Founding Senior Engineer: Proactive AI Assistant (London)

Dex; Greater London; On-site; GBP 90,000 - 150,000; Full time

Job summary

Dex is seeking a Founding Senior Engineer to own and build a proactive AI assistant platform. You will oversee the desktop application, backend, and core algorithms, collaborating directly with AI researchers to turn research into shippable features.

You will lead architectural decisions for the entire stack in a small, high-calibre team, with a strong emphasis on building rather than integrating. London-based, in-person work required.

Qualifications

• PhD or demonstrable ownership of a hard, end-to-end technical project.
• 5+ years building complex, comparable systems, solving genuinely hard problems.
• Proficiency in TypeScript, Python, Rust, or C++, with ability to master new languages.
• Experience owning the full engineering lifecycle: shipping robust products from user requests.
• Comfortable with cloud infrastructure and SQL/NoSQL databases.

Responsibilities

• Build and own the desktop application, front and back end.
• Develop core algorithms bridging the AI model and user actions.
• Design backend systems for continuous data ingestion and model maintenance.
• Collaborate with AI researchers to ship robust product features.
• Drive architectural decisions across the entire stack, from UI to data persistence.

Skills

TypeScript

Python

Rust

C++

Cloud infrastructure

SQL/NoSQL databases

Education

PhD or demonstrable end-to-end project ownership

5+ years building complex systems

Job description

Dex is seeking a Founding Senior Engineer to own and build a proactive AI assistant platform. You will oversee the desktop application, backend, and core algorithms, collaborating directly with AI researchers to turn research into shippable features.

You will lead architectural decisions for the entire stack in a small, high-calibre team, with a strong emphasis on building rather than integrating. London-based, in-person work required.