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Junior Java Backend Developer Jobs in Illinois (NOW HIRING)

3B Staffing LLC

Backend Java Developer

Moline, IL · On-site

Backend Java Developer - AWS, Serverless non local will work USC only Job Summary We are seeking a Backend Java Developer with strong Core Java fundamentals and hands-on experience building cloud ...

New

3B Staffing LLC

Backend Java Developer

Moline, IL · On-site

$45.50 - $59.25/hr

Backend Java Developer - AWS, Serverless non local will work USC only Job Summary We are seeking a Backend Java Developer with strong Core Java fundamentals and hands-on experience building cloud ...

New

1 point system

Java Developer

Riverwoods, IL · On-site

$53 - $68.50/hr

This role centers on building and optimizing high‑performance backend services and cloud‑based ... Engineer or Backend Engineer. * Strong proficiency in Java 21, Spring Boot, RESTful APIs, and ...

Appex Innovation

Senior Java Developer

Chicago, IL · On-site

$120 - $180/hr

Build cloud‑native backend services using Java, Spring Boot, Apache Camel, microservices ... Mentor developers through code‑level guidance, design reviews, and engineering best practices ...

Appex Innovation

Senior Java Developer

Chicago, IL · On-site

$59 - $75.25/hr

... native backend services using Java, Spring Boot, Apache Camel, microservices, container ... engineering best practices; however, the primary expectation remains hands-on delivery.

Appex Innovation

Senior Java Developer

Chicago, IL · Hybrid

$70 - $75/hr

Java Developer (Senior) Location: Chicago, IL - hybrid Key Areas: AI-DLC Senior Developer ... Build cloud-native backend services using Java, Spring Boot, Apache Camel, microservices, container ...

Appex Innovation

Senior Java Developer

Chicago, IL · Hybrid

$59 - $75.25/hr

Java Developer (Senior) Location: Chicago, IL - hybrid Key Areas: AI-DLC Senior Developer ... Build cloud-native backend services using Java, Spring Boot, Apache Camel, microservices, container ...

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Junior Java Backend Developer information

See Illinois salary details

$59.1K

$103.5K

$156K

How much do junior java backend developer jobs pay per year?

As of Aug 13, 2026, the average yearly pay for junior java backend developer in Illinois is $103,516.00, according to ZipRecruiter salary data. Most workers in this role earn between $73,200.00 and $103,200.00 per year, depending on experience, location, and employer.

What is a junior Java backend developer?

Junior Java Backend Developers are entry-level software engineers who specialize in building and maintaining the server-side logic of web applications using the Java programming language. They work closely with senior developers to implement APIs, manage databases, and ensure smooth data flow between servers and users. Their responsibilities often include writing clean, efficient code, debugging applications, and learning new technologies as needed. Junior Java Backend Developers typically have a foundational knowledge of Java, SQL, and frameworks like Spring Boot.

What are some common challenges faced by junior Java backend developers when joining a new team?

As a Junior Java Backend Developer, one common challenge is adapting to existing codebases and understanding the team's preferred coding standards and practices. You may also find it challenging to grasp complex system architectures or integrate your code with various APIs and databases. However, most teams provide onboarding support, code reviews, and mentorship to help you ramp up. Collaborating closely with senior developers and asking questions can significantly ease your transition and foster your growth in the role.

What are the key skills and qualifications needed to thrive as a junior Java backend developer?

To thrive as a Junior Java Backend Developer, you need solid knowledge of Java programming, understanding of object-oriented design, and familiarity with backend frameworks like Spring, often supported by a degree in computer science or related field. Experience with relational databases (e.g., MySQL), version control systems (like Git), and exposure to RESTful APIs and build tools (such as Maven) are typically required. Strong problem-solving skills, attention to detail, and effective communication make someone stand out in this role. These skills and qualities are crucial for building reliable, scalable server-side applications and collaborating effectively within a software development team.

What are the most commonly searched types of Java Backend Developer jobs in Illinois?

The most popular types of Java Backend Developer jobs in Illinois are:

What are popular job titles related to Junior Java Backend Developer jobs in Illinois?

For Junior Java Backend Developer jobs in Illinois, the most frequently searched job titles are:

What job categories do people searching Junior Java Backend Developer jobs in Illinois look for?

The top searched job categories for Junior Java Backend Developer jobs in Illinois are:

What cities in Illinois are hiring for Junior Java Backend Developer jobs?

