Staff AI Engineer, Payments Intelligence

Yuno; Portugal; Remote; EUR 95,000 - 150,000; Full time

Benefits offered by this job

Remote work from everywhere

Home Office bonus

Stock options

Health plan wherever you are

Flexible days off

Growth courses

Job summary

Yuno is seeking a Staff AI Engineer to lead the AI for Payments Intelligence, building production AI agents and intelligence systems that improve payment operations across markets.

You will shape LLM pipelines, ensure safety and guardrails, and mentor engineers in a fast-paced, compliance-sensitive environment with multilingual customer conversations.

Qualifications

• Extensive software engineering experience with production LLM/AI-agent systems.
• Expertise in agentic systems: multi-step agents, tool use, orchestration, memory, and RAG.
• Strong LLM application skills: prompt engineering and guardrails for safe outputs.
• Strong Python for AI/ML and backend engineering (Go/Kotlin) to productionize systems.
• Experience with cloud infrastructure to run AI workloads (AWS or similar).
• Experience with AI evaluation and observability tools.
• Proven technical leadership: mentoring engineers and delivering cross-team projects.
• Advanced English, written and spoken.

Responsibilities

• Architect and lead design of Yuno's AI agents (AIDA, NOVA) and intelligence systems.
• Design multi-step agents with tool use, orchestration, memory, and retrieval-augmented generation.
• Build conversational, multilingual experiences across channels like phone and WhatsApp.
• Define evaluation, safety, and guardrails for compliant, scalable AI.
• Architect client-intelligence systems turning payment data into merchant insights.
• Develop AIOps automation to streamline operations and support.
• Mentor engineers and collaborate with Product, Data Science, and Staff Engineers.

Skills

Agentic AI systems

Python for AI/ML

Go / Kotlin backend

Production LLM deployment

Mentorship & leadership

English proficiency

Software engineering leadership

Tools

LangFuse

LangSmith

MLflow

Datadog

Kubernetes

Terraform

Job description

Remote · Full Time · Individual Contributor · +8 Years of Experience

Who We Are

Yuno is the AI-native operating system of global commerce, powering the financial infrastructure of enterprise merchants, banks, and wallets. Through a single API, Yuno connects them to pay-ins, payouts, fraud prevention, KYC/KYB, and stablecoins globally, so they can operate everywhere. Agnostic by design and connected to 1,000+ payment methods and 460+ integrations in 190+ countries, Yuno optimizes acceptance rates, reduces costs, and strengthens security through specialized AI agents that learn from every transaction. Global brands including McDonald's, NetEase Games, GoFundMe, and Rappi run their payments on Yuno.

About The Role

Yuno is looking for a Staff AI Engineer to be the senior technical leader for Payments Intelligence - the unit building the AI agents and intelligence products that make payments smarter across the platform. You'll architect and build production AI-agent systems like AIDA and NOVA, shape how Yuno applies LLMs and agentic AI to real payment problems, and raise the technical bar for the engineers around you.

This is a hands-on AI leadership role at the frontier. You'll design agents that hold real conversations with customers, recover revenue, automate operations, and surface intelligence to merchants - all in a production, multi-market, compliance-sensitive environment. Your impact comes as much from setting the technical direction for agentic AI as from the systems you build.

What This Unit Owns

• Yuno Agents (AIDA & NOVA) - AIDA, the agent that retrieves payment data and answers technical questions for support and operations teams; and NOVA, the agents that recover revenue by turning failed payments into intelligent, multilingual customer conversations across channels
• AI Ops & Support - AI-driven automation that streamlines internal operations and customer support
• Client Intelligence - the AI and data products that surface insight and intelligence to Yuno's merchants

How AI Shows Up in This Role

• You're not adding AI to a product - you're building the AI that is the product: the agents, LLM pipelines, and intelligence systems at the core of Payments Intelligence
• AI is our default execution layer: you're expected to use AI-assisted tooling fluently in your own work, and to define how the unit designs, evaluates, and ships agentic systems responsibly

Your Contribution Will Be

• Agent architecture and technical leadership - own the architecture of Yuno's AI agents (AIDA, NOVA) and intelligence systems; set the technical direction for agentic AI and raise the bar for the team
• Production LLM and agentic systems - design multi-step agents with tool use, orchestration, memory, and retrieval-augmented generation (RAG), engineered for reliability and low latency at scale
• Conversational and multilingual experiences - build agents that hold real, dynamic customer conversations across channels (phone, WhatsApp) and 70+ languages, adapting to context and intent
• Evaluation, safety, and guardrails - define how the unit measures agent quality and safety, with rigorous evaluation, observability, and guardrails so agents behave reliably in a compliance-sensitive, multi-market environment
• Intelligence and data products - architect the client-intelligence systems that turn payment data into actionable insight for merchants
• AI Ops automation - build the AI-driven automation that streamlines internal operations and support
• Mentorship and cross-functional collaboration - mentor engineers and partner with Product, Data Science, and Staff Engineers across domains to ship complex, cross-team AI work

What Success Looks Like

Within your first 6-12 months, you've led the architecture of at least one core agent or intelligence capability, shipped agentic systems to production with real evaluation and guardrails behind them, and become the technical voice Yuno trusts on how to build AI agents responsibly at scale.

Skills You Need

Minimum Qualifications

• Extensive software engineering experience, with a track record building and shipping production LLM or AI-agent systems
• Deep expertise in agentic systems - multi-step agents, tool use, orchestration, memory, and retrieval-augmented generation (RAG)
• Strong LLM application skills - prompt engineering, evaluation, and guardrails for reliable, safe outputs
• Strong Python for AI/ML, plus solid backend engineering (Go and/or Kotlin) to productionize systems at scale
• Model serving and LLM inference, with the cloud infrastructure to run AI workloads in production (AWS or similar)
• Evaluation and observability for AI - hands-on with tools like LangFuse, LangSmith, Braintrust, or MLflow - plus solid automated testing and CI/CD
• Proven technical leadership - mentoring engineers, driving technical vision, and delivering complex, cross-team projects
• English - advanced proficiency, written and spoken

Preferred Qualifications

• Fine-tuning, RLHF, or model customization
• Vector databases (Pinecone, Weaviate, or FAISS) and embedding retrieval
• Building agent workflows with MCP servers or modern agent frameworks
• Conversational AI and speech (speech-to-text / text-to-speech) and multilingual systems
• Experience in the payments or fintech industry

Nice to Have

• Running multi-tenant AI platforms or GPU/resource management at scale
• Data pipelines and orchestration (Airflow, Prefect) and warehouses like Databricks, Snowflake, or BigQuery
• Spanish proficiency

Tech Stack

• Languages - Python (AI/ML), Go and Kotlin (platform services)
• AI & LLMs - LLM APIs and open models, agent frameworks, MCP, RAG
• AI evaluation & observability - LangFuse, LangSmith, Braintrust, MLflow
• Data & retrieval - vector databases, feature stores
• Messaging - Apache Kafka, SQS
• Databases - PostgreSQL, Redis
• Infrastructure - AWS, Kubernetes, Docker, Terraform
• Observability - Datadog, OpenTelemetry
• CI/CD - GitHub Actions, ArgoCD
• Version Control - Git / GitHub

What We Offer at Yuno

• Competitive Compensation
• Remote Work - you can work from everywhere
• Home Office Bonus - a one-time allowance to set up your ideal home office
• Work Equipment
• Stock Options
• Health Plan wherever you are
• Flexible Days Off
• Language, Professional, and Personal Growth courses

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses.
These tools assist our recruitment team but do not replace human judgment.
Final hiring decisions are ultimately made by humans.
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