Role Description The Haskell Programmer will design, install, configure, and test specialized software. Status: Full-time Location: Remote/Hybrid/MW Office Roles and Responsibilities: - Write tested high-performance, maintainable code in Haskell - Deliver working software in short sprints - Help invent novel solutions for hard problems - Help grow our engineering team - Other duties as assigned Qualifications - Bachelor's degree (B.A.) from a four-year college or university in Computer Science or related field - Two to four years related experience and/or training; or equivalent combination of education and experience Requirements - Significant experience with Haskell to build production systems or complex personal projects, or to make major OSS contributions - Skilled at working with SQL relation databases. Experience with MS SQL Server is a plus - Experience building REST API services using functional languages and design principles - Strong problem-solving skills - Strong troubleshooting skills - Ability to work in a fast-paced environment - Strong communication skills Benefits - Competitive salary - Comprehensive benefits - Casual and professional work environment - Opportunities for continuous learning and growth

• Use AI capabilities to optimize workflows, optimize efficiency, generate code and test cases, tune performance, listen to user feedback, summarize user problems, build better products, etc. • Collaborate with Product and Design teams to turn business requirements into intuitive, production-grade web and mobile apps. • Design, build, and maintain applications across Web (React/TypeScript) and Android (Kotlin/Java), delivering features to millions of global users. • Work closely with backend engineers to design scalable APIs and ensure seamless integration with high-performance systems. • Contribute to frameworks and reusable components (React, Jetpack, MVVM, Material Design), setting standards for future development. • Write clean, maintainable, and testable code, backed by strong code reviews, automated tests, and performance profiling. • Debug and solve complex technical issues, optimize performance across devices and platforms, and deliver smooth, high-quality user experiences. • Document design decisions, architecture choices, and development processes to support collaboration and scalability.

Title: UI Software Engineer, Claude.ai Consumer Product Locations: San Francisco, CA | New York City, NY | Seattle, WA About Anthropic Anthropic’s mission is to create reliable, interpretable, and steerable AI systems. We want AI to be safe and beneficial for our users and for society as a whole. Our team is a quickly growing group of committed researchers, engineers, policy experts, and business leaders working together to build beneficial AI systems. About the role: Claude.ai is one of the most-used AI products in the world, and the experience we build for our users directly shapes how people interact with AI every day. We're looking for a talented engineer to join the team that builds the consumer web app — the interfaces, interactions, and moments that turn Claude from a capable model into a product people genuinely enjoy using. This is a product engineering role first and foremost. You'll work closely with designers and product managers to bring features from concept to shipped experience, obsessing over the details that make the difference: how something feels when you first land on it, how smoothly a new interaction flows, how an interface holds up under real-world use. Great UX isn't just about how something looks — it's about how fast it feels, how reliably it works, and how well it adapts to the device and context someone is using it on. You won't need to be building backend infrastructure or platform tooling — your focus is on crafting the best possible experience for the people using Claude.ai on the web. The pace is fast, the product is evolving quickly, and the opportunity to have a visible, direct impact on how millions of people use AI is real. If you love building consumer products and care about getting the details right, this could be a great fit. Responsibilities: - Build and ship user-facing features for claude.ai's web experience, working closely with designers to bring detailed, polished interactions to life - Translate design intent into high-quality implementations — paying close attention to accessibility and the small details that add up to a great product feel - Build responsive applications that work well across devices and screen sizes, and actively care about the performance characteristics that shape how the product feels to use — latency, responsiveness, and reliability are first-class concerns, not afterthoughts - Collaborate tightly with product managers to understand user needs, shape feature scope, and make informed tradeoffs as you build - Iterate quickly based on user feedback and internal testing, improving the experience on a continuous basis - Work with the UI Platform team to consume shared components and tooling effectively, and flag gaps or pain points that would help the broader team move faster - Help maintain a high bar for code quality and consistency within the consumer product codebase You may be a good fit if you: - Have 5+ years of experience building consumer-facing web products, with a strong emphasis on UI quality and user experience - Are proficient in React, Next.js, and TypeScript, and have experience with Node.js on the backend side of the stack - Genuinely care about the user experience — not just how something looks, but how fast it loads, how reliably it works, and how it feels across devices. You think about latency and responsiveness the same way you think about design - Collaborate well with designers and product managers, and enjoy the iterative process of turning a design into something that works beautifully in the browser - Are comfortable working in a fast-moving environment where priorities shift and shipping quickly matters - Pick up slack, even if it goes outside your job description Strong candidates may also have experience with: - Accessibility best practices and building inclusive user interfaces - Performance optimization for consumer web apps — profiling, reducing bundle size, improving rendering performance, and understanding where latency comes from end-to-end - Designing and implementing responsive layouts that work well across screen sizes and devices - Working on products with real-time or streaming interactions (chat interfaces, live updates, etc.) - User research or usability testing, or a track record of incorporating user feedback into product decisions - Working on AI/ML products or in fast-moving consumer product environments Candidates need not have: - 100% of the skills needed to perform the job - Formal certifications or education credentials The annual compensation range for this role is listed below. For sales roles, the range provided is the role’s On Target Earnings ("OTE") range, meaning that the range includes both the sales commissions/sales bonuses target and annual base salary for the role. Annual Salary: $320,000 - $405,000 USD Logistics Minimum education: Bachelor’s degree or an equivalent combination of education, training, and/or experience Required field of study: A field relevant to the role as demonstrated through coursework, training, or professional experience Minimum years of experience: Years of experience required will correlate with the internal job level requirements for the position Location-based hybrid policy: Currently, we expect all staff to be in one of our offices at least 25% of the time. However, some roles may require more time in our offices. Visa sponsorship: We do sponsor visas! However, we aren't able to successfully sponsor visas for every role and every candidate. But if we make you an offer, we will make every reasonable effort to get you a visa, and we retain an immigration lawyer to help with this. We encourage you to apply even if you do not believe you meet every single qualification. Not all strong candidates will meet every single qualification as listed. Research shows that people who identify as being from underrepresented groups are more prone to experiencing imposter syndrome and doubting the strength of their candidacy, so we urge you not to exclude yourself prematurely and to submit an application if you're interested in this work. We think AI systems like the ones we're building have enormous social and ethical implications. We think this makes representation even more important, and we strive to include a range of diverse perspectives on our team. How we're different We believe that the highest-impact AI research will be big science. At Anthropic we work as a single cohesive team on just a few large-scale research efforts. And we value impact — advancing our long-term goals of steerable, trustworthy AI — rather than work on smaller and more specific puzzles. We view AI research as an empirical science, which has as much in common with physics and biology as with traditional efforts in computer science. We're an extremely collaborative group, and we host frequent research discussions to ensure that we are pursuing the highest-impact work at any given time. As such, we greatly value communication skills. The easiest way to understand our research directions is to read our recent research. This research continues many of the directions our team worked on prior to Anthropic, including: GPT-3, Circuit-Based Interpretability, Multimodal Neurons, Scaling Laws, AI & Compute, Concrete Problems in AI Safety, and Learning from Human Preferences. Come work with us! Anthropic is a public benefit corporation headquartered in San Francisco. We offer competitive compensation and benefits, optional equity donation matching, generous vacation and parental leave, flexible working hours, and a lovely office space in which to collaborate with colleagues. Guidance on Candidates' AI Usage: Learn about our policy for using AI in our application process

Develop and document critical features and applications, collaborate with product teams to define technical requirements, and ensure high-quality code through testing and process improvements to enhance user experiences.