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Senior System Engineer Jobs in Roscoe, IL (NOW HIRING)

Schreiber Foods, Inc.

Senior Process Engineer

Beloit, WI

$101K - $131K/yr

As a Senior Process Engineer at Schreiber Foods, you will play a pivotal role in optimizing our ... A strong understanding of food safety regulations and quality management systems (e.g., HACCP, GMP ...

Schreiber Foods, Inc.

Senior Process Engineer

Beloit, WI · On-site

$101K - $131K/yr

As a Senior Process Engineer at Schreiber Foods, you will play a pivotal role in optimizing our ... A strong understanding of food safety regulations and quality management systems (e.g., HACCP, GMP ...

Experity

Senior Data Engineer - Remote

Machesney Park, IL · On-site +1

$110K - $150K/yr

... system for on-demand care, Experity is the place to grow your career. Why You'll Love Working Here ... Position Overview We are seeking a Senior Data Engineer to design, build, and operate scalable data ...

Experity

Senior Data Engineer - Remote

Machesney Park, IL · On-site +1

$110K - $150K/yr

... system for on-demand care, Experity is the place to grow your career. Why You'll Love Working Here ... Position Overview We are seeking a Senior Data Engineer to design, build, and operate scalable data ...

Schreiber Foods

Senior Process Engineer

Beloit, WI

$101K - $131K/yr

As a Senior Process Engineer at Schreiber Foods, you will play a pivotal role in optimizing our ... A strong understanding of food safety regulations and quality management systems (e.g., HACCP, GMP ...

Prattwhitney

Senior Software Engineer

Rockford, IL · On-site

$87 - $165/hr

Not Required Join our team in Rockford, IL as a Senior Software Engineer and help develop the ... Collaborate with systems, hardware, verification, and certification engineers to ensure successful ...

Raytheon Technologies

Senior Software Engineer

Rockford, IL · On-site

$122K - $161K/yr

Not Required Join our team in Rockford, IL as a Senior Software Engineer and help develop the ... Collaborate with systems, hardware, verification, and certification engineers to ensure successful ...

Collins Aerospace

Senior Software Engineer

Rockford, IL · Hybrid

$122K - $161K/yr

Not Required Join our team in Rockford, IL as a Senior Software Engineer and help develop the ... Collaborate with systems, hardware, verification, and certification engineers to ensure successful ...

Hawkins

Senior Field Service Engineer

Loves Park, IL · On-site

Our customers include water and wastewater treatment systems, municipal and commercial swimming ... ABOUT THE JOB The Senior Field Service Engineer is responsible for providing site services to ...

Hawkins, Inc.

Senior Field Service Engineer

Loves Park, IL · On-site

$130 - $150/hr

Our customers include water and wastewater treatment systems, municipal and commercial swimming ... The Senior Field Service Engineer is responsible for providing site services to clients, including ...

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Showing results 21-40

All JobsSystem Engineer JobsSenior System Engineer JobsSenior System Engineer Jobs in Roscoe, IL

Senior System Engineer information

See Roscoe, IL salary details

$54.5K

$121.5K

$171.4K

How much do senior system engineer jobs pay per year?

As of Aug 22, 2026, the average yearly pay for senior system engineer in Roscoe, IL is $121,471.00, according to ZipRecruiter salary data. Most workers in this role earn between $101,800.00 and $139,300.00 per year, depending on experience, location, and employer.

What is a senior system engineer?

Senior System Engineers are experienced IT professionals responsible for designing, implementing, managing, and maintaining complex computer systems and networks within an organization. They play a critical role in ensuring the stability, security, and scalability of IT infrastructure. Their tasks often include troubleshooting system issues, optimizing performance, overseeing upgrades, and mentoring junior engineers. Senior System Engineers typically collaborate with other IT teams and departments to support business objectives and technological needs.

What are some common challenges faced by senior system engineers when managing large-scale IT infrastructure projects?

Senior System Engineers often encounter challenges such as coordinating with cross-functional teams, ensuring system scalability, and maintaining high availability during upgrades or migrations. Managing complex environments requires balancing security, performance, and compliance, all while minimizing downtime. Effective communication and proactive planning are crucial to successfully navigating these challenges and delivering robust solutions that meet organizational needs.

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

To thrive as a Senior System Engineer, you need advanced knowledge of system architecture, network administration, and troubleshooting, often supported by a degree in computer science or a related field and several years of experience. Familiarity with tools like VMware, Linux/Windows servers, cloud platforms (AWS, Azure), and certifications such as CompTIA, Cisco, or Microsoft are commonly expected. Strong problem-solving, project management, and communication skills help you lead teams and handle complex technical challenges. These skills are crucial for ensuring system reliability, security, and efficient operation in dynamic IT environments.

What is the difference between Senior System Engineer vs Network Engineer?

AspectSenior System EngineerNetwork Engineer
CredentialsBachelor's in Computer Science or related, certifications like CompTIA Network+, Cisco CCNABachelor's in Computer Science, certifications like Cisco CCNA, CCNP
Work EnvironmentDesigning, implementing, and maintaining IT systems and infrastructureDesigning, deploying, and managing network infrastructure and security
Industry UsageIT, technology, enterprise environmentsTelecommunications, IT, enterprise networks
Common Search/ComparisonSenior System Engineer vs Network Engineer

While both roles require networking knowledge and certifications, Senior System Engineers focus on overall system architecture and integration, whereas Network Engineers specialize in network infrastructure and security. The roles often overlap but serve different core functions within IT teams.

