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# Full Stack Software Engineer

- **Company:** Developmentxe
- **Location:** Bilbao, Spain (Remote available)
- **Salary:** €65,000.0 - €80,000.0
- **Contract:** Permanent contract
- **Skills:** Java (Programming Language), .NET Framework, Artificial Intelligence, Amazon Web Services, Amazon S3, JIRA, Automation of Tests, C Sharp (Programming Language), Relational Databases, Cursor (Graphical User Interface Elements), Amazon DynamoDB, Memcached, Systems Development Life Cycle, Oop Languages, Responsive Web Design, SQL Databases, Web Applications, Web Performance Optimization, Cloud Platform System, Postman, ReactJS, Backend, Documentation System, Vue.js, Kotlin, Front End Software Development, Amazon Simple Queue Service (SQS), Golang, Microservices
- **Published:** September 23, 2026
- **Apply:** https://www.adzuna.es/contact-us.html

## About the Role

SDLC, and lead modernization from legacy services into the modern stack alongside architects and team leads in your domain.What We're Looking ForMust-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).

## Description

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.What You'll DoDesign 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


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