Remoto: Teletrabajo

Our client is a remote product studio that builds MVPs and custom software for startups and companies past the idea stage. Clients hire them for a fixed‑scope MVP or for a product team billed by the two‑week sprint, and the whole team uses AI coding tools every day.They've been at it since 2020 and were profitable in 2025, with a 30% net margin. After building their own AI systems, they tripled monthly revenue with the same team size. Clients rate them 4.9 out of 5 in verified reviews, and the startups they build for have raised more than $25M in venture funding.Your RoleYou'll join the team building workflow software for one of the studio's clients: a live product that needs new workflow features while the existing ones keep running. The client's own engineers commit to the same repo, so every new table, permission and workflow goes in next to code someone else is changing. The weight is on the server side, from the SQL database on Azure up through the API, and you also build the React and TypeScript screens that sit on top.AI coding tools draft most of the specs, tests and migrations. You direct them, read every diff line by line, and answer for what merges. If you'd rather write most of the code by hand, this probably isn't the right seat.You report to the studio's leadership and work day to day with the lead developer and the product manager, who sets the acceptance criteria for each sprint. Success means delivering four to five features per two‑week sprint, each verified before merge, and owning one area end to end (such as the task engine or the legacy migration) without breaking a live feature.You Bring4+ years building full‑stack web applications and releasing them to productionExperience working in a codebase you didn't write, learning its conventions before changing itHands‑on work on workflow software where different user roles see different data, with approvals, task queues or state machines and an audit log or versioned historyReact, TypeScript and SQL on Azure, including schema design and migrationsDaily use of Cursor, Claude Code or a similar AI coding tool on production work, with tests and CI behind itClear written and spoken EnglishExperience delivering in fixed‑scope sprints with branches, code review and feature flagsBonus PointsWork in a regulated setting such as finance, health or insuranceA migration from a legacy system, with reconciliation and duplicate reviewTime as an outside vendor committing to a client's repoProject rules, custom prompts or agent setups for AI coding tools that your team adoptedSpanish, since the platform is bilingualWhat's OfferedFully remote contractor role from LATAM, full time at about 40 hours a weekCore hours in US time zones, so your day overlaps with the lead developer and the product managerAn area of the product to own end to end,



with your schema designs reviewed by the lead developer and the client's engineersA team where AI‑first delivery is already the daily routine, with tests, CI and feature flags as part of the normal processA start in early NovemberInterview ProcessIntro Call: 30 minutes with atomic HR on your background and goalsLeadership Screening: A short call, possibly with an async part firstProduct and Developer Conversation: How you take features from acceptance criteria to mergeTake‑Home Test: One feature like the real scope, built and checkedAI Research Engineer (Agentic Post‑Training) 100% Remote WorldwideJoin Tether and Shape the Future of Digital FinanceAt 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 TetherTether 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 integral 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?As a member of the AI model team, you will drive innovation in post‑training methodologies, with a special focus on agentic behaviors 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).About the jobAs a member of the AI model team, you will drive innovation in post‑training methodologies, with a special focus on agentic behaviors 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 optimized 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 behavior, self correction, and reliable tool invocation.ResponsibilitiesConduct 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.#J-18808-Ljbffr

📌 Senior Full Stack Ai Engineer - Remote Work | Ref#304064 (Tandil)
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📍 Tandil