Writer

<h2>🚀 About WRITER</h2>WRITER is where the world's leading enterprises orchestrate AI-powered work. Our vision is to expand human capacity through superintelligence. And we're proving it's possible – through powerful, trustworthy AI that unites IT and business teams together to unlock enterprise-wide transformation. With WRITER's end-to-end platform, hundreds of companies like Mars, Marriott, Uber, and Vanguard are building and deploying AI agents that are grounded in their company's data and fueled by WRITER's enterprise-grade LLMs. Valued at $1.9B and backed by industry-leading investors including Premji Invest, Radical Ventures, and ICONIQ Growth, WRITER is rapidly cementing its position as the leader in enterprise generative AI.Founded in 2020 with office hubs in San Francisco, New York City, Austin, Chicago, and London, our team thinks big and moves fast, and we're looking for smart, hardworking builders and scalers to join us on our journey to create a better future of work with AI.<div> </div><div> </div><h2>📐 About the role</h2>AI research at WRITER isn't just about publishing papers — it's about building the scientific foundation that powers some of the most ambitious enterprise AI deployments in the world. As an AI research scientist, you'll be at the center of that work. You'll drive a high-impact research agenda focused on large language models, agentic reasoning, and the system-level capabilities that make AI genuinely useful at enterprise scale. This is a rare opportunity to do research that matters twice over — advancing the field and shipping directly into products used by hundreds of thousands of people every day.We're at an inflection point. Enterprises are moving from experimenting with AI to deeply embedding it across their operations, and WRITER's models are the engine making that possible. The work you do here — on post-training, planning, multi-step reasoning, and agentic workflows — will directly shape how the next generation of enterprise AI behaves, performs, and scales. You'll have the resources, infrastructure, and cross-functional support to pursue ambitious ideas and bring them to life quickly.This role is hybrid, based out of our San Francisco or New York City hub. You'll report to our VP of AI research.*Please note: role is open to Senior, Staff, and Sr. Staff applicants<div> </div><div> </div><h2>🦸🏻‍♀️ What you'll do</h2><ul><li>Lead an independent, high-impact research agenda on large language models and agentic systems, owning projects from early hypothesis through model training, evaluation, and production deployment</li><li>Design and execute large-scale post-training experiments using supervised fine-tuning, reinforcement learning from human feedback (RLHF), RLAIF, DPO, and emerging alignment techniques — with a focus on improving multi-step reasoning, planning, and tool use in enterprise agentic workflows</li><li>Build novel evaluation benchmarks and methodologies that push beyond existing limitations, establishing rigorous measures for how well models perform on complex, real-world enterprise tasks</li><li>Develop scalable data synthesis and curation pipelines that generate the high-quality training signal driving model improvement — including LLM-as-judge frameworks, synthetic data generation, and adversarial dataset construction</li><li>Shape WRITER's model architecture and training roadmap by translating your research insights into concrete improvements to our enterprise-grade LLMs, working hand-in-hand with research engineering and product teams</li><li>Publish and present original research at top-tier venues — NeurIPS, ICLR, ICML, ACL, and others — representing WRITER at the frontier of the field and