• Designing and developing advanced UI features and dashboards (React + JavaScript / TypeScript) • Working with complex flows, graphs, visualizations, and large-scale data interactions • Owning features end-to-end: design, architecture, implementation, testing, deployment • Working across the stack: primarily frontend, with meaningful backend and server-side work • Building and maintaining server-side logic, APIs, and integrations as part of the feature lifecycle • Collaborating closely with product, backend, and data teams on requirements and solutions • Troubleshooting bugs and performance issues (roughly 50% of the workload over time) • Working in cloud-native environments (AWS) • Using AI-assisted development tools to improve productivity and quality • Contributing to code quality, performance, scalability, and maintainability

• Write and optimize complex SQL queries within Dremio to extract, transform, and analyze data across the organization • Build and support data pipelines to assist teams in migrating data into the lakehouse or surfacing it for use in external applications • Develop and deploy serverless logic using Azure Functions and maintain modern software solutions using C#, Python, or TypeScript/JavaScript • Design, develop, and maintain interactive reports and dashboards in Power BI to support business decision-making • Partner with cross-functional teams to define data requirements, troubleshoot integrations, and ensure data integrity • Participate in code reviews and the ongoing development/maintenance of both in-house and acquired software packages • Assist in automating deployment workflows using Terraform and other DevOps best practices

• Deliver high-quality, production-ready code across the .NET stack • Contribute to the design and implementation of scalable, secure, and maintainable enterprise SaaS solutions • Take ownership of complex features or components from design through to delivery • Work closely with Product Managers, Engineers, and Technical Leads (UK-based) to align technical delivery with product goals • Participate in architectural discussions and provide input into key technical decisions • Write clean, well-tested code and uphold strong engineering standards • Review code, identify issues, and contribute to improving overall code quality • Support and mentor junior engineers through collaboration and leading by example • Help improve development practices, tooling, and CI/CD processes • Balance delivery speed with enterprise-level quality, reliability, and robustness

• Work autonomously on a product built in Ruby on Rails backend and React front-end. • Build critical features and improvements for our web app, with a product-first mindset. • Work closely with Circle's leaders throughout the feature design process. • Work closely with our designers to create a world-class user experience. • Foster a bias for action, prioritizing speed of iteration without compromising on the quality of code or user experience.