaluations, adversarial prompts) into training-ready datasets - Prototype new reward signals beyond pairwise preferences (rubrics, constraints, structured critics) - Analyze failure modes; propose data-centric fixes (sampling, curriculum, counterfactuals) - Build lightweight training/eval pipelines; iterate quickly - Produce short internal memos: what worked, what didn’t, why Qualifications - PhD (or equivalent experience) in ML/AI, applied math, stats, or adjacent - Hands-on experience with LLM post-training (at least one of SFT/DPO/RLHF/RLVR) - Solid Python + PyTorch/JAX; comfortable with training infra basics - Fluent English Preferred Qualification - Worked with rubric-based evaluation or tool-augmented tasks - Experience mixing synthetic and human data - Familiarity with failure analysis and dataset audits Work Model We operate remote-first. We focus on outcomes, not where the work is done. To support flexibility and personal choice, we maintain offices in select locations as an optional resource for the team. Location Flexible (EU-friendly time zones preferred) Type Full-time or long-term contract Equal Employment Opportunity Vetto is proud to be an equal opportunity employer and values diversity at our company. We do not discriminate on the basis of race, color, religion, national origin, sex, sexual orientation, gender identity, age, disability, veteran status, or any other protected characteristic.
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