Founding Product Engineer (up to £150k)

Dex; Greater London; On-site; GBP 70,000 - 110,000; Full time

Job summary

Dex is building the future of enterprise automation, with autonomous browser agents inside SaaS, banking, and SSO-incompatible apps. You will join as a founding product engineer, owning problems from customer conversation to shipped fixes within days, and shaping a new product category.

You will refine the core browser agent, design a workflow builder for non-technical users, and strengthen encrypted infrastructure to protect data while delivering high ownership and rapid iteration.

Qualifications

• 1+ years building client software with end-to-end product ownership.
• A product-first mindset with focus on UX, design and tangible impact.
• Directly work with customers from problem identification to solution validation.
• Comfort with high ownership and inventing the playbook for a new category.
• Hands-on depth in TypeScript, Electron, browser extensions, Puppeteer/Selenium, zero-trust/E2E encryption, or identity products.

Responsibilities

• Build and refine the core browser agent, running autonomously inside enterprise SaaS, banking, and SSO-incompatible applications.
• Design and implement the workflow builder, empowering non-technical users to configure complex automation sequences.
• Strengthen end-to-end encrypted infrastructure, protecting sensitive customer data against advanced threats.
• Drive features from direct customer feedback to production deployment, often within days.
• Improve the local environment and reliability of agents performing mission-critical tasks.

Skills

Client software

UX design

Customer interaction

High ownership

TypeScript

Electron

Browser extensions

Puppeteer/Selenium

Zero-trust encryption

Identity products

Tools

Puppeteer/Selenium

Zero-trust infrastructure

Identity products

Job description

The role

This company is building the future of enterprise automation, tackling the long tail of mission-critical applications that don't speak SAML. They run autonomous browser agents inside the SaaS, banking, and SSO-incompatible apps that global enterprises rely on daily. Unreliable automation isn't an option here; their platform defends against sophisticated threats and ensures business continuity for customers ranging from decacorn financial-services scale-ups to public insurance companies. You'll be inventing the playbook for a category that's still being defined. You'll join as a founding product engineer with significant surface area across the on-device browser agent, browser extension, and web dashboard. This isn't a role where you'll receive pre-baked requirements; you'll own problems from direct customer conversation to shipped fix within days. You'll improve the core automation engine, build the workflow builder for non-technical users, and strengthen end-to-end encrypted infrastructure. Expect high ownership, direct customer interaction, and the chance to define a new product category.

The work

• Build and refine the core browser agent, running autonomously inside enterprise SaaS, banking, and SSO-incompatible applications.
• Design and implement the workflow builder, empowering non-technical users to configure complex automation sequences.
• Strengthen end-to-end encrypted infrastructure, protecting sensitive customer data against advanced threats.
• Drive features from direct customer feedback to production deployment, often within days.
• Improve the local environment and reliability of agents performing mission-critical tasks.

What You Bring

• 1+ years building client software (desktop, browser, or web) with end-to-end product ownership.
• A product-first mindset: you obsess over UX, design, and the tangible impact of your work.
• A drive to work directly with customers, from problem identification to solution validation.
• Comfort with high ownership and intensity; you'll invent the playbook for a new category, not follow one.
• Hands-on depth in some of: TypeScript, Electron, browser extensions, Puppeteer/Selenium, zero-trust/E2E encryption, or identity products.