Senior Full Stack Engineer

👶 About Junior We're building cutting-edge LLM-powered tools that supercharge investment research for the world's most demanding deal teams. Our clients include several of the top 10 global private equity firms, Big 4 professional services firms, and leading consulting practices: organisations responsible for deploying billions of dollars annually. We're a profitable, bootstrapped company with a growing team of ~28 people based in London and New York. We 10x'd our revenue in 2025 and are on track to grow 2-3x again this year. Junior saves clients an average of 10 hours per week, and we're expanding fast into new verticals including investment banking, hedge funds, and research firms. 💡 Role Description As one of our first engineering hires, you'll have the unique opportunity to: Ship quickly Design and build new modes of working with computers Work on groundbreaking projects involving LLMs Collaborate closely with our external partners to fuel our growth Contribute to product decisions, direction and prioritization Shape our engineering culture 🔧 Sample set of projects Build new frontier products at Junior to ingest more types of research inputs Build a voice-to-voice survey tool with extremely low latency that can autonomously conduct high volume of research tasks Build a mobile app from scratch in 3 weeks Create segmented knowledge graphs built on top of the output of unstructured ⇒ structured data transformations Build an AI native CRM system with deep links to the knowledge graph above 🔥 About You We're looking for product-minded full-stack engineers who: Based in NYC Are eager to contribute to product decisions Have strong communication skills and a desire for a client-facing role Are proficient in our tech stack: Next.js, TypeScript, PostgreSQL Bonus points for experience building & designing AI-powered products! Feel like you are never building fast enough 🌵 Benefits All the usual benefits (competitive pay and equity, private healthcare etc). Unusual benefits: Gym membership In-office cook Summers working in Greece by the beach If you're excited about the opportunity to drive innovation at Junior, we'd love to hear from you!We can't wait to meet you! 🙌

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