Requirements
- 5+ years of experience in web development with a focus on infrastructure, tooling, or platform engineering
- Strong programming skills in JavaScript, TypeScript, and at least one other language
- Experience working on or closely with frontend infrastructure, CI/CD pipelines, build systems, or internal tools
- Demonstrated ability to reduce developer friction and increase engineering productivity through technical solutions
- Comfortable working in complex developer ecosystems with hundreds of developers as stakeholders (experience with Bazel or similar build tools is a plus)
- A mindset for building meta-level systems and tools that make other engineers more effective
What the job involves
- As a Senior Web Engineer, performance is your mandate. You'll set the standard for what a web-based trading platform can be — going deep on JavaScript internals, browser rendering pipelines, and real-time data optimization to make Legend the fastest, most responsive platform of its kind
- For active traders, milliseconds matter, and you'll own the work that ensures Legend never gets in their way
- This is a performance-first role. You'll lead the initiatives that make Legend faster and more efficient, while also contributing to feature development across core trading surfaces where your performance expertise has the greatest impact
- The work balances deep technical execution with meaningful cross-functional partnership
- Lead web performance across Legend — profiling, diagnosing, and shipping measurable improvements to speed, responsiveness, and runtime efficiency platform-wide
- Go deep on JavaScript internals, browser rendering pipelines, and real-time data handling to deliver a best-in-class experience for active traders
- Build and optimize high-frequency, real-time UI components that handle streaming market data without compromising frame rate or user experience
- Establish performance benchmarks and monitoring systems that create a repeatable, lasting standard for the team
- Drive a performance-first culture through code reviews, technical documentation, and engineering standards
- Contribute to end-to-end feature development across Legend's core trading surfaces, applying your performance expertise where it matters most
- Partner with product, design, and backend engineers to deliver polished, reliable experiences at scale
- Participate in roadmap planning and help scope technical work, balancing feature delivery with ongoing platform health