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Junior System Engineer Jobs in Missouri (NOW HIRING)

IC-CAP LLC

Senior Systems Engineer 112-167

Saint Louis, MO · On-site

$101K - $139K/yr

Guides Mid-level and Junior-level system engineers performing requirements engineering, solutions engineering, scheduling, reliability, resiliency, services development, integration, test and ...

O'Reilly Auto Parts

Senior Systems Engineer

Springfield, MO · On-site

$98K - $134K/yr

The Senior System Engineer designs, implements, and supports enterprise infrastructure solutions ... Experience mentoring junior engineers or providing technical leadership. O'Reilly Auto Parts has a ...

KBR

Chief Systems Engineer

Saint Louis, MO

Oversee and coordinate the work of Senior-, Mid-, and Junior-level contractor Systems Engineers. Required Qualifications: * 18+ years of experience * Master's degree or higher in Systems Engineering ...

teKnoluxion

Junior DevOps Engineer

Saint Louis, MO · On-site

$51.25 - $70.25/hr

Overview Junior DevOps Engineer Springfield, VA OR St. Louis, MO Active TS (SCI eligibility ... Our Mission Services division combines enterprise IT, cloud solutions, DevSecOps, systems ...

KBR, Inc

Chief Systems Engineer

Saint Louis, MO · On-site

$120 - $160/hr

Oversee and coordinate the work of Senior-, Mid-, and Junior-level contractor Systems Engineers.**Required Qualifications:*** 18+ years of experience* Master's degree or higher in Systems Engineering ...

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All JobsSystem Engineer JobsJunior System Engineer JobsJunior System Engineer Jobs in Missouri

Junior System Engineer information

See Missouri salary details

$22.5K

$80.1K

$138.4K

How much do junior system engineer jobs pay per year?

As of Aug 9, 2026, the average yearly pay for junior system engineer in Missouri is $80,114.00, according to ZipRecruiter salary data. Most workers in this role earn between $58,600.00 and $82,100.00 per year, depending on experience, location, and employer.

What are some common challenges faced by junior system engineers during their first year on the job?

Junior System Engineers often encounter challenges such as adapting to complex IT infrastructures, learning to troubleshoot unfamiliar hardware and software issues, and balancing multiple support requests from different teams. It can take time to become proficient with proprietary systems and tools used by the organization. Collaboration with senior engineers and continuous learning through documentation and hands-on experience are key to overcoming these hurdles and building confidence in the role.

What does a junior system engineer do?

A Junior System Engineer assists in maintaining and supporting an organization’s IT infrastructure. Their responsibilities typically include installing and configuring hardware and software, monitoring system performance, troubleshooting issues, and providing technical support to users. They often work under the supervision of senior engineers to ensure systems run efficiently and securely. This entry-level role is ideal for individuals looking to build foundational skills in systems administration and engineering.

What is the difference between Junior System Engineer vs Network Administrator?

AspectJunior System EngineerNetwork Administrator
Required CertificationsCompTIA A+, Network+, Cisco CCNA (preferred)CompTIA Network+, Cisco CCNA, or equivalent
Work EnvironmentIT departments, tech companies, supporting system infrastructureNetwork operations centers, corporate IT teams, managing network hardware
Employer & Industry UsageTechnology, finance, healthcare, and other sectors with IT infrastructureOrganizations with complex network systems, ISPs, large enterprises
Common Search & Comparison IntentEntry-level, supporting system setup and maintenanceNetwork management, troubleshooting, and security

The Junior System Engineer and Network Administrator roles share overlapping skills in IT support and certifications but focus on different areas. The Junior System Engineer primarily supports overall system infrastructure, while the Network Administrator specializes in managing and securing network systems. Both roles are essential in maintaining organizational IT health and often work closely together in tech environments.

Is a junior system engineer a stressful job?

A junior system engineer role can involve stress due to troubleshooting technical issues, managing system uptime, and meeting project deadlines. However, the level of stress varies depending on the work environment, workload, and support from team members. Developing strong problem-solving skills and gaining relevant certifications can help manage job-related stress.

