---
title: 'Senior Backend Developer at Yuno'
canonical: 'https://feeny.ai/job/senior-backend-developer-yuno-europe-x3h4b99mcz5w'
type: 'job'
last_seen: '2026-09-13'
---

# Senior Backend Developer at Yuno

- **Company:** Yuno
- **Location:** Europe
- **Work type:** remote
- **Posted:** 2026-06-03
- **Last confirmed live:** 2026-09-13
- **Apply:** https://jobs.lever.co/yuno/09574e89-949a-451a-9ef6-efaa62d96b31

## Job description

Remote · Full Time · Individual Contributor · +5 Years of Experience Senior Backend Developer

## 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 Backend Developer to join the Checkout Team — one of our most critical squads, responsible for the core transaction processing engine behind our checkout flows at scale. You'll design and build the systems that handle millions of payment transactions globally, alongside a world-class engineering team in a fast-paced, high-impact environment. Our core backend stack is Kotlin and Go — experience with either is a strong plus, though we care most about solid engineering fundamentals and depth in payments. How AI Shows Up in This Role The checkout engine you build is where Yuno's smart routing and fraud-prevention agents act — your services carry the transactions those AI agents learn from and optimize on every payment AI is our default execution layer: you're encouraged to use AI-assisted tooling across design, implementation, testing, and reviews, and to bring it to our technical exercises. We care how you use it, not whether you do

## Your Contribution Will Be

High-performance backend services — design, build, and evolve backend services and APIs in Kotlin and Go, engineered for reliability, low latency, and massive scale Checkout payment flows — develop and maintain authorization, capture, refunds, reversals, and partial payments across multiple providers and regions Event-driven microservices — architect resilient microservices using event-driven patterns (Kafka, queues) to handle asynchronous payment processing with zero data loss Integration framework — strengthen and expand the framework that connects Yuno to PSPs, acquirers, and payment gateways across countries and complex payment rails Security and compliance — apply OWASP principles and engineering best practices to ensure security, privacy, and PCI-DSS compliance End-to-end ownership — own the full lifecycle of features, from technical design and implementation to monitoring and correct operation in production Technical excellence and collaboration — partner with Product, Compliance, and Business to turn real payment problems into elegant solutions, and shape the platform through code reviews, architecture decisions, and clean, well-tested code What Success Looks Like Within your first 6–12 months, you own checkout services running payment flows in production, you've contributed to the event-driven architecture that keeps processing reliable at scale, and the team counts on your judgment in design and code reviews.

## Skills You Need

## Minimum Qualifications

5+ years of professional backend development experience Strong proficiency in a modern, statically-typed backend language (our core stack is Kotlin and Go) Deep expertise with payment processing concepts Solid understanding of microservices architectures, including building and operating them in production Relational databases (PostgreSQL or similar) and data modeling for financial systems Containerization and cloud infrastructure (Docker, Kubernetes, AWS or GCP) Strong command of unit, integration, and contract testing English — fluent written and verbal

## Preferred Qualifications

Experience with Kotlin and/or Go (Golang) — our core backend stack — and Spring Boot / WebFlux Experience in a fintech, neobank, or payment orchestration environment Hands-on experience with Kafka or other event streaming platforms Familiarity with PCI-DSS, PSD2, or 3DS authentication frameworks Observability tooling such as Datadog, OpenTelemetry, or distributed tracing

## Nice to Have

Knowledge of network tokenization, smart routing, or payment optimization strategies Prior work at a high-growth startup operating across multiple markets Spanish proficiency Tech Stack Languages — Kotlin, Go (Golang), Java Frameworks — Spring Boot, Spring WebFlux; Go standard library 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

## About Yuno

## Company Overview
- **One-liner**: Yuno is an AI-native payment orchestration platform that connects merchants to over 1,000 payment methods globally through a single API, powered by intelligent agents for routing, fraud prevention, and revenue recovery.
- **Entity Type**: Private (Seed $10M & Series A $25M – total $35M)
- **Headquarters**: New York, United States (with regional HQ in Doha, Qatar)
- **Founded**: 2021
- **Founders**: Juan Pablo Ortega & Julián Núñez

## Core Business
- **Primary industry**: Payment orchestration / Fintech infrastructure.
- **Target customers**: B2B – global merchants and enterprises of all sizes (e.g., McDonald’s, Rappi, Uber, GoFundMe, Viva Aerobus, NetEase).
- **Mission**: Help businesses simplify payment management and unlock new revenue streams by leveraging deep industry knowledge, cutting‑edge technology, and AI.

