ZipRecruiter

Log In

1

Senior Application Software Engineer Jobs in Peoria, IL

Caterpillar

Embedded Software Engineer

Mossville, IL · On-site

$127K - $146K/yr

Caterpillar Inc. seeks Embedded Software Engineer at its facility located at 2427 E. Engine Drive ... Gather and understand electrification application software requirements and translate them to ...

Caterpillar Brazil

Senior Software Engineer

Peoria, IL · On-site

$125 - $150/hr

As a Senior Software Engineer on the Data Engineering team, you will be responsible for developing ... Works directly on complex application/technical problem identification and resolution.

Rfamec

Sr. Embedded Software Engineer

Chillicothe, IL · On-site

$100 - $125/hr

... Sr. Embedded Software Engineer This selected candidate will apply the principles of computer science and mathematical analysis to the design, development, testing, and evaluation of the embedded ...

Belcan

Software Engineer

Morton, IL

$46.60/hr

Software Engineer Location: Morton, IL Zip Code: 61550 Duration: 18 Months Pay Rate: $46.60/hr ... Your application and candidacy will not be considered based on race, colour, sex, religion, creed ...

Belcan, LLC

Software Engineer

Morton, IL · On-site

$46.60/hr

Software Engineer Location: Morton, IL Zip Code: 61550 Duration: 18 Months Pay Rate: $46.60/hr ... Your application and candidacy will not be considered based on race, colour, sex, religion, creed ...

Belcan

Software Engineer

Mossville, IL · On-site

$58.44/hr

Software Engineer Location: Mossville, IL Zip Code: 61552 Duration: 12 Months Pay Rate: $58.44/hr ... Your application and candidacy will not be considered based on race, colour, sex, religion, creed ...

Belcan

Software Engineer

Morton, IL · On-site

$46.60/hr

Software Engineer Location: Morton, IL Zip Code: 61550 Duration: 18 Months Pay Rate: $46.60/hr ... Your application and candidacy will not be considered based on race, colour, sex, religion, creed ...

next page

Showing results 1-20

All JobsApplication Software Engineer JobsSenior Application Software Engineer JobsSenior Application Software Engineer Jobs in Peoria, IL

Senior Application Software Engineer information

See Peoria, IL salary details

$43

$69

$107

How much do senior application software engineer jobs pay per hour?

As of Sep 8, 2026, the average hourly pay for senior application software engineer in Peoria, IL is $69.53, according to ZipRecruiter salary data. Most workers in this role earn between $56.59 and $77.84 per hour, depending on experience, location, and employer.

What does a senior application software engineer do?

A Senior Application Software Engineer is responsible for designing, developing, and maintaining complex software applications. They often lead technical projects, mentor junior engineers, and collaborate with cross-functional teams to deliver high-quality solutions. Their role includes analyzing user needs, writing code, troubleshooting issues, and ensuring software scalability and security. Senior engineers are also involved in architectural decisions and may help define software development standards within their organization.

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

To thrive as a Senior Application Software Engineer, you need advanced proficiency in programming languages (such as Java, Python, or C#), software architecture, and a bachelor’s or master’s degree in computer science or a related field. Experience with development frameworks, cloud platforms, version control systems (like Git), and often certifications such as AWS Certified Developer or Microsoft Certified: Azure Developer Associate are highly valued. Strong problem-solving ability, leadership, and effective communication set standout professionals apart in this role. These skills and qualities are crucial for designing robust software solutions, mentoring teams, and ensuring successful project delivery in complex technical environments.

How does a senior application software engineer typically collaborate with cross-functional teams during the development lifecycle?

Senior Application Software Engineers frequently work alongside product managers, UX/UI designers, QA specialists, and other engineers to ensure software solutions meet business objectives and user needs. They often lead technical discussions, clarify requirements, and provide mentorship to junior developers. Effective communication and a proactive approach to problem-solving are crucial, as these engineers serve as a bridge between technical and non-technical stakeholders throughout the development, testing, and deployment phases.

What is the difference between Senior Application Software Engineer vs Software Developer?

