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StarSling (YC X25) · 2 months ago

Founding Software Engineer (Full-Stack)

San Mateo, CA

Full-time

Onsite

Senior Level

$150K/yr - $190K/yr

StarSling is a startup focused on enhancing software development productivity through innovative tools. They are seeking a Founding Software Engineer (Full-Stack) to architect and build a personalized engineering portal and develop agentic workflows, working closely with the co-founders.

Artificial Intelligence (AI)Developer APIsDeveloper ToolsDevOps

No H1B

U.S. Citizen Only

Responsibilities

Architect our Node.js / Next.js / TypeScript and Supabase stack

Design schemas, event flows and ingest dev tools webhooks to power a real-time personalized engineering portal

Build a system of agents — MCP, tool use, memory, retry logic, context updates, feedback mechanisms

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

Work directly with me 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

Qualification

Node.jsNext.jsTypeScriptEvent-driven systemsServerless architectureGritPerseveranceCommunicationAdaptability

Required

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

You have built something from scratch that people use or pay for

You're unusually obsessed with hard problems

Your current skills or even what you've done before is less important than your ability to go all-in and accomplish anything that you set your mind to

You're comfortable with ambiguity and adapting to dynamic priorities

You need to have good judgement to know when to let little fires burn and when to immediately jump in

You have excellent communication and candor

You'll be communicating directly with engineers and collaborating with us on key decisions

You care about helping swamped engineers fight through the schlep of software development

You have grit and perseverance

You should be accustomed to picking between hard options and pushing through it

You can work in the US long-term

You are a US citizen or green card holder that can start quickly and work with StarSling over many years

Company

StarSling (YC X25)

StarSling is one interface that automates all the tasks that eat up your time after you’ve left your code editor: deployments, performance, incidents, and bugs.

Founded in 2025