contributing to the broader scientific community</li><li>Mentor and uplevel fellow researchers and engineers on the team, helping set a high bar for scientific rigor, experimental design, and research culture</li></ul><div> </div><div> </div><h2>⭐️ What you need</h2><ul><li>7+ years of hands-on ML research experience, with deep expertise in large language model pre-training and post-training — you've trained models at scale, debugged distributed jobs, and shipped improvements that made a measurable difference</li><li>A Ph.D. in Computer Science, Machine Learning, NLP, or a related field — or equivalent demonstrated research experience with a strong portfolio of independent, published work</li><li>Expert-level knowledge of post-training methods including SFT, RLHF, RLAIF, DPO, GRPO, and related alignment and reasoning techniques, with a track record of applying them to real, production-grade systems</li><li>Strong command of Python and PyTorch (or JAX), with the engineering depth to build and scale training pipelines, evaluation infrastructure, and data synthesis workflows yourself — not just direct others to do it</li><li>A meaningful publication record at competitive ML/AI venues (NeurIPS, ICLR, ICML, ACL, EMNLP, or equivalent), evidencing your ability to originate ideas and execute on a multi-month research agenda independently</li><li>Hands-on experience designing or evaluating agentic systems — models that plan, reason through multi-step tasks, use tools, and recover gracefully from errors — with a nuanced understanding of where they break and how to fix them</li><li>The instincts and orientation that match WRITER's values: you Connect — you collaborate openly across research, engineering, and product and communicate complex ideas with clarity to both technical and non-technical audiences; you Challenge — you ask the hard questions, push back on conventional wisdom, and pursue the research directions others haven't tried yet; you Own — you drive your projects end-to-end with urgency, take accountability for results, and care deeply about the impact your work has on real customers</li></ul> 🍩 Benefits &amp; perks (US Full-time employees)<ul><li>Generous PTO, plus company holidays</li><li>Medical, dental, and vision coverage for you and your family</li><li>Paid parental leave for all parents (16 weeks)</li><li>Fertility and family planning support</li><li>Early-detection cancer testing <a target="_blank" rel="noopener noreferrer ugc" href="https://www.galleri.com/partner/writer">through Galleri</a></li><li>Flexible spending account and dependent FSA options</li><li>Health savings account for eligible plans with company contribution</li><li>Annual work-life stipends for:<ul><li>Wellness stipend for gym, massage/chiropractor, personal training, etc.</li><li>Learning and development stipend</li></ul></li><li>Company-wide off-sites and team off-sites</li><li>Competitive compensation, company stock options and 401k</li></ul>WRITER is an equal-opportunity employer and is committed to diversity. We don't make hiring or employment decisions based on race, color, religion, creed, gender, national origin, age, disability, veteran status, marital status, pregnancy, sex, gender expression or identity, sexual orientation, citizenship, or any other basis protected by applicable local, state or federal law. Under the San Francisco Fair Chance Ordinance, we will consider for employment qualified applicants with arrest and conviction records.By submitting your application on the application page, you acknowledge and agree to <a target="_blank" rel="noopener noreferrer ugc" href="https://writer.com/legal/candidate-privacy-notice/">WRITER's Global Candidate Privacy Notice</a>.

