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Sr Core Java Developer Jobs in Elk Grove Village, IL

Sonsoft Inc

Core Java Developer

Chicago, IL · On-site

Preferred At least 4 years of experience working on Core Java/Spring . Atleast 4 years of experience with TDD based development and re-engineering of existing application to incorporate unit tests ...

Sonsoft Inc

Core Java Developer

Chicago, IL · On-site

Preferred At least 4 years of experience working on Core Java/Spring . Atleast 4 years of experience with TDD based development and re-engineering of existing application to incorporate unit tests ...

Navtech, Inc.

Java Developer

Chicago, IL · On-site

$52.50 - $68/hr

Looking for strong core Java skills. They do support microservices and APIs. Springboot experience ... Best Regards Chris Brown Sr Technical Recruiter NAVTECH INC PH : 224-296-3522 Email : chris ...

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, testing, Amazon RDS or DynamoDB Roles: 1. ** Application Development: ** Design, code, test, and ...

Judge Group, Inc.

Core Java - Intermediate

Chicago, IL · On-site

$60 - $61/hr

Core Java Looking for curious, aws certified, Java,ETL engineer. Description Job responsibilities Develop and maintain applications using Apache Spark and Java Work with different aspects of spark ...

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 to work in the United States for any employer without sponsorship. We are hiring a Senior Java ...

Programmers.io

Senior Java Developer

Chicago, IL · On-site

$59 - $75.25/hr

Java Spring boot Java, Spring MVC, Angular Js, Rest Webservices, React Js Keyword: Skills: Digital : Spring Boot Experience Required: 8-10 Comments for Suppliers: Role:Senior Developer Location:

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How much do sr core java developer jobs pay per hour?

As of Aug 25, 2026, the average hourly pay for sr core java developer in Elk Grove Village, IL is $61.99, according to ZipRecruiter salary data. Most workers in this role earn between $54.33 and $69.28 per hour, depending on experience, location, and employer.

What is a Sr Core Java Developer?

A Sr Core Java Developer is an experienced software engineer who specializes in designing, developing, and maintaining applications using the core features of the Java programming language. Their responsibilities typically include writing efficient code, optimizing application performance, mentoring junior developers, and ensuring that software solutions adhere to best practices and industry standards. These professionals often work on backend systems, APIs, and large-scale enterprise applications. They are expected to have deep knowledge of Java fundamentals, object-oriented programming, multithreading, and related frameworks and tools.

What are the key skills and qualifications needed to thrive as a Sr Core Java Developer?

To thrive as a Sr Core Java Developer, you need deep expertise in Java programming, object-oriented design, and a solid grasp of algorithms, data structures, and software development methodologies, typically supported by a degree in computer science or related field. Familiarity with frameworks like Spring, build tools such as Maven or Gradle, version control systems like Git, and experience with CI/CD pipelines and unit testing frameworks are commonly required. Strong problem-solving abilities, effective communication, and teamwork skills help you collaborate on complex projects and mentor junior developers. These skills ensure robust, scalable software solutions and efficient development processes in a dynamic technology environment.

What are some common challenges Sr Core Java Developers face when working on large-scale enterprise applications?

Sr Core Java Developers often encounter challenges such as maintaining code quality in complex systems, optimizing application performance, and ensuring scalability as user demands grow. They also need to navigate legacy codebases, integrate with various third-party APIs, and coordinate with cross-functional teams like DevOps, QA, and business analysts. Effective communication and strong problem-solving skills are essential to address these challenges and deliver robust, maintainable solutions.
Sr Core Java Developer jobs near you

Senior Software Engineer - Low Latency Trading / Core Java

Chicago, IL • On-site

Hudson Manpower
See more jobs at Hudson Manpowerexternal

$45 - $50/hr

Full-time

Posted 5 days ago

Job description

Job Summary
We are seeking a Senior Core Java Engineer with recent, hands-on experience developing low- or ultra-low-latency electronic trading systems. The ideal candidate will have a strong understanding of actual trading workflows and experience building performance-sensitive backend systems.
Location: Chicago, IL - Hybrid (2 days onsite required)
Type: Long-term Contract
Preferred Background
Candidates with experience in the following areas are highly preferred:
  • Matching engines
  • Order books
  • Market data processing
  • Exchange connectivity
  • Order routing
  • Trading gateways
  • Other performance-sensitive backend trading systems
  • Experience within trading firms, banks, or exchanges

Required Skills & Experience
  • Strong expertise in Core Java
  • Recent hands-on experience with low-latency or ultra-low-latency electronic trading
  • Strong understanding of market data, order books, and trading logic
  • Excellent knowledge of multithreading and concurrency
  • Experience with TCP/UDP networking
  • Strong Linux experience
  • Proven experience with production performance and latency troubleshooting
  • Experience developing performance-sensitive backend trading systems

Important Candidate Requirements
Candidates must have actual low-latency trading development experience. Financial-services experience alone is not sufficient.

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