Product Engineer (Staff/Principal)

Company: Fifth Dimension

Location: London

Posted: May 9th, 2026

About Us

About Us: Fifth Dimension is bringing vibe working to document-heavy industries. Today we work with real estate businesses in the US, EU and APAC, automating complex tasks, extracting valuable insights from documents, and empowering professionals to focus on high-impact work. Our AI workspace transforms how large investment managers and developers handle leases, development documents, and investment decisions. We are a London and New York based startup with investors across Europe and the US. Our founders bring extensive experience in real estate, data and analytics, and technology leadership.

The Challenge

It’s a typical day of analyzing usage analytics and shipping improvements: you hypothesize, prototype a solution, and demo it to stakeholders. You engage with customers to understand day-to-day usage, translate insights into a spec, and start building. You collaborate across teams to deliver a solution that meets real customer needs.

About You

You are an expert software engineer who thinks in terms of user outcomes, not just code. You understand the problem space deeply, make product-informed decisions, and build solutions customers didn’t know they needed until they cannot live without them. You have experience across the full stack—from backends and APIs to polished frontends—and strong product intuition for talking to customers and balancing scope, speed, and quality. You’re proficient with AI coding assistance tools and collaborate effectively with AI to maximize productivity. You pay attention to end-to-end user experience, adapt quickly, and mentor others while working with commercial teams and customers. You value personal growth and view complex problems as opportunities to expand your capabilities.

Your Impact

Reporting to our CTO, you’ll own and shape core product areas end-to-end—from discovery and design through architecture, implementation, deployment, and customer adoption. You’ll work with the engineering team and commercial stakeholders to deliver value to enterprise customers and drive the business forward.

Day to Day

Our Values and Engineering Culture

Our core principles are: Own it, Ship it, and Don’t Be Boring. Our engineering culture emphasizes product-minded engineering, intellectual honesty, effective time management, clear communication, innovation, and personal growth.

Intellectual Curiosity and Honesty in Action

We value curiosity and honesty in problem solving, including documenting findings, sharing results, and improving product reliability.

What We're Looking For

Nice To Have (But Not Required)

What We Offer You

Our benefits package goes beyond the standard startup offering, including tailored support for life challenges, meaningful parental leave, and a salary with equity. We offer a competitive salary range and benefits designed to support your well-being and growth.

The Process

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