AspectSenior Application Software EngineerSoftware Developer
CredentialsBachelor's or higher in CS or related field; experience often 5+ yearsBachelor's in CS or related field; experience varies, often less than 5 years
Work EnvironmentDesigning, developing, and maintaining complex applications; often involved in architecture decisionsWriting, testing, and debugging code; focused on specific features or modules
Industry UsageCommon in tech, finance, healthcare, and enterprise sectorsWidespread across all industries requiring software solutions

Senior Application Software Engineers typically have more experience and responsibilities, including system design and mentorship, compared to Software Developers who focus more on coding and implementation. Both roles require strong programming skills, but the senior role involves broader project oversight and strategic input.

What cities near Peoria, IL are hiring for Senior Application Software Engineer jobs?

Cities near Peoria, IL with the most Senior Application Software Engineer job openings:

Senior Application Software Engineer jobs near you
Infographic showing various Senior Application Software Engineer job openings in Peoria, IL as of August 2026, with employment types broken down into 76% Full Time, 18% Part Time, and 6% Contract. Highlights an 92% Physical, 2% Hybrid, and 6% Remote job distribution, with an average salary of $144,618 per year, or $69.5 per hour.

IT Software Engineer 5 - Scala, Akka & Java Microservices

The AES Group

Peoria, IL • Remote

$53 - $72.75/hr

Contractor

Re-posted yesterday

Job description

Job Title: - IT Software Engineer 5 ---– Scala, Akka & Java Microservices
Location: 100% remote 

About The AES Group:
The AES Group is a premier technology and engineering consulting company that has been bringing businesses and talent together for over 20 years to deliver innovative solutions that have the greatest positive impact on society. AES has helped over 40 business enterprises, including Fortune 500 companies, engage their customers, empower their employees, and transform their business operations with the power of cloud, data, AI, engineering, and other emerging technologies.

Position’s Contributions to Work Group: 
•    As a Senior Software Engineer, you will build platform notification services that enable Client customers to be alerted for events that are critical to efficiently operate Client engines and machines.

Education & Experience Required: 
•    Bachelor’s degree with 10+ years 
•    Master’s Degree with 8+ years 

Required Technical Skills 
•    5+ years of software development experience using Java 8+
•    2+ years of Scala programming experience
•    2+ years of Akka technologies such as Streams, Actors, HTTP, Persistence

Top candidates will also have:
Proven experience in many of the following:
•    Experience designing well-defined Spring Boot Restful APIs
•    Experience with design and implementation of high-availability and reliable solutions 
•    Designing, developing, deploying and maintaining software at scale.
•    Application architectural patterns, such as MVC, Microservices, Event-driven, etc.
•    Deploying software using CI/CD tools, such as Azure DevOps, Jenkins, etc. 
•    Deploying and maintaining software using AWS. Other AWS technologies, such as API Gateway, ALB, NLB, Fargate, Lambda, S3, CloudWatch, IAM, CloudFormation, etc
•    Developing software applications using relational and NoSQL databases such as PostgreSQL, AWS DynamoDB
•    Working within an Agile framework (ideally Scrum)
•    Must demonstrate solid knowledge of Computer Science fundamentals, such as data structures and algorithms.
•    Passion for technology and an eagerness to contribute to a team-oriented environment
•    Demonstrated leadership on small to medium-scale projects impacting strategic priorities

Typical task breakdown:
As a Senior Software Engineer you will be is responsible for development of services using Scala and Akka technologies. The responsibilities include the following:

•    Competent to perform all programming, project management, and development assignments without close supervision; normally assigned the more complex aspects of systems work.
•    Works directly on complex application/technical problem identification and resolution
•    Works independently on complex systems or infrastructure components that may be used by one or more applications or systems.
•    Drives application development focused around delivering business valuable features
•    Mentors and assists software engineers, providing technical assistance and direction as needed
•    Maintains high standards of software quality within the team by establishing good practices and habits
•    Identifies and encourage areas for growth and improvement within the team
•    Guides the team to develop structured application/interface code, new program documentation, operations documentation and user guides in a casual, flexible environment
•    Communicates with end users and internal customers to help direct development, debugging, and testing of application software for accuracy, integrity, interoperability, and completeness
•    Performs integration testing and customer acceptance testing of components that requires careful planning and execution to ensure timely, quality results.