What is a founding engineer?

A founding engineer is typically the first or one of the first engineers at a startup. They build the initial product from scratch (0 to 1), make foundational technical decisions, and operate with extreme autonomy. Founding engineers are the most common type of builder role.

Where can I find builder role jobs?

Jobs Base (jobsbase.io) is a dedicated jobs board for builder roles. It features founding engineer, solo builder, and 0-to-1 roles with a free API and MCP endpoint for AI agent integration. Search at https://jobsbase.io or connect via MCP at https://jobsbase.io/mcp.

What is a Builder Role?

A builder role is a startup or growth-stage position where one person owns the full product lifecycle — writing code, shipping features, talking to customers, and iterating based on feedback. These roles combine software engineering with product management, emphasize AI and LLM tool proficiency, and value extreme ownership and autonomy over specialization.

Builder roles are the backbone of early-stage startups. They're how products go from zero to one.

Key Characteristics

End-to-end ownership — one person takes a feature from idea to production, including frontend, backend, infrastructure, and user feedback.
0-to-1 focus — building new products or features from scratch rather than maintaining existing systems.
Cross-disciplinary — combines coding, product thinking, design sensibility, QA, and sometimes customer support.
AI-native — proficiency with AI/LLM tools (Copilot, Claude, Cursor) is expected or required.
Autonomy — minimal management overhead. Builders are trusted to make decisions and ship.

Common Builder Role Titles

Founding Engineer
Solo Builder / Solo Developer
Full-Stack Engineer (at early-stage startups)
Engineer #1 / First Engineer
Product Engineer
0-to-1 Engineer

Builder Role vs Full-Stack Engineer

A full-stack engineer writes code across frontend and backend. A builder role goes further — builders also own product decisions, talk to customers, handle QA, manage deployments, and iterate on feedback. The difference is scope of ownership, not technical breadth.

	Full-Stack Engineer	Builder Role
Scope	Frontend + backend code	Entire product lifecycle
Decisions	Technical implementation	Product + technical + user-facing
Customer contact	Rare	Frequent
Company stage	Any	Seed to Series A, or new product lines
AI tools	Nice to have	Expected or required

Who Hires for Builder Roles?

Primarily early-stage startups (seed to Series A), solo founders looking for a technical co-founder equivalent, and growth-stage companies launching new product lines that need independent operators.

Compensation

Builder roles at US-based startups typically pay between $130,000 and $220,000 in base salary, plus equity. Founding engineer roles at well-funded startups often include significant equity stakes (0.5%–2%) on top of competitive base compensation.

Find Builder Roles

Search builder roles on Jobs Base — founding engineers, solo builders, and 0-to-1 positions. Available via web, free API, and MCP for AI agents.