Staff AI research scientist

🚀 About WRITERWRITER is where the world's leading enterprises orchestrate AI-powered work. Our vision is to expand human capacity through superintelligence. And we're proving it's possible – through powerful, trustworthy AI that unites IT and business teams together to unlock enterprise-wide transformation. With WRITER's end-to-end platform, hundreds of companies like Mars, Marriott, Uber, and Vanguard are building and deploying AI agents that are grounded in their company's data and fueled by WRITER's enterprise-grade LLMs. Valued at $1.9B and backed by industry-leading investors including Premji Invest, Radical Ventures, and ICONIQ Growth, WRITER is rapidly cementing its position as the leader in enterprise generative AI.Founded in 2020 with office hubs in San Francisco, New York City, Seattle, Austin, Chicago, and London, our team thinks big and moves fast, and we're looking for smart, hardworking builders and scalers to join us on our journey to create a better future of work with AI.📐 About the rolexImagine stepping into a role where your code directly empowers the world's largest enterprises to safely adopt superintelligence. As a software engineer, generative ai at WRITER, you'll be at the forefront of expanding human capacity by building the secure, scalable foundation that allows our generative AI solutions to thrive in complex corporate environments. The impact of this work is massive – for example, in the consumer packaged goods industry alone, our AI adoption is driving 69% revenue increases and 72% cost reductions.This role is designed for a well-rounded engineering generalist who leans heavily into generative AI while bringing a whole-systems mindset to architectural design. If you thrive on proactivity without red tape and love owning projects from proposal to deployment, you'll shape the future of AI and contribute to a product that’s changing how the world works. This is a hybrid role based out of our San Francisco, New York City, or London hubs. You'll report to an engineering director or a senior engineering manager.* We are open to hiring for this role at multiple levels, from senior to staff software engineer, with compensation ranges scaled to match your experience and expertise.🦸🏻‍♀️ What you'll do<ul><li>Design and develop robust, secure, and scalable generative AI services and applications using Python and modern frameworks to drive enterprise-wide transformation</li><li>Build and optimize high-performance, low-latency APIs and microservices to integrate advanced AI models and sophisticated agentic workflows into our core platform</li><li>Act as a whole-systems thinker by making meaningful system design decisions and owning the architecture of core platform components from initial proposal through production deployment</li><li>Implement and maintain responsive user interfaces using technologies like React and TypeScript to deliver intuitive user experiences and bridge the gap between backend services and frontend enablement</li><li>Drive proactivity without red tape by clearly communicating changes, plans, and proposals to cross-functional teams and collaborating closely with product managers, data scientists, and DevOps engineers</li><li>Partner with DevOps teams to build continuous deployment, logging, and monitoring systems that ensure top-tier performance, security, and reliability across distributed workloads</li></ul>⭐️ What you need<ul><li>3-5+ years of hands-on experience as a software engineer with a strong emphasis on Python development in production environments</li><li>Proven expertise in building and deploying generative AI applications, leveraging LLMs, vector databases like Pinecone, Weaviate, or pgvector, and modern open-source agentic frameworks</li><li>Practical experience with microservices architecture, RESTful APIs, cloud platforms such as AWS, GCP, or Azure, and containerization with Docker and Kubernetes</li><li>Solid grasp of modern web technologies including FastAPI, Asyncio, database systems like PostgreSQL, and hands-on experience leveraging AI developer tooling like Claude, Cursor, or GitHub Copilot to accelerate your engineering workflows</li><li>Exposure to enterprise architecture including practical experience implementing IAM, SSO, SAML, OAuth, OIDC, RBAC, robust security best practices, or building services for enterprise administration and billing systems</li><li>A Connect mindset that thrives in collaborative settings where you actively engage with cross-functional teams and mentor other engineers, a Challenge spirit that drives you to tackle complex technical hurdles and proactively suggest innovative improvements, and an Own attitude where you take full accountability for delivering high-quality, resilient, and scalable code from conception to production</li></ul> 🍩 Benefits &amp; perks (US Full-time employees)<ul><li>Generous PTO, plus company holidays</li><li>Medical, dental, and vision coverage for you and your family</li><li>Paid parental leave for all parents (16 weeks)</li><li>Fertility and family planning support</li><li>Early-detection cancer testing <a target="_blank" rel="noopener noreferrer ugc" href="https://www.galleri.com/partner/writer">through Galleri</a></li><li>Flexible spending account and dependent FSA options</li><li>Health savings account for eligible plans with company contribution</li><li>Annual work-life stipends for:<ul><li>Wellness stipend for gym, massage/chiropractor, personal training, etc.</li><li>Learning and development stipend</li></ul></li><li>Company-wide off-sites and team off-sites</li><li>Competitive compensation, company stock options and 401k</li></ul>WRITER is an equal-opportunity employer and is committed to diversity. We don't make hiring or employment decisions based on race, color, religion, creed, gender, national origin, age, disability, veteran status, marital status, pregnancy, sex, gender expression or identity, sexual orientation, citizenship, or any other basis protected by applicable local, state or federal law. Under the San Francisco Fair Chance Ordinance, we will consider for employment qualified applicants with arrest and conviction records.By submitting your application on the application page, you acknowledge and agree to <a target="_blank" rel="noopener noreferrer ugc" href="https://writer.com/legal/candidate-privacy-notice/">WRITER's Global Candidate Privacy Notice</a>.

