At a Glance
- Tasks: Lead the design and development of AI solutions for complex legal workflows.
- Company: Fast-paced Legal AI startup focused on innovation and impact.
- Benefits: Competitive salary, equity options, and a dynamic work environment.
- Other info: Opportunity to influence high-stakes deals and work in a zero-bureaucracy culture.
- Why this job: Join a founding team and shape the future of legal tech with cutting-edge AI.
- Qualifications: 8+ years in software engineering with expertise in TypeScript and Node.js.
The predicted salary is between 40000 - 64000 € per year.
Company Description: High-velocity Legal AI startup for venture capital funds.
As the first Principal Engineer, you will own the architectural evolution of a platform automating complex legal workflows for global VC funds. You'll orchestrate multi-model LLM pipelines, build document-processing engines for sensitive investment data, and drive technical standards. This is a hands-on founding role designed for engineers who thrive on shipping production-ready AI solutions.
Location: London, UK
Why this role is remarkable:
- Direct Market Impact: Build software used by leading global funds to process thousands of real investment documents and influence high-stakes deal outcomes.
- Founding Influence: Join as a true founding team member with significant equity (0.5% – 1.0%) and zero bureaucracy in a high-trust, shipping-focused culture.
- Cutting-Edge Stack: Architect sophisticated Agentic AI pipelines using OpenAI, Anthropic, and Gemini to automate the manual work that currently slows down venture capital.
What You Will Do:
- AI Orchestration: Design and deploy production-grade LLM workflows for document analysis, risk flagging, and automated redlining of legal files.
- End-to-End Ownership: Ship full-stack features using TypeScript, Node.js, and React, moving from architectural design to production code within a single day.
- Secure Scaling: Build robust document plumbing and email ingestion pipelines capable of handling highly sensitive data with enterprise-grade security and observability.
The ideal candidate:
- Technical Mastery: At least 8 years of software engineering experience with deep expertise in TypeScript, Node.js, Express, and MongoDB.
- Production AI Experience: Proven track record of integrating LLMs into real-world products, managing context, costs, and model performance tradeoffs.
- Principal Maturity: Experience setting technical standards and making high-level architectural calls while remaining 100% hands-on and obsessed with shipping quality code.
Principal Engineer ($50k – $80k + Equity) at High-velocity Legal AI startup in London employer: Jack & Jill
Join a pioneering legal AI startup in London, where you will play a crucial role as the first Principal Engineer, shaping the future of automated legal workflows for global venture capital funds. Enjoy a dynamic work culture that prioritises innovation and trust, with significant equity opportunities and the chance to make a direct impact on high-stakes financial decisions. With access to cutting-edge technology and a focus on employee growth, this is an exceptional opportunity for engineers eager to drive meaningful change in the legal tech landscape.
StudySmarter Expert Advice🤫
We think this is how you could land Principal Engineer ($50k – $80k + Equity) at High-velocity Legal AI startup in London
✨Tip Number 1
Network like a pro! Reach out to folks in the legal tech space, especially those connected to venture capital. Attend meetups or webinars, and don’t be shy about sliding into DMs on LinkedIn. You never know who might have the inside scoop on job openings!
✨Tip Number 2
Show off your skills! Create a portfolio showcasing your past projects, especially those involving AI and document processing. This is your chance to demonstrate your technical mastery and production AI experience. Make it easy for potential employers to see what you can bring to the table.
✨Tip Number 3
Prepare for interviews by diving deep into the company’s tech stack. Brush up on TypeScript, Node.js, and any other relevant tools. Be ready to discuss how you would architect solutions for complex legal workflows. We want to see your hands-on approach and problem-solving skills in action!
✨Tip Number 4
Apply through our website! It’s the best way to ensure your application gets seen. Plus, we love seeing candidates who take the initiative. Don’t forget to tailor your application to highlight your experience with LLMs and your ability to ship quality code quickly.
We think you need these skills to ace Principal Engineer ($50k – $80k + Equity) at High-velocity Legal AI startup in London
Some tips for your application 🫡
Show Your Passion for AI:When writing your application, let your enthusiasm for AI and legal tech shine through. We want to see how you can contribute to our mission of automating complex legal workflows, so share any relevant projects or experiences that highlight your passion.
Tailor Your Experience:Make sure to customise your application to reflect the skills and experiences that align with the role. Highlight your expertise in TypeScript, Node.js, and any production AI experience you've had. We love seeing how your background fits into our high-velocity environment!
Be Clear and Concise:Keep your application straightforward and to the point. We appreciate clarity, so avoid jargon and focus on what makes you a great fit for the Principal Engineer role. Remember, we’re looking for someone who can communicate effectively, just like you’ll need to do in this hands-on position.
Apply Through Our Website:Don’t forget to submit your application through our website! It’s the best way for us to receive your details and ensures you’re considered for this exciting opportunity. Plus, it shows you’re serious about joining our team!
How to prepare for a job interview at Jack & Jill
✨Know Your Tech Inside Out
Make sure you’re well-versed in TypeScript, Node.js, and the other technologies mentioned in the job description. Brush up on your experience with LLMs and be ready to discuss specific projects where you've integrated these technologies into production.
✨Showcase Your Problem-Solving Skills
Prepare to discuss real-world challenges you've faced in previous roles, especially those related to AI orchestration and document processing. Use the STAR method (Situation, Task, Action, Result) to structure your answers and highlight your hands-on approach.
✨Demonstrate Your Leadership Qualities
As a Principal Engineer, you'll need to set technical standards and make architectural decisions. Be ready to share examples of how you've led teams or projects, and how you ensure quality while shipping code quickly.
✨Understand the Company’s Vision
Research the startup's mission and the impact of their technology on venture capital. Be prepared to discuss how your skills align with their goals and how you can contribute to building a cutting-edge platform that automates legal workflows.
