Full Stack Engineer

Company Description:
Spark AI is building an AI research tool to help energy developers build solar farms and battery plants faster. They build AI agents that help large energy developers find and understand critical information to develop and invest in energy projects, tackling the challenge of navigating local regulations. Spark serves large development firms like Colliers Engineering, Standard Solar, and Cypress Creek Renewables. They are funded by top investors, including AI Grant (Nat Friedman and Daniel Gross), the founders of Brex, Plaid, Helioscope (acq. Aurora Solar), and more.

Role Description:
As a Full Stack Engineer at Spark AI, you will be part of a small, ambitious early team working closely with the founders (who have backgrounds at Tesla, WeaveGrid, Brex, Google, Apple) to shape the product and engineering culture. You will have a significant impact on accelerating the clean energy transition. This is an in-person role in San Francisco (5 days/week in office).

Responsibilities:
* Design and build core APIs, AI infrastructure, and data pipelines scraping millions of data points weekly.
* Own features end-to-end: from ideation with founders to design, testing, shipping, and customer feedback.
* Architect and build cutting-edge AI systems like agentic web browsing, RAG, and data extraction.
* Write both frontend (TypeScript, Next.js) and backend (Node.js, PostgreSQL) code.
* Collaborate with founders on the product roadmap.
* Engage with customers to understand the energy industry and inform product decisions.

Technical Skills:
* Proficiency with TypeScript, Next.js, Node.js, and PostgreSQL.
* Experience building APIs, data pipelines, and potentially AI systems (RAG, agents). Requires 3+ years of experience.

Ideal Candidate:
* You have 3+ years of software engineering experience.
* You love writing code but are driven by impact, making pragmatic trade-offs between perfection and speed.
* You are a self-starter who can take fuzzy goals, work independently, find solutions, and communicate effectively.
* You are interested in the business side and potentially aspire to be a founder one day.
* You thrive in a fast-paced startup environment and want to learn about the energy industry.
* You are NOT a good fit if you prioritize code perfection over speed or are uninterested in the business context of technical decisions.