Software engineer, generative AI

🚀 About WRITERWRITER is where the world's leading enterprises orchestrate AI-powered work. Our vision is to expand human capacity through superintelligence. And we're proving it's possible – through powerful, trustworthy AI that unites IT and business teams together to unlock enterprise-wide transformation. With WRITER's end-to-end platform, hundreds of companies like Mars, Marriott, Uber, and Vanguard are building and deploying AI agents that are grounded in their company's data and fueled by WRITER's enterprise-grade LLMs. Valued at $1.9B and backed by industry-leading investors including Premji Invest, Radical Ventures, and ICONIQ Growth, WRITER is rapidly cementing its position as the leader in enterprise generative AI.Founded in 2020 with office hubs in San Francisco, New York City, Seattle, Austin, Chicago, and London, our team thinks big and moves fast, and we're looking for smart, hardworking builders and scalers to join us on our journey to create a better future of work with AI.📐 About the roleAs an AI engineer at WRITER, you'll be at the forefront of shaping how enterprises harness superintelligence. This isn't just about theory; you'll be building tangible AI solutions that power the future of work for hundreds of the world's leading companies. Your work will directly impact the performance, scalability, and ethical alignment of our cutting-edge LLMs and AI agents, enabling businesses to unlock unprecedented levels of productivity and innovation with AI that is truly grounded in their data.This role can be hybrid in our San Francisco, New York City, or Seattle hubs. You'll report to the head of AI engineering.🦸🏻‍♀️ What you'll do<ul><li>Architect, develop, and deploy high-performance, scalable AI applications into production environments, ensuring robust integrations with our end-to-end platform.</li><li>Drive the development of intelligent agents and AI-powered features, translating complex research into practical, impactful solutions for our customers.</li><li>Collaborate closely with research scientists, data scientists, and product managers to define technical requirements and deliver features that address critical business needs.</li><li>Contribute to the research and evaluation of emerging AI technologies, frameworks, and tools to maintain WRITER's leadership in the enterprise generative AI space.</li><li>Champion responsible AI practices, including bias detection, explainability, and safety alignment, making sure our AI is trustworthy and ethical.</li></ul>⭐️ What you need<ul><li>5+ years of professional experience building and deploying machine learning or AI systems in a production environment.</li><li>Proficiency in Python and experience with relevant AI/ML frameworks such as PyTorch, TensorFlow, or JAX.</li><li>A strong foundation in machine learning principles, deep learning architectures, and natural language processing, particularly with large language models.</li><li>Experience with cloud platforms (e.g., AWS, GCP, Azure) and MLOps tools for managing the AI lifecycle.</li><li>Demonstrated ability to write clean, efficient, and well-tested code for scalable software systems.</li><li>Exceptional problem-solving skills and a passion for tackling complex technical challenges with creative AI solutions.</li><li>You Connect by collaborating seamlessly across diverse teams, Challenge the status quo to innovate, and Own your projects with a commitment to impact and excellence.</li></ul> 🍩 Benefits &amp; perks (US Full-time employees)<ul><li>Generous PTO, plus company holidays</li><li>Medical, dental, and vision coverage for you and your family</li><li>Paid parental leave for all parents (16 weeks)</li><li>Fertility and family planning support</li><li>Early-detection cancer testing <a target="_blank" rel="noopener noreferrer ugc" href="https://www.galleri.com/partner/writer">through Galleri</a></li><li>Flexible spending account and dependent FSA options</li><li>Health savings account for eligible plans with company contribution</li><li>Annual work-life stipends for:<ul><li>Wellness stipend for gym, massage/chiropractor, personal training, etc.</li><li>Learning and development stipend</li></ul></li><li>Company-wide off-sites and team off-sites</li><li>Competitive compensation, company stock options and 401k</li></ul>WRITER is an equal-opportunity employer and is committed to diversity. We don't make hiring or employment decisions based on race, color, religion, creed, gender, national origin, age, disability, veteran status, marital status, pregnancy, sex, gender expression or identity, sexual orientation, citizenship, or any other basis protected by applicable local, state or federal law. Under the San Francisco Fair Chance Ordinance, we will consider for employment qualified applicants with arrest and conviction records.By submitting your application on the application page, you acknowledge and agree to <a target="_blank" rel="noopener noreferrer ugc" href="https://writer.com/legal/candidate-privacy-notice/">WRITER's Global Candidate Privacy Notice</a>.

