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Tieto

Junior Telco Engineer

Tieto

. Provide L1 network support activities for voice and mobile services 24x7 .

Posted 11/5/2026full-timeRemote • Lviv • UkraineJuniorWebsite

Core Competencies

Role fit
Core Competencies

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

Demonstrates expertise in L1 network support for voice and mobile services, with a strong focus on fraud prevention and resolution within the telecom industry. Proficient in GSM network structure, signalling protocols, and network performance analysis.

Highest-signal resume keywords
GSM Network Structure KnowledgeSignalling Protocol Monitoring Tools ExperienceFraud Prevention Domain ExpertiseNetwork KPI AnalysisBachelor’s Or Master’s Degree In Computer Science

ATS Keywords

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Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills
GSM Network StructureSignalling In GSM NetworksMTP ProtocolISUP/SIP ProtocolSCCP ProtocolTCAP ProtocolVoice Call FlowsSMS FlowsIP Network PrinciplesFraud Detection Systems
Soft Skills
Good Written And Spoken EnglishCustomer CommunicationProblem Solving
Tools & Technologies
QoS ToolsProtocol AnalysersTrace Analysis Tools
Industry Keywords
TelecomWholesale Telecom BusinessFraud PreventionNetwork SupportAgile Development Process

About the role

Key responsibilities & impact
  • Provide L1 network support activities for voice and mobile services 24x7
  • Ensure reactive repair activities with customers, suppliers, and third parties worldwide
  • Monitor and investigate fraud events using internal fraud detection systems, QoS tools, and other tools
  • Identify root causes and take decisions and resolution measures
  • Define and implement improvements in fraud prevention services delivered to BICS customers
  • Communicate with customers and suppliers to guarantee complaint resolution while respecting SLAs
  • Work on a project for BICS, part of Proximus Global
  • Collaborate and learn within an agile end-to-end development process

Requirements

What you’ll need
  • Bachelor’s or Master’s degree in Computer Science, IT, Telecom or equivalent
  • 1+ year of experience in the operation of mobile or fixed networks as an engineer
  • Knowledge of GSM network structure
  • Knowledge of signalling in GSM networks
  • Knowledge of MTP, ISUP/SIP, SCCP, and TCAP protocol stacks
  • Knowledge of voice call/SMS flows and IP network principles
  • Knowledge of the fraud prevention domain and wholesale telecom business is an asset
  • Experience with signalling protocol monitoring tools, protocol analysers, and trace analysis
  • Knowledge of network KPIs and analysis of statistics and reports
  • Good written and spoken English
  • Willingness to travel internationally as required
  • Background check required for final candidates

Benefits

Comp & perks
  • Professional growth
  • Meaningful projects
  • Open culture
  • Outstanding work-life balance
  • Flexible hybrid work model
  • Opportunities to create the future of a growing, fast-developing sector
  • Learning and development through continuous unlearning and relearning
  • Agile end-to-end development process
  • Diversity, equity, and inclusion-focused workplace