Software Engineer: Real-Time AI-Driven Sales Tech

throxy (yc p25); Greater London; On-site; GBP 90,000 - 130,000; Full time

Benefits offered by this job

Ownership

Senior peers

AI-native

Fast hiring

Impact from day one

Job summary

throxy is seeking a Software Engineer to join a fast-moving, AI-native team in London. You’ll own end-to-end delivery: design data models, migrations, production instrumentation, and metric monitoring.

The role requires strong TypeScript, web infra expertise, and experience shipping LLM features; you’ll work autonomously toward practical, shipped outcomes. In-person in London, Piccadilly, UK-based or relocating.

Qualifications

• 3+ years of production software engineering at a high-velocity company.
• Deep TypeScript and modern web infra. Includes Next.js, Bun, Postgres, ClickHouse, OpenSearch on AWS, with Datadog monitoring.
• Built systems that can handle real load in production.
• Shipped real LLM features: prompt design, evals, structured outputs, agentic workflows.
• Ability to work without PM handholding on ambiguous problems.
• Strong written communication; able to author design docs that align teams.
• Willingness to work in person in London, UK-based or relocate.

Responsibilities

• Design the data model, ship migrations, instrument production, and monitor metrics end-to-end.
• Own Maestro dialer and real-time calling infrastructure at scale.
• Develop the data engine: provider waterfalls, LLM eval pipelines, self-healing lead dataset, and scoring system.
• Build the intelligence layer: post-call insights and call-outcome classification.
• Replace external tools with in-house solutions where possible.

Skills

TypeScript

Web infra

End-to-end ownership

LLM features

Design docs

Bias to action

Written communication

Tools

Next.js

Bun

PostgreSQL

ClickHouse

OpenSearch

AWS

Datadog

Job description

throxy is seeking a Software Engineer to join a fast-moving, AI-native team in London. You’ll own end-to-end delivery: design data models, migrations, production instrumentation, and metric monitoring.

The role requires strong TypeScript, web infra expertise, and experience shipping LLM features; you’ll work autonomously toward practical, shipped outcomes. In-person in London, Piccadilly, UK-based or relocating.