About the company
Our client is a global leader in information management, helping organizations use technology, data, and digital knowledge to transform the way they work. The company combines innovation, creativity, and collaboration to solve complex business and technology challenges for leading organizations worldwide.
With an AI-first, future-driven, and human-centered approach, employees have the opportunity to work on impactful enterprise technology solutions and contribute to the future of digital transformation. The culture values curiosity, teamwork, continuous learning, and practical problem-solving. This is an attractive opportunity for a technical professional who wants to work in an international environment and support sophisticated products used by enterprise customers.
What the job entails
As an Infrastructure Engineer / Technical Support Engineer, you will investigate and troubleshoot complex technical issues across operating systems, networks, LDAP and directory services, and authentication technologies. Based in Tokyo, you will provide hands-on technical support for enterprise products in a permanent position.
This is an investigative technical support role—not an operations or monitoring-only position. You will analyze incidents, review logs, check connectivity, isolate potential causes, and either resolve issues or escalate them with clear technical findings. Your work may involve Linux or Windows Server environments, DNS, SSL certificates, HTTP and HTTPS communication, load balancers, proxy servers, LDAP directories, and authentication flows.
You will collaborate with customers, internal teams, and escalation groups to drive issues toward resolution while applying structured troubleshooting and strong communication skills.
Key requirements
Professional hands-on experience with Linux—particularly SLES or RHEL-based environments—or Windows Server.
Ability to analyze operating system logs, manage services, investigate processes, check network connectivity, verify SSL certificates, and troubleshoot DNS resolution.
Practical experience with tools such as systemctl, journalctl, netstat or ss, nslookup, dig, ping, traceroute, and openssl.
Experience with Active Directory, eDirectory, OpenLDAP, Oracle Directory, Red Hat Directory Server, or a comparable LDAP technology.
Understanding of LDAP architecture, including distinguished names, relative distinguished names, organizational units, object classes, attributes, and search filters.
Working knowledge of at least one authentication technology, such as SAML, OAuth 2.0, OpenID Connect, Kerberos, or LDAP authentication.
Strong foundational knowledge of TCP/IP, DNS, HTTP, HTTPS, load balancers, and proxy servers.
Ability to determine whether an issue is most likely related to the operating system, network, DNS, SSL, directory service, identity provider, or service provider.
Experience in L2/L3 technical support, vendor support, product support, or escalation management is highly valued.
Experience with identity and access management solutions such as Microsoft Entra ID, Okta, Ping Identity, or similar platforms is a plus.