June 18, 2026
Staff AI research scientist
Senior • Hybrid
234,300 - 296,004 USD/yr
Seattle, WA , +2
About the role
AI research at WRITER isn't just about publishing papers — it's about building the scientific foundation that powers ambitious enterprise AI deployments. As a Staff AI Research Scientist, you'll drive a high-impact research agenda focused on large language models, agentic reasoning, and system-level capabilities that make AI useful at enterprise scale. Your work will advance the field while shipping directly into products used by hundreds of thousands of people.
You will work on post-training, planning, multi-step reasoning, and agentic workflows that shape how enterprise AI behaves, performs, and scales. The role is hybrid, based in San Francisco or New York City, reporting to the VP of AI Research.
What you'll do
- Lead an independent, high-impact research agenda on large language models and agentic systems, owning projects from hypothesis through training, evaluation, and production deployment
- Design and execute large-scale post-training experiments using supervised fine-tuning, reinforcement learning from human feedback (RLHF), RLAIF, DPO, and emerging alignment techniques
- Improve multi-step reasoning, planning, and tool use in enterprise agentic workflows
- Build novel evaluation benchmarks and methodologies for complex enterprise tasks
- Develop scalable data synthesis and curation pipelines, including LLM-as-judge frameworks, synthetic data generation, and adversarial dataset construction
- Translate research insights into improvements to enterprise-grade LLMs in collaboration with research engineering and product teams
- Publish and present original research at top-tier venues such as NeurIPS, ICLR, ICML, and ACL
- Mentor researchers and engineers, maintaining high standards for scientific rigor and experimental design
What you need
- 7+ years of hands-on ML research experience
- Deep expertise in large language model pre-training and post-training
- Experience training models at scale and debugging distributed jobs
- Expert knowledge of SFT, RLHF, RLAIF, DPO, GRPO, and related alignment techniques
- Strong command of Python and PyTorch (or JAX)
- Experience building scalable training pipelines, evaluation infrastructure, and data synthesis workflows
- Publication record at top-tier ML/AI conferences (NeurIPS, ICLR, ICML, ACL, EMNLP or equivalent)
- Hands-on experience designing or evaluating agentic systems with multi-step reasoning and tool use
- PhD in Computer Science, Machine Learning, NLP, or related field, or equivalent research experience
Benefits & perks (US Full-time employees)
- Generous PTO and company holidays
- Medical, dental, and vision coverage
- Paid parental leave (16 weeks)
- Fertility and family planning support
- Early-detection cancer testing through Galleri
- Flexible spending accounts and health savings account with company contribution
- Annual wellness and learning stipends
- Company-wide and team off-sites
- Competitive compensation, stock options, and 401k
Compensation Range: $234.3K - $296K
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21,000 - 36,000 PLN
🏢 Summary: Senior AI Engineer role focused on building agentic conversational systems for recruiting, leveraging large language models and advanced NLP to create intelligent, goal-driven AI assistants. The position involves designing, developing, and deploying scalable ML pipelines and autonomous AI workflows in production. The role combines hands-on ML engineering with technical leadership in a global, cross-functional environment. 🗂️ Requirements: BSc or MSc in Computer Science, Machine Learning, AI, NLP or related field or equivalent experience, 5+ years of experience developing and deploying machine learning systems in production, Proven expertise in NLP techniques, LLM fine-tuning and model evaluation, Strong proficiency with deep learning frameworks, Advanced Python programming skills, Experience designing and maintaining end-to-end ML pipelines from data ingestion to deployment, Fluency in English, written and spoken 📃 Skills: Python, PyTorch, TensorFlow, scikit-learn, HuggingFace, NLP, LLM, MachineLearning, DeepLearning, MLOps, DataPipelines 🏢 Description: Company Description 🚀 SmartRecruiters transforms hiring for the world’s leading enterprises. We deliver an AI-powered hiring platform built for global scale, automating and optimizing the entire talent acquisition process. More than 4,000 companies, including LinkedIn, McDonald's, VISA, CD Projekt Red, Allegro rely on SmartRecruiters to build winning teams. 🚀 In 2025, SmartRecruiters joined SAP, the global leader in enterprise applications. Together, we are accelerating the reinvention of hiring by combining AI innovation with the scale and resources of SAP’s ecosystem. We designed our R&D structure based on the empowered product teams model. It means our teams are responsible for business outcomes and have autonomy in solving problems in the way that “customers love yet work for the business” (yes, we are heavily influenced by this and that ). Job Description We are looking for a Senior AI Engineer to join our Chat Group, where we’re building the next generation of intelligent conversational systems for the recruiting industry. Our mission is bold yet simple: boost the efficiency of recruiting and hiring teams and deliver the most personalized experience ever - powered by cutting-edge ML, NLP, and agentic AI You’ll play a central role in designing and developing agentic workflows, where autonomous AI agents collaborate, reason, and act to deliver intelligent and context-aware recruiting experiences at scale . At SmartRecruiters, you’ll be part of a global, high-impact team shaping how people connect with jobs.You’ll work with passionate peers across Germany, Poland, the UK, and the US - in a culture that values autonomy, innovation, and measurable outcomes. We’re not just building chat systems - we’re building the AI recruiting assistants of the future. What You’ll Do: Architect and build agentic workflows that combine large language models, reasoning components, and data pipelines to create adaptive, goal-driven conversational systems Lead the design and development of advanced ML/NLP products, from ideation to production - including model training, evaluation, optimization, and deployment Drive experimentation with new approaches for agentic reasoning, coordination, and autonomous system design Collaborate closely with product and engineering teams to integrate intelligent agents into real-world recruiting workflows Guide technical decisions, mentor other engineers, and help define best practices for scalable, maintainable ML systems Contribute to the evolution of our NLP and conversational intelligence stack, focusing on reliability, personalization, and user impact Proactively identify opportunities to automate, improve, and innovate within our chat-based ecosystem Qualifications: BSc or MSc in Computer Science, Machine Learning, AI, NLP, or a related technical field - or equivalent practical experience 5+ years of experience developing and deploying machine learning systems in production Proven expertise in NLP techniques, LLM fine-tuning, and model evaluation Strong proficiency with deep learning frameworks (e.g., PyTorch, TensorFlow) and ML tools (e.g., scikit-learn, Hugging Face) Advanced Python programming skills and solid software engineering fundamentals Experience designing and maintaining end-to-end ML pipelines, from data ingestion to deployment Hands-on experience with agentic workflows or building autonomous AI systems is a major plus Familiarity with chatbots, conversational AI, or multi-agent systems is strongly preferred Experience with data quality management, evaluation metrics, or observability in ML systems is a plus Strong analytical thinking, creativity, and an ownership mindset Excellent communication and collaboration skills in a cross-functional, international environment Fluency in English, both written and spoken Benefits: We support 100% remote work with Wi-Fi reimbursement and an additional stipend for the equipment (the MacBook laptop is provided by us) Unlimited vacation days (yes - it's really unlimited) Private Medical Care for you and your dependents (Luxmed) Wellness Programme (Multisport Card and even more) Company wide shutdowns in August and around Christmas Additional information SmartRecruiters is proud to be an Equal Employment Opportunity and Affirmative Action employer. We do not discriminate based on race, religion, color, national origin, gender (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, gender expression, age, status as a protected veteran, status as an individual with a disability, or other applicable legally protected characteristics.
