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Linux Systems Engineer
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Lereta
Pomona, CA (In Person)
Full-Time
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Job Description
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Always be on the lookout for job scams! Learn more about identity theft Opens in new window Help information , opens a new window. Info First Job Previous Job 1,078 of 6,098 Next Job Last Job Share More Like This Between $96k and $127k Per Year DOE (Depends on Experience) Linux Systems Engineer LeretaOccupation:
Office and Administrative Support Workers, All OtherLocation:
Pomona, CA - 91768Job Type:
Regular, Full Time (30 Hours or More), Permanent EmploymentPosted:
04/09/2026 Positions available: 1Source:
CalJOBSWeb Site:
CalJOBS Onsite /Remote:
Work onsite all of the timeUpdated:
04/10/2026Expires:
06/08/2026Agency Job ID:
LINUX001556
Job #: 19847806 Job Requirements and Properties Help for Job Requirements and Properties. Opens a new window. Work Onsite Full Time Education Bachelor's Degree Experience 12 Month(s) Schedule Full Time Job Type Regular Duration Permanent Employment Public Transit Available Benefits Job Description Help for Job Description. Opens a new window. LERETA is seeking a Linux Systems Engineer to support and enhance our enterprise infrastructure environments. The role is responsible for the design, implementation, and ongoing support of Linux-based systems across both cloud and on-premise platforms. The ideal candidate will have strong technical expertise, a disciplined approach to system reliability and security, and the ability to collaborate effectively across technical teams.Key Responsibilities Linux engineering:
Design, harden, and maintain RHEL/Ubuntu systems; implement HA/DR strategies and patching standards. Networking troubleshooting: Diagnose issues acrossOSI/TCP/IP
layers (DNS/DHCP, routing, VLANs, firewalls, SSL/TLS/certs). Load balancing & traffic management: Deploy, configure, and tune F5 BIG‑IP (LTM/GTM, iRules) and HAProxy for L4-L7 services. Azure infrastructure: Build and secure IaaS/PaaS (VMs, VNets, NSGs, UDRs, Azure Load Balancer, Azure Firewall, Storage). Tooling & automation: Develop utilities/services in C- and Python
- ; integrate with CI; create health checks and runbooks.
Collaboration:
Partner with App/Network/SecOps teams; document architectures/runbooks; contribute to post‑mortems and RCA.Core Competencies:
Expertise in designing, hardening, and maintaining Linux systems (RHEL/Ubuntu) in production environments, with a focus on system security, performance optimization, and high availability Strong hands-on experience in building, securing, and supporting cloud infrastructures across IaaS and PaaS environments, particularly within Microsoft Azure, including virtual machines, networking, storage, and security In-depth understanding of networking protocols and troubleshooting at allOSI/TCP/IP
layers. Expertise in diagnosing and resolving issues related to DNS/DHCP, routing, VLANs, firewalls, and SSL/TLS Ability to work effectively in a cross-functional team environment (with App/Network/SecOps teams) to document architectures, create runbooks, and contribute to post-mortems and root cause analysis for incidentsEducation and Experience:
10+ years in Linux systems engineering/administration in production environments Experience designing, building, and supporting mission‑critical infrastructure across Azure and on‑prem environments Experience writing C and Python for systems tooling, performance, or networking use cases Hands‑on experience designing, deploying, and tuning F5 BIG‑IP and HAProxy Strong networking fundamentals and troubleshooting (TCP/IP, routing, DNS, SSL/TLS) Practical experience building and supporting Azure infrastructure (compute, networking, storage) Bachelor's Degree in Computer Science, Information Technology, Engineering, or a related field Equivalent experience in Linux systems engineering, cloud infrastructure, and networking may be considered in place of formal education Salary range: $95,9471 - $127,000.00 Lereta Is a Private Sector employer https://www.lereta.com/Company Profile:
Since 1986, LERETA has provided a full suite of national real estate tax services for residential and commercial loans, including automated online research and certification, tax bill processing, a suite of delinquent tax services, and customized tax outsourcing service programs. In addition, LERETA provides real-time flood zone determination services that include flexible levels of service based on our customers' needs - from simple delivery of flood zone determinations to complete portfolio life-of-loan tracking. Our innovative technologies and dedicated team of real estate tax and flood service professionals provide the mortgage and insurance industries the fastest, most accurate and complete access to property tax and flood information across the country. However, it's ourEXTRAORDINARY
