Senior Java Backend Developer - Tieto Tech Consulting (m/f/d)

About the Position

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, JUnit
• Databases: PostgreSQL, Oracle
• Platform and tools: Kubernetes, Jenkins, Git, SonarQube, Jira, Confluence
• Architecture: Microservices and legacy monolith components; strong backend focus
• Frontend: React / TypeScript (minor exposure)

Responsibilities

• Design and implement backend services for telecom network management solutions
• Develop and extend TMF-compliant APIs (e.g. TMF‑633, TMF‑639)
• Implement resource inventory and service catalog exposure for external systems
• Work with complex network and OSS data models (slicing, network resources, configuration data)
• Develop microservices using Java 21 and Quarkus
• Integrate services with PostgreSQL and Oracle databases
• Support audit and optimization use cases (e.g. slicing audits, discrepancy detection)
• Ensure code quality through unit tests, CI pipelines, and SonarQube
• Collaborate within cross-functional teams using Jira and Confluence
• Communicate in English with product owners, architects, and project leads

Requirements

• 5+ years professional experience in Java backend development
• Strong experience with REST APIs and service-oriented architectures
• Solid knowledge of SQL and relational databases
• Experience with modern Java frameworks (Quarkus, Spring Boot, similar)
• Familiarity with CI/CD pipelines and code quality tools
• Comfortable working in existing product codebases, not greenfield only
• Fluent English (written and spoken)

Nice to Have

• Background in telecommunications or network management
• Experience with TM Forum APIs (TMF‑633, TMF‑639 or similar)
• Understanding of OSS / BSS systems
• Knowledge of 3GPP / 5G network concepts (slicing, NRM, gNBs, etc.)
• Experience working with network or radio-related data models
• Kubernetes / cloud-native experience beyond basic usage

We Offer

• Join a leading software and technology consulting company
• Work with a diverse and inclusive team
• Opportunity to innovate and empower customers with the latest technology

About the Company

We are Tieto - A leading software and technology consulting company. We provide customers across different industries with mission-critical solutions through our specialized software businesses Tieto Caretech, Tieto Banktech, and Tieto Indtech as well as Tieto Tech Consulting business.

Our around 14,000 talented vertical software, design, cloud, and AI experts are dedicated to empowering our customers to succeed and innovate with the latest technology.

Tieto’s annual revenue is approximately EUR 2 billion. The company’s shares are listed on the NASDAQ exchange in Helsinki and Stockholm, as well as on Oslo Børs.

Important Advisory Regarding Recruitment Fraud

Tieto has been made aware of fraudulent recruitment activities being carried out by individuals falsely impersonating our organization.

• Tieto only communicates via @tieto.com email addresses.
• We never ask candidates to pay fees or share financial details during recruitment.
• If you receive a suspicious message claiming to be from Tieto, don't respond - verify it via our official careers site.
• For more information visit Important Advisory Regarding Recruitment Fraud | Tieto Blog.