Job Specifications
About The Team
Dex is an AI-powered recruiter, matching exceptional software engineers with top tech companies. We're one of the fastest-growing UK startups, and have raised $3.1M from a16z and Concept Ventures to build a best-in-class voice agent, matching engine and web app experience that will redefine the way that talent and opportunity connect.
We're hiring a Python engineer to join our engineering team, supporting both our product and AI agent systems.
About The Role
As a Software Engineer at Dex, you'll be a key owner of the backend systems that drive our agentic voice agent and other agents in our web application. You'll work with a modern Python stack - FastAPI, Postgres, Redis, Docker, and Pydantic AI, all running on GCP. Your focus will be split across the following areas, though you can lean into some more heavily than others depending on your interests and strengths:
Product backend: Owning key areas of our backend infrastructure - making sure new additions to product are robust, secure and scalable from day one.
Agent backend: Building and improving the infrastructure that powers our voice agent. This includes running evaluations, improving systematic information extraction, and ensuring our agentic systems run reliably at scale.
Observability: Ensuring visibility into our production systems through monitoring, logging, and performance tracking.
Matchmaking: Building and optimising the data and systems that power our AI-driven talent matching engine.
In this role you will:
Design and build scalable backend infrastructure for AI agent workflows and product systems
Own the reliability and performance of systems that power our voice agent and web application
Work with the team to define technical strategy, architecture, and long-term goals
Build and maintain robust APIs, authentication systems, and database architecture
Collaborate with product, design, and other engineers to build infrastructure that meets evolving needs
Contribute to the development of best practices around system reliability, performance, and delivery velocity
You might thrive in this role if you:
Are genuinely excited about what we're building
Can demonstrate strong backend experience in Python, and solid CS foundations
Take pride in writing clean, maintainable code
Are outcome-oriented and proactively take ownership of areas of the codebase
Excel at systematically breaking down complex problems and weighing up solutions pragmatically
Note: We know that talent can't be summed up in a few bullet points. Even if you don't match all the criteria we've mentioned. We don't want that to be a barrier. If you're excited about what we're building, we want to hear from you!
What We Offer
Joining Dex means being part of a fast-moving, ambitious team building something meaningful. In addition, we offer:
£80,000 to £150,000
Meaningful equity
Flexible working with minimum 3 days a week in our office near London Bridge
Brand-new Macbook Pro
Gym membership
An opportunity to work with and learn from an experienced team, and grow with the business
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About the Company
Employers, hiring managers, recruiters. Everyone has one thing on their mind. Finding talented people. But… everyone's looking in the same places. At the same time. In the same tiring way. Traditional job advertising always targets the same people. The ones that are actively looking for a new job. The only thing is; the best talent is often taken. But just because they're not searching for a new job, doesn't mean they're not looking for one. What if you knew who's eager to switch jobs before they start looking? Welcome to Jo...
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