Senior Full-Stack Engineer — Build Cross-Border Payments Platform

Xe.com; Bracknell; On-site; GBP 75,000 - 110,000; Full time

Benefits offered by this job

Competitive Salary & Discretionary  +

23 days annual leave increasing with 1

Paid day off for your Birthday

4% employer pension contribution

Discounted Euronet ESPP

Life Cover

Income Protection & Critical Illness

Healthcare

Plumm Mental Health and Wellbeing

Volunteering day for a charity of your

A true inclusive culture

Job summary

Xe is rebuilding its cross-border payments platform in Bracknell, recruiting a senior full-stack engineer to own features end-to-end from API design to frontend experience and backend services. You will design and modernize the platform, ensuring production readiness and reliability while collaborating with product, design, and compliance teams.

You will work in a small engineering team with direct access to product and compliance, mentor mid-level engineers, and use tools like Copilot and

Qualifications

• 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; 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.

Responsibilities

• 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.

Skills

Vue.js

React

C# / .NET

SQL

Testing

Copilot / AI tools

AWS

SQS

DynamoDB

S3

ECS

Lambda

System design

Payments / FX domain

Technical leadership

Communication

Tools

Jira

Confluence

Postman

Redis

Memcached

Job description

Xe is rebuilding its cross-border payments platform in Bracknell, recruiting a senior full-stack engineer to own features end-to-end from API design to frontend experience and backend services. You will design and modernize the platform, ensuring production readiness and reliability while collaborating with product, design, and compliance teams.

You will work in a small engineering team with direct access to product and compliance, mentor mid-level engineers, and use tools like Copilot and