Senior Roaming Operations Engineer

Tieto

. Provide second-line support for Instant Roaming, Open-Connectivity Roaming (Roaming Hub), SMS Translator, Steering of Roaming, Managed PGW, and other related services .

Posted 9/30/2026full-timeRemote • Kyiv • GermanySeniorWebsite

Core Competencies

Role fit

Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates expertise in telecommunications with a strong understanding of network architecture, signaling protocols, and roaming scenarios. Capable of providing high-quality second-line support while managing incidents and collaborating effectively with cross-functional teams.

Highest-signal resume keywords

Network ArchitectureSS7/SIGTRANLTEGSM Call FlowsRoaming Scenarios

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

TelecommunicationsSignalingRoamingMobile Packet CoreITU/ETSI Standards5G NetworksVoLTEIMS

Soft Skills

Proactive ApproachOrganizational SkillsCustomer-FocusedAbility to Work Under PressureTeam Collaboration

Tools & Technologies

Cellusys Steering of RoamingLinuxDockerSplunkPython

Industry Keywords

International Carrier TelecomTelecommunications TechnologiesIncident ManagementService AvailabilityNetwork Rollout Projects

Tech Stack

Tools & technologies

DockerLinuxPythonSplunk

About the role

Key responsibilities & impact

Provide second-line support for Instant Roaming, Open-Connectivity Roaming (Roaming Hub), SMS Translator, Steering of Roaming, Managed PGW, and other related services
Monitor network and service availability and quality, performing proactive and reactive maintenance activities
Manage incidents and carry out planned maintenance work
Participate in the implementation of new services and network rollout projects in collaboration with engineering teams
Collaborate with Product Management, Presales, and other second-line customer support teams to gather information, logs, and traces, validate routing and data transfer, and ensure high service availability and quality
Work closely with vendors, monitor their performance, and ensure proper service delivery
Support customers worldwide with roaming-related issues and cooperate with mobile operators and Travel SIM companies
Demonstrate a strong understanding of network architecture and signaling protocols and interfaces
Assist with the training of new and existing team members
Support workload planning to ensure business continuity during holiday periods
Participate in an on-call rotation one week per month

Requirements

What you’ll need

Bachelor’s or Master’s degree in Electronics, Telecommunications, IT, ICT, or a related field
Minimum of 3–5 years of experience in telecommunications, primarily in signaling or roaming (mobile telecommunications or international carrier telecom)
Strong understanding of network architecture, SS7/SIGTRAN, LTE, GSM call flows, Mobile Packet Core call flows, and roaming scenarios
Familiarity with telecommunications technologies and ITU/ETSI standards
A high degree of initiative, autonomy, and commitment
Ability to work effectively in an international and multicultural environment
A proactive, self-driven approach, with the ability to identify and resolve issues independently
Ability to work both independently and as part of a team, collaborating closely with peers and colleagues
Ability to work effectively under pressure, stay well organized, and think outside the box
Results-oriented and customer-focused, with a commitment to delivering high-quality services
Strong organizational skills, with the ability to manage multiple projects simultaneously
Ability to work in a fast-paced environment and adjust priorities based on ad hoc requests
Upper-intermediate (B2) English proficiency or higher
Willingness and ability to travel internationally as required
Experience with the Cellusys Steering of Roaming platform is an advantage
Experience with 5G networks and/or VoLTE/IMS is an advantage
Good operational knowledge of Linux is an advantage
Knowledge of Docker is an advantage
Knowledge of IT tools such as Splunk and Python is an advantage
Background checks are performed on all final candidates

Benefits

Comp & perks

Professional growth
Meaningful projects
Open culture
Outstanding work-life balance
Flexible hybrid work model
Curiosity and learning as a lifestyle
International travel opportunities as required