StarSling (YC X25)
Software Engineer (Full-Stack)
StarSling (YC X25), San Mateo, California, United States, 94409
Overview
We’re looking for a Software Engineer (Full-Stack) to join our team in the San Francisco Bay Area. We're focused on solving a big problem: how to make all the annoying tasks outside of your code editor fully agentic; everything from deployment to performance, incidents, and bugs. StarSling (YC X25) provided pay range. This range is provided by StarSling (YC X25). Your actual pay will be based on your skills and experience — talk with your recruiter to learn more. Base pay range : $150,000.00/yr - $190,000.00/yr
What You’ll Own
Event-driven backend: Architect our Node.js / Next.js / TypeScript and Supabase stack. Design schemas, event flows and ingested dev tools webhooks to power a real-time personalized engineering portal. LLM Agentic Workflows: Build a system of agents — MCP, tool use, memory, retry logic, context updates, feedback mechanisms. Agent Experience (AX): Create intuitive product interfaces for human-agent interactions. Explore and iterate with engineers to find the right interaction paradigm to productivity work with a digital co-pilot. System Design & Technical Strategy: Work directly with the founders to determine the best technical path that balances moving fast and scaling to many customers using different dev tools. Determine how we integrate and support the open-source community.
This IS for you if
You’re a full-stack 0-to-1 builder who has shipped to production, especially in rapidly shipping NextJS apps and working with event-based systems in a serverless architecture. You have a genuine curiosity about agentic product experiences and are excited about understanding the impact of AI on engineering users. You’re a previous founder or founding engineer who has built something from scratch that people use or pay for. You’re unusually obsessed with hard problems and can adapt to ambitious goals with strong judgment. You’re comfortable with ambiguity and dynamic priorities, and you know when to escalate or take decisive action. You have excellent communication and candor, and you’ll be collaborating directly with engineers on key decisions. You care about helping swamped engineers fight through the schlep of software development and stay motivated through highs and lows. You have grit and perseverance and are accustomed to choosing between hard options and pushing through.
This IS NOT for you if
You’re not based in The Bay Area (we’ll be a team of four and work closely together). You’re not willing to work six days per week (Sundays off). You’re not excited about using codegen tools like Cursor, Windsurf, Claude Code, etc. You’re not comfortable deleting 80%-90% of the code you write. You’re not comfortable with ambiguity and rapid context-switching. You don’t like candor or direct feedback. You need a well-defined structure or career ladder.
The Opportunity
Work alongside two experienced co-founders—one who built and sold a dev tools startup and one who led the engineering effort to create the same product at scale. Gain experience across the startup stack—customer support, bug fixing, user interviews, events, in addition to writing code. Be one of the first employees of the next dev tools category leader — building an engineering platform that every company in Silicon Valley will use and pay for.
Seniority level
Mid-Senior level
Employment type
Full-time
Job function
Engineering and Information Technology
Industries
Software Development
Referrals increase your chances of interviewing at StarSling (YC X25) by 2x
#J-18808-Ljbffr
We’re looking for a Software Engineer (Full-Stack) to join our team in the San Francisco Bay Area. We're focused on solving a big problem: how to make all the annoying tasks outside of your code editor fully agentic; everything from deployment to performance, incidents, and bugs. StarSling (YC X25) provided pay range. This range is provided by StarSling (YC X25). Your actual pay will be based on your skills and experience — talk with your recruiter to learn more. Base pay range : $150,000.00/yr - $190,000.00/yr
What You’ll Own
Event-driven backend: Architect our Node.js / Next.js / TypeScript and Supabase stack. Design schemas, event flows and ingested dev tools webhooks to power a real-time personalized engineering portal. LLM Agentic Workflows: Build a system of agents — MCP, tool use, memory, retry logic, context updates, feedback mechanisms. Agent Experience (AX): Create intuitive product interfaces for human-agent interactions. Explore and iterate with engineers to find the right interaction paradigm to productivity work with a digital co-pilot. System Design & Technical Strategy: Work directly with the founders to determine the best technical path that balances moving fast and scaling to many customers using different dev tools. Determine how we integrate and support the open-source community.
This IS for you if
You’re a full-stack 0-to-1 builder who has shipped to production, especially in rapidly shipping NextJS apps and working with event-based systems in a serverless architecture. You have a genuine curiosity about agentic product experiences and are excited about understanding the impact of AI on engineering users. You’re a previous founder or founding engineer who has built something from scratch that people use or pay for. You’re unusually obsessed with hard problems and can adapt to ambitious goals with strong judgment. You’re comfortable with ambiguity and dynamic priorities, and you know when to escalate or take decisive action. You have excellent communication and candor, and you’ll be collaborating directly with engineers on key decisions. You care about helping swamped engineers fight through the schlep of software development and stay motivated through highs and lows. You have grit and perseverance and are accustomed to choosing between hard options and pushing through.
This IS NOT for you if
You’re not based in The Bay Area (we’ll be a team of four and work closely together). You’re not willing to work six days per week (Sundays off). You’re not excited about using codegen tools like Cursor, Windsurf, Claude Code, etc. You’re not comfortable deleting 80%-90% of the code you write. You’re not comfortable with ambiguity and rapid context-switching. You don’t like candor or direct feedback. You need a well-defined structure or career ladder.
The Opportunity
Work alongside two experienced co-founders—one who built and sold a dev tools startup and one who led the engineering effort to create the same product at scale. Gain experience across the startup stack—customer support, bug fixing, user interviews, events, in addition to writing code. Be one of the first employees of the next dev tools category leader — building an engineering platform that every company in Silicon Valley will use and pay for.
Seniority level
Mid-Senior level
Employment type
Full-time
Job function
Engineering and Information Technology
Industries
Software Development
Referrals increase your chances of interviewing at StarSling (YC X25) by 2x
#J-18808-Ljbffr