At a Glance
- Tasks: Build and deploy AI agents for seamless accounting workflows.
- Company: AI-native financial automation startup in London.
- Benefits: Equity options, dynamic work environment, and hands-on experience.
- Other info: Join a high-performance team and make a real impact.
- Why this job: Shape the future of finance with cutting-edge AI technology.
- Qualifications: Expertise in React, TypeScript, and GraphQL; passion for AI.
The predicted salary is between 63000 - 77000 £ per year.
AI-native financial automation startup building an autonomous autopilot for accounting.
Join a high-performance team in London building a fleet of 15+ AI agents that automate complex financial workflows. As a founding engineer, you will ship code 20-30 times daily, architecting core features across React, TypeScript, and Temporal to redefine the industry's system of record from the ground up.
Location: London, UK
Why this role is remarkable:
- Radical Agency: You will own the product roadmap end-to-end, moving from customer discovery to production deployment with total autonomy in a high-urgency environment.
- Frontier Tech: Work at the bleeding edge of AI agents, leveraging a modern stack including Langsmith, GraphQL, and bespoke data platforms to replace manual accounting.
- Founding Impact: As an early hire, you will directly shape the technical architecture, company culture, and product vision alongside a team of top-tier ambitious engineers.
What You Will Do:
- Build and deploy industry-leading AI agents that handle end-to-end accounting workflows with humans-in-the-loop only where necessary.
- Engage directly with customers to identify pain points and rapidly iterate on product features from first principles.
- Drive technical decisions across the entire stack, refining architecture choices and experimenting with new tools to maintain high shipping velocity.
The ideal candidate:
- Proven track record of outperforming peers in high-growth environments with a deep passion for modern AI and product design.
- Expert-level proficiency in React, TypeScript, and GraphQL, with an interest in working with Temporal and AWS infrastructure.
- Strong bias for action and in-person collaboration, thriving in a fast-paced London-based office where the team ships dozens of times per day.
Founding Product Engineer (+ Equity) at Briefcase in London employer: Jack & Jill
At Jack & Jill, we pride ourselves on being an exceptional employer that fosters a dynamic and innovative work culture. Our team enjoys a range of benefits including flexible working arrangements, professional development opportunities, and a collaborative environment that encourages creativity and growth. Located in a vibrant area, we offer unique advantages such as access to cutting-edge technology and the chance to work with industry leaders in AI-driven marketing strategies.
StudySmarter Expert Advice🤫
We think this is how you could land Founding Product Engineer (+ Equity) at Briefcase in London
✨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 Founding Product Engineer (+ Equity) at Briefcase in London
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.
