Senior Systems Administrator

TeleSign

(Marina del Rey, California)

Full Time

Job Posting Details

About TeleSign

TeleSign is the leader in Mobile Identity solutions, helping customers secure more than 3.5 billion end user accounts worldwide & prevent registration fraud.

Responsibilities

Design, implement and maintain the server farms and voice/messaging infrastructure.
Manage the redundancy and failover systems.
Provide regular status updates on projects, including progress updates and identification of technical risks and issues associated with them.
Provide technical guidance and training to other staff members within the organization.
Tune and monitor application and operating system performance.
Maintain the security and integrity of the network and systems.
Support production systems, analyze problems, and configure systems within the distributed computing environment.

Ideal Candidate

- Extensive experience building and supporting mission-critical server farms in 24X7 environment.
- 8+ years designing, analyzing, troubleshooting, and resolving issues with Linux server farms including application, firewall and routing issues.
- 5+ years supporting multi-tier Internet application platforms, especially service-oriented architecture.
- 5+ years experience building and supporting VMware systems.
- Experience building and supporting Microsoft Windows Server systems.
- Significant experience with VOIP including Asterisk, SIP including tuning and troubleshooting.
- Thorough understanding of VLANs, IPSec, LAN/WAN routing, NAT/PAT, firewalls, fail-over is required.
- Extensive experience working with automation tools such as Puppet or Chef, certification preferred.
- Experience with telecom SMS messaging protocols is a plus.
- Deep knowledge of MySQL, MongoDB desired.
- Expert in datacenter (storage & compute)  resource allocation, planning, sizing and optimizing.
- Ability to work with others well and participate on cross-technology teams.
- Must be able to multitask, prioritize tasks, delegate task-level jobs to peers in the Systems Administration group, be a self-starter, quick learner and be extremely organized.
- Ability to speak and write clear English in order to create concise but clear documentation.
- Excellent interpersonal, communications and organizational skills with ability to lead team meetings, gather requirements, and arrive at technical decisions.
- Bachelors degree in Computer Science or equivalent.

Extensive experience building and supporting mission-critical server farms in 24X7 environment.
8+ years designing, analyzing, troubleshooting, and resolving issues with Linux server farms including application, firewall and routing issues.
5+ years supporting multi-tier Internet application platforms, especially service-oriented architecture.
5+ years experience building and supporting VMware systems.
Experience building and supporting Microsoft Windows Server systems.
Significant experience with VOIP including Asterisk, SIP including tuning and troubleshooting.
Thorough understanding of VLANs, IPSec, LAN/WAN routing, NAT/PAT, firewalls, fail-over is required.
Extensive experience working with automation tools such as Puppet or Chef, certification preferred.
Experience with telecom SMS messaging protocols is a plus.
Deep knowledge of MySQL, MongoDB desired.
Expert in datacenter (storage & compute) resource allocation, planning, sizing and optimizing.
Ability to work with others well and participate on cross-technology teams.
Must be able to multitask, prioritize tasks, delegate task-level jobs to peers in the Systems Administration group, be a self-starter, quick learner and be extremely organized.
Ability to speak and write clear English in order to create concise but clear documentation.
Excellent interpersonal, communications and organizational skills with ability to lead team meetings, gather requirements, and arrive at technical decisions.
Bachelors degree in Computer Science or equivalent.