Software Engineer — AI/LLM Systems & End-to-End Craft

36Labs; Greater London; Hybrid; GBP 70,000 - 110,000; Full time

Job summary

36 Labs is an early-stage startup using AI/ML to optimise social media marketing. We build with video and language models, spanning content conception to generation, distribution and optimisation.

We are hiring a Software Engineer to help us scale long term. The role emphasizes judgment and taste as we harden foundations, keep quality high, and ship rapidly as the project expands across the stack.

Qualifications

• Strong fundamentals in Python and TypeScript.
• Production experience building LLM-powered systems.
• Strong system design skills and product sense across SQL databases and datasets at scale.
• Proficiency with AI coding tools.
• Evidence of solving hard problems via personal projects or GitHub contributions.
• Able to ship end-to-end fixes in a fast-moving environment.

Responsibilities

• Building and extending the systems that turn video and language models into content, end to end
• Designing the abstractions the team builds on, so the codebase stays an asset, not a liability, as we scale
• Looking for opportunities to reduce complexity in a fast-moving codebase: refactoring, deleting, and making the right thing the easy thing to do
• Integrating and structuring raw platform data into clean, reliable inputs: the formats our downstream systems and AI workflows depend on
• Setting the engineering standards a small team compounds on: testing, observability, CI, and code review

Skills

Python

TypeScript

LLM systems

System design

Testing & CI

Code review

Job description

36 Labs is an early-stage startup using AI/ML to optimise social media marketing. We build with video and language models, spanning content conception to generation, distribution and optimisation.

We are hiring a Software Engineer to help us scale long term. The role emphasizes judgment and taste as we harden foundations, keep quality high, and ship rapidly as the project expands across the stack.