Senior Software Engineer - LLM/AI Focused

JR United Kingdom; London; Hybrid; GBP 200,000 +; Full time

Job summary

A leading AI startup in London is seeking a Senior Software Engineer to focus on LLMs and generative AI for a 6-month contract. You'll develop innovative media solutions, working alongside talented researchers and designers. Join a flexible hybrid setup to redefine how media is processed and created.

Qualifications

• 3+ years' experience in software engineering.
• Practical experience with LLMs and generative AI.
• Strong backend/cloud infrastructure knowledge.

Responsibilities

• Develop scalable systems for ingesting and transforming media.
• Orchestrate prompts and embeddings for advanced media interactions.
• Build hybrid human-AI tools for creative workflows.

Skills

Python

TypeScript

Go

LLMs

Generative AI

Backend/Cloud Infrastructure

Agile Environment

Tools

AWS

GCP

Microservices

Job description

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Senior Software Engineer - LLM/AI Focused, london

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Client:

Location:

london, United Kingdom

Job Category:

Other

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EU work permit required:

Yes

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Job Views:

2

Posted:

06.06.2025

Expiry Date:

21.07.2025

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Job Description:

Senior Software Engineer - LLM Focused
6-MONTH CONTRACT

Competitive Day Rate | OUTSIDE IR35 | Hybrid (1 day/week London)

Join an early-stage AI startup revolutionizing how creators, studios, and brands produce and interact with media. Using advanced LLMs and generative AI, this project is building a platform that transforms raw footage into dynamic narratives, scripts, and personalized content - empowering creativity at scale. You'll be part of a fast-moving team blending engineering excellence with cutting-edge AI research to redefine media workflows.

THE COMPANY

Senior Software Engineer - LLM Focused
6-MONTH CONTRACT

Competitive Day Rate | OUTSIDE IR35 | Hybrid (1 day/week London)

Join an early-stage AI startup revolutionizing how creators, studios, and brands produce and interact with media. Using advanced LLMs and generative AI, this project is building a platform that transforms raw footage into dynamic narratives, scripts, and personalized content - empowering creativity at scale. You'll be part of a fast-moving team blending engineering excellence with cutting-edge AI research to redefine media workflows.

THE COMPANY

This stealth-mode startup is backed by leading investors and features a team of engineers and AI researchers passionate about the future of interactive media. The company's mission is to merge creativity and AI, delivering innovative products that reshape storytelling and digital content creation. You'll work in a flexible hybrid setup, with one day a week in their central London office.

THE ROLE

As a Software Engineer, you'll help build the core infrastructure powering real-time media processing with LLMs and generative models. Your work will involve:

• Developing scalable systems for ingesting, analyzing, and transforming video, audio, and text using AI

• Orchestrating prompts, embeddings, vector search, and fine-tuned models to enable advanced media interactions

• Building hybrid human-AI tools that blend creative workflows with robust engineering solutions

• Collaborating closely with product designers, media professionals, and AI researchers to bring ambitious features to life
  

KEY SKILLS AND REQUIREMENTS

• 3+ years' experience in software engineering (Python, TypeScript, Go, or similar)

• Practical experience with LLMs, generative AI, or related APIs (OpenAI, Claude, LangChain, etc.)

• Strong backend/cloud infrastructure knowledge (AWS, GCP, microservices, scalable APIs)

• Passion for media, creativity, and building innovative AI-driven products

• Comfortable working in an agile, fast-paced startup environment
  

DESIRABLE SKILLS

• Experience with media processing tools (FFmpeg, WebRTC)

• Familiarity with vector databases (Pinecone, Weaviate) and embedding workflows

• Background in generative audio/video models or multimodal AI systems
  

HOW TO APPLY

Please register your interest by sending your CV and portfolio via the apply link on this page. We welcome unconventional introductions highlighting projects or side work you're proud of.