## Products & Services
- **Yuno Payments Orchestration Platform** (SaaS/API): A single, no‑code integration that connects to 1,000+ payment methods, PSPs, anti‑fraud providers, and acquirers across 190+ countries and 180+ currencies.
- **AI‑Powered Smart Routing**: Real‑time routing agent that selects the optimal processor per transaction based on performance, cost, and geography – delivering up to 7% uplift in approval rates.
- **Payments Concierge**: AI monitoring agent that analyses payment stacks, surfaces issuer‑level rejection reasons, and recommends actions via Slack or WhatsApp.
- **Fraud Prevention Suite**: Tools including tokenization, 3D Secure, custom fraud rules, and one‑click integration with fraud detection providers.
- **Predictive Analytics**: Real‑time dashboard with AI‑driven anomaly detection and trend identification.
- **Payouts & Stablecoins**: Support for payouts and stablecoin transactions through the same unified API.

## Market Standing
- **Valuation**: Not publicly disclosed.
- **Key Metric**: Annual revenue estimated at $3.5 M (source: LinkedIn); the platform processes **1 B+ transactions yearly**.
- **Notable Investors**: Kaszek & Monashees (seed); Andreessen Horowitz, Tiger Global & DST Global Partners (Series A).
- **Growth Signals**:
  - Headcount of 246 employees (+57.6% YoY), operating across 32 countries.
  - Offices/teams in Colombia, Brazil, Singapore, Mexico, Argentina, and the UK.
  - Named one of the world’s Top FinTech Companies by CNBC, Statista, and CB Insights.
  - Expanding rapidly across APAC, EU, Middle East, and Africa.

## Competitive Advantages
- **Single API for the entire payment lifecycle** – pay‑ins, payouts, fraud, reconciliation, and stablecoins – greatly reducing integration overhead.
- **AI‑native agents** that autonomously route, retry, and recover transactions, continuously optimising approval rates and reducing costs.
- **No‑code provider switching** – merchants can enable or disable payment methods without development cycles, accelerating market entry.
- **Deep global coverage** – 1,000+ providers in 190+ countries with local compliance built in.

## Strategic Focus
- **Global expansion**: Deepening presence in APAC, EU, the Middle East, and Africa while maintaining strength in Latin America.
- **AI‑driven product innovation**: Continued investment in AI agents for payment optimisation, fraud prevention, and actionable intelligence.
- **Enterprise adoption**: Targeting large‑scale merchants with complex, multi‑market payment stacks, evidenced by partnerships with brands like McDonald’s and Uber.

## Why Work Here
- **Culture**: Described as dynamic, innovative, and collaborative – team members are “encouraged to keep learning, explore new tools like AI, and take ownership of projects.”
- **Work model**: **100% remote‑first** – employees work from over 15 nationalities across 32 countries.
- **Perks & growth**: Emphasis on wellness, accountability, and fast learning; heavy investment in AI tools and continuous education.
- **Engineering focus**: Active hiring for Senior Backend, AI, Security, Data Platform, and Site Reliability roles – strong technical challenge and ownership.
- **Transparency**: Open‑source‑style internal communication; plain‑language dashboards for engineers to see real‑time payment data.

## Sources
1. [y.uno – About](https://y.uno/en/about)
2. [y.uno – Careers](https://y.uno/en/careers)
3. [y.uno – Product](https://y.uno/en)
4. [Lever – Yuno Careers](https://jobs.lever.co/yuno)
5. [LinkedIn – Yuno Company Profile](https://co.linkedin.com/company/yunopay)

## Other roles at Yuno

- [Machine Learning Engineer](https://feeny.ai/job/machine-learning-engineer-yuno-europe-qk68kdrz5rgw) — Europe
- [Sales Development Representative](https://feeny.ai/job/sales-development-representative-yuno-mexico-4xkdpt8yp39z) — Mexico
- [Partnerships Manager - North America](https://feeny.ai/job/partnerships-manager-north-america-yuno-americas-6jgjvefw5ass) — Americas
- [Staff AI Engineer, Payments Intelligence](https://feeny.ai/job/staff-ai-engineer-payments-intelligence-yuno-europe-sxdjp15hh9a9) — Europe
- [Staff Engineer - Money, Risk & Payment Ancillaries](https://feeny.ai/job/staff-engineer-money-risk-payment-ancillaries-yuno-europe-m1kq2gzzpbqb) — Europe
- [Staff Engineer - Trust & Vault](https://feeny.ai/job/staff-engineer-trust-vault-yuno-europe-8b7fhehc0cm0) — Europe
- [Legal Business Partner, EMEA](https://feeny.ai/job/legal-business-partner-emea-yuno-europe-y4fxqjnyynw0) — Europe
- [Director of Sales & Business Development - Financial Services (APAC)](https://feeny.ai/job/director-of-sales-business-development-financial-services-apac-yuno-apac-60xnhejrj3x3) — APAC
- [Sales Engineer](https://feeny.ai/job/sales-engineer-yuno-americas-nwxwmqnkn4x2) — Americas
- [Senior Corporate IT Engineer](https://feeny.ai/job/senior-corporate-it-engineer-yuno-europe-mmf7w1a45hvd) — Europe