At a Glance
- Tasks: Build AI agents for sales pipelines and develop core systems from scratch.
- Company: YC-backed AI-native revenue platform with $6.2M in funding.
- Benefits: Competitive salary, equity options, and a chance to shape the future of AI.
- Other info: Dynamic startup environment with significant career growth potential.
- Why this job: Join a small team where your code directly drives revenue growth.
- Qualifications: 3-6+ years in fullstack development with TypeScript, React, and Next.js.
The predicted salary is between 75000 - 110000 £ per year.
YC-backed AI-native revenue platform with $6.2M seed funding.
You will build autonomous AI agents that handle the work of outbound sales pipelines, moving beyond simple tools to deliver end-to-end results. As one of the first engineers at this post-seed startup, you will design and ship foundational systems including dialer infrastructure and automated prospecting engines that drive revenue for Fortune 500 customers.
Location: London, UK
Why this role is remarkable:
- Join a tiny, high-leverage team of three senior engineers where every line of code directly impacts month-over-month revenue growth and scales the core product.
- Work at the frontier of AI application, building a service where better models compound your work by making the platform faster and harder to compete with.
- Backed by YC S25 and top-tier investors with $6.2M in funding, offering the stability of product-market fit with the high-upside energy of a founding-stage company.
What You Will Do:
- Rebuild core dialer infrastructure from scratch, placing AI agents at the center of the communication loop to handle autonomous interactions.
- Develop AI Inbound SDR systems capable of autonomously converting thousands of monthly callbacks into qualified meetings for global enterprise clients.
- Architect intelligence layers that generate post-call insights and prospecting engines using custom scraping and AI qualification pipelines to find leads.
The ideal candidate:
- Has 3-6+ years of professional fullstack experience, specifically with TypeScript, React, and Next.js, and a computer science degree from a top-tier university.
- Demonstrates a history of shipping end-to-end systems at high-calibre tech companies like Stripe, Revolut, or FAANG, or within high-growth startup environments.
- Possesses builder instincts with experience in AI/LLM implementations such as RAG systems or autonomous agents, and is comfortable owning features from scope to deployment.
Software Engineer Fullstack (£75k-£110k + Equity) at YC-backed AI-native revenue platform employer: Jack & Jill
Join a dynamic and innovative team at our YC-backed AI-native revenue platform in London, where your contributions as a Software Engineer Fullstack will directly influence the growth of cutting-edge technology. We foster a collaborative work culture that values creativity and initiative, offering competitive salaries, equity options, and ample opportunities for professional development in a fast-paced startup environment. Experience the thrill of working on pioneering AI applications while enjoying the stability of strong funding and a clear product-market fit.
StudySmarter Expert Advice🤫
We think this is how you could land Software Engineer Fullstack (£75k-£110k + Equity) at YC-backed AI-native revenue platform
✨Tip Number 1
Network like a pro! Reach out to current employees at the company or similar startups on LinkedIn. A friendly chat can give you insider info and might even lead to a referral, which can seriously boost your chances.
✨Tip Number 2
Show off your skills! If you’ve got a portfolio or GitHub with projects that highlight your fullstack experience, make sure to share it. This is your chance to demonstrate your coding chops and how you can contribute to building those AI agents.
✨Tip Number 3
Prepare for the technical interview! Brush up on your TypeScript, React, and Next.js skills. Practice coding challenges and be ready to discuss your past projects in detail, especially those that involved shipping end-to-end systems.
✨Tip Number 4
Don’t forget to apply through our website! It’s the best way to ensure your application gets seen by the right people. Plus, we love seeing candidates who take that extra step to connect directly with us.
We think you need these skills to ace Software Engineer Fullstack (£75k-£110k + Equity) at YC-backed AI-native revenue platform
Some tips for your application 🫡
Show Your Passion for AI:When you're writing your application, let your enthusiasm for AI and its applications shine through. We want to see how you can contribute to our mission of building autonomous AI agents that really make a difference.
Highlight Relevant Experience:Make sure to showcase your fullstack experience, especially with TypeScript, React, and Next.js. We’re looking for candidates who have a solid track record of shipping end-to-end systems, so don’t hold back on those achievements!
Tailor Your Application:Don’t just send a generic application! Tailor your CV and cover letter to reflect the specific skills and experiences that align with our job description. This shows us that you’ve done your homework and are genuinely interested in joining our team.
Apply Through Our Website:We encourage you to apply directly through our website. It’s the best way for us to receive your application and ensures you’re considered for this exciting opportunity at our YC-backed startup!
How to prepare for a job interview at Jack & Jill
✨Know Your Tech Stack
Make sure you’re well-versed in TypeScript, React, and Next.js. Brush up on your fullstack skills and be ready to discuss how you've used these technologies in past projects. Be prepared to share specific examples of systems you've built or contributed to.
✨Showcase Your Problem-Solving Skills
This role involves building autonomous AI agents, so think about challenges you've faced in previous roles. Prepare to discuss how you approached these problems, the solutions you implemented, and the impact they had on your team or company.
✨Understand the Company’s Vision
Research the YC-backed AI-native revenue platform and understand their mission. Be ready to explain how your skills and experiences align with their goals, especially in terms of driving revenue growth through innovative tech solutions.
✨Ask Insightful Questions
Prepare thoughtful questions that show your interest in the role and the company. Inquire about their current projects, the team dynamics, or how they envision the future of AI in their product. This not only demonstrates your enthusiasm but also helps you gauge if it’s the right fit for you.