customer service that differentiates LERETA from other real estate property tax providers. Our most fundamental core objective is to "make a positive difference" in the businesses of our customers and strategic partners. By assisting customers in reducing costs, increasing the efficiency of their businesses and through our customer focus, LERETA has established a reputation as the highest quality provider of real estate tax and flood services in the industry. Did Not Disclose Number of Employees Connect with Lereta Other Local Jobs from Lereta Help for Other Local Jobs from. Opens a new window. Change to Grid view Pause Carousel Previous Slide Next Slide Slide 1 Slide 2 Slide 3 Linux Systems Engineer Lereta Pomona, CA Office and Administrative Support Workers, All Other Regular | $959,471.00-$127,000.00 Year Preferred Employer 3 weeks ago LERETA is seeking a Linux Systems Engineer to support and enhance our enterprise infrastructure environments. The role is responsible for the design, implementation, and ongoing support of Linux-based systems across both cloud and on-premise platforms. The ideal candidate will have strong technical expertise, a disciplined approach to system reliability and security, and the ability to collaborate effectively across technical teams.Key Responsibilities Linux engineering:
Design, harden, and maintain RHEL/Ubuntu systems; implement HA/DR strategies and patching standards.Networking troubleshooting:
Diagnose issues acrossOSI/TCP/IP
layers (DNS/DHCP, routing, VLANs, firewalls, SSL/TLS/certs). Load balancing & traffic management: Deploy, configure, and tune F5 BIG‑IP (LTM/GTM, iRules) and HAProxy for L4-L7 services.Azure infrastructure:
Build and secure IaaS/PaaS (VMs, VNets, NSGs, UDRs, Azure Load Balancer, Azure Firewall, Storage). Tooling & automation: Develop utilities/services in C- and Python
- ; integrate with CI; create health checks and runbooks.
Collaboration:
Partner with App/Network/SecOps teams; document architectures/runbooks; contribute to post‑mortems and RCA.Core Competencies:
Expertise in designing, hardening, and maintaining Linux systems (RHEL/Ubuntu) in production environments, with a focus on system security, performance optimization, and high availability Strong hands-on experience in building, securing, and supporting cloud infrastructures across IaaS and PaaS environments, particularly within Microsoft Azure, including virtual machines, networking, storage, and security In-depth understanding of networking protocols and troubleshooting at allOSI/TCP/IP
layers. Expertise in diagnosing and resolving issues related to DNS/DHCP, routing, VLANs, firewalls, and SSL/TLS Ability to work effectively in a cross-functional team environment (with App/Network/SecOps teams) to document architectures, create runbooks, and contribute to post-mortems and root cause analysis for incidentsEducation and Experience:
10+ years in Linux systems engineering/administration in production environments Experience designing, building, and supporting mission‑critical infrastructure across Azure and on‑prem environments Experience writing C and Python for systems tooling, performance, or networking use cases Hands‑on experience designing, deploying, and tuning F5 BIG‑IP and HAProxy Strong networking fundamentals and troubleshooting (TCP/IP, routing, DNS, SSL/TLS) Practical experience building and supporting Azure infrastructure (compute, networking, storage) Bachelor's Degree in Computer Science, Information Technology, Engineering, or a related field Equivalent experience in Linux systems engineering, cloud infrastructure, and networking may be considered in place of formal education Salary range: $95,9471 - $127,000.00 General Requirements (Outer) Skills (Inner) Specialized (Center) 0% Occupation 0% Education 0% Work Experience 0% Location 0% Salary N/A Job Skills N/A Shift N/A Min. Age N/A Drivers Lic. N/A DL Endorsements N/A Typing N/A Security Clearance N/A Language This chart is used to compare your background against this job to help to determine if you would be a good fit for this position. You match 0% of the General Job Requirements. You match 0% of the Skills Required, and you match 0% of the Specialized Job Requirements. End of interactive