System/DevOps Engineer (m/f/d)

Telekom; La Coruña; Hybrid; EUR 55,000 - 75,000; Full time

Benefits offered by this job

Hybrid work model

Health insurance

Meal vouchers

Flexible working hours

Coursera training access

Job summary

T-Systems Iberia is seeking a System/DevOps Engineer to lead the technical integration and operation of a Converged Charging System on a Kubernetes‑based private cloud. You will design interfaces, monitor systems, and coordinate with international teams to ensure service excellence.

The role requires deep knowledge of OCS/CCS, container orchestration, and robust incident analysis skills to support production deployments and upgrades.

Qualifications

• Bachelor's degree in CS or related field.
• Experience with Kubernetes in private cloud environments.
• Experience with Online Charging Systems (OCS) and Converged Charging Systems (CCS).
• Strong incident analysis and root cause diagnosis skills.
• Familiarity with telecom protocols and API/interface design.

Responsibilities

• Develop technical concepts, system specs and interfaces for the OCS/CCS ecosystem.
• Install, configure, operate and continuously improve complex production systems.
• Monitor availability, performance, capacity and ensure resilience, failover.
• Analyze charging, rating, billing logic and related business rules.
• Collaborate with project teams, suppliers and cross‑functional international stakeholders.

Skills

Kubernetes on private cloud

Online Charging System

Converged Charging System

Container orchestration

Incident analysis

Capacity planning

Cross‑functional collaboration

Education

Bachelor's degree in CS or related field

Tools

Kubernetes

Docker

CI/CD pipelines

Monitoring/Logging tools

Job description

Job ID: 744000153444284System/DevOps Engineer (m/f/d)A Coruña, Bilbao, Gijón, Granada, Madrid, Reus, Seville, ValenciaProfessionalRegularT-Systems IberiaYour TaskThe DevOps team is responsible for the technical integration, production operation, lifecycle management and continuous development of the Online Charging System supporting prepaid voice and messaging services. Its scope includes system and interface design, monitoring, incident and problem analysis, release management, supplier coordination, upgrades, migrations and production rollouts. A key focus is the introduction of a new Converged Charging System from an external supplier on a Kubernetes-based private cloud. The team will be responsible for its technical integration, migration, operational readiness and future production operation. The team collaborates closely with project management, validation management, suppliers and the owners of connected partner systems in an international environment.ResponsibilitiesDevelop technical concepts, system specifications and interface designs for the Online Charging System and connected systemsInstall, configure, operate and continuously improve complex production systems and servicesMonitor availability, performance and capacity and ensure resilience, redundancy and failover capabilityPerform hands-on incident, problem and root cause analysis using logs, metrics and monitoring dataAnalyze and implement requirements related to charging, rating, billing and comparable business logicYour ProfileWe are looking for a DevOps Engineer with expertise in Kubernetes-based cloud infrastructure, telecom charging systems, and high-availability production operations. The ideal candidate will have deep technical knowledge in container orchestration, online charging systems, system integration, and incident analysis to support the technical integration and operation of a Converged Charging System.Must Have SkillsExpertise in container orchestration with Kubernetes on private cloud environmentsExperience with Kubernetes cluster deployment, configuration, and lifecycle managementDeep understanding of Online Charging Systems (OCS)Deep understanding of Converged Charging Systems (CCS)Knowledge of rating and billing logicUnderstanding of domain-specific telecom protocolsAbility to author technical specificationsAbility to design APIs and interfacesExperience with complex software integration with connected partner systemsAdvanced log and metric analysis skillsHands-on root cause diagnosis capabilitiesAbility to troubleshoot complex production incidentsExperience troubleshooting high-throughput telecom trafficMastery in engineering redundant systemsExpertise in failover mechanismsExperience with capacity planningProactive monitoring skills to guarantee high uptimeExperience managing software upgrades, migrations, and rolloutsExperience collaborating with external suppliersExperience working with cross-functional international teamsAbout UsT-Systems is part of the Deutsche Telekom Group, with around 30,000 employees worldwide. We create technology with purpose to generate a positive impact on society. We are looking for curious talent, eager to learn, take on challenges, and contribute ideas that transform our customers' experience.We trust people: we offer autonomy, continuous support, and a collaborative environment where you can grow without limits. We are one global team, guided by respect, integrity, and a passion for doing better every day.BenefitsWork environment & flexibilityInternational, dynamic and collaborative environmentT-Social: social initiatives (sports, community, health, ...)Hybrid work model (remote/on-site)Flexible working hoursGrowth & developmentCustomized training: access to Coursera to learn whatever you want, whenever you wantWeekly language classes (English & German)International Mentoring Sessions & Experience DaysCompensation & benefitsFlexible compensation plan (health insurance, meal vouchers, childcare, transport)TelemedicineLife and accident insuranceSocial fundWellbeing & time off26+ working days of vacation per yearFree access to specialist services (medical, legal, wellness)100% salary coverage during medical leaveApplication InformationIf you are looking for a new challenge, do not hesitate to send us your CV! Please send CV in English.Additional DetailsT-Systems Iberia will only process the CVs of candidates who meet the requirements specified for each offer.Job BenefitsHealth & InsuranceFlexible compensation plan (health insurance, meal vouchers, childcare, transport)TelemedicineLife and accident insurance100% salary coverage during medical leaveWork-Life BalanceHybrid work model (remote/on-site)Flexible working hours26+ working days of vacation per yearLifestyle & WellnessT-Social: social initiatives (sports, community, health, ...)Free access to specialist services (medical, legal, wellness)Social fundProfessional DevelopmentCustomized training: access to Coursera to learn whatever you want, whenever you wantWeekly language classes (English & German)International Mentoring Sessions & Experience Days