Software Development Engineer II (Fullstack) - Contacts
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 Our Team:
Our platform enables customers to create over 400 million new entities every day and
perform 35 million search operations daily across billions of records. We build and maintain highly scalable backend systems and distributed services that operate with extremely low latency and high reliability.
If you’re passionate about building scalable backend systems and solving engineering challenges at scale, you’ll find exciting opportunities on our team.
About the Role:
The Contacts Team owns several customer-facing CRM capabilities including Tags, Documents/Files, Notes, contact information, segmentation, and related experiences.
We are looking for an SDE-2 Full Stack Engineer who can work comfortably across frontend and backend systems and take ownership of features from API implementation through customer-facing UI.
You will collaborate with Product, Design, QA, and other engineering teams to deliver intuitive, scalable, and reliable CRM experiences.
Key Responsibilities:
- Develop backend services and APIs using Node.js, TypeScript and NestJS or similar frameworks.
- Design REST APIs for customer-facing product capabilities.
- Work with databases, caching, and asynchronous processing.
- Optimize APIs and queries for performance and scalability.
- Build responsive and performant interfaces using Vue.js and TypeScript.
- Develop reusable components for CRM experiences.
- Build interfaces dealing with lists, filters, search, files, notes, tags, and large datasets.
- Integrate frontend applications cleanly with backend APIs.
- Understand product requirements and translate them into technical solutions.
- Own features across database/API/UI layers.
- Participate in technical design and API-contract discussions.
- Test and deploy features and monitor their behavior in production.
- Write maintainable and testable code.
- Participate in code reviews.
- Debug frontend and backend production issues.
- Improve performance, reliability, and usability of existing features.
- Contribute to monitoring and observability.
Backend Development
Frontend Development
End-to-End Feature Ownership
Quality & Reliability
Required Skills & Experience:
- 3+ years of software development experience.
- AI First approach while Design, Development and Debugging
- Strong JavaScript/TypeScript fundamentals.
- Backend experience with Node.js.
- Frontend experience with Vue.js, React, or Angular.
- Experience designing/consuming REST APIs.
- Experience with relational and/or NoSQL databases.
- Understanding of component-based frontend architecture.
- Experience with Git, CI/CD and automated testing.
- Good understanding of frontend and backend debugging.
- Ability to independently deliver medium-complexity features.
Nice to have:
- Experience working on high-scale SaaS products.
- Vue 2/Vue 3 and Pinia/Redux/anything
- NestJS.
- MongoDB/Firestore.+
- Redis.
- Elasticsearch/OpenSearch.
- Docker/Kubernetes/GCP.
- Micro-frontend architecture.
- Event-driven systems.
- Accessibility and internationalization.
Why Join Highlevel:
- Build products used by millions of businesses worldwide.
- Solve challenging engineering problems at internet scale.
- Work with modern technologies in a highly distributed architecture.
- Be part of a remote-first engineering organization that values ownership, innovation, and continuous learning.
- Opportunity to build systems handling billions of API requests and message events every day.