About this role
Do you have a strong Java Backend Developer background, passion for problem-solving, and want to join one of the largest tech companies in the Nordics? Then this is the role for you!
We are looking for a Senior Java Backend Developer to join Tieto Tech Consulting to support the development and extension of COM5.Mobile, a mature network management and optimization platform used by major telecom operators. The role focuses on backend services, TM Forum APIs, and network-related data models, working with Micronova’s Product Development and Customer Value Teams.
Technology Stack
Backend: Java 21, Quarkus, REST APIs, JUnitDatabases: PostgreSQL, OraclePlatform and tools: Kubernetes, Jenkins, Git, SonarQube, Jira, ConfluenceArchitecture: Microservices and legacy monolith components; strong backend focusFrontend: React / TypeScript (minor exposure)
Responsibilities
Design and implement backend services for telecom network management solutionsDevelop and extend TMF-compliant APIs (e.g. TMF‑633, TMF‑639)Implement resource inventory and service catalog exposure for external systemsWork with complex network and OSS data models (slicing, network resources, configuration data)Develop microservices using Java 21 and QuarkusIntegrate services with PostgreSQL and Oracle databasesSupport audit and optimization use cases (e.g. slicing audits, discrepancy detection)Ensure code quality through unit tests, CI pipelines, and SonarQubeCollaborate within cross-functional teams using Jira and ConfluenceCommunicate in English with product owners, architects, and project leadsQualifications
5+ years professional experience in Java backend developmentStrong experience with REST APIs and service-oriented architecturesSolid knowledge of SQL and relational databasesExperience with modern Java frameworks (Quarkus, Spring Boot, similar)Familiarity with CI/CD pipelines and code quality toolsComfortable working in existing product codebases, not greenfield onlyFluent English (written and spoken)Would be an advantage
Background in telecommunications or network managementExperience with TM Forum APIs (TMF‑633, TMF‑639 or similar)Understanding of OSS / BSS systemsKnowledge of 3GPP / 5G network concepts (slicing, NRM, gNBs, etc.)Experience working with network or radio-related data modelsKubernetes / cloud-native experience beyond basic usage At Tieto, we believe in the power of diversity, equity, and inclusion. We encourage applicants of all backgrounds, genders (m/f/d), and walks of life to join our team, as we believe that this fosters an inspiring workplace and fuels innovation. Our commitment to openness, trust, and diversity is at the heart of our mission to create digital futures that benefit businesses, societies, and humanity.
Diversity, equity and inclusion | Sustainability | Tieto
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