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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Java Software Engineer - **Company:** NTT Ltd. - **Location:** Madrid, Spain (Remote available) - **Contract:** Permanent contract - **Skills:** Java (Programming Language), Application Programming Interfaces (APIs), Artificial Intelligence, Amazon Web Services, Unit Testing, Big Data, Software Quality, Code Review, Continuous Delivery, Software Design Patterns, Distributed Systems, Multi-Factor Authentication, PostgreSQL, NoSQL, Object-Oriented Software Development, Programming Environments, Redis, E2e Testing, Prometheus, Software Deployment, SQL Databases, Strategies of Testing, Web Services, Multithreading, Grafana, Spring-boot, Caching, Kotlin, Integration Tests, Kubernetes, Apache Kafka, 3-tier Architectures, Api Management, Docker, Elk Stack, Golang, Programming Languages, Microservices - **Published:** August 28, 2026 - **Apply:** https://www.adzuna.es/contact-us.html ## About the Role + Effective communication skills, both verbal and written, with the ability to collaborate with multidisciplinary teams and articulate complex technical concepts to non-technical stakeholders. + A strong focus on testing + An understanding of object oriented design and standard design patterns + Strong experience of multi-threaded, 3-tier architectures, web services, caching, and dealing with event-driven pipelines + Willingness to learn and use different technologies and programming languages + First hand knowledge of Continuous Deployment tools and methodologies + Experience working with public cloud. AWS would be advantageous + Experience with SQL and NoSQL databases + Practical experience of deploying code in a modern programming environment using tools such as Docker, Helm and Kubernetes ## Description As an emerging leader in the $10B+ communications API market, we empower global brands to connect better with their customers, employees, and partners through transformative communications experiences. For example, Vonage API solutions empower organizations to build their custom omnichannel communications structure. This allows them to reach and engage customers on their preferred schedule and channel - including voice, video, and messaging. Think of a rideshare service instantly connecting with customers, hospital staff conducting remote monitoring, customers verifying their identity before completing a purchase, AI virtual agents servicing customers around the clock, and much more. Why this role matters: The Engineering team at Vonage is growing group of talented engineers. They face multiple challenges associated with high performance, distributed systems, and processing large volumes of data in real time. The Vonage Verify API team is looking at expanding its size, in order to accelerate our product development to support our growing customer base, with a particular focus on adding new channels, enhanced anti-fraud measures and integration with Networks APIs to our next-generation two-factor authentication platform. Our Engineers work on an exciting mix of both greenfield and existing projects, giving them an opportunity to explore new technologies. What you will do: + Create scalable microservices that will help support our impressive growth + Propose scalable, maintainable and cost effective solutions + Estimate the effort required to develop and deliver new product features + Implement and execute effective testing strategies, including unit tests, integration tests, and end-to-end tests, to ensure software quality and reliability + Design and develop approaches to measure, evaluate and improve service quality + Participate in code reviews, provide constructive feedback to peers, and actively contribute to maintaining a high standard of code quality and development practices + Contribute to the documentation of the components, design patterns, and the design system to facilitate knowledge sharing and onboarding of new team members + Stay up-to-date with industry trends, best practices, and emerging frontend technologies, and share knowledge and expertise with the development team to continuously improve our development processes and standards Tech Stack + Microservices architecture + Go, Java, Kotlin + Spring Boot, Webflux, Reactive + AWS + Kafka + Redis, PostgreSQL + Docker, Kubernetes, Helm + Grafana, Prometheus, ELK stack + Anything needed to achieve our goals, + Work closely with cross-functional teams such as Engineering, Operations, and Product Management to ensure seamless integration of new features and services with a focus on reliability, scalability, and performance ## Related Videos - [Leveraging Real time data in FSIs](https://www.wearedevelopers.com/videos/806-leveraging-real-time-data-in-fsis) - [Navigating the Corporate Jungle: Life as a Developer in a large Company](https://www.wearedevelopers.com/videos/621-navigating-the-corporate-jungle-life-as-a-developer-in-a-large-company) - [Reducing LLM Calls with Vector Search Patterns - Raphael De Lio (Redis)](https://www.wearedevelopers.com/videos/1714-reducing-llm-calls-with-vector-search-patterns-raphael-de-lio-redis) - [Go with the Flow: Stop the Leaks Before Your Memory's a Waterfall!](https://www.wearedevelopers.com/videos/100073-go-with-the-flow-stop-the-leaks-before-your-memory-s-a-waterfall) - [Inside Bitpanda's Tech Stack: Scaling a European Fintech Leader - Markus Dorner](https://www.wearedevelopers.com/videos/1979-inside-bitpanda-s-tech-stack-scaling-a-european-fintech-leader-markus-dorner) - [Accelerating Authentication Architecture: Taking Passwordless to the Next Level](https://www.wearedevelopers.com/videos/733-accelerating-authentication-architecture-taking-passwordless-to-the-next-level) ## Related Articles - [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) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [The Most Popular IT Jobs on the Market](https://www.wearedevelopers.com/magazine/376-the-most-popular-it-jobs-on-the-market) - [7 Most Popular Web Developer Jobs in Europe](https://www.wearedevelopers.com/magazine/163-7-most-popular-web-developer-jobs-in-europe) - [Where To Find Software Engineering Jobs](https://www.wearedevelopers.com/magazine/396-where-to-find-software-engineering-jobs)