Senior Full-Stack Developer - Project Gigabit (Angular / Java / Spring Boot) (m/f/d)

Role Summary

PROJECT OVERVIEW

Join our international team and help build software for one of Deutsche Telekom Group’s largest projects. Our solutions support around 30 million customers in Germany who request fiber network access, order products, and track fiber installation for homes and businesses.

The Gigabit Business System is a digital platform supporting end-to-end marketing, sales, ordering, and fulfillment processes for fiber connectivity. It enables presales before infrastructure rollout, customer-driven network expansion, real-time activation for connected homes, and other innovative services.

We work internationally across more than 30 agile teams. The project follows SAFe principles and is transitioning to LeSS. We deliver MVPs and continuously improve our products based on customer and internal feedback.

TECHNOLOGY STACK

• Java, Spring Boot
• JavaScript, TypeScript, Angular
• JUnit, Mockito, WireMock
• Maven, GitLab, PostgreSQL
• Sonar, Kibana, Grafana, Prometheus
• Docker, Kubernetes, Argo, Lens
• Camunda, BPMN, and AWS knowledge is an advantage

Responsibilities

We are looking for a Senior Fullstack Software Developer to join the Falcon scrum team. The role is primarily backend-focused, but you should also be willing to work on frontend tasks depending on the backlog. You will develop and maintain microservices for ordering and commissioning fiber internet connections and contribute to responsive, user-friendly web applications.

• Team: Sapsan / Falcon
• Skill level: Senior Backend Developer with frontend experience
• Working mode: Scrum / SAFe, transitioning to LeSS
• Language: English
• Location: Development and QA in Slovakia; PO and Process Designer in Germany
• Travel: International travel at least once per year
• On-call duty: Release support, including nights or weekends when required
• Microservice Development: Design and implement backend microservices using Java and Spring Boot

API Development: Develop and maintain REST APIs according to Deutsche Telekom IT REST Guidelines, including OpenAPI specifications, versioning, and breaking change management

• Process Orchestration: Work with BPMN process engines such as Camunda 7/8 or jBPM
• System Integration: Integrate systems through REST APIs and event-driven communication using Kafka or AMQ
• Resilience & Reliability: Apply retries, idempotency, circuit breakers, timeout management, and graceful failure handling
• Monitoring & Observability: Implement logging, metrics, monitoring, and distributed tracing
• Code Quality & Testing: Write unit and integration tests, review code, and support automated vulnerability scanning
• Frontend Development: Develop and maintain Angular applications with a focus on performance and responsiveness
• UI Implementation: Translate UI/UX designs into working frontend features

Requirements

YOU WILL SUCCEED IF YOU

• Have 5+ years of hands-on experience with Java and the Spring Boot framework
• Have experience with TypeScript/JavaScript, HTML5, CSS3, and Angular
• Understand CI/CD pipelines, DevOps practices, and change/configuration management processes
• Have experience with JUnit and are familiar with testing frameworks such as Mockito and WireMock
• Have a solid understanding of version control systems, particularly Git (GitLab), including pipeline configuration
• Possess strong SQL skills, especially with PostgreSQL
• Demonstrate excellent communication, analytical thinking, and teamwork skills
• Communicate confidently in English at a B2 level or higher
• Experience with code quality and static analysis tools such as SonarQube
• Knowledge of containerization and orchestration technologies such as Docker and Kubernetes
• Experience with Business Process Management (BPM) and workflow automation tools such as Camunda or jBPM
• Knowledge of AWS cloud services and architecture
• Experience working in Agile/Scrum environments

We are offering base salary depending on seniority level and previous experience of candidate. In addition to base salary we provide variable part and other financial benefits. Base salary will not be lower than 3100 € /brutto.

Benefits

WHY SHOULD YOU CHOOSE US?

We believe in balance between work and personal life. An attractive and extensive work-life balance portfolio guarantees lasting motivation for employees and thus a better quality of life, promotes physical and mental well-being and contributes to a positive work environment. All this with the aim of providing more freedom in reconciling work, career growth, private life and individual lifestyle. Therefore we offer to our employees over 25 different benefits to improve their personal and professional life in these areas:

• Financial benefits
• Benefits with focus on learning and development
• Benefits with focus on health and sport
• Benefits with focus on family and work – life balance

For more information about our benefits click to Benefits

• Please be informed that our remote working possibility is only available within Slovakia due to European taxation regulation.

About the Company

Our brand Deutsche Telekom IT Solutions Slovakia entered the life of Košice region in 2006 under the name of T-Systems Slovakia and ever since has been inextricably linked with the region when became one of the founding members of Košice IT Valley. We have managed to grow from scratch to the second largest employer in the eastern part of the country with more than 3900 employees. Our goal is to proactively find new ways to improve and continuously transform into the type of company providing innovative information and communication technology services.