About HighLevel
HighLevel is an AI powered, all-in-one white-label sales & marketing platform that empowers agencies, entrepreneurs, and businesses to elevate their digital presence and drive growth. We are proud to support a global and growing community of over 2 million businesses, comprised of agencies, consultants, and businesses of all sizes and industries. HighLevel empowers users with all the tools needed to capture, nurture, and close new leads into repeat customers. As of mid 2025, HighLevel processes over 4 billion API hits and handles more than 2.5 billion message events every day. Our platform manages over 470 terabytes of data distributed across five databases, operates with a network of over 250 microservices, and supports over 1 million hostnames.
Our People
With over 1,500 team members across 15+ countries, we operate in a global, remote-first environment. We are building more than software; we are building a global community rooted in creativity, collaboration, and impact. We take pride in cultivating a culture where innovation thrives, ideas are celebrated, and people come first, no matter where they call home.
Our Impact
As of mid 2025, our platform powers over 1.5 billion messages, helps generate over 200 million leads, and facilitates over 20 million conversations for the more than 2 million businesses we serve each month. Behind those numbers are real people growing their companies, connecting with customers, and making their mark - and we get to help make that happen.
Learn more about us on our YouTube Channel or Blog Posts
About the Role
You’ll be joining our WordPress team, a group of dedicated engineers, creators, and support specialists who are passionate about building fast, reliable, and scalable digital experiences. Together, we help customers create high-performance websites on our managed hosting platform. Our team supports more than 20,000 businesses and delivers a seamless experience for millions of visitors every month. We collaborate closely, innovate constantly, and take pride in empowering businesses to grow online.
As a Senior Software Engineer, you’ll be contributing in shaping the experience of our platform. You’ll solve complex challenges across frontend / backend architecture, performance, micro-frontends, and distributed backend systems. You’ll contribute to overall growth and stability of the platform, collaborate closely with PMs and ensure exceptional user experiences at scale.
Responsibilities
Own and contribute to architecture and development across products, driving technical excellence in both frontend and backend systems.
Develop and optimize backend API services with test-driven development including advanced caching and messaging for reliability and scalability.
Deliver high-quality frontend experiences using modern frameworks, with strong fundamentals in component-based architectures and state management.
Integrate and support observability, logging, and monitoring to ensure platform reliability and rapid incident response.
Ensure top-tier application security and compliance, applying best practices across frontend, backend, and API layers (authentication, authorization, rate-limiting, OWASP).
Leverage LLMs and AI tools to write, refactor, test, and debug code efficiently, implementing guardrails for reliability.
Participate in design reviews, deep dives, and on-call rotations to support a culture of accountability and operational excellence.
Requirements
4+ years of hands-on software engineering experience building and scaling robust backend systems and high-performance frontend applications.
Strong backend engineering and distributed system design skills, with hands-on experience in API development, data modeling, and systems architecture using Node.js (NestJS preferred), TypeScript, MongoDB, and Redis.
Expertise in backend performance optimization, caching strategies, and event-driven architectures (e.g., Redis, Kafka, Pub/Sub).
Familiar with modern frontend frameworks ( Vue, Angular, React), advanced UI engineering patterns, and CSS libraries like Bootstrap or Tailwind CSS.
Advanced experience with complex state management libraries (e.g., Redux, Vuex, MobX) and architectural design of large-scale application state.
Proven track record of optimizing frontend performance and web vitals at scale, including experience with server-side rendering (SSR), edge, or hybrid rendering architectures.
Familiarity with frontend and backend observability - including monitoring, tracing, error tracking, and performance profiling in production (e.g., Grafana, Prometheus, Sentry, PostHog).
Strong understanding of security best practices across the full stack—including authentication, authorization, access control, secure data flow, and privacy compliance.
Excellent communication and cross-functional collaboration skills, able to drive complex initiatives, lead technical discussions, and mentor junior engineers.
EEO Statement:
At HighLevel, we value diversity. In fact, we understand it makes our organisation stronger. We are committed to inclusive hiring/promotion practices that evaluate skill sets, abilities, and qualifications without regard to any characteristic unrelated to performing the job at the highest level. Our objective is to foster an environment where really talented employees from all walks of life can be their true and whole selves, cherished and welcomed for their differences while providing excellent service to our clients and learning from one another along the way! Reasonable accommodations may be made to enable individuals with disabilities to perform essential functions.
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