Remote Js Engineer: Train Ai & Review Code

Outlier; Quilmes; À distance; ARS 230 602 000 - 353 590 000; Plein temps

Résumé du poste

Tether is hiring an AI Research Engineer for agentic post-training, focused on enabling tool use, reasoning, and autonomous decision-making on edge devices. You will refine pre-trained models and develop post-training algorithms to support goal-directed behavior across diverse applications.

The role spans large-scale data pipelines, distributed training, and cross-functional collaboration to deliver state-of-the-art capabilities in a remote, globally distributed team environment.

Qualifications

• 5+ years of real software engineering experience.
• Comfortable working on complex, production systems.
• Strong coding and architecture awareness.
• Ability to mentor juniors and contribute to technical decisions.
• Experience supporting either Software Engineering or Data-oriented assignments.

Responsabilités

• Conduct end-to-end research and engineering initiatives to advance post-training of agentic and tool-use models to achieve SOTA results.
• Drive model improvements including factuality, instruction adherence, tool use, multi-agent coordination, and reasoning calibration.
• Design and enhance large-scale post-training systems, including data pipelines, training workflows, evaluation frameworks, and benchmark infrastructure.
• Develop rigorous evaluation suites and diagnostic tools to assess model readiness for deployment.
• Strengthen feedback loops from real-world product usage and incorporate signals into post-training.
• Collaborate with tooling, product, and training teams to improve agentic capabilities of frontier models.
• Liaise with research, engineering and cross-functional teams to determine production-readiness for major model releases.

Connaissances

Software engineering

Production systems

Code architecture

Mentor juniors

Data-oriented assignments

Formation

Bachelors in CS or related

MS/PhD preferred

Outils

Distributed training frameworks

Multi-node GPU environments

Description du poste

AI Research Engineer (Agentic Post-training) - 100% Remote Worldwide

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 optimises 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 post‑training methodologies, with a special focus on agentic behaviours and tool use. Your work will refine pre‑trained models so that they not only deliver enhanced intelligence and domain specific capabilities, but also learn to reason, plan, and autonomously invoke external tools to solve real world, multi step tasks and applications on edge devices (i.e., smartphones).

You will work on a wide spectrum of systems, ranging from streamlined, resource efficient agents that run on limited hardware to complex multi modal architectures integrating text, images, and audio, all optimised for tool augmented decision making.

We expect you to have deep expertise in large language model architectures and substantial experience in post‑training for agentic workflows, including tool use fine tuning, function calling, and reinforcement learning from feedback on multi turn interactions. You will adopt a hands‑on, research driven approach to developing, testing, and implementing new post‑training algorithms that unlock goal directed behaviour, self correction, and reliable tool invocation.

Your responsibilities include curating agentic training data (e.g., trajectories of tool use, reasoning chains, environment interactions), strengthening baseline performance, and identifying as well as resolving bottlenecks in post‑training for tool augmented agents to achieve SOTA model quality. The goal is to build models that do not just know but also act, use tools, and adapt, pushing the limits of what agentic AI can achieve.

Responsibilities

Conduct end‑to‑end research and engineering initiatives to advance post‑training of agentic and tool‑use models to achieve SOTA results.

Drive broad, cross‑cutting model improvements, including factuality, instruction adherence, tool/function use, multi‑agent coordination, and reasoning calibration.

Design and enhance large‑scale post‑training systems, including data pipelines, training workflows, evaluation frameworks, and benchmark infrastructure.

Develop rigorous evaluation suites and diagnostic tools to assess model readiness for deployment.

Strengthen feedback loops from real‑world product usage, incorporating both explicit and implicit user signals into post‑training.

Collaborate with tooling, product, and training teams to improve the usefulness, reliability, and agentic capabilities of frontier models.

Closely liaise with research, engineering and cross‑functional teams to determine which integrations are production‑ready for inclusion in major model releases.

Degree in Computer Science, Machine Learning, or a related field; advanced degree (MS/PhD) preferred with a strong publication record in top‑tier AI conferences.

Experience with multimodal post‑training workflows and data pipelines, particularly for agentic systems and tool use.

Hands‑on experience applying post‑training at scale using distributed training frameworks (e.g., multi‑node GPU environments).

Demonstrated experience improving model capabilities in areas such as reasoning, tool use, and multi‑agent coordination that achieve SOTA results.

Proven track record of open‑source contributions related to agentic systems or tool use (code, datasets, or models) on platforms such as GitHub or Hugging Face.

Publications at leading AI conferences (e.g., NeurIPS, ICML, ICLR, ACL, CVPR, ECCV).

