Tieto Tech Consulting (MentorMate) is seeking a highly skilled Middle Java Full Stack Developer to join a telecom-focused project with BICS. This is a remote position with Sofia, Bulgaria as the base location. You will design, develop, and maintain scalable applications using Java and modern frontend technologies, while leading by example and mentoring a development team. You will drive technical discussions, contribute to architecture decisions, collaborate with stakeholders, and deliver clean, well-tested code with end-to-end ownership of features. Requirements include 2+ years of professional software development using Java, strong experience with Java 17+ (Spring, Spring Boot, Hibernate, JPA), solid knowledge of JavaScript and React, API design, and proficiency with relational and NoSQL databases. A strong understanding of design patterns, clean code, testing practices, Agile/Scrum experience, and excellent English communication are essential. You should be comfortable travel abroad for business trips. Nice-to-have skills include microservices, cloud and cloud-native experience (AWS preferred; Azure or Google Cloud also valuable), OSS/BSS integrations, CAMARA/GSMA standards familiarity, Test-Driven Development, and performance tuning. Personal qualities include a leadership mindset with a hands-on approach, proactivity, analytical thinking, and the ability to work well in a team and estimate work accurately.

Tieto Tech Consulting (MentorMate) is seeking a highly skilled Middle Java Full Stack Developer to join a telecom-focused project with BICS. This is a remote position with Sofia, Bulgaria as the base location. You will design, develop, and maintain scalable applications using Java and modern frontend technologies, while leading by example and mentoring a development team. You will drive technical discussions, contribute to architecture decisions, collaborate with stakeholders, and deliver clean, well-tested code with end-to-end ownership of features. Requirements include 2+ years of professional software development using Java, strong experience with Java 17+ (Spring, Spring Boot, Hibernate, JPA), solid knowledge of JavaScript and React, API design, and proficiency with relational and NoSQL databases. A strong understanding of design patterns, clean code, testing practices, Agile/Scrum experience, and excellent English communication are essential. You should be comfortable travel abroad for business trips. Nice-to-have skills include microservices, cloud and cloud-native experience (AWS preferred; Azure or Google Cloud also valuable), OSS/BSS integrations, CAMARA/GSMA standards familiarity, Test-Driven Development, and performance tuning. Personal qualities include a leadership mindset with a hands-on approach, proactivity, analytical thinking, and the ability to work well in a team and estimate work accurately.