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Java Back End Developer Jobs in Illinois (NOW HIRING)

Addison Group

Java Developer

Chicago, IL · On-site

$50 - $55/hr

Java Developer Industry: Information Technology / Software Development Location (City, State ... Develop and maintain backend applications utilizing Java and Spring Boot. * Design, build, and ...

Addison Group

Java Developer

Chicago, IL · On-site

$50 - $55/hr

Java Developer Industry: Information Technology / Software Development Location (City, State ... Develop and maintain backend applications utilizing Java and Spring Boot. * Design, build, and ...

Addison Group

Java Developer

Chicago, IL · Hybrid

$50 - $55/hr

Java Developer Industry: Information Technology / Software Development Location (City, State ... Develop and maintain backend applications utilizing Java and Spring Boot. * Design, build, and ...

Resource 1

Java Developer

Chicago, IL · On-site

$52.50 - $68/hr

Resource 1 is in need of a Java Developer for a long-term contract. This is hybrid/ remote, so ... and back-end (SQL). Individual should have experience with full life-cycle development, from ...

Apex Informatics

Java Developer

Chicago, IL · On-site

$52.50 - $68/hr

Core Java Developer Work Location: Chicago, IL (Hybrid Role) Must have skills: AWS, Microservices ... Identify and address performance bottlenecks in both front-end and back-end components, ensuring ...

Leidos

Mid-Level Backend Software Engineer

Maryville, IL · On-site

$87K - $157K/yr

Design, develop, test, and maintain backend application components using Java or Python * REST API ... Object-Oriented Programming: Apply object-oriented design principles to build scalable and ...

Leidos

Mid-Level Backend Software Engineer

Columbia, IL · On-site

$87K - $157K/yr

Design, develop, test, and maintain backend application components using Java or Python * REST API ... Object-Oriented Programming: Apply object-oriented design principles to build scalable and ...

Leidos

Mid-Level Backend Software Engineer

Madison, IL · On-site

$87K - $157K/yr

Design, develop, test, and maintain backend application components using Java or Python * REST API ... Object-Oriented Programming: Apply object-oriented design principles to build scalable and ...

Leidos

Mid-Level Backend Software Engineer

Wood River, IL · On-site

$87K - $157K/yr

Design, develop, test, and maintain backend application components using Java or Python * REST API ... Object-Oriented Programming: Apply object-oriented design principles to build scalable and ...

Leidos

Mid-Level Backend Software Engineer

Venice, IL · On-site

$87K - $157K/yr

Design, develop, test, and maintain backend application components using Java or Python * REST API ... Object-Oriented Programming: Apply object-oriented design principles to build scalable and ...

Leidos

Mid-Level Backend Software Engineer

Belleville, IL · On-site

$87K - $157K/yr

Design, develop, test, and maintain backend application components using Java or Python * REST API ... Object-Oriented Programming: Apply object-oriented design principles to build scalable and ...

Leidos

Mid-Level Backend Software Engineer

Hartford, IL · On-site

$87K - $157K/yr

Design, develop, test, and maintain backend application components using Java or Python * REST API ... Object-Oriented Programming: Apply object-oriented design principles to build scalable and ...

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Java Back End Developer information

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$9

$52

$71

How much do java back end developer jobs pay per hour?

As of Jul 22, 2026, the average hourly pay for java back end developer in Illinois is $52.94, according to ZipRecruiter salary data. Most workers in this role earn between $47.07 and $61.01 per hour, depending on experience, location, and employer.

What does a typical day look like for a Java Back End Developer?

A typical day for a Java Back End Developer often involves writing and reviewing code, designing and implementing APIs, and collaborating with front-end developers, QA testers, and other team members to ensure seamless integration and functionality. Developers participate in daily stand-up meetings, work with version control systems, troubleshoot technical issues, and continually optimize application performance. You may also engage in code reviews, work on database design, or implement new features based on customer or business needs. This dynamic environment emphasizes both independent problem-solving and teamwork, offering continuous learning opportunities and a fast-paced, innovative workflow.

