> Markdown version of [/jobs/ext/1928109-java-java](https://www.wearedevelopers.com/jobs/ext/1928109-java-java). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Java Java - **Company:** Unosquare - **Location:** Lugo, Spain - **Contract:** Permanent contract - **Skills:** Java (Programming Language), .NET Framework, Junit, Openapi, Spring-boot, Technical Debt, Backend, Low Latency, Front End Software Development, Api Design, Software Coding, Restful APIs - **Published:** August 5, 2026 - **Apply:** https://www.buscojobs.com.es/java-java-en-lugo-ID-366041869 ## About the Role * Ability to lead, mentor, and communicate with clients * Mixed Java/. NET environment experience * Ability to work independently and navigate ambiguity * Strong problem-solving for high-volume, low-latency systems ## Description Experteer Overview In this Java Tech Lead role, you will guide the technical direction of backend services for a digital banking experience, combining hands-on engineering with architectural ownership.You'll shape standards, mentor the team, and drive core banking integrations, payments, and fraud/security workflows within the Backbase Journeys Architecture.You'll be the primary technical contact for the backend team and client-facing discussions, balancing delivery with architecture ownership.This role focuses on building secure, high-volume systems that scale with the business.Compensaciones / Beneficios* Lead technical design and architecture decisions for backend services* Set coding standards and best practices across the Java backend team* Lead architectural discussions and reviews* Identify technical debt and plan remediation* Mentor engineers and support onboarding/evaluation* Serve as primary technical contact for client conversations, communicating difficult news when needed* Design, build, and maintain backend services using Java 17+ and Spring Boot* Lead core banking integrations (Jack Henry Symitar) and ACH/payments processing* Architect and oversee fraud and security services* Design systems for high-volume, low-latency processing* Build and document REST APIs (OpenAPI) for frontend/mobile use* Drive test coverage (JUnit)* Oversee select .NET services (Core/Framework 4.8) troubleshooting production issuesResponsabilidades* Deep Java backend experience (Java 17+)* Spring Boot expertise* Experience with core banking integrations (Jack Henry Symitar)* Payments and ACH processing knowledge* Fraud and security service integration* REST/OpenAPI API design and documentation* Ability to lead, mentor, and communicate with clients* Mixed Java/.NET environment experience* Ability to work independently and navigate ambiguity* Strong problem-solving for high-volume, low-latency systemsRequisitos principales* ## Related Videos - [Developing the Backend with Stefan Lingler, CTO at Shpock](https://www.wearedevelopers.com/videos/100360-developing-the-backend-with-stefan-lingler-cto-at-shpock) - [For the REST of us: API First and Conway’s Law](https://www.wearedevelopers.com/videos/1932-for-the-rest-of-us-api-first-and-conway-s-law) - [How Unit Testing Saved My Career](https://www.wearedevelopers.com/videos/1642-how-unit-testing-saved-my-career) - [Modern Java](https://www.wearedevelopers.com/videos/1202-modern-java) - [Contract-First Frontend: Scaling Reliable UIs with OpenAPI and AI](https://www.wearedevelopers.com/videos/1995-contract-first-frontend-scaling-reliable-uis-with-openapi-and-ai) - [OpenAPI meets OpenAI](https://www.wearedevelopers.com/videos/1150-openapi-meets-openai) ## Related Articles - [Top 10 Java Libraries](https://www.wearedevelopers.com/magazine/364-top-10-java-libraries) - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [93 Java Interview Questions You Should Prepare For](https://www.wearedevelopers.com/magazine/14-93-java-interview-questions-you-should-prepare-for) - [Java Basics](https://www.wearedevelopers.com/magazine/122-java-basics) - [The 7 Most Popular Backend Frameworks for Developers](https://www.wearedevelopers.com/magazine/403-the-7-most-popular-backend-frameworks-for-developers) - [6 Reasons to Use Java For Your Next AI Project](https://www.wearedevelopers.com/magazine/111-6-reasons-to-use-java-for-your-next-ai-project)