Tech Lead - AI Start Up - Python, LLMs, 150k PLUS Generous Equity & Fully Remote

Opus Recruitment Solutions; Remote; GBP 90,000 - 120,000; Full time

Job summary

A leading recruitment firm is seeking a Tech Lead to join an LLM team in London, where you will own the architecture and deployment of models that drive their core product. This hands-on leadership position involves writing production code and defining alignment strategies. The ideal candidate has proven experience in shipping AI/LLM products, strong skills in Python and PyTorch, and an ownership mentality focused on quality and performance. You will face complex challenges in a dynamic tech environment.

Qualifications

• Experience in delivering LLM products with measurable impacts.
• Strong coding abilities in Python and proficiency in modern LLM technology.
• A mindset focused on speed, practicality, and quality.

Responsibilities

• Lead and code; architect systems and mentor engineers.
• Own the model lifecycle from fine-tuning to designing pipelines.
• Develop nuanced moderation and safety systems.

Skills

Proven experience shipping AI / LLM products at scale

Deep technical skills in Python

Deep technical skills in PyTorch

Ownership mentality

Builder’s mindset

Job description

I am looking for a Tech Lead to join my clients LLM team; you’ll own the architecture, training, and deployment of models that drive our core product.

This is a hands-on leadership role : you’ll write production code, define alignment strategies, and ship features that impact millions globally.

Why This Role Is For You

• Massive Scale : Solve real-time challenges in latency, throughput, and context management at 80M+ tokens / day.
• Production Impact : Fine-tune today, see results tomorrow—this is not a research sandbox.
• Complex Problems : Build nuanced moderation and alignment systems for a unique, high-complexity environment.

What You’ll Do

• Lead and code : Architect systems, mentor engineers, and stay hands‑on in Python / PyTorch.
• Own the model lifecycle : From fine-tuning and RLHF / DPO to designing RAG pipelines.
• Build smarter moderation : Develop classifiers and safety systems that go beyond simple filters.

What We’re Looking For

• Proven experience shipping AI / LLM products at scale.
• Deep technical skills in Python, PyTorch, and modern LLM stacks.
• A builder’s mindset : fast, pragmatic, and obsessed with quality.
• Ownership mentality : you care about performance, reliability, and user experience.

Tech Environment

• Scale : 80M+ tokens / day.
• Team : Small, high-impact group with direct access to leadership.
• Culture : High autonomy, low bureaucracy, big challenges.