What is a Java Back End Developer job?

A Java Back End Developer is responsible for building and maintaining the server-side logic of web applications using Java. They work with databases, APIs, and server architecture to ensure smooth data processing and application functionality. Their tasks include writing efficient code, optimizing performance, and integrating front-end components. They often use frameworks like Spring Boot and Hibernate to develop scalable and secure applications.

What are the key skills and qualifications needed to thrive in the Java Back End Developer position, and why are they important?

To thrive as a Java Back End Developer, you need solid proficiency in Java programming, knowledge of frameworks like Spring or Hibernate, and experience with database management, often supported by a degree in computer science or related fields. Familiarity with tools such as Git, RESTful APIs, build automation systems (e.g., Maven/Gradle), and sometimes certifications like Oracle Certified Professional, Java SE, are highly valued. Strong problem-solving skills, attention to detail, effective communication, and a collaborative mindset help professionals excel in this role. These combined technical and soft skills are crucial for developing robust, scalable back-end systems and ensuring smooth teamwork in dynamic software development environments.

What are popular job titles related to Java Back End Developer jobs in Illinois? For Java Back End Developer jobs in Illinois, the most frequently searched job titles are:
What job categories do people searching Java Back End Developer jobs in Illinois look for? The top searched job categories for Java Back End Developer jobs in Illinois are:
What are popular job titles related to Java Back End Developer jobs in IL? For Java Back End Developer jobs in IL, the most frequently searched job titles are:
Java Back End Developer jobs near you
Infographic showing various Java Back End Developer job openings in Illinois as of July 2026, with employment types broken down into 1% As Needed, 75% Full Time, 20% Part Time, and 4% Contract. Highlights an 93% Physical, 1% Hybrid, and 6% Remote job distribution, with an average salary of $110,112 per year, or $52.9 per hour.
Senior Java with AI Experience

Senior Java with AI Experience

Lorven Technologies

Chicago, IL • On-site

$59 - $75.25/hr

Full-time

Posted 3 days ago

New

Job description

Role: Senior Java with AI Experience
Location: Chicago IL (Hybrid)
Project description
  • Digital Technology team designs, develops, and maintains massively scaling technology solutions brought to life with innovative architectures, data analytics, digital solutions, and practical AI-enabled capabilities.
  • The Notifications team enables enterprise communication capabilities supporting customer and crew portfolios.
  • This contractor role will focus on hands-on design, development, modernization, and production delivery of notification platform services, integrations, event-driven capabilities, and AI-enabled communication use cases.

Responsibilities
  • The role of Senior Developer will have a technical focus on enabling Notifications at the enterprise level and supporting a robust communication platform for customer and crew portfolios. This is a hands-on senior individual contributor role. This is not a management role. The expectation is to actively design, code, debug, optimize, deploy, and support production-grade solutions.
  • Design AND implement core services for the enterprise Notifications platform, including APIs, event-driven integrations, orchestration components, templates, and platform capabilities.
  • Write, review, debug, and optimize production code actively; lead through hands-on engineering contribution rather than delegation.
  • Build cloud-native backend services using Java, Spring Boot, Apache Camel, microservices, container technologies, and AWS services.
  • Develop and integrate AI/GenAI capabilities hands-on, including prompt design, LLM integration, RAG pipelines, embeddings/vector search, semantic search, classification, summarization, and AI-assisted communication workflows.
  • Prototype, validate, and productionize AI-enabled features while considering latency, accuracy, cost, monitoring, fallback design, and operational reliability.
  • Design solutions for high availability, scalability, resiliency, observability, performance, security, privacy, and compliance needs.
  • Support integrations with internal enterprise systems, eventing platforms, data providers, communication providers, and vendor-managed services as needed.
  • Troubleshoot and resolve complex production issues directly, including performance bottlenecks, integration failures, data issues, and system reliability concerns.
  • Work closely with architects, product owners, business stakeholders, development teams, and vendor teams to convert requirements into working solutions.
  • Contribute to technical design, system documentation, code reviews, automated testing, CI/CD pipelines, release readiness, and production support practices.
  • Ensure solutions are aligned with enterprise engineering standards, security expectations, and application lifecycle best practices.
  • Mentor developers through code-level guidance, design reviews, and engineering best practices; however, the primary expectation remains hands-on delivery.

