Software Engineer, Full Stack at Spark | Y Combinator
About Spark
Spark (https://sparkhq.ai/) is building an advanced AI research tool that helps energy developers build solar farms and battery plants.
One of the biggest challenges in renewable energy is not construction — it’s navigating local regulations. We build AI agents that help energy developers find and understand critical information to develop and invest in solar farms.
Industry leaders like Colliers Engineering & Design, Standard Solar, and Cypress Creek Renewables use Spark to inform their investment decisions. Our customers’ energy pipelines will produce the equivalent of 60GW — enough to power tens of millions of households a year!
If you're interested in learning how the energy infrastructure works and how you can help accelerate a historical energy transition with AI and software, we’d love to hear from you!
The Team
We’re funded by top investors, including AI Grant (https://aigrant.com/) (Nat Friedman and Daniel Gross), the founders of Brex, Plaid, Helioscope (acq. Aurora Solar), and more (to be announced).
You’ll be part of a small and ambitious team that has led Engineering and Product at Tesla, WeaveGrid, Brex, and Google. As an early member of the team, you’ll work closely with the founders and shape the engineering culture.
We are an in-person company in San Francisco, CA, and we are in the office 5 days a week.
We use Typescript, NextJS, NodeJS, and Postgres.
Responsibilities
Design and build our core APIs, AI infrastructure, and data pipeline that scrapes millions of data points every week
Own features end-to-end from working on an idea with the founders to designing, testing, shipping to prod, and getting feedback from customers
Architect and build cutting-edge AI systems like agentic web browsing, RAG, and data extraction
Write both frontend and backend code
Work closely with the founders to build the product roadmap
Talk to customers and understand how the energy industry works to inform better product decisions
You’re a great fit if…
You have 3+ years of experience
You love writing code but also care about having a significant impact. Being an early engineer means making the right trade-offs between writing perfect code and “good enough” for the situation.
You believe that everything can be figured out. You can take a fuzzy goal, work independently toward a solution, and communicate effectively along the way.
You want to be a founder one day. You’ll see what it's like to start a vertical AI company (in the energy space). If there’s anything about business or tech you’re interested in, we’ll teach you.
You’re NOT a great fit if…
You want to ship perfect code. Speed is one of our main advantages as a startup. We don’t have the luxury of spending time on perfection, and we always try to do more with less.
You don’t care about the business side of things. Our technical decisions and business strategy go hand in hand. Understanding how they influence each other helps us build the right things.
