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Java Software Engineer Contract Jobs in Illinois

Jobtailor

Lead Java Software Engineer

Chicago, IL · On-site

$120 - $160/hr

Competent to perform all programming and development assignments without close supervision ... Strong expertise in Java 17+ and backend development * Experience developing scalable software ...

Resource Innovations

Lead Java Software Engineer

Chicago, IL

  • Medical

  • Dental

  • Vision

  • Retirement

  • PTO

Resource Innovations is seeking Lead Java Software Engineer to join our growing Software as a Service (SaaS) team. As a hands-on technical lead at Resource Innovations, you will be instrumental in ...

Mojo Trek

Lead Java Software Engineer

Chicago, IL

$70 - $80/hr

What You'll Need (Required) Bachelor's degree in Computer Science, Electrical Engineering, or a related field. Eight years or more of experience designing and developing software applications in Java ...

Civis Analytics

Software Engineer (Contract)

Chicago, IL · On-site +1

$90K/yr

  • Medical

  • Dental

  • Vision

  • Retirement

  • PTO

Virginia Civis is hiring a Software Engineer (Contract) to build and ship high-quality software across the full stack in service of our clients' most important missions. This is a 6-month contract ...

Civis Analytics

Software Engineer (Contract)

Chicago, IL · On-site +1

$90K/yr

  • Medical

  • Dental

  • Vision

  • Retirement

  • PTO

Virginia Civis is hiring a Software Engineer (Contract) to build and ship high-quality software across the full stack in service of our clients' most important missions. This is a 6-month contract ...

Civis Analytics

Software Engineer (Contract)

Chicago, IL · On-site +1

$90K/yr

  • Medical

  • Dental

  • Vision

  • Retirement

  • PTO

Virginia Civis is hiring a Software Engineer (Contract) to build and ship high-quality software across the full stack in service of our clients' most important missions. This is a 6-month contract ...

1 point system

Lead Java Software Engineer

Chicago, IL · On-site

... enterprise software as a senior or lead engineer with ownership of complex systems and ... Deep expertise in Java and Spring frameworks, including Spring Boot and Spring Cloud, for building ...

ULINE

Software Developer - Java

Glenview, IL

$90K - $128K/yr

  • Medical

  • Retirement

  • PTO

Software Developer - Java Pay from $90,000 to $128,000 per year 2200 S. Lakeside Drive, Waukegan, IL 60085 Are you ready to design, innovate and lead in a collaborative, cutting-edge tech environment?

ULINE

Software Developer - Java

Waukegan, IL · On-site

$90K - $128K/yr

  • Medical

  • Retirement

  • PTO

Software Developer - Java Pay from $90,000 to $128,000 per year 2200 S. Lakeside Drive, Waukegan, IL 60085 Are you ready to design, innovate and lead in a collaborative, cutting-edge tech environment?

ULINE

Software Developer - Java

Waukegan, IL

$90K - $128K/yr

  • Medical

  • Retirement

  • PTO

Software Developer - Java Pay from $90,000 to $128,000 per year 2200 S. Lakeside Drive, Waukegan, IL 60085 Are you ready to design, innovate and lead in a collaborative, cutting-edge tech environment?

KnackHook, LLC

IT Software Engineer

Chicago, IL · On-site

T Software Engineer Contract Chicago, IL, hybrid Must have : API, AWS, Azure, Elastic Search, Java, JUnit, MySQL, Spring Boot, SQL Required Education •  Degree: Bachelor ...

ULINE

Senior Software Developer - Java

Glenview, IL

$96K - $148K/yr

  • Medical

  • Retirement

  • PTO

Senior Software Developer - Java Pay from $96,000 to $148,000 per year 2200 S. Lakeside Drive, Waukegan, IL 60085 Are you ready to design, innovate and lead in a collaborative, cutting-edge tech ...

Uline

Senior Software Developer - Java

Waukegan, IL

$96K - $148K/yr

  • Medical

  • Retirement

  • PTO

Senior Software Developer - Java Pay from $96,000 to $148,000 per year 2200 S. Lakeside Drive, Waukegan, IL 60085 Are you ready to design, innovate and lead in a collaborative, cutting-edge tech ...

