Senior Full-Stack Engineer – Payments Platform Lead

Xe.com; Bracknell; On-site; GBP 90,000 - 130,000; Full time

Benefits offered by this job

Competitive Salary & Discretionary Bon

23 days annual leave increasing with 8

Birthday Day Off

4% employer pension

Discounted Xe ESPP

Life & Income Protection

Healthcare

Mental Health & Wellbeing

Volunteering day

Job summary

Xe.com is seeking a senior full-stack engineer to own problems end-to-end from API design to backend services, with a focus on cross-border payments. You will design and ship customer-facing features, improve platform reliability, and mentor mid-level engineers in a smallteam structure.

You will work with product, design, and compliance to shape the platform, use AI-assisted tools daily, and help modernize services across the stack. This role emphasizes ownership and technical leadership.

Qualifications

• 6 to 10+ years building production web applications.
• Frontend proficiency with Vue.js/React or equivalent.
• Backend proficiency in C#/.NET or similar OOP languages.
• Solid SQL & relational database fundamentals.
• Writing and maintaining tests as part of shipping.
• Daily use of AI-assisted coding tools across the SDLC.
• AWS experience including deployment, CI/CD, and native services (SQS, DynamoDB, S3, ECS, Lambda).
• Strong system design and architecture experience with microservices/event-driven patterns.
• Experience in Payments, FX, or regulated industries.
• Proven technical leadership: mentoring, design reviews, architecture decisions.

Responsibilities

• Design and own features across the stack that move money and manage multi-currency balances.
• Lead delivery of customer-facing features from interface to services behind them.
• Own production health for your domain: reliability, observability, on-call, incidents.
• Lead cross-functional delivery with product, design, and compliance from framing to launch.
• Lead design reviews, set technical direction, mentor mid-level engineers.
• Use agentic coding tools daily and drive modernization of legacy services with architects.

Skills

Frontend frameworks

C# / .NET

SQL & relational databases

Testing & QA

Agentic coding tools

AWS & CI/CD

System design & architecture

Payments / FX domain

Technical leadership

Communication & collaboration

Tools

Copilot

Cursor

Claude Code

Postman

Job description

Xe.com is seeking a senior full-stack engineer to own problems end-to-end from API design to backend services, with a focus on cross-border payments. You will design and ship customer-facing features, improve platform reliability, and mentor mid-level engineers in a smallteam structure.

You will work with product, design, and compliance to shape the platform, use AI-assisted tools daily, and help modernize services across the stack. This role emphasizes ownership and technical leadership.