LanguageWire is a general leader in language and content services, dedicated to helping brands achieve their full global potential. Since our founding in 2000, we have continuously evolved and developed unique technology to facilitate seamless multilingual communication. Our worldwide network of language experts, coupled with an intuitive online platform, makes it effortless for brands to translate and manage multilingual content. We're launching a new team dedicated to modernizing and expanding one of our customer-facing tools — and we're looking for a Senior Full Stack Engineer to help build it from the ground up. The current stack is Vue.js on the frontend and Python on the backend, but we're planning a migration to .
NET in the near future. Because of this, we're looking for someone comfortable working across all three — Vue, Python, and .
NET — who can help drive that transition while continuing to ship new features. As the senior engineer, you'll take a leading role in architecture decisions, technical direction, and mentoring as the team grows. You'll be one of the founding members of a brand-new team, led by our Tech Team Lead. This means you'll have real influence over how the team is structured, how we work, and the technical foundations we build on — it's a rare chance to help define a team's culture and practices from the very beginning, rather than stepping into something already set. If you want to make a difference, make it with us by... ~ Developing and maintaining applications, including front-end interfaces, back-end services, and databases ~ Contributing to the architecture, design and implementation of new features and improvements ~ Implementing best practices for code quality,



testing and deployment automation ~ Ensuring high-quality software through active participation in code reviews ~ Actively engaging in sprint retrospectives, refinements, daily stand-ups, and other team processes ~ Taking full ownership of the products and solutions you develop, eliminating bugs early in the process through TDD/BDD and other tests ~ Leveraging AI-assisted development tools and workflows to increase engineering velocity, while maintaining code quality and rigor ~ Sharing knowledge and supporting fellow developers, QA professionals, and support teams ~ You take full ownership of products and solutions, having delivered several major features to production with measurable impact. ~ You share your expertise by mentoring mid-level and junior developers, helping them grow and succeed. ~ You contribute to improving team processes, code quality, and technical decision-making. What does it take to work for LanguageWire? Solid understanding of software architecture, design patterns, and best practices. ~ Extensive experience with C# and the .
NET ecosystem (.
NET Core/.
NET 6+, ASP.
NET Web API, etc.) ~ Experience with Python ~ Familiarity with asynchronous programming and performance optimization in .
NET ~ Responsible for front-end codebases using Vue.js and/or TypeScript, collaborating closely with full-stack and frontend developers ~ Sound understanding of frontend build tools and state management (Vuex, Pinia, or similar).



~ Experience with version control systems (e.g., Experience with automated testing frameworks (unit, integration, and end-to-end). ~ Comfortable working in agile development environments and participating in sprint planning, code reviews, and peer mentoring ~ DevOps

experience:
CI/CD pipelines, Infrastructure as Code (Terraform, Helm, etc.), Docker, Kubernetes, cloud services (Azure, AWS, or GCP). Proficiency with relational databases, particularly MSSQL and/or PostgreSQL ~ Hands-on experience with Entity Framework (EF Core) and LINQ ~ RabbitMQ, Kafka, Azure Service Bus) ~ Strong focus on testing practices (unit testing, integration testing, test automation) ~ Awareness of security best practices in software development ~ We take care of our people and initiate many social get-togethers from Friday Bars a to Summer or Christmas parties. 140 great colleagues in the Valencia office belonging to different business departments ~ For this role, we have a full-time option for remote work within Spain. Of course, you are always welcome at the office to collaborate and connect with your colleagues. ~ Private health insurance ~ Big kitchen with access to organic fruits, nuts and biscuits and coffee. ~ Social area and game room (foosball table, darts, and board games) ~ Bike and car parking We encourage authentic collaboration, invite feedback, and a positive social environment. Working at LanguageWire — why we like it: "Once the purpose & values project had been rolled out, I felt a stronger connection and more engaged. Within our team, we care for each other, help each other on tasks, projects and we value different opinions. Arpi, Application Support Team Le

📌 Full Stack Engineer/Agile Engineer (España)
🏢 LanguageWire
📍 España