Role: Application Specialist for Telecom OSS Data Mediation

Location: Helsinki, Finland

Employment type: Full-time

Experience: 6+yrs

Join a high-performing telecom engineering team as an L2 Support Engineer, where you will drive CI/CD automation, infrastructure modernization, and operational excellence across BSS/OSS systems. You will work on large-scale telecom platforms including billing, CRM, provisioning, and network management while enabling faster releases, high availability, and resilient operations. This role offers deep exposure to Kubernetes, cloud environments, automation frameworks, monitoring tools, and multi-vendor telecom ecosystems in an Agile and DevOps-driven environment.

Key Job Responsibilities:

• Monitor Netwiser and Zabbix services; triage incidents and resolve application-level issues.
• Ensure accurate collection and processing of call traffic volumes, quality metrics, and trend data for national and international routes.
• Maintain and enhance PHP-based components for mediation, reporting, and UI customization.
• Support integration with OSS/BSS systems for Service Assurance workflows and reporting.
• Generate reports for SLA compliance, traffic trends, and QoS metrics.

Experience & Skills Requirements:

Must have:

• Hands-on experience with CGI Netwiser for traffic and QoS monitoring.
• Strong PHP scripting skills for mediation and UI customization.
• Familiarity with Zabbix for infrastructure monitoring and alerting.
• Knowledge of ITIL processes and telecom OSS Service Assurance workflows.
• Understanding of fixed network technologies and call traffic metrics.
• Proficiency in Linux/Unix environments and troubleshooting.

Good to have:

• Experience with integration frameworks (REST APIs, Webhooks).
• Familiarity with TM Forum standards (eTOM, SID, ODA).
• Exposure to Elastic/Kibana or similar observability tools.

Success Metrics & Unique Selling Proposition (USP) of The Role:

• Faster and more reliable software delivery through automated CI/CD and containerized deployments.
• Improved system stability, uptime, and SLA performance in large-scale telecom environments.
• Strong impact on cost reduction and operational efficiency through automation and infrastructure-as-code.
• Ability to lead modernization of BSS/OSS platforms using Kubernetes, cloud, and advanced monitoring tools.
• Act as a key driver connecting development, operations, and architecture teams for DevOps excellence.

What we offer / What’s in it for you:

• Opportunity to work on large-scale telecom platforms with modern DevOps and automation technologies.
• Exposure to cloud, Kubernetes, monitoring ecosystems, and next-gen BSS/OSS modernization initiatives.
• Collaborative environment with cross-functional and global engineering teams.
• Continuous learning and career growth supported by certifications and complex project exposure.
• Ownership of strategic DevOps initiatives with direct impact on operational performance and delivery speed.

Apply now!

Send your CV together with the motivation letter to [email protected] We will go through the applications on an ongoing basis.

At TCS, we believe in building and sustaining a culture of equity and belonging where everyone can thrive. Our diversity motto is ‘Inclusion without Exception’. We encourage people with diverse backgrounds to apply for our positions.

About Tata Consultancy Services

Tata Consultancy Services is an IT services, consulting and business solutions organization that has been partnering with many of the world’s largest businesses in their transformation journeys. Its consulting-led, cognitive powered, portfolio of business, technology and engineering services and solutions is delivered through its unique Location Independent Agile™ delivery model, recognized as a benchmark of excellence in software development.

TCS in the Nordics & Finland

TCS has been operating in the Nordic countries since 1991. The company's Finnish, Swedish, Norwegian and Danish customers are served by a total of 20,000 experts. Our customers have chosen TCS as the best IT consulting service provider in the Nordics every year. TCS has also received the Top Employer recognition in Finland for Six years in a row.

For more information, visit www.tcs.com.