chart. View Share Payment Correspondence Supervisor Lereta Pomona, CA Office and Administrative Support Workers, All Other Regular | $52,074.00-$70,304.00 Year Preferred Employer 3 weeks ago The Payment & Correspondence Supervisor will oversee all functions of the Payment & Correspondence Team, including outgoing manual bill requests to taxing authorities, tax bill review (keying and verification), Bill Vault reporting to customers, incoming mail sorting, letter correspondence, and monitoring EFT/ACH funds and physical checks to ensure balancing and accurate payment remittance. This position designs, implements, and monitors productivity and quality control standards, develops best-practice procedures, and ensures consistent team performance and growth. The Supervisor will work closely with clients and internal support teams, furthering LERETA's reputation as a trusted leader in the tax service industry. Operations, Workflow Management & Reporting- Develops and documents workflow procedures, ensuring they are implemented effectively and maintained at high quality standards
- Plans and organizes team operations in alignment with the company's strategies and objectives
- Organize and prioritize work to ensure timely completion of assigned daily tasks.
- Leads and facilitates daily team huddles, encouraging and supporting employee suggestions for process improvements and workflow efficiencies
- Monitors team operational activities and proactively communicate progress and concerns to the Operational Tax Manager
- Provides coverage for daily workflow as needed to ensure adequate staffing during peak cycles and to maintain timely, accurate reporting
- Serves as a backup to perform all functions of the Payment & Correspondence Team
- Researches complex issues, including advanced claims research and mitigation, and effectively communicate findings to management
- Ensures the team meets all daily, weekly, monthly, and quarterly performance goals
- Produces and analyzes daily, weekly, monthly, and quarterly performance statistics to track team progress
- Ensures all internal and customer Service Level Agreements (SLAs) are consistently met Budgetary Goals - Exercise Financial Rigorous
- Processes semi-monthly payroll accurately and on schedule
- Reviews, approves, and tracks vacation, sick, and floating holiday requests, as well as other time-off requests as needed
- Anticipates staffing requirements and communicates needs to the Operational Tax Manager
- Assists the Operational Tax Manager with the development and planning of the annual budget
- Supports the Payment & Correspondence Team in meeting financial expense goals, production targets, and compliance standards
- Participates in monthly reforecasting activities, including monitoring temporary staffing budgets and overtime expenditures
- Provides the manager with timely feedback regarding budgeting needs and adjustments
- Minimizes or eliminates losses and penalties due to processing errors by conducting thorough root cause analyses and implementing corrective measures Leadership/Relationship Building
- Provides timely, accurate assistance in response to written and verbal customer inquiries and issues
- Responds to escalated calls from homeowners, lenders, and third parties as needed
- Represents the team in interdepartmental meetings and effectively communicate agendas, updates, and action items back to the team
- Prepares detailed documentation and business requirements for processes, procedures, and system enhancements, supporting both internal and external audits
- Demonstrates professionalism in all interactions with customers and taxing authorities
- Upholds and enforces company policies while serving as a role model for team members
- Encourages and supports employee suggestions for process and workflow improvements Process Improvement & Department Technology
- Maintains up-to-date, detailed documentation of team processes and procedures
- Recommends new policies and procedures based on performance trends and operational issues
- Proactively identifies and assess estaxing authority or customer needs, document required actions, and coordinate with appropriate internal teams
- Submits timely iSupport tickets, requests, and justifications
- Collaborates with IT to develop business requirements, conduct thorough testing in the UAT environment, and ensure successful implementation
- Assists in developing and delivering training for all technology updates and system changes Manage Performance
- Provides consistent, constructive feedback to employees on productivity, rework, error rates, and the ongoing expectation of continuous improvement
