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Senior Java Developer Jobs in Crystal Lake, IL (NOW HIRING)

Long Finch Technologies

Senior Graph Developer

Addison, IL · Hybrid

$54.50 - $72.25/hr

We are seeking an experienced Senior Graph Developer to design, build, and scale enterprise-level ... Advanced programming experience in Python or JVM-based languages such as Java or Scala. * Strong ...

Long Finch Technologies

Senior Graph Developer

Medinah, IL · Hybrid

$54.25 - $71.75/hr

We are seeking an experienced Senior Graph Developer to design, build, and scale enterprise-level ... Advanced programming experience in Python or JVM-based languages such as Java or Scala. * Strong ...

Long Finch Technologies

Senior Graph Developer

Roselle, IL · Hybrid

$54.75 - $72.25/hr

We are seeking an experienced Senior Graph Developer to design, build, and scale enterprise-level ... Advanced programming experience in Python or JVM-based languages such as Java or Scala. * Strong ...

Long Finch Technologies

Senior Graph Developer

Schaumburg, IL · Hybrid

$53.50 - $70.75/hr

We are seeking an experienced Senior Graph Developer to design, build, and scale enterprise-level ... Advanced programming experience in Python or JVM-based languages such as Java or Scala. * Strong ...

Long Finch Technologies

Senior Graph Developer

Wheeling, IL · Hybrid

$56.50 - $74.50/hr

We are seeking an experienced Senior Graph Developer to design, build, and scale enterprise-level ... Advanced programming experience in Python or JVM-based languages such as Java or Scala. * Strong ...

Long Finch Technologies

Senior Graph Developer

Ridgefield, IL · Hybrid

$53 - $69.75/hr

We are seeking an experienced Senior Graph Developer to design, build, and scale enterprise-level ... Advanced programming experience in Python or JVM-based languages such as Java or Scala. * Strong ...

Long Finch Technologies

Senior Graph Developer

Streamwood, IL · Hybrid

$53.75 - $71.25/hr

We are seeking an experienced Senior Graph Developer to design, build, and scale enterprise-level ... Advanced programming experience in Python or JVM-based languages such as Java or Scala. * Strong ...

Long Finch Technologies

Senior Graph Developer

Palatine, IL · Hybrid

$54.75 - $72.25/hr

We are seeking an experienced Senior Graph Developer to design, build, and scale enterprise-level ... Advanced programming experience in Python or JVM-based languages such as Java or Scala. * Strong ...

United Airlines

Senior Developer - IT

Arlington Heights, IL · On-site

$55.25 - $73/hr

Job overview and responsibilities The Senior Software Developer will be responsible for the ... Hands-on development and proficient excellence in backend API development using Node.js Java and ...

ULINE

Senior Software Engineer

Waukegan, IL · On-site

$116K - $153K/yr

  • Medical

  • Retirement

  • PTO

Senior Software Engineer Corporate Headquarters 12575 Uline Drive, Pleasant Prairie, WI 53158 Are ... Build and secure scalable cloud-native applications using Java and Spring Boot. * Enhance system ...

HP Tuners LLC

Mobile Application Developer, Senior

Buffalo Grove, IL · On-site

$130K - $140K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

The Senior Mobile Application Developer develops new mobile applications and updates, maintains ... Android native development experience (Android Studio with Java or Kotlin). Strong understanding of ...

United Airlines

Senior Developer - IT

Arlington Heights, IL · On-site

$112.48 - $146.54/hr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Job Overview and Responsibilities The Senior Software Developer will be responsible for the ... Hands-on development and proficient excellence in backend API development using Node.js Java and ...

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All JobsJava Developer JobsSenior Java Developer JobsSenior Java Developer Jobs in Crystal Lake, IL

Senior Java Developer information

See Crystal Lake, IL salary details

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How much do senior java developer jobs pay per hour?

As of Aug 19, 2026, the average hourly pay for senior java developer in Crystal Lake, IL is $60.93, according to ZipRecruiter salary data. Most workers in this role earn between $53.37 and $68.08 per hour, depending on experience, location, and employer.

What is a senior Java developer?

Senior Java Developers are experienced software engineers who specialize in using the Java programming language to design, develop, and maintain complex applications. They typically lead development teams, oversee project architecture, and ensure code quality through best practices. In addition to strong coding skills, they often mentor junior developers and collaborate with stakeholders to deliver robust software solutions. Their expertise is crucial in building scalable, high-performance applications across various industries.

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

To thrive as a Senior Java Developer, you need advanced proficiency in Java programming, experience with software design patterns, and a strong grasp of backend development, often supported by a degree in computer science or related field. Familiarity with frameworks like Spring, build tools such as Maven or Gradle, and version control systems like Git, as well as knowledge of cloud platforms, is typically required. Excellent problem-solving, leadership, and communication skills help you guide teams and collaborate effectively. These competencies are crucial for delivering robust, scalable software solutions and driving technical success within development teams.

