Stack Overflow
DataScientist
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optimal for Mid candidates.
“Data Scientist at Stack Overflow. Skills: machine learning, NLP, LLMs. Design, build, and deploy machine learning solutions. Improve the performance, reliability, and accuracy of large language models in production environments”
What You'll Achieve.
improve how users find and interact with information across both Stack Overflow and Stack Internal; accelerate product development and decision-making
Industry & Context.
problem-solving instincts
What They're Looking For.
Must Have
3+ years of experience building and optimizing machine learning or NLP models, analytical skills, especially when working with large or unstructured datasets
Nice to Have
PhD preferred, specific ML framework experience, cloud platform certs
What You'll Do.
and deploy machine learning solutions
Improve the performance
and accuracy of large language models in production environments
Define and track meaningful metrics
Build and maintain large-scale datasets
and experimentation frameworks
Serve as a technical thought leader
Mentor and support other data scientists
How You'll Work.
Team & Collaboration
Partner cross-functionally with Product, Engineering, and business stakeholders; contributing to a collaborative and growth-oriented team culture
Communication Scope
Excellent communication skills — able to translate technical insights into business impact
Full Job Description
Every developer has a tab open on Stack Overflow. We are one of the most popular websites in the world - a community-based space focused on increasing productivity, decreasing cycle times, accelerating time to market, and protecting institutional knowledge. Innovation is at the heart of everything we do. We embrace collaboration, transparency, and believe in leading with empathy; creating an environment where every Stacker knows they belong. We embrace that the unique contributions and points of view of all Stackers contribute to our success. We are a Best Company to Work For, in addition to being recognized for Best Company Leadership, Best Company Happiness, Best Company Perks and Benefits, Best Company Work-Life Balance, Best Company Compensation, and Best Company Outlook. We are a remote-first company with Hiring HUBs based in the US, Canada, UK, and Germany. At Stack Overflow, we help millions of developers and technologists find answers, learn new skills, and build better software every day. We’re also bringing that same trusted knowledge experience into the enterprise through Stack Internal, our AI-powered knowledge platform that helps organizations capture, share, and discover institutional knowledge more effectively. Our Data Science team plays a key role in shaping these experiences — using data, machine learning, and large language models to power smarter products and more intuitive discovery. We’re looking for a Data Scientist who’s excited about applying advanced ML and NLP techniques at scale, partnering closely with product and engineering teams, and helping define the future of knowledge discovery in the AI era. In this role, you’ll work on high-impact initiatives that improve how users find and interact with information across both Stack Overflow and Stack Internal. You’ll build and optimize machine learning systems, influence product strategy through data, and mentor other data scientists along the way. What You’ll Do Design, build, and deploy mach
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