Founding Engineer

Lightsage; San Francisco (CA); Sur place; USD 120 000 - 200 000; Plein temps

Résumé du poste

Lightsage, based in San Francisco, CA, seeks a Founding Engineer to design, build, and scale core infrastructure powering agent-led growth for developer tools and platforms.

You will collaborate with the founders to define technical architecture, implement features, and create benchmarks and analytics to measure how agents interact with APIs, CLIs, and MCPs. This role emphasizes ownership and end-to-end delivery on-site.

Qualifications

• Ability to translate vague customer problems into shipped solutions.
• Experience in early-stage startups is a plus.
• Strong written communication for cross-functional teams.
• Familiarity with Next.js, FastAPI, Supabase, and Azure.

Responsabilités

• Design, build, and scale core infrastructure powering agent-led growth.
• Define technical architecture and data pipelines with founders.
• Create benchmarks and analytics to measure agent interactions.
• Ship end-to-end solutions from prototype to production.

Connaissances

Product/problem solving

Startup experience

Written communication

Outils

Next.js

FastAPI

Supabase

Azure

Description du poste

Company Description

Lightsage builds infrastructure for the emerging agent economy, helping organizations track, benchmark, and improve how coding agents discover and use their APIs, CLIs, and MCP integrations. The platform is used by enterprises and high-growth startups to become the default tools recommended by software agents. Lightsage focuses on agent experience and measurable impact on developer and product adoption, with more information available at lightsage.com. The team also created DevToolArena.com, a public benchmark that ranks developer tools across areas like authentication, inference, and voice using Claude Code and Codex. Joining Lightsage offers the opportunity to shape how agent-led growth and developer tooling evolve in a rapidly changing ecosystem.

Company Description

Lightsage builds infrastructure for the emerging agent economy, helping organizations track, benchmark, and improve how coding agents discover and use their APIs, CLIs, and MCP integrations. The platform is used by enterprises and high-growth startups to become the default tools recommended by software agents. Lightsage focuses on agent experience and measurable impact on developer and product adoption, with more information available at lightsage.com. The team also created DevToolArena.com, a public benchmark that ranks developer tools across areas like authentication, inference, and voice using Claude Code and Codex. Joining Lightsage offers the opportunity to shape how agent-led growth and developer tooling evolve in a rapidly changing ecosystem.

Role Description

As a Founding Engineer at Lightsage, you will design, build, and scale core infrastructure and products that power agent-led growth for developer tools and platforms. You will work closely with the founders to define technical architecture, implement new features, and create benchmarks and analytics that measure how agents interact with APIs, CLIs, and MCPs. Your day-to-day will include writing high-quality production code, building data pipelines and dashboards, integrating with third-party tools, and experimenting with agent frameworks and AI coding systems. You will collaborate directly with customers to understand their needs, refine product requirements, and ship end-to-end solutions from prototype to production.

Requirements

• Able to take a loosely defined customer or product problem and drive it to a working shipped solution
• Prior founder or early-stage startup operator experience is a plus
• Strong written communication and ability to explain technical decisions clearly
• Experience working with Next.js, FastAPI, Supabase, Microsoft Azure

This is a full-time, on-site role based in San Francisco, CA, with significant ownership, autonomy, and impact on the company’s technical direction.

Compensation Range: $120K - $200K