Join a leading global telecommunications and technology company as a Technical Support & System Operations Engineer supporting mission-critical Business Support Systems (BSS) and Mobile Number Portability (MNP) services. As part of the BSS SRE & Operations Department, you will help maintain the systems that power next-generation telecommunications services used by millions of customers across Japan.

This is an excellent opportunity for junior IT professionals looking to build expertise in system operations, technical support, telecommunications infrastructure, UNIX/Linux environments, and enterprise application support while working within a highly innovative and collaborative technology organization.
Key Responsibilities

• Perform day-to-day BSS and MNP application operations in accordance with established Standard Operating Procedures (SOPs).
• Coordinate with external telecommunications operators to ensure smooth Mobile Number Portability (MNP) Port-in and Port-out processes.
• Provide first-line technical support by investigating, troubleshooting, and resolving BSS and MNP-related system incidents.
• Collaborate with system vendors and technical partners to analyze issues and implement effective solutions.
• Monitor operational backlogs and contribute to production stability, process optimization, and workflow automation initiatives.
• Support mission-critical telecommunications platforms through a 24/7 rotational shift schedule.
• Maintain accurate operational documentation and ensure compliance with operational standards.
• Assist with continuous service improvements across enterprise application and infrastructure environments.

Required Skills and Qualifications Experience:

• Experience in Technical Support, Application Operations, System Operations, IT Operations, or a related support environment.
• Strong troubleshooting and analytical skills with a proactive approach to diagnosing technical issues.
• Ability to work within a 24/7 rotational shift environment, including weekends and public holidays.
• Basic understanding of enterprise application support and production operations.
• Experience working within IT service delivery or operational support environments is advantageous.

Soft Skills:

• Excellent communication and collaboration skills with the ability to work effectively across technical teams, vendors, and business stakeholders.
• Customer-focused mindset with a strong interest in telecommunications and technology.
• Strong organizational skills and attention to detail when managing operational procedures and documentation.
• Positive attitude with a willingness to learn new technologies and continuously improve technical skills.
• Ability to remain calm and prioritize effectively in a fast-paced operational environment.

Language Requirements:

• Japanese: Native Level
• English: Business Level

Preferred Skills & Qualifications

• Basic knowledge of UNIX/Linux operating systems and command-line environments.
• Understanding of telecommunications networks, mobile infrastructure, or BSS platforms.
• Experience using ticket management systems or IT Service Management (ITSM) tools.
• Familiarity with Agile operational environments or Site Reliability Engineering (SRE) concepts.
• Interest in cloud infrastructure, automation, and enterprise monitoring technologies.

About the Company
Our client is a globally recognized telecommunications and technology company driving large-scale digital transformation initiatives from its Tokyo headquarters. The BSS SRE & Operations Department provides operational support for mission-critical B2B and B2C applications across hybrid cloud and on-premises environments.

Joining this innovative organization offers the opportunity to work on next-generation telecommunications infrastructure while supporting digital services relied upon by millions of users every day.
Why You'll Love Working Here

• Gain hands-on experience supporting large-scale telecommunications platforms and enterprise BSS systems.
• Build practical skills in UNIX/Linux, system operations, network infrastructure, enterprise application support, and production environments.
• Work alongside experienced engineers in an innovation-focused, international technology environment.
• Enjoy excellent career development opportunities with strong potential for future permanent employment.
• Modern Tokyo office with outstanding facilities and collaborative working culture.
• Exposure to cloud technologies, automation initiatives, and enterprise-scale IT infrastructure.
• Opportunity to develop expertise in one of Japan's fastest-evolving technology sectors.

Don't Miss Out - Apply Now!