ULINE

Senior Software Developer - Java

Waukegan, IL · On-site

$96K - $148K/yr

  • Medical

  • Retirement

  • PTO

Senior Software Developer - Java Pay from $96,000 to $148,000 per year 2200 S. Lakeside Drive, Waukegan, IL 60085 Are you ready to design, innovate and lead in a collaborative, cutting-edge tech ...

Uline

Senior Software Developer - Java

Waukegan, IL

$96K - $148K/yr

  • Medical

  • Retirement

  • PTO

Senior Software Developer - Java Pay from $96,000 to $148,000 per year 2200 S. Lakeside Drive, Waukegan, IL 60085 Are you ready to design, innovate and lead in a collaborative, cutting-edge tech ...

ULINE

Senior Software Developer - Java

Waukegan, IL

$96K - $148K/yr

  • Medical

  • Retirement

  • PTO

Senior Software Developer - Java Pay from $96,000 to $148,000 per year 2200 S. Lakeside Drive, Waukegan, IL 60085 Are you ready to design, innovate and lead in a collaborative, cutting-edge tech ...

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Showing results 1-20

All JobsJava Software Engineer Contract JobsJava Software Engineer Contract Jobs in Illinois

Java Software Engineer Contract information

What is a Java software engineer contract?

A Java Software Engineer Contract is a temporary or fixed-term role where a software engineer is hired to develop, test, and maintain software applications using the Java programming language. Contractors typically work on specific projects or for a set period, rather than as permanent employees. These roles often require expertise in Java frameworks, object-oriented programming, and collaboration with other developers or teams. Contract positions can offer flexibility, competitive pay, and opportunities to work on diverse projects.

What are the key skills and qualifications needed to thrive as a Java software engineer contractor?

To thrive as a Java Software Engineer Contractor, you need strong proficiency in Java programming, experience with software development lifecycles, and typically a bachelor's degree in computer science or a related field. Familiarity with tools such as Spring Framework, Git, Maven, and cloud platforms, as well as knowledge of unit testing frameworks, is highly valued. Excellent problem-solving abilities, adaptability, and clear communication help you stand out, especially when collaborating remotely or integrating with diverse teams. These skills and qualities are crucial for delivering reliable, scalable solutions on time and ensuring smooth coordination in dynamic project environments.

What are some common challenges faced by Java software engineers on contract assignments, and how can they be managed?

Contract Java Software Engineers often face challenges such as quickly adapting to new codebases, understanding project requirements with limited onboarding time, and integrating smoothly with established teams. To manage these challenges, it's important to proactively communicate with team members, ask clarifying questions early, and make use of available documentation. Contract roles also require strong time management and self-motivation, as deliverables and expectations may be clearly defined but support can be less hands-on compared to permanent positions.

What is the difference between Java Software Engineer Contract vs Java Software Engineer?

AspectJava Software Engineer ContractJava Software Engineer
Employment TypeTemporary/Project-basedFull-time/permanent
DurationFixed-termIndefinite
Work EnvironmentClient sites, consulting firms, or remoteCompany offices or remote
CertificationsTypically no specific certifications requiredOften prefers Java certifications or related credentials

Java Software Engineer Contract roles are temporary positions focused on specific projects, offering flexibility but less job security. Full-time Java Software Engineers work permanently within organizations, with benefits and career growth opportunities. Both roles require strong Java skills, but contracts may have less emphasis on certifications. Choose based on your career goals and desired work environment.

What are the most commonly searched types of Java Software Engineer jobs in Illinois?

The most popular types of Java Software Engineer jobs in Illinois are:

What cities in Illinois are hiring for Java Software Engineer Contract jobs?

Cities in Illinois with the most Java Software Engineer Contract job openings:

Java Software Engineer Contract jobs near you

Lead Java Software Engineer AWS Microservices

3Core Systems, Inc

Chicago, IL • On-site

Other

Posted 3 days ago

New

Job description

3Core Systems, Inc is an SAP and Success Factors Partner with employees located across the United States. Our organization is dedicated to customer and employee satisfaction. We provide High Quality, Cost efficient and Competitive Solutions and Resources.

