Administrator (Support & Operations)

HCLTech · Switzerland

Job Summary

Unix:

Install, monitor, maintain, and upgrade UNIX/Linux system software across company servers and infrastructure platforms.
Create, administer, and maintain UNIX/Linux user accounts, privileged access controls, and access-management procedures in accordance with internal security standards.
Define, implement, and maintain standardized backup, recovery, and security policies to support operational resilience and regulatory compliance.
Plan, coordinate, test, and execute UNIX/Linux security patches, firmware updates, and operating-system upgrades through controlled maintenance windows and approved change-management processes.
Drive patch-compliance activities by identifying vulnerabilities, prioritizing remediation actions, validating successful implementation, documenting exceptions, and maintaining evidence required for audit and compliance purposes.
Coordinate secure patch-release activities with application owners, cyber-security teams, infrastructure teams, and change approvers to reduce operational risk and minimize disruption to business services.

Database:

Administer, monitor, and maintain the database environment, ensuring high availability, performance, and security for business-critical applications.
Performance Monitoring and Optimization: Monitoring system performance and implementing tuning strategies to ensure optimal database operation.
Perform database backup and recovery operations, including participation in Disaster Recovery (DR) tests to ensure data integrity and continuity.
Install, configure, and manage database systems (Oracle, MS SQL Server, DB2) and related components, such as ODA Oracle Appliances, Oracle RAC and DB2 HADR.
Troubleshoot and resolve database issues, conduct root cause analysis, and optimize performance through tuning and improvement strategies.
Collaborate with cross-functional teams to manage capacity requirements, implement security measures (e.g., Oracle TDE, data masking), and support operational workflows.
Security Management: Implement access controls and introduce company security policies to safeguard data integrity and confidentiality.
Vulnerability Management: Review, assess, prioritize, and remediate database-related vulnerabilities in coordination with application, infrastructure, and cyber security teams, ensuring risks are addressed within agreed remediation timelines.
Cyber Hygiene and Compliance Remediation: Drive remediation activities required to meet Firm cyber hygiene standards, internal control obligations, audit requirements, and regulatory expectations for database platforms.

Years of exp: Min 5 years
Unix Skills:

Experience in UNIX/Linux server administration and production infrastructure support.
Comprehensive knowledge of UNIX/Linux operating systems, network protocols, file systems, storage technologies, and enterprise infrastructure standards.
Sound understanding of high-availability architectures, disaster-recovery principles, and load-balancing technologies.
Advanced troubleshooting, capacity-planning, root-cause analysis, and risk-assessment capabilities in complex IT environments.
Experience with enterprise monitoring tools such as Nimsoft, Geneos, and New Relic.
Proven ability to configure, harden, and secure mission-critical UNIX/Linux servers in line with enterprise security baselines.

Operating system and tooling knowledge:

Database Skills:
Skills:

Hands-on experience in database administration, including the configuration and management of Oracle, MS SQL Server, and DB2 environments.
Proficiency in UNIX/Linux and Windows server operating systems, with scripting skills (e.g., shell scripts) for automation and troubleshooting.
Strong knowledge of database backup/recovery strategies, high-availability solutions (e.g., mirroring, RAC, HADR), and performance tuning.
Familiarity with security practices such as Transparent Data Encryption (TDE) and data masking in Oracle.
Strong understanding of vulnerability assessment, patch lifecycle management, remediation planning, and compliance tracking within enterprise technology environments.
Experience working with cyber hygiene remediation processes, risk exceptions, audit evidence, and control reporting in regulated or financial services environments.
Ability to work occasional evenings/weekends (for maintenance/DR tasks)