Software Development Engineer III - Opportunities Platform

About HighLevel:HighLevel is an AI-powered business operating system that gives agencies, entrepreneurs and SMBs the infrastructure to build, automate and scale. Today, HighLevel supports SMBs across 150+ countries, fueling community-driven growth rooted in real customer outcomes. To date, businesses operating on HighLevel have generated over $7 billion in ecosystem value, demonstrating the impact of shared infrastructure at scale. By centralizing conversations, automation and intelligence into one system, we help businesses move faster, reduce complexity and execute efficiently. Behind the platform, HighLevel powers more than 4 billion API hits and 2.5 billion message events daily. With 250 terabytes of distributed data, 250+ microservices and over 1 million domain names supported, our architecture is built for performance, resilience and long-term scalability. Our people With over 2,000 team members across 10+ countries, HighLevel operates as a global, remote-first organization built for speed and ownership. We value initiative, clarity and execution, creating space for ambitious people to build systems that support millions of businesses worldwide. Here, innovation thrives, ideas are celebrated and people come first, no matter where they call home. Our impact Every month, HighLevel enables more than 1.5 billion messages, 200 million leads and 20 million conversations for the more than 1 million businesses we support. Behind those numbers are real people building independence, expanding opportunity and creating measurable impact. We’re proud to be a part of that. Learn more about us on our YouTube Channel or Blog Posts   About the Opportunities Team: Opportunities is one of the most-used areas of HighLevel. This team owns the end-to-end experience for how businesses manage their pipelines and close deals.   We build: ->Kanban boards and list views ->Deal detail pages, timelines, and activity logs ->Custom filters, sorting, and pipeline configurations ->Dashboards, charts, KPIs, conversion funnels, and insights   This surface directly influences how businesses track revenue and manage sales momentum.   About the Role We’re hiring a Senior Frontend Engineer to design and build world-class CRM experiences for pipelines, deals, and opportunity analytics. You’ll work at the intersection of complex state management, high-performance UI, real-time updates, and product design. This role is ideal for someone who wants to craft smooth, intuitive, data-rich interfaces used at massive scale. Responsibilities:

Implement fast, interactive Kanban boards with smooth drag-and-drop.

Build deal detail views, timelines, logs, and complex state-driven interfaces.

Create dashboards and analytics UIs with charts, KPIs, and real-time insights.

Architect shared UI components and frontend patterns for the CRM platform.

Build scalable state management solutions (Pinia/Vuex/Redux/Zustand).

Implement virtualisation, batching, and other performance-optimisation techniques.

Work with REST endpoints, real-time streams, and event-driven state updates.

Build resilient UI flows with strong handling of loading, error, and edge states.

Ensure correctness of pipeline and deal data across every interaction

Participate in design and architecture reviews, RFCs, and long-term UI planning

Collaborate deeply with Design and Product to shape intuitive, elegant interactions

Mentor engineers on frontend patterns, state architecture, and performance tuning

Own the reliability, latency, and overall quality of all Opportunities UI surfaces

Requirements:

7+ years of frontend engineering experience building large, complex applications

Strong expertise in Vue, React, or similar frameworks (Vue 3 + Composition API preferred)

Experience with state management (Pinia, Vuex, Redux, Zustand)

Proven track record building dashboards, charting interfaces, analytics views, or data-heavy UIs

Proficiency with charting libraries (Chart.js, Recharts, ECharts, D3)

Strong performance-focused engineering skills like Virtual lists, Memoization, Rendering optimization & Batching/debouncing

Experience with real-time event streams, live data models, and WebSockets

Comfort with UI modeling concepts and handling large datasets on the frontend

Familiarity with design systems, reusable component patterns, and consistent UX principles

Excellent communication—able to turn complexity into clarity