3Core Systems is looking for a Lead Java Software Engineer AWS Microservices for one of our clients in Chicago, IL, 60603 (Hybrid: 3 Days a week onsite)

"US and those authorized to work in the US are encouraged to apply. We are unable to sponsor visas at this time"

Job Title: Lead Java Software Engineer AWS Microservices
Location: Chicago, IL, 60603, USA
Duration: Long-term contract

Must Have Skills/Attributes: API, AWS, Azure, Elastic Search, Java, JUnit, MySQL, Spring Boot, SQL

Experience Desired: Java 17+ & Spring Boot for RESTful API Development (10 yrs); Public Cloud Deployment (AWS preferred) & API Gateway (Apigee) (10 yrs); End-to-End Software Lifecycle Ownership & Automated Testing (10 yrs)

Job Description
Required Education
Degree: Bachelor's degree or equivalent (implied by "Degree + 10+ years' experience")
Years of Experience: 10+ years of professional software engineering experience
Required Skills
Programming Language: Extensive experience with Java 17+ and Spring Boot for RESTful API development.
API Management: Experience with API gateways and management platforms, specifically Apigee (or similar).
Cloud Platforms: Proficiency deploying and maintaining software in public cloud environments (AWS, Azure, or Google Cloud Platform); AWS preferred given the platform context.
Testing: Proven ability to write comprehensive automated tests (unit, integration, end-to-end) using frameworks like JUnit and Mockito.
Architecture: Experience designing and implementing Event-Driven Architectures using message streaming solutions (e.g., AWS Kinesis, SQS, SNS, Apache Kafka, RabbitMQ, Azure Event Hub).
Datastores: Deep understanding of multiple datastore types:
o Relational: PostgreSQL, MySQL, Oracle, AWS RDS/Aurora
o NoSQL: MongoDB, Cassandra, AWS DynamoDB
o Search: Elasticsearch
o Caching: Redis
o Vector databases
CI/CD: Hands-on experience configuring and deploying software via CI/CD pipelines (Azure DevOps, Jenkins, or GoCD).
Agile: Demonstrated success working within an Agile/Scrum framework.
Security: Knowledge of secure service-to-service integrations using OAuth 2.0, JWT, and entitlement-based authorization models.
Soft Skills: Strong decision-making, critical thinking, and technical leadership abilities.
Preferred/Nice-to-Have:
Familiarity with AI-assisted coding companions (GitHub Copilot, Cursor).
Lead Software Engineer provides technical leadership in the design, development, testing, and deployment of a state-of-the-art digital platform hosted on AWS. This role will build a world-class platform to host a wide range of digital applications.
Key Responsibilities:
Lead the design and development of enterprise-scale REST APIs and microservices using Java 21+, Spring Boot, Apigee API Gateway, and AWS cloud services.
Architect API-first solutions; define service contracts, payload schemas, and OpenAPI/Swagger specifications.
Lead solution decomposition by breaking business requirements into technical designs, user stories, and implementation tasks.
Guide engineers in developing secure service-to-service integrations using OAuth 2.0, JWT, and enterprise entitlement-based authorization models.
Serve as the technical lead for complex initiatives, driving architecture decisions, design reviews, and code reviews.
Collaborate with product owners, UI development teams, architects, and partner teams to ensure successful delivery of customer-focused solutions.
Establish engineering best practices for reliability, scalability, observability, security, and maintainability.
Drive quality engineering practices including automated testing, performance testing, load testing, and production readiness reviews.
Lead troubleshooting and resolution of complex production issues.
Create and maintain technical documentation, operational runbooks, and engineering standards.
Drive end-to-end software ownership from design through deployment, monitoring, support, and continuous improvement.

Regards,

Recruiting Team

3Core Systems Inc

9101 Burnet Road, Suite 207, Austin, TX 78758

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