Module Lead Systems Administration

About Affinity

Affinity is pioneering new frontiers in AdTech: developing solutions that push past todayslimits and open new opportunities. We are a global AdTech company helping publishers discover better ways to monetize and enabling advertisers to reach the right audiences through new touchpoints. Operating across the US, Europe and Asia Markets with teams of575+ experts, we are buildingprivacy-first ad infrastructure that opens up opportunities beyond the walledgardens.

Type of role: Module Lead Systems Administration

Work Location: Mumbai

About the Job:

We are seeking a highly skilled and experienced professional in the systems administration domain. This is a key role that requires strong attention to detail, analytical skills, and the ability to work effectively in a fast-paced environment.

Responsibilities:

• Server and Infrastructure Management: Maintain, upgrade, and manage servers,software, hardware, networks, and tools necessary for efficient operations.
• Server Installation and Configuration: Administer the installation, configuration, and optimization of servers, including web servers and database servers.
• Automation and Process Improvement: Handle automation of services and processes to improve system efficiency and reliability. Should have knowledge on CICD, GIT, SVN.
• Performance Monitoring: Configure and monitor various performance measurement and monitoring services to ensure a healthy and efficient infrastructure.
• Troubleshooting and Issue Resolution: Diagnose and resolve problems quickly, troubleshooting issues and outages that mayoccur. Should have knowledge on usingtools like nmap, tcpdump, tcpflow, iptraf, netstat etc.
• Security Implementation: Ensure security through access control, backups, firewalls, and compliance with relevant regulations.
• Documentation: Regularly document all processes, incidents, technical insights, manuals, and IT policies related to the infrastructure and inform involved teams.
• Support for Developers: Provide support to developers by offering data insights, reports, analysis, and actionable recommendations related to the server infrastructure and application processes.
• Research and Innovation: Research and develop innovative solutions to enhance the architecture and create a better infrastructure based on industry trends.
• Linux Expertise: Possess strong familiarity with Linux operating systems, especially Debian, Infrastructure as Code, and applications, should have strong knowledge on shell scripting, familiarity with Perl and Python will be an added advantage.
• Monthly Patching and Security Fixes: Perform monthly patchingof Linux infrastructure to address security issues and vulnerabilities.
• Security Reporting and Monitoring: Deliver regular reports to security leadership on remediation efforts, implement continuous monitoring to measureand report on control areas like patching, hardening, audit and log configuration, and authentication mechanisms.
• Information Security Hardening: Follow information security hardening guidelines such as CIS to ensure a secure infrastructure, Hardening Apache, nginx,MySQL, PHP applications etc.
• Vulnerability Management: Assist in identifying and analyzing vulnerabilities, and work with asset owners to prioritize patch remediation, should have knowledge on using tools like Nmap, Nikto, and other pen test tools.
• Risk Assessment: Classify and prioritize the risk of vulnerabilities, considering mitigating factors and impacts of internal and external threats.

These responsibilities collectively aim to ensurethe smooth and secure functioning of the infrastructure, maintain system performance, and protect against potential security risks.

Required Skills

• 7+ years of industry experience handling *nix-based infrastructure as a System Administrator or DevOps engineer.
• Strong experience supporting and administering Linux (Debian and RedHat-based distributions).
• Ability to work in multi-datacenter, hybrid cloud, multi-server, large-scale environments.
• Knowledge of Google Cloud (GCP), AWS, and other cloud technologies, including containerization, clustering, and virtualization.
• Expertise in database servers and networks (LAN/WAN), strong TCP/IP knowledge, and experience with kernel upgrades.
• Strong expertise in Shell scripting. Python, Perl, or other scripting languages is a plus.
• Proficiency in scripting (Bash, Python) and automation tools like Ansible and Terraform for Infrastructure as Code (IaaC).
• Experience with DevOps tools such as Chef, Puppet, Ansible, etc.
• Advanced networking knowledge with Cisco switches/routers: VLANs, STP, OSPF/BGP routing, ACLs/firewalls, EtherChannel, and troubleshooting using Cisco commands.
• Experience with distributed data platforms like Cloudera Hadoop and Apache Spark is a plus.
• Strong understanding of security best practices, backup management, data encryption, IAM role management, firewall administration, security audits, and scheduled network scans.
• Experience handling installation and optimization of Apache, Nginx, Bind/DNS, Graylog, Elasticsearch, iptables, LDAP, VPN, Munin, SVN, and GIT.
• Bachelors degree or higher in Computer Science; any *nix certification is a plus.
• Excellent communication skills with the ability to tailor technical information to different audiences. Strong teamwork and self-driven attitude.