Partially Remote
Buenos Aires, Argentina
Full time
R-60887
**Who We Are**
At Kyndryl, we run and reimagine the mission‑critical technology systems that drive advantage for the world's leading businesses. We are at the heart of progress; with proven expertise and a continuous flow of AI‑powered insight, enabling smarter decisions, faster innovation, and a lasting competitive edge. For our people‑Kyndryls‑that means doing purposeful work that powers human progress. Join us and experience a flexible, supportive environment where your well‑being is prioritized and your potential can thrive.
**The Role**
Are you passionate about solving complex problems? Do you thrive in a fast‑paced environment? Then there's a good chance you will love being a part of our Software Engineering - Development team at Kyndryl, where you will be able to see the immediate value of your work.
As a Software Engineering - Developer at Kyndryl, you will be at the forefront of designing, developing, and implementing cutting‑edge software solutions. Your work will play a critical role in our business offering, your code will deliver value to our customers faster than ever before, and your attention to detail and commitment to quality will be critical in ensuring the success of our products.
Using design documentation and functional programming specifications, you will be responsible for implementing identified components. You will ensure that implemented components are appropriately documented, unit‑tested, and ready for integration into the final product. You will have the opportunity to architect the solution, test the code, and deploy and build a CI/CD pipeline for it.
As a valued member of our team, you will provide work estimates for assigned development work, and guide features, functional objectives, or technologies being built for interested parties. Your contributions will have a significant impact on our products' success, and you will be part of a team that is passionate about innovation, creativity, and excellence. Above all else, you will have the freedom to drive innovation and take ownership of your work while honing your problem‑solving, collaboration, and automation skills. Together, we can make a difference in the world of cloud‑based managed services.
Your Future at Kyndryl
The career path ahead is full of exciting opportunities to grow and advance within the job family. With dedication and hard work, you can climb the ladder to higher bands, achieving coveted positions such as Principal Engineer or Vice President of Software. These roles not only offer the chance to inspire and innovate, but also bring with them a sense of pride and accomplishment for having reached the pinnacle of your career in the software industry.
**Who You Are**
You're good at what you do and possess the required experience to prove it. However, equally as important - you have a growth mindset; keen to drive your own personal and professional development. You are customer‑focused - someone who prioritizes customer success in their work. And finally, you're open and borderless - naturally inclusive in how you work with others.
Required Technical and Professional Experience

• **5+ years of real software engineering experience**
• Comfortable working on **complex, production systems**
• Strong **coding + architecture awareness**
• Can mentor juniors and contribute to technical decisions
• Capable of supporting either **Software Engineering** or **Data‑oriented** assignments

Preferred Technical and Professional Experience

• **Bachelor's degree in Computer Science, related technical field, or equivalent practical experience**
• Certification in one or more of the hyperscalers (Azure, AWS, and Google GCP) - otherwise, you can obtain certifications with Kyndryl
• Experience with DevOps tools and modern engineering practices

Being You
The "Kyn" in Kyndryl means kinship, which represents the strong bonds we have with each other, our customers and our communities. We focus on ensuring all Kyndryls feel included and we welcome people of all cultures, backgrounds, and experiences. Even if you don't meet every requirement, we encourage you to apply. We believe in growth, and we're excited to see what you can bring. At Kyndryl, employee feedback has told us that our number one driver of employee engagement is belonging. That sense of belonging - being a valued, respected, trusted member of the team - is fundamental to our culture and fueling great experiences for our customers. This dedication to welcoming everyone into our company means that Kyndryl gives you the ability to thrive and contribute to our culture of empathy and shared success. That's The Kyndryl Way.

What You Can Expect
Your career with us isn't just a job-it's an adventure with purpose. We offer a dynamic, hybrid‑friendly culture that supports your well‑being and empowers you to grow. Our Be Well programs are thoughtfully designed to support your financial, mental, physical, and social health-because we know that when you feel your best, you do your best.
From your very first day, you'll dive into impactful work that powers the systems our customers rely on every day. You won't just contribute-you'll make a difference, tackling meaningful projects that sharpen your skills and fuel your growth.
We're here to champion your journey. With powerful tools to chart your career path, personalized development goals aligned with your ambitions, and continuous feedback to keep you inspired and on track, you'll have everything you need to thrive and evolve. You'll develop in‑demand skills to grow your career and achieve your ambitions with access to cutting‑edge learning opportunities-from certifications with Microsoft, Google, and Amazon to coaching and hands‑on experiences. And through it all, you'll be part of a culture that values empathy, restless learning, and a devotion to shared success.
We want you to thrive here-and we're committed to helping you do just that. Ready to make an impact? Join us and help shape what's next.

Get Referred!
If you know someone that works at Kyndryl, when asked 'How Did You Hear About Us' during the application process, select 'Employee Referral' and enter your contact's Kyndryl email address.

We're glad you're here. Take a look around at the many exciting career opportunities we have available and apply today!

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