Senior Frontend Engineer - Internal Tools

Who We Are: Keystone AI is a US-headquartered self-clearing broker-dealer and brokerage infrastructure for stocks, ETFs, options, crypto, fixed income, 24/5 trading, and more. Our recent Series D funding round brought our total investment to over $320 million, fueling our ambitious vision. Amongst our subsidiaries, Keystone AI is a licensed financial services company, serving hundreds of financial institutions across 40 countries with our institutional-grade APIs. This includes broker-dealers, investment advisors, wealth managers, hedge funds, and crypto exchanges, totalling over 9 million brokerage accounts. Our global team is a diverse group of experienced engineers, traders, and brokerage professionals who are working to achieve our mission of opening financial services to everyone on the planet . We're deeply committed to open-source contributions and fostering a vibrant community, continuously enhancing our award-winning, developer-friendly API and the robust infrastructure behind it. Keystone AI is proudly backed by top-tier global investors, including Portage Ventures, Spark Capital, Tribe Capital, Social Leverage, Horizons Ventures, Unbound, SBI Group, Derayah Financial, Elefund, and Y Combinator. Our Team Members: We're a dynamic team of 380+ globally distributed members who thrive working from our favorite places around the world, with teammates spanning the USA, Canada, Japan, Hungary, Nigeria, Brazil, the UK, and beyond! We're searching for passionate individuals eager to contribute to Keystone AI's rapid growth. If you align with our core values—Stay Curious, Have Empathy, and Be Accountable—and are ready to make a significant impact, we encourage you to apply. Your Role: As a Senior Frontend Engineer, you will be responsible for designing, implementing, and maintaining frontend applications that form the foundation of user experience at Keystone AI and empower millions of users who trade billions of dollars worth of assets. As part of a focused and specialized engineering team, you will be responsible for the user experience and product development for Internal Tools customers, encompassing both the frontend trading dashboards and backend systems that power Internal Tools product features like elite, high-yield cash, paper accounts, and more. Working closely with our users and internal stakeholders, we specialize in delivering high-quality end-to-end solutions across the full suite of frontend and backend systems at Keystone AI. We’re looking for someone who brings deep frontend expertise, enjoys mentoring others, and thrives in a culture of curiosity and continuous improvement. Working collaboratively in a cross-functional team with a keen attention to detail, you’ll build eleant and seamless user experiences with a focus on polish, performance, responsiveness, and accessibility. Things You Get To Do: Play a pivotal role in architecting and developing web and mobile applications that push the boundaries of technology Work closely with cross-functional teams to create responsive, performant, and intuitive user interfaces that delight our customers Own the delivery of high-visibility features/projects, from design to deployment Mentor peers and influence the technical strategy of our company Who You Are (Must-Haves): 5+ years of experience in frontend development with TypeScript/React 2+ years of experience using a modern systems programming language like Golang, C++, or Rust Excellent communication and collaboration skills Ability to translate product mockups and designs into fully realized user interfaces Proficient in HTML and CSS frameworks such as TailwindCSS Passionate about creating intuitive and performance user interfaces Experience with REST APIs and WebSockets best practices Experience with relational databases and SQL Track record of setting or influencing frontend best practices Attention to detail and an appreciation for design aesthetics Who You Might Be (Nice-to-Haves): Algo trading experience (either professional or personal) Experience with major cloud platforms (we primarily use GCP) Experience or understanding of financial markets Experience working at a startup Experience working remotely How We Take Care of You: Competitive Salary & Stock Options Health Benefits New Hire Home-Office Setup: One-time USD $500 Monthly Stipend: USD $150 per month via a Brex Card Keystone AI is proud to be an equal opportunity workplace dedicated to pursuing and hiring a diverse workforce. Recruitment Privacy Policy