Explore AI roles

Keyboard friendly • Copy, share & save roles

Sort by

Join Tether and Shape the Future of Digital FinanceAt Tether, we’re not just building products, we’re pioneering a gl...

Research Ai Engineer Education

$122k - $144k* · Senior Fully remote

Apply

Join Tether and Shape the Future of Digital FinanceAt Tether, we’re not just building products, we’re pioneering a gl...

Research Ai Engineer Bitcoin

$122k - $144k* · Senior Fully remote

Apply

Join Tether and Shape the Future of Digital FinanceAt Tether, we’re not just building products, we’re pioneering a gl...

Research Ai Engineer Bitcoin

$122k - $144k* · Senior Fully remote

Apply

Join Tether and Shape the Future of Digital FinanceAt Tether, we’re not just building products, we’re pioneering a gl...

Spain Remote Research Ai

$90k - $90k* · Senior Fully remote

Apply

The research team at Chainalysis is inspired by solving the hardest technical questions and creating products that bu...

Research Blockchain Crypto Defi

$43k - $65k* · Senior Fully remote

Apply

Selected role

AI Research Engineer Pretraining

Tether CT Barcelona ES

Live

$122k - $144k · Senior Full-time Posted 6 months ago 3 min read

Join Tether and Shape the Future of Digital Finance

At Tether, we’re not just building products, we’re pioneering a global financial revolution. Our cutting-edge solutions empower businesses—from exchanges and wallets to payment processors and ATMs—to seamlessly integrate reserve-backed tokens across blockchains. By harnessing the power of blockchain technology, Tether enables you to store, send, and receive digital tokens instantly, securely, and globally, all at a fraction of the cost. Transparency is the bedrock of everything we do, ensuring trust in every transaction.

Innovate with Tether

Tether Finance: Our innovative product suite features the world’s most trusted stablecoin, USDT, relied upon by hundreds of millions worldwide, alongside pioneering digital asset tokenization services.

But that’s just the beginning:

Tether Power: Driving sustainable growth, our energy solutions optimize excess power for Bitcoin mining using eco-friendly practices in state-of-the-art, geo-diverse facilities.

Tether Data: Fueling breakthroughs in AI and peer-to-peer technology, we reduce infrastructure costs and enhance global communications with cutting-edge solutions like KEET, our flagship app that redefines secure and private data sharing.

Tether Education: Democratizing access to top-tier digital learning, we empower individuals to thrive in the digital and gig economies, driving global growth and opportunity.

Tether Evolution: At the intersection of technology and human potential, we are pushing the boundaries of what is possible, crafting a future where innovation and human capabilities merge in powerful, unprecedented ways.

Why Join Us?

Our team is a global talent powerhouse, working remotely from every corner of the world. If you’re passionate about making a mark in the fintech space, this is your opportunity to collaborate with some of the brightest minds, pushing boundaries and setting new standards. We’ve grown fast, stayed lean, and secured our place as a leader in the industry.

If you have excellent English communication skills and are ready to contribute to the most innovative platform on the planet, Tether is the place for you.

Are you ready to be part of the future?

About the job:

As a member of the AI model team, you will drive innovation in architecture development for cutting-edge models of various scales, including small, large, and multi-modal systems. Your work will enhance intelligence, improve efficiency, and introduce new capabilities to advance the field.

You will have a deep expertise in LLM architectures, a strong grasp of pre-training optimization with a hands-on, research-driven approach. Your mission is to explore and implement novel techniques and algorithms that lead to groundbreaking advancements: data curation, strengthening baselines, identifying and resolving existing pre-training bottlenecks to push the limits of AI performance.

Responsibilities:

Conduct pre-training AI models on large, distributed servers equipped with thousands of NVIDIA GPUs.
Design, prototype, and scale innovative architectures to enhance model intelligence.
Independently and collaboratively execute experiments, analyze results, and refine methodologies for optimal performance.
Investigate, debug, and improve both model efficiency and computational performance.
Contribute to the advancement of training systems to ensure seamless scalability and efficiency on target platforms.

A degree in Computer Science or related field. Ideally PhD in NLP, Machine Learning, or a related field, complemented by a solid track record in AI R&D (with good publications in A* conferences).
Hands-on experience contributing to large-scale LLM training runs on large, distributed servers equipped with thousands of NVIDIA GPUs, ensuring scalability and impactful advancements in model performance.
Familiarity and practical experience with large-scale, distributed training frameworks, libraries and tools.
Deep knowledge of state-of-the-art transformer and non-transformer modifications aimed at enhancing intelligence, efficiency and scalability.
Strong expertise in PyTorch and Hugging Face libraries with practical experience in model development, continual pretraining, and deployment.

Ready to apply? You'll go straight to the hiring team.

No agency in the middle · Your profile is shared privately.

Explore the complete AI ecosystem

Discover the best AI-first companies, podcasts, events, learning paths, and jobs in one focused hub.

AI Learning Hub · Always curated, never noisy

Simple pricing for serious AI hiring

Pay per listing. No subscriptions, no hidden fees. Designed for teams hiring for high-impact AI roles.

No-risk: replace or refund if the role doesn’t get traction.

Standard listing

Reach active AI talent

For startups

$349 per role

30-day live listing in the AI job feed.
Structured posting written for AI engineers (we’ll help refine copy).
Instant alerts to subscribed candidates for your tags (LLMs, agents, infra, etc.).

Most teams see first applicants within 24–48 hours.

Max visibility to senior talent

For scale-ups

$649 per role

Everything in Standard, plus homepage & “Featured role” placement.
Priority placement in weekly AI roles newsletter.
1:1 review of your role with DevFound to calibrate for top-tier candidates.
Highlight badge on job page to increase conversion.

Best for teams hiring 1–3 critical AI roles this quarter.

Research Web3 Jobs in Barcelona, Spain

Explore AI roles

AI Research Engineer Pretraining

AI Research Engineer Finetuning

AI Research Engineer Model Serving Inference

AI Researcher 100% Remote Spain

Manager Research

Explore the complete AI ecosystem

Choose Your Plan

Simple pricing for serious AI hiring

Reach active AI talent

Max visibility to senior talent