Member of Technical Staff - Research
- Location
- San Francisco, CA · On-site
- Job type
- Full-time
- Level
- Mid-level
- Listed
- 23 days ago
Skills & highlights for this role
- machine learning
- reinforcement learning
- LLM post-training
Also useful
- distributed training
- reward modeling
- synthetic data
Stated benefits & perks
- Health
- Dental
- Vision
- Pto
- Parental leave
The Role
You'll turn difficult problems in real workflows into research questions, develop improvements across models and agent systems, and carry results into production. This role is for a researcher with strong engineering ability who can move between model training, experimentation, and applied AI systems, choosing the right approach for our users.
What We Are Looking for
- Deep ML foundations: You understand learning, optimization, probability, and statistics, and use that understanding to reason about model behavior and experimental results.
- Hands-on model experience: You have trained, adapted, or improved models and can explain the decisions behind your work. You bring depth in areas such as post-training, reinforcement learning, etc.
- Research judgment: You turn ambiguous problems into clear hypotheses, design experiments, and can develop new approaches.
- Strong applied judgment: You stay close to real workflows and know when to improve the model, the data, or the system around it. You weigh quality, reliability, latency, and cost.
- High agency and ownership: You help define the research direction, take responsibility for outcomes, and move from investigation to execution without waiting for a detailed plan.
- Clear collaborators: You communicate findings and uncertainty clearly, seek context from domain experts, and help research, engineering, and product make decisions.
What You'll Do
- Own applied research projects from problem definition and experiment design through implementation and production validation.
- Train and adapt models for the reasoning, retrieval, and decision-making tasks
- Develop and test improvements to agent systems, including tool use, context, memory, planning, and recovery from failures.
- Build datasets, evaluation environments, and grading methods that capture the difficulty of real workflows.
- Inspect model outputs and agent traces, identify recurring failure modes, and turn those findings into changes to training, data, or system design.
- Build the experimentation tools and pipelines needed to run, compare, and reproduce research efficiently.
- Partner with AI Strategy, product, and engineering to understand workflows and ship improvements to production.
Nice to Have
- You have carried a research idea into a product or system used in real workflows.
- You have research publications, open-source contributions, or substantial industry work in ML, LLMs, agents, or evaluation.
- You have experience with reward modeling, synthetic data, or learning from human feedback.
- You have worked with distributed training, inference optimization, or large-scale experimentation.
- You have worked in a high-growth early-stage company.
Benefits
- Competitive compensation, including meaningful equity.
- Medical, dental, and vision insurance for employees and dependents.
- Generous PTO policy.
- Paid parental leave.
Equal opportunity and legal notices
At Valkai, we are committed to fostering a diverse and inclusive workplace. We provide equal employment opportunities to all employees and applicants without regard to race, color, religion, gender, sexual orientation, gender identity or expression, national origin, age, genetic information, disability, or veteran status.
From Valkai's careers page, first listed on Rolev.ai on October 17, 2026. Rolev.ai is not the employer.
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Common questions
Where is the Member of Technical Staff - Research job at Valkai located?
This Member of Technical Staff - Research position at Valkai is located in San Francisco, CA (On-site). Always check Valkai's application page for specific state eligibility or relocation policies.
What qualifications are required for Member of Technical Staff - Research at Valkai?
For the Member of Technical Staff - Research role, Valkai highlights experience with machine learning, reinforcement learning, LLM post-training. Rolev.ai can score your existing resume against these requirements and show any skill gaps before you apply.
How do I apply for the Member of Technical Staff - Research position at Valkai?
This listing links directly to Valkai's Ashby application page. You can apply directly on Valkai's site, or use Rolev.ai to check your resume fit, generate a zero-hallucination tailored resume and cover letter for this posting, and autofill the Ashby application form in 1 click with the Rolev.ai Chrome extension. You always review the form and press Submit yourself.