Staff Performance Engineer

Role Overview

Join Ridgeline as a Staff Performance Engineer dedicated to advancing lightning-fast user experiences across complex enterprise web applications. This role focuses on optimizing front-end performance, improving client-server interactions, and leveraging data-driven insights to enhance application responsiveness and reliability on a modern investment management platform.

Main Responsibilities

• Lead strategy initiatives to elevate frontend performance across sophisticated React applications, ensuring improved scalability and responsiveness.
• Analyze and optimize browser rendering processes to enhance key user workflows.
• Identify and resolve inefficient API calls, excessive client-server communication, and frontend bottlenecks.
• Establish and track real-user performance metrics, driving continuous improvements.
• Create and refine tools for browser instrumentation, synthetic testing, profiling, and application observability.
• Design scalable performance monitoring and regression detection systems for production environments.
• Collaborate with product and platform teams to improve architecture and set frontend performance standards.
• Investigate complex production performance problems with ownership and urgency, delivering root cause solutions.
• Mentor peers and influence technical choices to boost performance, code quality, and maintainability.
• Foster a collaborative culture focused on learning, teaching, and ongoing enhancement.

Candidate Profile

• At least 8 years in frontend or application/performance engineering roles.
• Deep knowledge of browser rendering pipelines, JavaScript execution, and modern web optimization techniques.
• Hands-on experience with React or equivalent frontend frameworks, focusing on performance tuning.
• Proficient in analyzing network behaviors, caching, API patterns, and client-side bottlenecks.
• Familiar with real-user monitoring, browser profiling, synthetic tests, and observability tools.
• Strong debugging skills within modern web environments and effective communicator across engineering teams.
• Committed to technical leadership through mentorship and collaboration.
• Eager to embrace emerging technologies and develop domain expertise in complex business contexts.
• Enjoys fostering a fun and engaging workplace.

Desirable Additional Experience

• Building high-performance, data-centric browser applications (e.g., analytics, observability tools, trading systems).
• Working with client-side data and visualization frameworks such as Apache Arrow, AG Grid, DuckDB-WASM, Perspective.js, D3, Vega, ECharts.
• Optimizing large data rendering, virtualized tables, memory consumption, and client-side computations.
• Experience with synthetic monitoring, browser automation, or frontend observability tooling.
• Understanding distributed systems, event-driven, or service-oriented architectures.
• Improving performance in complex, large-scale enterprise SaaS applications.
• Knowledge of Core Web Vitals, browser networking, accessibility, and frontend quality assurance best practices.

About Ridgeline

Ridgeline is an innovative company headquartered in Lake Tahoe, with offices spanning New York, Reno, the Bay Area, and Dublin, Ireland. Recognized as a "Best Workplace for Innovators," "Technology Innovation Leader," and among the "Top 100 Software Companies," Ridgeline fosters a discrimination-free, inclusive work environment valuing ownership, growth, transparency, action, and collaboration.

Additional Information

This position is a full-time, onsite role located in Dublin, Ireland. Ridgeline adheres strictly to equal employment opportunity principles and processes candidate information in accordance with their Candidate Privacy Policy.