Skills Must have
  • Bachelor's degree in Computer Science, Information Systems, Engineering, related field, or equivalent work experience required.
  • Minimum 8 years of overall experience in software engineering, application development, integration, and SDLC delivery.
  • Strong recent hands-on software development experience; candidate must be comfortable spending majority of time coding, debugging, designing, and delivering working software.
  • Minimum 8 years of hands-on Java backend development experience, including Spring Boot, REST APIs, microservices, and open-source technologies.
  • Minimum 3 years of hands-on experience with event-driven systems, messaging, streaming, integration, or notification platform capabilities.
  • Hands-on experience with Apache Camel or equivalent enterprise integration frameworks.
  • Minimum 4 years of hands-on experience with AWS or equivalent cloud services such as EC2, S3, RDS, VPC, CloudFront, Lambda, EKS, ECS, API Gateway, DynamoDB, DocumentDB, AmazonMQ, or related services.
  • Strong hands-on AI/GenAI implementation experience in enterprise or production-grade applications; AI experience should not be limited to strategy, vendor discussions, or conceptual understanding.
  • Practical experience involves personally implementing one or more AI capabilities such as LLM integration, prompt engineering, RAG, embeddings/vector search, semantic search, classification, summarization, AI-assisted workflow automation, or decision-support capabilities.
  • Understanding responsible AI and secure AI engineering practices, including data privacy, access control, guardrails, evaluation, monitoring, hallucination risk, human review where needed, and auditability.
  • Experience with observability and analytics tools such as Dynatrace, ELK Stack, CloudWatch, or equivalent tools.
  • Experience working in agile delivery environments where CI/CD, automated testing, code quality, deployment readiness, and production support are critical.
  • Demonstrated knowledge of software engineering best practices such as version control, software packaging, release management, automated testing, secure coding, and operational readiness.
  • Strong analytical and problem-solving skills with ability to diagnose complex technical issues independently.
  • Must be self-motivated, collaborative, and able to communicate effectively with technical and non-technical stakeholders.
  • What will help you propel from the pack (Preferred Qualifications):
  • Experience designing and developing enterprise notification, communication, customer messaging, content management, or eventing platform solutions.
  • Experience with Twilio or similar communication/messaging platforms.
  • Experience applying AI to communication use cases such as personalization, routing, prioritization, content quality checks, template assistance, intent classification, summarization, or operational anomaly detection.
  • Experience with AI observability, LLMOps/MLOps practices, model/prompt evaluation, AI guardrails, and production monitoring of AI-enabled features.
  • AWS certification or equivalent cloud certification.
  • Experience in high-scale, 24x7 production environments.

Nice to have
Airline, travel, customer platforms, or crew operations domain experience.
Lorven technologies logo

About Lorven technologies

Sourced by ZipRecruiter

Lorven Technologies, headquartered in Plainsboro, New Jersey, United States, is a reputable company in the technology industry, specializing in providing effective IT solutions and consulting services. The company's official website, lorventech.com, offers comprehensive insights into its offerings which include but are not limited to software development, IT consulting, project management, and business analysis. Since its inception, Lorven Technologies has been committed to ensuring efficiency and reliability in delivering IT services to its global clientele, establishing itself as a trusted name in the industry.

Industry

It services

Company size

51 - 200 Employees

Headquarters location

Plainsboro, NJ, US

Year founded

2001

Social media

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