AI engineer 

🚀 About WRITERWRITER is where the world's leading enterprises orchestrate AI-powered work. Our vision is to expand human capacity through superintelligence. And we're proving it's possible – through powerful, trustworthy AI that unites IT and business teams together to unlock enterprise-wide transformation. With WRITER's end-to-end platform, hundreds of companies like Mars, Marriott, Uber, and Vanguard are building and deploying AI agents that are grounded in their company's data and fueled by WRITER's enterprise-grade LLMs. Valued at $1.9B and backed by industry-leading investors including Premji Invest, Radical Ventures, and ICONIQ Growth, WRITER is rapidly cementing its position as the leader in enterprise generative AI.Founded in 2020 with office hubs in San Francisco, New York City, Seattle, Austin, Chicago, and London, our team thinks big and moves fast, and we're looking for smart, hardworking builders and scalers to join us on our journey to create a better future of work with AI.📐 About the roleAs an AI engineer at WRITER, you'll be at the forefront of shaping how enterprises harness superintelligence. This isn't just about theory; you'll be building tangible AI solutions that power the future of work for hundreds of the world's leading companies. Your work will directly impact the performance, scalability, and ethical alignment of our cutting-edge LLMs and AI agents, enabling businesses to unlock unprecedented levels of productivity and innovation with AI that is truly grounded in their data.This role can be hybrid in our London hub. You'll report to the head of AI engineering.🦸🏻‍♀️ What you'll do<ul><li>Architect, develop, and deploy high-performance, scalable AI applications into production environments, ensuring robust integrations with our end-to-end platform.</li><li>Drive the development of intelligent agents and AI-powered features, translating complex research into practical, impactful solutions for our customers.</li><li>Collaborate closely with research scientists, data scientists, and product managers to define technical requirements and deliver features that address critical business needs.</li><li>Contribute to the research and evaluation of emerging AI technologies, frameworks, and tools to maintain WRITER's leadership in the enterprise generative AI space.</li><li>Champion responsible AI practices, including bias detection, explainability, and safety alignment, making sure our AI is trustworthy and ethical.</li></ul>⭐️ What you need<ul><li>5+ years of professional experience building and deploying machine learning or AI systems in a production environment.</li><li>Proficiency in Python and experience with relevant AI/ML frameworks such as PyTorch, TensorFlow, or JAX.</li><li>A strong foundation in machine learning principles, deep learning architectures, and natural language processing, particularly with large language models.</li><li>Experience with cloud platforms (e.g., AWS, GCP, Azure) and MLOps tools for managing the AI lifecycle.</li><li>Demonstrated ability to write clean, efficient, and well-tested code for scalable software systems.</li><li>Exceptional problem-solving skills and a passion for tackling complex technical challenges with creative AI solutions.</li><li>You Connect by collaborating seamlessly across diverse teams, Challenge the status quo to innovate, and Own your projects with a commitment to impact and excellence.</li></ul>🍩 Benefits &amp; perks (UK full-time employees):<ul><li>Generous PTO, plus company holidays</li><li>Comprehensive medical and dental insurance</li><li>Paid parental leave for all parents (16 weeks)</li><li>Fertility and family planning support</li><li>Early-detection cancer testing <a target="_blank" rel="noopener noreferrer ugc" href="https://www.galleri.com/partner/writer">through Galleri</a></li><li>Competitive pension scheme and company contribution</li><li>Annual work-life stipends for:<ul><li>Wellness stipend for gym, massage/chiropractor, personal training, etc.</li><li>Learning and development stipend</li></ul></li><li>Company-wide off-sites and team off-sites</li><li>Competitive compensation and company stock options</li></ul>

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Staff AI research scientist

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AI engineer (UK)

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