Sr. IT Support Administrator

Job Description

Job Description

About SiTime

SiTime Corporation is the precision timing company. Our semiconductor MEMS programmable solutions offer a rich feature set that enables customers to differentiate their products with higher performance, smaller size, lower power and better reliability. With more than 3 billion devices shipped, SiTime is changing the timing industry. For more information, visit

Job Summary

The Senior IT Support Administrator provides advanced technical support and systems administration for end‑user computing environments. This role serves as an escalation point for complex IT issues and is responsible for endpoint management, identity and access administration, security controls, SaaS platform support, and IT operational processes. The position requires a hands‑on, security‑focused professional capable of operating independently while collaborating across IT and business teams.

Responsibilities:

• Providing continuous administration and support for a hybrid identity environment—including Active Directory and Microsoft Entra ID—to deliver secure, dependable, and scalable identity services.
  • Own the end‑to‑end user lifecycle management process, including onboarding, role transitions, and offboarding, with a focus on access controls, compliance, and automation.
  • Provide advanced support for Windows, macOS, and Linux operating systems, serving as an escalation point for complex OS‑level issues.
  • Diagnose and resolve issues across a broad range of hardware and platforms, including laptops and desktops, servers, mobile devices, conference room systems, and audiovisual (AV) equipment.
  • Partner with senior IT and security teams to improve endpoint security and reliability, supporting technologies and processes such as Endpoint Detection and Response (EDR), backups, application deployment, and OS/software patching.
  • Administer and support Microsoft 365 services, including Exchange Online, Microsoft Teams, OneDrive, and SharePoint, ensuring availability, security, and optimal user experience.
  • Support and troubleshoot cloud infrastructure and services in Microsoft Entra and Amazon Web Services (AWS), including virtual machines, identity integrations, networking, and access controls.
  • Perform advanced network troubleshooting, including analysis of IP addressing, DNS, DHCP, VPN connectivity, and related infrastructure issues.
  • Support, maintain, and troubleshoot VMware virtualization environments, including ESXi hosts and vCenter.
  • Develop and maintain PowerShell scripts to automate administrative tasks, improve operational efficiency, and reduce manual effort.
  • Proactively enforce and promote security best practices, including monitoring systems, identifying risks, and investigating and resolving security‑related incidents.
  • Contribute to documentation, process improvement, and knowledge sharing to enhance IT operational maturity and support scalability.

Qualifications & Requirements:

• Bachelor’s degree in information technology, Computer Science, or related field, or equivalent practical experience
• Minimum of 7 years of experience in IT support, systems administration, or a related technical role
• Experience working in a corporate or enterprise IT environment
• IT certification will be plus

Desired Characteristics & Attributes:

• Ability to work independently and manage multiple priorities
• Availability for after‑hours works as needed for maintenance, emergencies, or on-call weekend support.
• Ability to collaborate effectively with overseas/remote teams.
• Strong verbal, written, communication and organizational skills
• Detail‑oriented with a proactive, security‑first mindset

Compensation Range:

At SiTime, we believe great work deserves great rewards. We offer a comprehensive and highly competitive compensation package designed to attract top talent.

The annual base salary range for this role is $115,000 - $158,000. The final offer is determined by factors such as location, experience, education, and training.

In addition to base salary, this role is eligible for a quarterly bonus tied to the achievement of innovation goals—reflecting our commitment to recognizing meaningful impact. We also offer equity grants, providing a meaningful opportunity to share in the company’s future growth and success.

Benefits offered : 401k plan, health and wellness that includes medical, dental, vision, life, parental leave, legal services, and time off plans.

SiTime is an Equal Opportunity Employer. We treat each person fairly and we do not tolerate discrimination or harassment against anyone on the basis of any protected characteristics, including race, color, religion, national or ethnic origin, sex, sexual orientation, gender identity or expression, age, disability, pregnancy, political affiliation, protected veteran status, protected genetic information, or marital status or other characteristics protected by law. SiTime participates in the E-Verify program.

Learn More about SiTime: Review the Get to Know SiTime section of our career page to explore our culture, values, and what makes us unique.

• Innovation on Top – Philosophies of Innovation with Rajesh Vashist
• Fabrication Knowledge – An Interview with Rajesh Vashist
• SiTime Corporation – YouTube

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