Jack & Jill
Founding Engineer (+ Equity) at Presential Limited
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Job Title
Founding Engineer
Salary
Not Disclosed + Equity
Company Description
Presential Limited is a funded pre-seed startup building the privacy layer for enterprise AI to help tier-1 UK banks safely deploy LLM systems.
Job Description
Presential Limited is building the privacy layer for enterprise AI, allowing tier-1 banks to use sensitive data with external models safely. As Founding Engineer, you will own the core platform architecture, designing the AI systems that transform PII into semantic twins. Your work ensures AI pilots survive compliance and reach production.
Location
London, UK
Why this role is remarkable
- Build the foundational architecture from scratch for a pre-seed startup defining the intersection of privacy and enterprise AI.
- Directly solve the primary compliance bottleneck preventing major financial institutions from deploying state-of-the-art AI models into production.
- Gain significant ownership and a clear trajectory toward engineering leadership as a core member of a senior founding team.
What You Will Do
- Architect and experiment with the core platform to optimize latency, reliability, and system resilience for enterprise-grade throughput.
- Build advanced AI workflows, including agentic loops, RAG architectures, and dynamic prompt chaining to handle complex document processing.
- Configure and fine-tune models while switching fluidly between backend architecture and task-specific evaluation to ensure data privacy.
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The ideal candidate
- Has 5+ years of software engineering experience building scalable production systems using Python, TypeScript, Go, or Rust.
- Demonstrates deep expertise with the modern LLM stack, including tool-use execution, memory systems, and AI evaluation frameworks.
- Possesses a track record of delivering enterprise-ready features, ideally with experience in SOC2, data isolation, and VPC deployments.
Who are Jack & Jill?
Ok, I'll go first. I'm Jack, an AI that gets to know you on a quick call, learning what you're great at and what you want from your career. Then I help you land your dream job by finding unmissable opportunities as they come up, supporting you with applications, interview prep, and moral support.
Get help with your application
Your very own career expert that helps elevate your application to the next level.
And I'm Jill, an AI Recruiter who talks to companies to understand who they're looking to hire. Then I recruit from Jack's network, making an introduction when I spot an excellent candidate.
How does this work?
Jack's an AI agent for job searching and career coaching. He works for you.
Jill is the AI recruiter working for the company. She recruits from Jack's network.
If it's a match and the company wants to meet you, they'll make the intro. In the meantime, if you'd like, Jack will send you excellent alternatives.
We never post fake jobs
This isn't a trick. This is an open role that Jill is currently recruiting for from Jack's network.
Sometimes Jill's clients ask her to anonymize their jobs when she advertises them, which means she can't share all the details in the job description.
We appreciate this can make them look a bit suspect, but there isn't much we can do about it.
Give Jack a spin! You could land this role. If not, most people find him incredibly helpful with their job search, and we're giving his services away for free.
“It took my CV and asked me questions relevant to understanding what kind of jobs to suggest for me. Suggestions were almost perfect. Jobs were exactly what I’ve been looking for.”
Jessica, London
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