Senior IoT Specialist (m/f/d) T Hub

T-Mobile; Województwo mazowieckie; Hybrid; PLN 120,000 - 180,000; Full time

Benefits offered by this job

Medical package

Life insurance

Free parking space

Flexible hybrid work model

Additional day off on birthday/name=

Training platforms access

Job summary

T- Hub Polska in Warsaw seeks a Senior IoT Specialist to support the IoT Operations team in Germany, focusing on operational aspects of the Deutsche Telekom M2M/IoT network and services. You will help troubleshoot, configure, and optimize service delivery across the lifecycle.

The role requires 2–3 years in NT/IT, knowledge of mobile data services, IP networks, and IPVPN/IPSEC, plus strong English skills for international collaboration and vendor/customer communication.

Qualifications

• Bachelor studies in Telco/IT environment or communications engineering.
• 2–3 years of professional NT/IT experience, preferably in mobile data services.
• Good English communication (speaking and writing).

Responsibilities

• Analyze customer incidents using network tools and performance counters.
• End-to-end testing of IPVPN/APN connections with test devices and SIM cards.
• Handle incident/problem tickets in SM/CRM tools and process changes via Jira/Confluence.
• Maintain IPVPN setups and document configurations in support systems.
• Provide on-call support up to 5 times per year and occasional night shifts.

Skills

Mobile networks

ePC background

IPVPN/IPSEC

DNS/RADIUS/DIAMETER

Wireshark protocol analysis

IPv4/IPv6

DHCP

Troubleshooting

English communication

Education

Bachelor's degree in Telco/IT

Tools

Wireshark

Job description

Job ID: 3602579Senior IoT Specialist (m/f/d) T HubWarsawProfessionalApplication deadline: 02.12.2026Regular (Part Time Possible)T-Hub PolskaYour TaskYou will work closely with IoT Operations team in Germany responsible for operational aspects of the Deutsche Telekom M2M/IoT network and services.The task of the Service Quality Engineer is the service configuration and troubleshooting of M2M services for Business Market Europe/World-wide customers in its entire lifecycle.Telco Engineer for ePC connectivity area (APN & IPVPN / IPSEC)Business ServicesHigh level responsibility overview:Coordination of troubleshooting and problem solving in multinational environmentDefinition of service quality KPIs reflecting service quality and customer experience (e.g. success/response rate, response/roundtrip time, availability, stability, DL/UL speed, utilization)Documentation of High Level E2E service architecture/chain including responsibility splitRegular updates of Knowledge Base, On-Call procedures, Expert Advices.Being Technical contact person for internal and external partners and Customers in the area of responsibility.Support for SLA/OLA & ITIL processes development and optimization.Support for E2E monitoring planning & optimization (Sigos/GlobalRoamer).Support for new service design and implementation – to achieve operational readiness before commercial service launch.Daily tasks overview:Analysis of customer incidents using various network tools (e.g. Elastic/Protocol Analyzer).Analysis of service behavior based on available monitoring and performance counters.Handling of incident / problem tickets in SM / CRM tools (e.g. HP Service Manager)End-to-end support of new setups/changes/cancellations between IP VPN customer and Telekom technicians. (IPSEC tunnel setup, APN setup - basic testing & troubleshooting)End-to-End testing of IPVPN / APN connections with different test-devices and sim cards – change validation process.Processing of orders / changes via ticket-systems (SM / CRM tools).Processing of Jira demands/orders via Kanban/Sprint logic (Atlassian Jira / Confluence).Preparation of the priority list for new IPVPN establishments/changes/terminations – change prioritization / backlog handling.Maintenance and Documentation of IPVPN Setup in support systemsOther:On-call support ability – up to 5 times per year (1 week on-call)Maintenance during nightshift – up to 6 times per yearBusiness trips ability – up to 3 times a year1-2 office days per week (Warsaw)Your ProfileYour Profile:Education - Bachelor studies in the Telco/IT environment, or communications engineering,Practice - At least 2-3 years professional experience in the NT / IT environment ideally in the field of mobile data services / InternetLanguage skills:English - good communication skills in speech and writingTech skills:Basic - Mobile Network topology and services understanding (2/3/4/5G),Medium - ePC background – knowledge about: APN, DNS, Radius, DiameterMedium - networking – IP technology (e.g. IPv4, IPv6), DHCP, sub-net configuration, routing check, network issue troubleshooting, protocol analysing with WiresharkAdvanced – IPVPN / IPSEC tunnel setup and maintenanceSoft skills:Collaboration in international environment,Accountable approach for a service availability and quality,Communication with different vendors and customerswillingness to learn company-specific tools and solutionsAbout UsBenefits:Stable employment based on employment contract,Medical package and life insurance,Access to training platforms: Percipio, Coursera, Rodos,Benefit platform,Additional day off on birthday/name day,Free parking space,Flexible hybrid work modelOur offer for you:Working at T‑Mobile’s T Hub allows you to develop in an innovative tech environment, shaping modern AI, cloud and automation solutions. You’ll collaborate within diverse, international teams and work with cutting-edge technologies, benefiting from a culture of continuous learning and development.Job BenefitsHealth & InsuranceMedical packageLife insuranceOffice PerksFree parking spaceBenefit platformWork-Life BalanceFlexible hybrid work modelAdditional day off on birthday/name dayProfessional DevelopmentAccess to training platforms: Percipio, Coursera, Rodos