Full Stack Engineer Senior

Description

Xe is a cross-border payments platform. We help SMEs and consumers in the US, UK, Canada, Australia, and New Zealand collect, convert, hold, and send money across markets. Each year, over 300 million people use Xe for currency information and over 350,000 use us to send money overseas.

Today, we're rebuilding the platform layer behind cross-border payments for corporate and consumer clients. We're small enough that your code ships fast and your decisions matter, and Euronet Worldwide (Nasdaq: EEFT) backs us so the problems stay real‑scale.

We're hiring a senior full‑stack engineer who owns real problems end‑to‑end and shapes how the team builds, from API design and frontend experience through to backend services, production reliability, and launch. You already use AI as part of how you think, build, test, and ship.

You'll write code that moves money in production, design and modernize the platform across the stack, and lead delivery of customer‑facing features as Xe rebuilds its platform layer. You'll work in a small engineering team with direct access to product, design, and compliance, own architecture in your domain, lead design reviews, mentor mid‑level engineers, and partner with architects and team leads on cross‑domain decisions.

• Design and own features across the stack that move money and manage multi‑currency balances across a range of domains, including onboarding, KYC and KYB, payment initiation, FX, settlement, and other supporting services.
• Lead delivery of customer‑facing features that customers use every day, from the interface through to the services behind them.
• Own production health for your domain, including reliability, observability, on‑call, and incident response.
• Lead cross‑functional delivery with product, design, and compliance from problem framing through launch.
• Lead design reviews, set technical direction for your domain, and mentor mid‑level engineers.
• Use agentic coding tools (Copilot, Cursor, Claude Code, or equivalent) daily across the SDLC, and lead modernization from legacy services into the modern stack alongside architects and team leads in your domain.

Must‑have

• 6 to 10+ years building production web applications, end‑to‑end.
• Strong frontend proficiency with Vue.js, React, or equivalent.
• Strong backend proficiency in C# / .NET preferred; other OOP languages welcome (Java, Kotlin, Go, or equivalent).
• Solid SQL and relational database fundamentals.
• Writing and maintaining tests as part of how you ship.
• Daily use of agentic coding tools (Copilot, Cursor, Claude Code, or equivalent) across the SDLC.
• Production experience on AWS, including hands‑on deployment, CI/CD pipelines and modern deployment practices, and native services such as SQS, DynamoDB, S3, ECS, and Lambda.
• Strong system design and architecture experience, including service‑oriented or microservices and event‑driven patterns.
• Payments, FX, or regulated‑industry experience.
• Track record of technical leadership: mentoring engineers, leading design reviews, and making architecture decisions in your domain.
• Strong communication and collaboration across engineering, product, and design.

Nice‑to‑have

• Frontend fundamentals: responsive design, accessibility, web performance, and internationalization.
• Experience leading front‑end or platform modernization and migrations.
• Experience with caching solutions like Memcached or Redis.
• Experience using project management and documentation tools like Jira and Confluence.
• Knowledge of API testing tools such as Postman or Bruno.
• Writing automated tests alongside development with AI tools (Claude Code or equivalent).

• Annual performance‑related rewards: performance‑based annual bonus
• Employee Stock Purchase Plan (ESPP): open to all employees
• Car allowance: monthly car allowance (subject to Direction Level)
• Meal vouchers: 8€ per working day
• Preferential currency exchange rates: exclusive rates for employees
• Money transfer discounts: special discounts on transfers
• Annual salary review: performance‑based process
• Hybrid working model: 2 days per week WFH with flexible scheduling
• Extended vacation allowance: 25-30 days…