HighLevel is an AI-powered business operating system that provides infrastructure for agencies, entrepreneurs, and SMBs to build, automate, and scale their operations. The company supports over 1 million businesses across 150+ countries, enabling billions of API hits, message events, and conversations daily. As a global, remote-first organization with 2,000+ team members, HighLevel values initiative, clarity, and execution, fostering innovation and impact at scale.
The Lead Engineer, Workflow Builder DSL role focuses on defining and enforcing the data-layer grammar that powers HighLevel’s automation workflows. The mission is to ensure workflows are valid by construction, programmatically safe, and free from corruption through strict contracts, semantic validation, static analysis, and high-coverage testing. The role involves owning the canonical Workflow DSL, guaranteeing predictability, version safety, and reliability across all workflow creation paths.
Responsibilities
- Define the DSL: Design and maintain the canonical syntax and semantics for workflows
- Schema authority: Own JSON Schemas and TypeScript types for validation, linting, and generation
- Programmatic CRUD: Design contracts for safe workflow creation via public and internal APIs
- Validation layer: Implement semantic validators (current POC in Zod; open to alternatives)
- Linting & codemods: Ship tools that enforce structure guardrails and auto-repair common errors
- Testing discipline: Establish unit, integration, and golden tests for workflow creation paths
- Static analysis: Add graph checks for loops, dangling nodes, and invalid edges
- Cross-team contracts: Define interfaces with Engine and Snapshot for schema exchange and validation
- Operational ownership: Monitor DSL validation services; ensure 99.9% availability and low error rate
Requirements
- 7+ years building and owning complex backend systems
- Deep experience with typed DSLs, ASTs, or schema-driven architectures
- Fluent in TypeScript and validation frameworks (Zod, Ajv, or JSON Schema)
- Proven history designing public or versioned APIs
- Strong testing discipline and data-integrity mindset
- Comfortable owning production services and reliability metrics
Nice to have
- Compiler/graph background
- Schema evolution work
- Tooling for developer productivity
Additional details
- HighLevel supports SMBs across 150+ countries, fueling community-driven growth rooted in real customer outcomes
- Businesses operating on HighLevel have generated over $7 billion in ecosystem value
- HighLevel powers more than 4 billion API hits and 2.5 billion message events daily
- Architecture includes 250 terabytes of distributed data, 250+ microservices, and over 1 million domain names supported
- HighLevel enables more than 1.5 billion messages, 200 million leads, and 20 million conversations monthly for over 1 million businesses
- The company operates as a global, remote-first organization with over 2,000 team members across 10+ countries
- HighLevel values initiative, clarity, and execution, creating space for ambitious people to build systems that support millions of businesses worldwide
- EEO Statement: The company is an Equal Opportunity Employer. As an employer subject to affirmative action regulations, we invite you to voluntarily provide the following demographic information. This information is used solely for compliance with government recordkeeping, reporting, and other legal requirements. Providing this information is voluntary and refusal to do so will not affect your application status. This data will be kept separate from your application and will not be used in the hiring decision.
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- Originally posted on Himalayas
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