Systems Engineer III

Job Title: Systems Engineer III

Role Overview
We are seeking an experienced Systems Engineer III to lead the planning, design, and implementation of our core systems infrastructure. In this role, you will be responsible for ensuring the high availability, security, and performance of our enterprise hardware and software environments.
This is a hands-on, highly autonomous role for a professional who thrives in a dynamic environment. You will rely on your technical expertise and industry best practices to engineer scalable solutions, monitor system performance, and troubleshoot complex operational challenges. If you are a proactive problem-solver who enjoys driving infrastructure projects and mentoring junior team members, we want to hear from you.

Key Responsibilities
Infrastructure Design & Implementation
Systems Architecture: Plan, design, and execute the implementation of enterprise-grade hardware and software infrastructure to support growing business needs.
Performance Monitoring: Proactively monitor system performance, identify bottlenecks, and implement optimizations to ensure maximum uptime and reliability.
Lifecycle Management: Manage the full lifecycle of servers, storage, and associated platforms, ensuring seamless upgrades, patches, and maintenance windows.

Operations & Leadership
Technical Troubleshooting: Serve as an advanced escalation point for complex infrastructure incidents, performing root-cause analysis and deploying preventative solutions.
Project & Team Guidance: Lead and direct the technical work of junior team members on infrastructure projects. Bring creativity and independent judgment to complex system challenges.
Documentation & Standards: Establish and maintain robust technical documentation, configuration standards, and operational procedures across the systems environment.

Qualifications & Requirements
Minimum Qualifications
Education: Bachelor's degree in Computer Science, Information Technology, Systems Engineering, or a related technical field.
Experience Baseline: 4 to 6+ years of professional experience in systems engineering or a closely related infrastructure role.
Technical Mastery: Deep familiarity with standard enterprise hardware, operating systems, networking concepts, and systems architecture practices.
Autonomy: Proven ability to rely on experience and independent judgment to plan, execute, and accomplish complex project goals.

Preferred Attributes
Demonstrated leadership experience-comfortable guiding project tasks and mentoring other technical staff.
Strong cross-functional communication skills, with the ability to translate technical infrastructure requirements for management and business stakeholders.
A proactive mindset focused on continuous improvement, automation, and infrastructure resilience.

Equal Opportunity Employer / Disabled / Protected Veterans

The Know Your Rights poster is available here:
_EEOC_KnowYourRights6.12.pdf

The pay transparency policy is available here:
_%20English_formattedESQA508c.pdf

For temporary assignments lasting 13 weeks or longer, AllSTEM Connections is pleased to offer major medical, dental, vision, 401k and any statutory sick pay where required.

We are committed to working with and providing reasonable accommodations to individuals with disabilities. If you need a reasonable accommodation for any part of the employment process, please contact your staffing representative who will reach out to our HR team.

AllSTEM Connections participates in the E-Verify program in certain locations as required by law. Learn more about the E-Verify program.
_Participation_Poster_ES.pdf

We also consider for employment qualified applicants regardless of criminal histories, consistent with legal requirements, including, if applicable, the City of Los Angeles' Fair Chance Initiative for Hiring Ordinance. Pursuant to applicable state and municipal Fair Chance Laws and Ordinances, we will consider for employment-qualified applicants with arrest and conviction records, including, if applicable, the San Francisco Fair Chance Ordinance. For Los Angeles, CA applicants: Qualified applications with arrest or conviction records will be considered for employment in accordance with the Los Angeles County Fair Chance Ordinance for Employers and the California Fair Chance Act.

Additional Skills

(none specified)

AllSTEM Representative Contact Info

Account Executive:

Nichols

Branch Phone:



Location:

Ontario, CA