Tech Lead, LLM & Generative AI (Full Remote - UK) in London

Our Vision & Products

EverAI — Building the Future of AI Companionship. One of the Top 15 Largest & Fastest-Growing AI Companies in the World with 35+ Million Users in 2 years.

At EverAI, we are shaping what it means to connect with AI. Our flagship product is the world’s largest AI girlfriend/boyfriend platform, redefining relationships for millions. It is governed by our proprietary moderation system, EverGuard — an internal AI designed to ensure everything we build is safe, ethical, and human-first.

Our Team

We are an enthusiastic, passionate and hardworking team of 70 people. Our founding team has strong entrepreneurial experience building and scaling web products from 0 to IPO.

The Opportunity

We aren’t building a wrapper; we are building a massive-scale conversational intelligence. EverAI has created a platform dedicated to personalized human connection, enabling millions of users to create and interact with highly personalized AI companions. EverAI is processing 80 million tokens per day and growing. We are looking for a Tech Lead to take the helm of our LLM team (currently 3 engineers) and own the architecture, training, and deployment of the models that power our core product.

This is a role for a builder. You won’t just be managing Jira tickets; you will be writing production code, defining our alignment strategy, and shipping features used by millions of users globally. We operate in the uncensored/NSFW space, which presents unique, high-complexity challenges in alignment, moderation, and steerability that you won’t find in standard corporate AI.

Why this role is distinct:

• Massive Scale: You will solve latency, throughput, and context management challenges at a scale of 80M+ daily tokens.
• Production Focus: This is not a research sandbox. If you fine-tune a model today, it impacts millions of users tomorrow.
• Nuanced Engineering: Because we are "uncensored," we cannot rely on lazy, blanket safety filters. You will build sophisticated classifiers and alignment strategies to balance user freedom with strict safety guardrails.

What You Will Do:

1. Ship Code & Lead from the Front: Act as a Player/Coach: Architect the system and mentor the team, but spend significant time hands-on in the codebase (Python/PyTorch). Own the core chat loop: Optimize context windows, memory/RAG retrieval, and inference latency to ensure a seamless, real-time experience.
2. Own the Model Lifecycle: Drive our strategy for SFT (Supervised Fine-Tuning) and RLHF/DPO (Preference Optimization). You decide when to prompt, when to fine-tune, and when to architect a new RAG pipeline. Manage the "Data Engine": oversee the sourcing, labeling, and cleaning of diverse datasets to improve model steerability and multicultural performance.
3. Architect High-Precision Moderation: Build the immune system of the platform. You will design and train custom classifiers to detect and filter non-consensual or illegal content within an explicit environment. Move beyond binary "safe/unsafe" flags to create nuanced, context-aware moderation systems.

Who You Are:

The Non-Negotiables:

• You have shipped AI at scale. You have 8+ years of engineering experience, with a significant portion dedicated to shipping ML/LLM features to millions of active users.
• You are deeply technical. You are proficient in Python/PyTorch and comfortable with the modern LLM stack (vLLM, HuggingFace, fine-tuning pipelines, eval frameworks).
• You understand the "Uncensored" challenge. You are comfortable working with NSFW content and understand the technical rigor required to moderate it effectively without breaking the user experience.
• You have an intuition for Alignment: You understand the physics of LLMs—how prompt conditioning, temperature, and sampling affect the "soul" of a chatbot.
• You have a Doer Mindset: You value velocity. You can distinguish between a "perfect" academic solution and a "shippable" production solution.
• You are an Owner: You don’t rent code. You obsess over metrics, regressions, and the user experience long after the code has been merged.

The Tech Stack & Environment:

• Scale: 80M+ Daily Tokens.
• Team: You + 3 AI Engineers (reporting to you) + DevOps/Web collaborations.
• Culture: High autonomy, low bureaucracy, direct line to the CTO.

Why EverAI?

• Exponential Growth: From 35M+ users in 2 years, to 100M next — and 500M beyond.
• Track Record of Category-Creating Innovation: We consistently launch world-first AI applications — setting the pace, not following it.
• Global Impact: Top-tier user growth, real-world adoption, and cultural relevance.
• Proven Leadership: A senior team that’s launched, scaled, and exited & IPO’d multiple scale ups — now fully focused on reshaping AI companionship.
• Elite Remote Team: 100% remote and built to win — world-class talent from Tier 1 tech companies, with a culture of ownership, velocity, and radical creativity.
• Ethical Core: Our AI ecosystem is governed by EverGuard, our proprietary AI moderation technology, ensuring responsible development at scale.

What We Offer:

• Contract Type: We prefer B2B, but we’re flexible, what matters is long-term commitment and impact.
• Work From Anywhere: Fully remote. Choose the environment where you do your best work.
• Paid Time Off: 4 weeks (20 working days) of PTO per year to recharge and reset.
• Annual Gathering: A yearly in-person meetup to connect, brainstorm, and celebrate wins together.
• Health & Wellness Support: Up to $200 per year for wellbeing expenses + unlimited 1:1 sessions with psychologists and lifestyle experts through OpenUp (also available for up to three family members).
• Co-Working Space Budget: Work from a co-working space up to twice per month (35 EUR / 40 USD per visit) to stay inspired and connected.
• Learning Budget: Dedicated funds to support your professional growth: courses, books, conferences, events, or certifications.
• Equipment: Company laptop provided + monitor budget up to $250 for your workspace setup.
• AI Tools Access: Premium access to ChatGPT, Cursor, Hugging Face, and others, to power your ideas and workflows.

Top Tier Talent Is Our Multiplier

We’re a fully remote group of A-players from Tier 1 tech, led by an exec team who’ve launched, scaled, and exited multiple companies. We move fast, and care deeply about what we build — and who we build it with.

If that’s you — reach out and apply!

External Referral Program: Know someone who could be a great fit for this role? You can refer them through the EverAI External Referral Program and earn a bonus of up to $2,500 if they’re hired.