Cities in Illinois with the most Junior Java Backend Developer job openings:

Junior Java Backend Developer jobs near you
Infographic showing various Junior Java Backend Developer job openings in Illinois as of August 2026, with employment types broken down into 82% Full Time, and 18% Contract. Highlights an 67% In-person, and 33% Remote job distribution, with an average salary of $103,516 per year, or $49.8 per hour.

Senior Backend Java and AWS Engineer

3Core Systems, Inc.

Chicago, IL • On-site

$124K - $161K/yr

Contractor

Re-posted 19 days ago

Job description


Job Title: Senior Backend Java and AWS Engineer
Location: Chicago, IL 60603 (Onsite)
Duration: 13 months contract
Must Have Skills/Attributes:
• AWS
• Java
• Spring Boot
• SQL
Experience Desired:
• Advanced Java and/or Kotlin in production environments (10 yrs)
• Strong AWS expertise (10 yrs)
• Spring Boot building microservices and REST APIs (10 yrs)
• Microservices architecture and distributed systems patterns (10 yrs)
• RESTful API design and implementation with documentation (10 yrs)
• SQL and relational databases (10 yrs)
• NoSQL non-relational data stores (10 yrs)
Required Minimum Education: Bachelor's Degree
Job Description:
Required Skills:
• Strong AWS expertise - designing and operating cloud-native, highly available distributed systems.
• Advanced Java and/or Kotlin in production environments.
• Spring Boot - building microservices and REST APIs (Spring Web/MVC, dependency injection, configuration, actuator/health checks).
• Microservices architecture and distributed systems patterns (service boundaries, resiliency, fault tolerance).
• RESTful API design and implementation with documentation (OpenAPI/Swagger).
• SQL and relational databases - data modeling, query tuning, performance optimization.
• NoSQL / non-relational data stores (e.g., DynamoDB, MongoDB, Cassandra).
• CI/CD pipelines and build/deploy automation (quality gates, repeatable releases).
• Data streaming / asynchronous messaging - event-driven patterns (e.g., Kafka).
• Observability - logging, metrics, tracing, and production troubleshooting / incident investigation.
Soft Skills (Must-Have):
• Strong technical communication skills - able to clearly explain complex designs and trade-offs to engineers, product owners, and managers.
• Collaborative mindset - ability to work effectively across teams on shared architectures and dependencies.
• Technical leadership and ownership - driving decisions and follow-through on complex engineering problems.
• Strong problem-solving and analytical thinking - especially in debugging, production support, and performance issues.
• Ability to balance technical depth with delivery - making pragmatic decisions aligned with business priorities.
• Comfortable participating in Agile ceremonies (stand-ups, sprint planning, retrospectives) while remaining primarily hands-on.
Job Requirements:
• Provide deep technical leadership for the design and implementation of Java-based, cloud-native systems on AWS.
• Define service architecture, data flows, and integration patterns to meet strict scalability, availability, and security requirements.
• Drive architectural decisions across microservices, event-driven, and asynchronous processing patterns.
• Ensure clear service ownership and well-defined contracts between services.
• Define standards for infrastructure-as-code, resiliency, fault tolerance, and graceful degradation.
• Proactively identify architectural bottlenecks, scalability constraints, and technical debt.
• Lead development of core backend services using modern Java frameworks and AWS-native patterns.
• Design and implement RESTful and event-based APIs.
• Build message-driven processing and distributed data management solutions.
• Guide adoption of AWS services including managed compute, messaging, storage, and databases.
• Investigate and resolve defects, performance issues, and production incidents.
• Implement fixes and improvements to ensure system stability and reliability.
• Support reliable operation of distributed systems in production through observability, logging, metrics, and tracing.
• Review pull requests and lead technical design discussions.
• Define architecture and implementation standards for the team.
• Establish technical best practices for CI/CD automation, observability, and production troubleshooting.
• Work closely with the engineering team to guide design and implementation of Java-based services on AWS.
• Collaborate with other engineering teams to align on APIs, integrations, and shared cloud architecture.
• Partner with Product Owners and engineering managers to translate requirements into technical solutions.
• Align execution with delivery priorities.
• Participate in architecture reviews and integration discussions.
• Participate in sprint planning, backlog refinement, stand-ups, and retrospectives.
• Attend necessary technical and operational calls.
Skill Set
Java Backend, Spring Boot, AWS, SQL

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