Title: Software Engineer - AI Agents | Rust | Typescript | React

Location: London, 4 days in office (Shoreditch)

Salary: Up to £300,000 + Compelling Equity

This role is with one of Dex’s trusted partner companies. We work closely with their teams to truly understand their culture, goals, and what they’re looking for, so we can match you with the right opportunity and give you context about the role before you commit to a process.

If you're interested, sign up to Dex to apply .

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About the company

We’re an early-stage technology company building a new AI-powered product focused on improving how organisations design, reason about, and operate complex models and workflows.

The initial product targets a critical but underserved area where high-impact decisions are made using outdated tools and fragile processes. While these workflows sit at the core of many businesses, the underlying software has seen little meaningful evolution.

Longer term, the ambition is to build a broader platform that supports the full lifecycle of complex decision-making, spanning modelling, collaboration, and execution. We believe this represents a large, durable opportunity and a new category of applied AI software.

The team is small, highly technical, and product-focused, with an emphasis on speed, quality, and ownership.

The opportunity

This is a chance to join very early and help shape both the product and the engineering approach from first principles.

You’ll work in a tight-knit team building foundational product capabilities where performance, correctness, and usability all matter. Engineering decisions directly influence product direction, user trust, and long-term technical foundations.

The role is intentionally broad and well-suited to engineers who enjoy high ownership, technical depth, and working across boundaries.

What you’ll do

• Build and evolve core product features from early foundations.
• Own features end to end, spanning backend services, APIs, and frontend user experiences.
• Work across Rust for performance-critical systems and TypeScript across the product stack.
• Build and maintain React-based user interfaces for complex, interactive workflows.
• Use modern AI-assisted development tools to improve speed and code quality.
• Design and optimise systems with a focus on performance, reliability, and correctness.

You should have

• Strong engineering fundamentals and experience building high-quality software systems.
• A product-minded approach, with ownership of meaningful features or components.
• Comfort operating in early-stage, high-ambiguity environments.
• High agency, curiosity, and a bias toward action.
• Ability to learn quickly and work across the stack.
• A preference for small, talent-dense teams.

Tech environment

• Modern backend services and APIs.
• Strong systems foundations using both statically and dynamically typed languages.
• Frontend development for complex, interactive user-facing tools.
• Cloud-native infrastructure and production operations.
• AI-first development workflows and internal tooling.
• Emphasis on performance, reliability, and developer experience.

Why it’s compelling

• Join at the ground floor of a new product with strong traction.
• Work in a small team where individual contribution has outsized impact.
• High autonomy and meaningful influence over product and technical direction.
• Tackle hard, abstract problems with real-world consequences.
• Competitive compensation aligned with early contribution.

If you're interested, sign up to Dex to apply .

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