What are the key skills and qualifications needed to thrive as a junior system engineer, and why are they important?

To excel as a Junior System Engineer, you need a foundational understanding of computer systems, networking, and operating systems, usually supported by a degree in computer science or a related field. Familiarity with system administration tools, virtualization platforms, and basic scripting languages, as well as certifications like CompTIA or Microsoft MCSA, is highly beneficial. Strong problem-solving abilities, attention to detail, and effective communication skills help you collaborate with teams and address technical challenges efficiently. These competencies ensure reliable system operation, quick troubleshooting, and seamless support for business technology needs.
What are the most commonly searched types of System Engineer jobs in Missouri? The most popular types of System Engineer jobs in Missouri are:
What are popular job titles related to Junior System Engineer jobs in Missouri? For Junior System Engineer jobs in Missouri, the most frequently searched job titles are:
What job categories do people searching Junior System Engineer jobs in Missouri look for? The top searched job categories for Junior System Engineer jobs in Missouri are:
What cities in Missouri are hiring for Junior System Engineer jobs? Cities in Missouri with the most Junior System Engineer job openings:
Junior System Engineer jobs near you
Infographic showing various Junior System Engineer job openings in Missouri as of August 2026, with employment types broken down into 1% As Needed, 83% Full Time, 13% Part Time, and 3% Contract. Highlights an 92% Physical, 2% Hybrid, and 6% Remote job distribution, with an average salary of $80,114 per year, or $38.5 per hour.

Jr. Systems Engineer 2024-NSE-713

ICES, Inc.

Saint Louis, MO • On-site

Full-time

Re-posted 7 days ago

Job description

Intelligence Consulting Enterprise Solutions, INC. is looking for a Jr. Systems Engineer
Description:
Join ICES on a contract impacting national security as a Jr. Systems Engineer These positions are located in St. Louis, MO. All positions require an active/current TS/SCI security clearance and be willing and able to pass an additional polygraph as needed.
As a Jr. Systems Engineer, specific responsibilities include, but are not limited to:
Duties:
  • Support deployment of upgrades and new features of SAM Tools.Create application documentation, architecture diagrams, how-to guides, SOPs, and other deliverables for both training and tool maintenance. Provide training to government via briefing and informal training session.
  • Assist Mid-Level engineers and the Government in requirements engineering, solutions engineering, scheduling, reliability, resiliency, services development, integration, test and evaluation, maintainability and analysis across the NSG and Federal Agencies.
  • Assist in planning, analysis/traceability of user requirements, architectures traceability, procedures, and problems to automate or improve existing systems and review cloud service capabilities, workflow, and scheduling limitations.
  • Assist in develop solutions designs based on analysis of requirements and new technology.
  • Assist the Government in the capture and translation of mission and customer requirements/needs into systems/capability requirements and solutions.
  • Support the analyses and allocation of requirements to systems architecture components and executing programs.
  • Assist the Government in performing systems integration activities.
  • Assist with AoAs, CoAs, Trade Studies, and Engineering Assessments.
  • Assist the Government in strategic technical planning, project management, performance engineering, risk management and interface design.
  • Perform SAM Customer Service Support.Oversee, direct, and implement all customer service inquiries on SAM and enterprise tools, duties include but not limited to the following: receipt, acknowledgement, document, direct, administer, escalate, and resolve all customer questions for SAM assistance.
Required Qualifications:
  • Bachelor's degree or higher in Systems Engineering or in related technical or scientific fields such as engineering, physics, mathematics, operations research, engineering management, Computer Science, Information Technology, Management Information Systems, or related STEM degree.
  • Junior-level system engineering experience in government or industry.
Desired Qualifications:
  • Demonstrated experience with MBSE Experience and languages.
  • Demonstrated experience with Software Development Frameworks.
  • Demonstrated experience in the field of geospatial intelligence.

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