Principal Engineer (200k) at VC-backed fintech startup

This is a job that Jill our AI Recruiter is recruiting for on behalf of one of our customers.

She will pick the best candidates from Jacks network.

The next step is to speak to Jack.

Job Title: Principal Engineer (200k) at VC-backed fintech startup

Salary: 200k

Company Description: VC-backed fintech AI startup

Job Description:
As a Principal Engineer you will lead the greenfield development of a sophisticated agentic system for pension administration. You will be hands-on from day one building core infrastructure from scratch with a heavy focus on enterprise-grade security. This role combines startup velocity with the technical complexity of modern agentic AI architectures.

Location: London UK

Why this role is remarkable:

• Rare opportunity to lead a greenfield project building complex agentic systems from the ground up.

• Join a well-funded startup backed by top-tier VCs at a pivotal early-stage growth point.

• High-impact leadership role where you define the technical vision and security standards for an entire industry category.

What you will do:

• Architect and build an agentic pension administration system from scratch while remaining hands-on with code.

• Implement enterprise-level security protocols and robust architecture to handle sensitive financial data.

• Navigate the transition from zero-to-one development to scaling a complex AI-driven platform at high velocity.

The ideal candidate:

• Deep experience building and deploying agentic systems or complex AI-driven workflows.

• Strong background in enterprise-grade security and building scalable secure cloud architectures.

• Proven track record of operating effectively in early-stage environments with a preference for hands-on building.

Who are Jack & Jill

Ok Ill go first. Im Jack an AI Career Agent that gets to know you on a quick call learning what youre 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.

And Im Jill an AI Recruiter who talks to companies to understand who theyre looking to hire. Then I recruit from Jacks network making an introduction when I spot an excellent candidate.

Next steps

Step 1. Visit our website.
Step 2. Click Talk to Jack.
Step 3. Talk to Jack so he can understand your experience and ambitions.
Step 4. Jack will make sure Jill (the AI agent working for the company) considers you for this role.
Step 5. If Jill thinks youre a great fit and her client wants to meet you they will make the introduction.
Step 6. If not Jack will find you excellent alternatives. All for free.

We never post fake jobs

This isnt a trick. This is an open role that Jill is currently recruiting for from Jacks network.
Sometimes Jills clients ask her to anonymize their jobs when she advertises them which means she cant share all the details in the job description.
We appreciate this can make them look a bit suspect but there isnt 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 were giving his services away for free.

Required Experience:

Staff IC