What cities near Roscoe, IL are hiring for Senior System Engineer jobs?

Cities near Roscoe, IL with the most Senior System Engineer job openings:

Senior System Engineer jobs near you
Infographic showing various Senior System Engineer job openings in Roscoe, IL as of August 2026, with employment types broken down into 1% As Needed, 78% Full Time, 16% Part Time, 4% Contract, and 1% Nights. Highlights an 92% Physical, 2% Hybrid, and 6% Remote job distribution, with an average salary of $121,471 per year, or $58.4 per hour.

Senior Web/App Engineer

Blain's Farm & Fleet

Janesville, WI • On-site

$118K - $142K/yr

Full-time

Medical, Dental, Vision, Life, Retirement

Re-posted 11 days ago

Blain's Farm And Fleet rating

6.3

Company rating: 6.3 out of 10

Based on 110 frontline employees who took The Breakroom Quiz

322nd of 734 rated retailers

Job description

Company & Benefits Information
At Blain's Farm & Fleet we believe everyone deserves the opportunity to have a job they love, work in a great environment, grow their career & enjoy a positive balance.
As a family-owned retailer we take pride in offering a competitive benefit package designed to support you & your life. It is one of the reasons we have been named a Forbes Best Employer for seven consecutive years!
  • Associates hired into a full-time role will become eligible for the following benefits effective their 91st day of full-time employment: Medical, Prescription, Dental, Vision, Short & Long Term Disability, Life Insurance, Ancillary Benefits, Identity Theft Protection, Pet Insurance, Etc.
  • All major Holidays & Birthday off
  • Advanced Leadership Training Programs: build the skills to grow your career
  • Associate discount on name brands like Carhartt, Under Armour, STIHL, Milwaukee Tool, DeWalt & much more!
  • Internal recognition programs that support an engaged workplace
  • 401(K) with company match

Compensation
  • Base pay starting between $118,000 to $142,000/yr

The pay listed for this position may vary based on experience. Please note, compensation decisions are contingent on the facts and conditions for each job opening. We take into consideration the minimum requirements outlined in the job description, such as, training and experience, the position's work location, required travel (if any), and external market conditions when determining the final salary for potential new hires.
Please note salary estimates published via alternate online job boards may not be a true representation of the actual pay range offered for this position. Please refer to the Blain's Farm & Fleet position description for accurate pay range information.
Job Duties
The Sr. Web/App Engineer is responsible for leading the design, development, and implementation of complex software applications, with a strong focus on customer-facing and commerce front-end experiences, alongside associate-facing technologies. This role involves collaborating with cross-functional teams, providing technical leadership, and mentoring junior developers. The Sr. Engineer will use their expertise to write high-quality code, solve complex technical problems, and ensure the scalability, security, and performance of the software.
Essential (Primary) Functions:
  • Lead software design and development efforts, ensuring that technical solutions meet business requirements
  • Write efficient, scalable, and maintainable code across various platforms and environments, leveraging modern development frameworks and tools
  • Provide technical guidance and mentorship to junior developers, fostering a collaborative team culture
  • Conduct code reviews and provide constructive feedback to maintain high-quality standards
  • Troubleshoot, debug, and optimize application performance, utilizing modern development tools (including AI-assisted technologies) to accelerate issue resolution and improve system reliability
  • Work closely with product managers, designers, and other stakeholders to deliver innovative solutions, with strong emphasis on front-end development using modern JavaScript frameworks and responsive design practices
  • Stay up to date with emerging technologies and industry trends - Including advancements in AI-assisted development - and incorporate them into development practices and architectural decisions
  • Contribute to all phases of the software development lifecycle, from planning to deployment and maintenance, using modern tools to improve efficiency and delivery speed
  • Proficient in mobile application development

Qualifications
  • Bachelor's degree in computer science, Engineering, or related field preferred
  • 5+ years of experience in software development, with proficiency in multiple programming languages (e.g., Java, C#, Python, JavaScript)
  • Experience as a Senior Digital Engineer with a background in custom-built platforms, along with familiarity working with SaaS platforms such as Adobe, Oracle, and similar solutions is preferred
  • In-depth understanding of software development methodologies
  • Proficient in multiple programming languages and frameworks
  • Strong knowledge of system architecture, design patterns, and data modeling
  • Understanding of cloud platforms
  • Knowledge of application security principles and secure coding practices

EEO Statement
Blain Supply, Inc and Blain's Farm and Fleet (collectively "Blain's") is proud to be an Equal Opportunity Employer. We recognize the importance of diversity and creating an inclusive culture in order to leverage the skills and talents of all people to the mutual advantage of each individual and the organization. Blain's does not discriminate against applicants or employees on the basis of race, religion, color, sex (including pregnancy and sexual harassment), sexual orientation, gender identity, national origin, age, marital status, disability, military or veteran status, or any applicable legally protected status. Our goal is to continue to be recognized as an employer of choice and we have received Forbes Best Mid-Sized company to work for an unprecedented 7 years in a row.

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