What are some common challenges senior Java developers face when working on large-scale enterprise projects?

Senior Java Developers often encounter challenges such as maintaining code quality across large codebases, managing dependencies between modules, and ensuring optimal application performance. Collaborating with cross-functional teams—including QA, DevOps, and product management—requires clear communication and effective problem-solving. Additionally, staying updated with the latest Java frameworks and best practices is essential for delivering scalable and maintainable solutions in complex enterprise environments.

What is the difference between Senior Java Developer vs Java Software Engineer?

AspectSenior Java DeveloperJava Software Engineer
Required CredentialsBachelor's in CS or related, Java certifications often preferredBachelor's in CS or related, Java certifications beneficial
Work EnvironmentTeam lead roles, project management, mentoringDevelopment-focused, coding, testing, and implementation
Employer & Industry UsageTech companies, finance, e-commerceSoftware firms, startups, enterprise IT
Common Search & ComparisonOften compared for experience level and responsibilitiesSimilar roles with slight variations in scope

The main difference between a Senior Java Developer and a Java Software Engineer lies in their responsibilities and experience. Senior Java Developers typically take on leadership, mentoring, and project management roles, while Java Software Engineers focus more on coding, development, and technical implementation. Both roles require strong Java skills and relevant credentials, but the Senior Java Developer usually has more experience and a broader scope of responsibilities.

What are popular job titles related to Senior Java Developer jobs in Crystal Lake, IL?

For Senior Java Developer jobs in Crystal Lake, IL, the most frequently searched job titles are:

What job categories do people searching Senior Java Developer jobs in Crystal Lake, IL look for?

The top searched job categories for Senior Java Developer jobs in Crystal Lake, IL are:

What cities near Crystal Lake, IL are hiring for Senior Java Developer jobs?

Cities near Crystal Lake, IL with the most Senior Java Developer job openings:

Senior Java Developer jobs near you
Infographic showing various Senior Java Developer job openings in Crystal Lake, IL as of August 2026, with employment types broken down into 80% Full Time, 6% Part Time, and 14% Contract. Highlights an 83% Physical, 5% Hybrid, and 12% Remote job distribution, with an average salary of $126,732 per year, or $60.9 per hour.

Senior Graph Developer

Long Finch Technologies

Rolling Meadows, IL • Hybrid

$54.75 - $72.50/hr

Full-time

Posted 6 days ago

Job description

We are seeking an experienced Senior Graph Developer to design, build, and scale enterprise-level graph database solutions. The ideal candidate will have extensive hands-on experience with Amazon Neptune, SPARQL/Gremlin, data engineering pipelines, and GraphRAG architectures. This role will focus on developing knowledge graphs, optimizing graph database environments, and integrating graph technologies with Generative AI solutions to improve contextual understanding and reduce AI hallucinations.

Required Qualifications
  • Bachelor’s or Master’s degree in Computer Science, Data Science, Information Architecture, or a related technical field.
  • 10+ years of professional experience in software engineering, data engineering, or graph technology development.
  • Extensive hands-on experience designing, implementing, and managing production-scale Amazon Neptune graph database environments.
  • Strong expertise in graph query languages such as SPARQL and/or Gremlin.
  • Strong experience designing and developing data engineering and ETL pipelines.
  • Practical experience implementing GraphRAG solutions and integrating knowledge graphs with AI/ML workflows.
  • Advanced programming experience in Python or JVM-based languages such as Java or Scala.
  • Strong understanding of AWS cloud services, including:
    • Amazon Neptune
    • AWS S3
    • Amazon RDS
    • Amazon ECS
  • Experience designing enterprise ontologies, taxonomies, and graph schemas.
Preferred Qualifications
  • Experience with Generative AI integration and LLM-based applications.
  • Experience building backend APIs and services.
  • Experience integrating graph databases with vector databases and hybrid search architectures.
  • Strong understanding of knowledge graph modeling and semantic technologies.
  • Experience working with large-scale distributed systems.
Key Responsibilities
  • Design and develop enterprise ontologies, taxonomies, and graph schemas representing complex business domains.
  • Architect, configure, monitor, and scale Amazon Neptune environments capable of handling billions of relationships.
  • Develop and optimize graph data models, queries, and performance tuning strategies using SPARQL and/or Gremlin.
  • Build and maintain data ingestion frameworks and ETL pipelines for graph-based applications.
  • Integrate knowledge graphs into GraphRAG pipelines to improve AI response accuracy, contextual grounding, and reduce hallucinations.
  • Partner with AI/ML teams to implement hybrid search solutions combining graph traversal capabilities with vector database technologies.
  • Develop scalable backend services and APIs supporting graph-powered applications.
  • Collaborate with architecture, engineering, and business teams to translate complex requirements into scalable graph solutions.
  • Ensure reliability, security, and performance of graph database infrastructure.

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