At a Glance
- Tasks: Build AI systems that revolutionise outbound sales and lead qualification.
- Company: Join throxy, a cutting-edge YC S25 AI startup with $6.2M funding.
- Benefits: Competitive salary, equity options, and a chance to shape the future of sales tech.
- Other info: Be part of a small, elite team with massive growth potential.
- Why this job: Make a real impact by developing systems for Fortune 500 clients and startups.
- Qualifications: 3+ years fullstack experience, strong TypeScript and React skills.
The predicted salary is between 75000 - 110000 £ per year.
throxy is a YC S25 AI startup that has raised $6.2M to build autonomous revenue pipelines that handle outbound sales end-to-end.
Join a senior team of three at throxy building AI agents that autonomously handle outbound sales and inbound lead qualification. You will own problems end-to-end, developing fullstack systems with TypeScript and Next.js. This is a high-impact role where your code directly generates revenue for Fortune 500 customers and fast-growing startups.
Why this role is remarkable:
- Join a YC S25 company at a post-seed stage with $6.2M in funding and proven month-over-month growth.
- Every AI improvement compounds the service's value, allowing you to build on a massive tailwind rather than racing against one.
- Operate with outsized leverage as an early engineer on a tiny, elite team shipping foundational systems for global enterprise clients.
What You Will Do:
- Build and scale autonomous calling infrastructure and AI inbound SDR systems that convert callbacks directly into scheduled meetings.
- Develop intelligence layers that generate post-call insights and prospecting engines using custom scraping and AI qualification pipelines.
- Architect and iterate on a modern stack featuring TypeScript, React, Next.js, SingleStore, OpenSearch, and Trigger.dev.
The ideal candidate:
- Has 3+ years of professional fullstack experience, preferably with a background at high-calibre companies like Stripe, Revolut, or FAANG.
- Possesses strong computer science fundamentals, a degree from a top-tier university, and a track record of shipping projects end-to-end.
- Demonstrates deep proficiency in TypeScript and React, with a strong interest in building with LLMs, RAG systems, or AI agents.
Software Engineer Fullstack (£75k-£110k + Equity) at throxy employer: Jack & Jill
At throxy, we pride ourselves on being an exceptional employer, offering a dynamic work culture that fosters innovation and collaboration. As a member of our elite team in London, you'll enjoy competitive salaries, equity options, and the opportunity to make a significant impact on our cutting-edge AI solutions. We are committed to your professional growth, providing ample opportunities for skill development and career advancement in a fast-paced startup environment.
StudySmarter Expert Advice🤫
We think this is how you could land Software Engineer Fullstack (£75k-£110k + Equity) at throxy
✨Join Local Tech Meetups
Get out there and mingle with fellow developers by joining local tech meetups. It’s a fantastic way to meet people who might be working at Jack & Jill or know someone who does. Plus, you can pick up some trendy tech skills and trends while you're at it!
✨Contribute to Open Source Projects
Show off your coding chops by jumping into open-source projects. Not only does this give you practical experience, but it also gets you noticed in the dev community. You'll create a killer portfolio that speaks volumes about your skills to Jack & Jill.
✨Tap into Online Developer Communities
Don’t underestimate the power of online developer communities like GitHub, Stack Overflow, and even Reddit. Participate in discussions, share your projects, and build your visibility. We can often find opportunities through these channels that can lead to a full-time gig at companies like Jack & Jill.
✨Explore Job Boards Specifically for Tech Roles
Keep your eyes peeled on job boards that focus on tech roles. Sites like TechCareers or Stack Overflow Jobs can often have listings for companies like Jack & Jill that might not show up on broader job sites. Make it a habit to check these regularly, and don’t hesitate to apply directly through our website!
We think you need these skills to ace Software Engineer Fullstack (£75k-£110k + Equity) at throxy
Some tips for your application 🫡
Show off your coding skills:When applying for a software engineering role, it's super important to showcase your coding skills. Make sure your CV includes your tech stack, any relevant programming languages you’re comfortable with, and examples of projects you've worked on. If you have a GitHub profile, link it up! We love to see code in action.
Tailor your portfolio:For a full-time role, we’d expect to see some solid examples of your work in your portfolio. Make sure to include at least two or three projects that highlight your problem-solving skills and your ability to work with different technologies. Focus on the projects that are most relevant to the position at Jack & Jill.
Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at Jack & Jill and how your skills align with the role. Show us your passion for software development. We dig enthusiastic candidates who understand the value of collaboration and continuous learning!
Be clear and concise:When it comes to writing your CV and cover letter, clarity is key. Avoid jargon that could confuse us and stick to simple, direct language. Highlight your achievements with quantifiable results where possible, and keep everything easy to read. A well-organised application goes a long way!
How to prepare for a job interview at Jack & Jill
✨Brush Up on Your Coding Skills
For a full-time software engineering role, it's crucial that we stay sharp with our coding abilities. Expect technical questions that might involve solving problems on the spot or discussing algorithms. Practise on platforms like LeetCode or HackerRank to get comfortable with the types of questions that often come up.
✨Know Your Tools and Frameworks
Make sure we’re well-acquainted with the tools and technologies listed in the job description. Familiarise ourselves with any specific frameworks or programming languages mentioned. If Jack & Jill uses React or Node.js, for instance, be ready to discuss how we’ve used them in previous projects or coursework.
✨Showcase Your Projects
Bring along a portfolio that highlights our best work. This could be code samples, GitHub repositories, or any side projects we’ve built. Make sure we can talk through our thought process for each project, especially the challenges we faced and how we solved them—this shows our problem-solving skills in action.
✨Prepare for Behavioural Questions
While technical skills are key, full-time positions also require cultural fit. Be ready to discuss our previous experiences and how we handle teamwork, conflict, and deadlines. Brush up on the STAR method—Situation, Task, Action, Result—to clearly articulate our past experiences when discussing how we've contributed to a team.
