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Per Diem Java Spring Developer Jobs in Illinois (NOW HIRING)

Long Finch Technologies

$50.50 - $65/hr

We are looking for an experienced Senior Java Full Stack Developer with strong hands-on expertise in Java, Spring Boot, Spring Batch, and QA Automation. The ideal candidate will design, develop, and ...

Kanak Elite Services Inc

Java AWS Developer

Chicago, IL · On-site

$52.50 - $68/hr

CHICAGO, IL(HYBRID) (NEED SOMEONE WITH 5-7 YERS OF EXPERINCE) We're looking for a Java AWS Developer with strong expertise in Java (Spring Boot), AWS cloud services, and microservices development.

Spruce Infotech

Java Full Stack Developer-Azure

Chicago, IL · On-site

$54 - $69.75/hr

Job Title: Java Full Stack Developer-Azure Location: Chicago, IL (Hybrid) Positions: 1-3 Job ... The ideal candidate will have hands-on expertise in Java, Spring Boot, Microservices, React , and ...

1 point system

Java Developer

Riverwoods, IL · On-site

$53 - $68.50/hr

You'll work across Java/Spring microservices, AWS EMR/Spark workloads, and a mature testing culture ... Collaborate with cross-functional teams (cloud engineering, data engineering, architecture, QA, and ...

Spruce Infotech

Sr Java Developer PCF

Chicago, IL · On-site

$59 - $75.25/hr

Key Skills: * Java * Spring Boot * Microservices Architecture * PCF (Pivotal Cloud Foundry ... Improve overall engineering quality through best practices, code reviews, and performance ...

IVID TEK INC

Sr Java Developer

Chicago, IL · On-site

$59 - $75.25/hr

Senior Java Developer Location: Chicago, IL Employment Type: Full-time Must be legally authorized ... Develop Spring Boot microservices using JDK 11/17 , JAX-RS (Apache CXF) , and Jackson JSON/XML for ...

Laksan Technologies

Java Fullstack Developer

Chicago, IL · On-site

$54 - $69.75/hr

Java Fullstack Developer Location: Chicago, Illinois Job Type: C2C Onsite Long-term We are looking ... Develop and maintain scalable web applications using Java (Spring Boot) and React.Design RESTful ...

DRC Systems

Java Engineer

Chicago, IL · On-site

$65 - $72/hr

... Spring/Microservices/API/Kafka + AWS Must be strong with API's Must have good end to end CICD ... per day - Payments app experience is a HUGE plus Any devops experience is a big plus 5-6 years ...

Apex Informatics

Java Full Stack Developer

Chicago, IL · On-site

$54 - $69.75/hr

Java/Spring/Microservices/React/AWS - These are MUST have's with minimum 10+ years of experience * Preference is a senior level hands on developer * Must have very strong API experience * Must have ...

Anagh Technologies, Inc.

Java Angular

Chicago, IL · On-site

$54 - $69.75/hr

4 Full Stack Engineers (React or Angular, Java/Spring, AWS), Capital One/Chicago, Hybrid, CTH - GC/USC , 2 Senior roles: 10+ years, need to be very hands on, work independently, understand design ...

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Per Diem Java Spring Developer information

What is a per diem Java Spring developer?

A Per Diem Java Spring Developer is a software engineer who specializes in building applications using the Java programming language and the Spring framework, and works on a per diem (as-needed or daily) basis. This role typically involves developing, testing, and maintaining Java-based applications, often for clients who require short-term or flexible staffing. Per diem developers may work on various projects, such as web applications, microservices, or enterprise solutions, depending on the client's needs. Their flexible work arrangement allows companies to scale their development teams as necessary without committing to full-time hires.

What are the key skills and qualifications needed to thrive as a per diem Java Spring developer?

To thrive as a Per Diem Java Spring Developer, you need strong proficiency in Java programming, experience with the Spring framework, and a solid understanding of software development principles, often supported by a degree in computer science or related certifications. Familiarity with tools like Maven, Git, and CI/CD systems, as well as knowledge of RESTful APIs, is typically required. Strong problem-solving abilities, adaptability, and effective communication skills help you excel in dynamic, project-based environments. These competencies ensure you can deliver high-quality, maintainable code efficiently while collaborating with diverse teams on short-term assignments.

