Back-end Engineer (Senior)

Xe.com; Bracknell; On-site; GBP 100,000 - 150,000; Full time

Benefits offered by this job

Competitive Salary & Discretionary Bon

23 days annual leave increasing with1

Paid day off for your Birthday

4% employer pension contribution

Discounted Euronet ESPP

Life Cover, Income Protection & 1

Healthcare

Plumm Mental Health and Wellbeing

Volunteering day for a charity of your

Job summary

Xe.com is hiring a senior backend engineer in Bracknell to own problems end-to-end, from API design and data modeling through to service implementation, production reliability, and launch. You will use AI tools daily and help move money across platforms.

You'll design and modernize backend services, lead cross-functional delivery with product, compliance, and operations, mentor engineers, and collaborate with architects on cross-domain decisions.

Qualifications

• 6 to 10+ years building production backend services.
• Strong backend proficiency in C# / .NET; other OOP languages welcome.
• SQL and relational database fundamentals.
• Writing and maintaining tests.
• Daily use of agentic coding tools across the SDLC.
• Production experience with AWS, including CI/CD and AWS services.
• Strong system design and architecture experience (SOA/microservices).
• Payments, FX, or regulated-industry experience.
• Track record of technical leadership: mentoring engineers and architecture decisions.
• Strong written and verbal communication.

Responsibilities

• Design and own backend services that move money and manage multi-currency balances across domains.
• Lead cross-functional delivery with product, compliance, and operations from problem framing through launch.
• Lead the build of partner integrations and settlement infrastructure.
• Own production health for your domain: reliability, observability, on-call, incident response.
• Lead design reviews, set technical direction, and mentor mid-level engineers.
• Use agentic coding tools daily and drive modernization alongside architects and team leads.

Skills

Backend design

C# / .NET

SQL & Databases

Testing & CI/CD

AWS

System design

Leadership

Effective communication

Tools

AWS

Docker

Kubernetes

Git

Job description

Description

About Xe

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.

About This Role

We're hiring a senior back-end engineer who owns real problems end-to-end and shapes how the team builds, from API design and data modeling through to service implementation, 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 backend services the platform runs on, and lead delivery of new capability as Xe rebuilds its platform layer. You'll work in a small team with direct access to product, compliance, and operations, own architecture in your domain, lead design reviews, mentor mid-level engineers, and partner with architects and team leads on cross-domain decisions.

What You'll Do

• Design and own backend services 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 cross-functional delivery with product, compliance, and operations from problem framing through launch.
• Lead the build of the partner integrations and settlement infrastructure your domain depends on.
• Own production health for your domain, including reliability, observability, on-call, and incident response.
• 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.

What We're Looking For

Must-have

• 6 to 10+ years building production backend services, end-to-end.
• Strong backend proficiency in C# / .NET preferred; other OOP languages welcome (Java, Kotlin, Go, or equivalent).
• SQL and relational database fundamentals.
• Writing and maintaining tests.
• Daily use of agentic coding tools (Copilot, Cursor, Claude Code, or equivalent) across the SDLC.
• Production experience with 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 written and verbal communication.

Nice-to-have

• Experience with ledgers, double‑entry accounting, or other financial‑data systems.
• Experience hiring, interviewing, or onboarding engineers.
• Experience leading modernization or platform 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 and Bruno.
• Writing automated tests alongside development with AI tools (Claude Code or equivalent).

Perks & Benefits

• Competitive Salary & Discretionary Bonus
• 23 days annual leave increasing with service (capped at 28 days)
• Paid day off for your Birthday
• 4% employer pension contribution
• Discounted Euronet ESPP
• Life Cover, Income Protection & Critical Illness cover
• Healthcare
• Plumm Mental Health and Wellbeing
• Volunteering day for a charity of your choice

We want Xe to be a great place to work and to ensure that our communities are represented across our workforce. A vital part of this is ensuring we are a truly inclusive organization that encourages diversity in all respects.

Xe is an Equal Employment Opportunity employer. All qualified applicants will be considered for employment regardless of age, national origin, race, color, disability, religion, sexual orientation, gender identity or expression, or any other characteristic protected under applicable law. We are committed to providing reasonable accommodations to qualified individuals with disabilities. If you need assistance or an accommodation due to a disability, you may contact us at [e-mail].

The position responsibilities outlined above are intended to define the general contents and requirements to perform this job. It is not to be taken as a complete statement of responsibilities or requirements. This job description does not restrict the Company's right to assign or reassign duties and responsibilities to this job as needed.