- Establishes and manages weekly and monthly accuracy goals for team members
- Establishes and manages weekly and monthly production goals for team members
- Ensures all employees receive thorough and effective training
- Fosters a high-quality work environment that motivates team members to perform at their best
- Recommends and implements development plans to support individual employee growth
- Manages overall employee performance, including recognition through Awardco and the implementation of performance improvement plans when necessary
- Completes and delivers performance appraisals for all direct reports
- Conducts regular, documented one-on-one meetings with each direct report
- Remains accessible to team members experiencing work-related challenges, providing coaching, counseling, guidance, and resolution as needed Business Rules, Procedures & Contracts
- Works with compliance team to ensure all changes to existing business rules or procedures are understood and communicated to teams
- Provides feedback to management on issues or concerns regarding requested changes to current business rules or procedures from customers or taxing authorities Additional Responsibilities
- Assumes the Manager's role in his/her absence
- Assists with recruitment, hiring of department personnel by interviewing potential candidates, contribute to candidate selection, and submits iSupport tickets for new hire equipment and system security/set-up
- Performs other miscellaneous tasks or special projects, as assigned by
Management Core Competencies:
Ability to formulate and plans and goals for team Demonstrate ability to assigned tasks and recognizes the opportunity to delegate Excellent analytical and problem-solving skills Team player and have ability to work in a team environment Possess effective communication skills, both written and oral Ability to work in a fast-paced, high volume, customer-focused and high stress environment Ability to accurately meet deadlines and work overtime during peak seasons (as needed) Demonstrate strong time management skillsRequired Education & Experience:
High School Diploma or equivalent Minimum of three (3) to five (5) years' experience as Senior Payment & Correspondence or equivalent Ability to research and understand responsible party for penalty and losses Advanced knowledge and understanding of PCT Databases (Bill Acquisition and/or Payment) Advanced knowledge and understanding of LERETA's Mainframe and platforms for processing Advanced knowledge of LERETA's tax cycles including higher level of complexity pertaining to state and agency requirements Must be able to type 60 wpm Must be able to use 10-key by touch; 10k or above with 98% accuracy Must have advanced knowledge of Real Estate Tax Servicing Salary range: $52,074 - $70,304 General Requirements (Outer) Skills (Inner) Specialized (Center) 0% Occupation 0% Education 0% Work Experience 0% Location 0% Salary N/A Job Skills N/A Shift N/A Min. Age N/A Drivers Lic. N/A DL Endorsements N/A Typing N/A Security Clearance N/A Language This chart is used to compare your background against this job to help to determine if you would be a good fit for this position. You match 0% of the General Job Requirements. You match 0% of the Skills Required, and you match 0% of the Specialized Job Requirements. End of interactive chart. View Share Linux Systems Engineer Lereta Pomona, CA Office and Administrative Support Workers, All Other Regular | $95,947.00-$127,000.00 Year Preferred Employer 4 weeks ago LERETA is seeking a Linux Systems Engineer to support and enhance our enterprise infrastructure environments. The role is responsible for the design, implementation, and ongoing support of Linux-based systems across both cloud and on-premise platforms. The ideal candidate will have strong technical expertise, a disciplined approach to system reliability and security, and the ability to collaborate effectively across technical teams.Key Responsibilities Linux engineering:
Design, harden, and maintain RHEL/Ubuntu systems; implement HA/DR strategies and patching standards.Networking troubleshooting:
Diagnose issues acrossOSI/TCP/IP
layers (DNS/DHCP, routing, VLANs, firewalls, SSL/TLS/certs). Load balancing & traffic management: Deploy, configure, and tune F5 BIG‑IP (LTM/GTM, iRules) and HAProxy for L4-L7 services.Azure infrastructure:
Build and secure IaaS/PaaS (VMs, VNets, NSGs, UDRs, Azure Load Balancer, Azure Firewall, Storage). Tooling & automation: Develop utilities/services in C- and Python
- ; integrate with CI; create health checks and runbooks.