How does working as a per diem Java Spring developer differ from a full-time developer in terms of project involvement and team interaction?

As a Per Diem Java Spring Developer, you typically engage with projects on a flexible or as-needed basis, which may mean shorter-term assignments or focusing on specific tasks rather than long-term feature development. You'll often be brought in to address urgent needs, provide specialized expertise, or assist during peak workload periods. Team interaction is usually more focused, with communication centered around immediate deliverables and integrating your contributions into ongoing projects. While you may not participate in every phase of the development cycle, effective collaboration and quick adaptation to team standards are essential for success.

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

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

What are popular job titles related to Per Diem Java Spring Developer jobs in Illinois?

For Per Diem Java Spring Developer jobs in Illinois, the most frequently searched job titles are:

What job categories do people searching Per Diem Java Spring Developer jobs in Illinois look for?

The top searched job categories for Per Diem Java Spring Developer jobs in Illinois are:

Per Diem Java Spring Developer jobs near you

Senior Java Full Stack Engineer - Spring Boot & Spring Batch

Long Finch Technologies

Bloomington, IL • On-site

$50.25 - $65/hr

Full-time

This job post has expired 1 day ago. Applications are no longer accepted.

Job description

We are looking for an experienced Senior Java Full Stack Developer with strong hands-on expertise in Java, Spring Boot, Spring Batch, and QA Automation. The ideal candidate will design, develop, and support scalable enterprise applications, build high-performance microservices, implement robust batch processing solutions, and drive automation and quality engineering practices.

Key Responsibilities
  • Design, develop, and maintain high-throughput Java/Spring Boot microservices for enterprise data processing and integration workflows.
  • Lead the development of Spring Batch applications for end-to-end data pipelines, including ingestion, validation, transformation, persistence, reconciliation, and status tracking.
  • Build secure and scalable REST API integrations with internal and external systems using Spring technologies.
  • Implement OAuth2 client credentials authentication, API retry mechanisms, timeout strategies, and observability-focused logging.
  • Develop file-to-database and API-to-database synchronization processes with strong data accuracy and traceability.
  • Implement batch processing best practices including restartability, idempotency, chunk processing, partitioning, and error recovery.
  • Design and optimize database workflows using PostgreSQL, including schema-aware CRUD operations, transaction management, indexing, and query optimization.
  • Establish automated quality gates using BDD and integration testing frameworks, including Cucumber and JUnit.
  • Perform API validation, database testing, and edge-case automation to ensure application reliability.
  • Drive production readiness through monitoring, health checks, exception handling, diagnostics, alerting, and operational support practices.
  • Collaborate with cross-functional teams including QA, DevOps, Product, and Data teams to deliver reliable software solutions.
  • Mentor developers through code reviews, architecture discussions, and engineering best practices.
Required Technical Skills
  • 8+ years of hands-on experience in Java development with strong knowledge of OOP principles, collections, concurrency concepts, and clean coding practices.
  • Strong expertise in Spring Boot and Spring Batch, including:
    • Job and step configuration
    • Item readers, processors, and writers
    • Chunk-based processing
    • Partitioning
    • Job restart and recovery strategies
  • Experience developing and consuming RESTful APIs using Spring MVC/WebFlux with secure service-to-service communication.
  • Strong knowledge of PostgreSQL and SQL, including:
    • Complex queries
    • Database transactions
    • Indexing strategies
    • Performance tuning
    • Large-volume ETL/data processing workloads
  • Hands-on experience with Spring Data JPA and JDBC Template for ORM-based and query-driven data access.
  • Experience with QA automation frameworks including:
    • Cucumber
    • JUnit
    • API automation
    • Database validation testing
  • Experience with build and deployment tools such as:
    • Maven
    • Docker
    • CI/CD pipelines

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