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

ULINE

Senior Software Engineer

Waukegan, IL · On-site

$116K - $153K/yr

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 ...

Syntricate Technologies

Senior PEGA Developer

Schaumburg, IL · On-site

$55.50 - $72.75/hr

Syntricate Technologies is seeking a Senior PEGA Developer to join their team. The main ... Required : • PEGA/XML/JAVA/SQL • Having 12+ years of development experience • 10+ years of ...

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 ...

Infosys

Java Full Stack Developer

Elgin, IL · On-site

$52 - $67/hr

In the assigned Job Role of Technology Consultant 2, your Area Of Responsibility will be as below: • Contribute to the requirements elicitation process by documenting assigned parts of business ...

UnitedHealth Group

Senior Software Engineer

Schaumburg, IL · Remote

$120K - $158K/yr

As a Senior Software Engineer within Optum Technology, you will drive the design, development, and ... Java, Spring Boot, Docker, and Kubernetes across the full software development lifecycle

UnitedHealth Group

Senior Software Engineer

Schaumburg, IL · Remote

$120K - $158K/yr

As a Senior Software Engineer within Optum Technology, you will drive the design, development, and ... Java, Spring Boot, Docker, and Kubernetes across the full software development lifecycle

UnitedHealth Group

Senior Software Engineer

Schaumburg, IL · On-site

$120K - $158K/yr

As a Senior Software Engineer within Optum Technology, you will drive the design, development, and ... Java, Spring Boot, Docker, and Kubernetes across the full software development lifecycle

Deutsche Bank

Senior Engineer

Cary, IL · On-site

$143K - $165K/yr

Senior Engineer Location: Cary, NC Overview DB Global Technology, Inc. seeks a Senior Engineer in ... Java and Spring Boot; designing distributed system architectures and developing RESTful and SOAP ...

Pampered Chef LTD

Senior Software Engineer

Addison, IL · On-site

$125K - $135K/yr

We are looking for a Senior Software Engineer who wants to contribute at a high technical level ... Backend: Node.js, Java, REST APIs * Eventing: Kafka * Cloud: AWS (EC2, S3, CloudFormation, Lambda)

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

Senior Java Developer information

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How much do senior java developer jobs pay per hour?

As of Sep 10, 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 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 82% Full Time, 6% Part Time, and 12% Contract. Highlights an 84% Physical, 4% Hybrid, and 12% Remote job distribution, with an average salary of $126,732 per year, or $60.9 per hour.

Senior Developer - IT

Arlington Heights, IL • On-site

United Airlines, Inc.
Aviation • 10K+ employees
Learn more about United Airlines, Inc.external

$54.50 - $72/hr

Full-time

Re-posted 28 days ago

United Airlines rating

7.9

Company rating: 7.9 out of 10

Based on 343 frontline employees who took The Breakroom Quiz

8th of 26 rated airlines

Job description

Description
United's Digital Technology team is comprised of many talented individuals all working together with cutting-edge technology to build the best airline in the history of aviation. Our team designs, develops and maintains massively scaling technology solutions brought to life with innovative architectures, data analytics, and digital solutions.
Job overview and responsibilities
The Senior Software Developer will be responsible for the development of critical applications, while working with a team of developers. This role will design, develop, document, test and debug new and existing applications. Additionally, this role will build these applications with a focus on delivering cloud-based solutions. The individual will use groundbreaking technologies and enterprise grade integration software daily and will be relied upon to help take the team to the next level from a technological standpoint.
  • Manages and participates in full development life cycle including requirements analysis and design using Agile methodologies

  • Serve as technical expert on development projects

  • Write technical specifications based on conceptual design and stated business requirements

  • Support, maintain, and document software functionality

  • Identify and evaluate new technologies for implementation

  • Analyze code to find causes of errors and revise programs as needed

  • Managers and participates in software design meetings and analyze user needs to determine technical requirements

  • Collaborate & lead tech teams consisting of employees & vendor company contractors in planning and execution, serving as an technology leader

  • Collaborate with end user to prototype, refine, test, and debug programs to meet needs

Qualifications
What's needed to succeed (Minimum Qualifications):
  • Bachelor's degree in Computer Science, Computer Engineering, Electrical Engineering, Management Information Systems or related field

  • 4+ years of experience in design, development, documenting, testing, and debugging of new and existing software systems and/or applications for market sale or large-scale proprietary software for internal use in an agile environment

  • 4+ years' experience implementing AWS technologies (Lambda, Step Functions, CloudWatch, CloudFront, Cognito, route53, Dynamo DB, ECS, EC2, S3, RDS, API Gateway). Active MQ, RDS - Aurora Postgres, , Route 53, Secrets Manager, Parameter Store, Cloudwatch, EFS

  • Experience with Cloud Automation Development Tool such as Git, Python/Bash/PowerShell Scripting

  • Hands-on development and proficient excellence in backend API development using Node.js Java and Python (nice to have)

  • 4+ years' experience in Java 25, Springboot 2.7 & 3, Node JS 9.5 & Angular 15, Python ; Code Repo: Github Cloud ; CI/CD (DevOps): Harness (1st Gen, Next Gen); Image Repo: Artifactory (Cloud) ; Container Orchestration: Kubernetes

  • Strong knowledg of Microsoft .Net Framework, Microsoft .Net Core, SLQ, NoSQL and Design Pattersn

  • Knowledge of APIs, JSON, XML, and OAuth

  • AI : Claude, Agentic AI or CoPilot in SDLC

  • Excellent knowledge of Object-Oriented systems design and Application Development

  • Web development, API integrations, Cloud technologies

  • Experience in AI domains.

  • Solid technical understanding of cloud platforms (AWS/Azure/GCP), APIs, CI/CD, web technologies, and DevOps practices.

  • Experience with Agile/Scrum or SAFe frameworks and tools (e.g., Jira, Confluence, Azure DevOps).

  • Excellent communication, leadership, and documentation abilities.

  • Must be legally authorized to work in the United States for any employer without sponsorship

  • Successful completion of interview required to meet job qualification

  • Reliable, punctual attendance is an essential function of the position

What United Airlines employees say

Pay

Benefits

Hours and flexibility

Workplace

Get the full story on Breakroom

United Airlines logo

About United Airlines

Sourced by ZipRecruiter

United Airlines is embarking on an exciting journey to become the best airline in aviation history. Our purpose, "Connecting People, Uniting the World," extends beyond transportation, emphasizing our commitment to uplift and create opportunities in the places we serve. With a global presence and diverse workforce, we value inclusivity and are dedicated to hiring tens of thousands of individuals across various roles. Our comprehensive benefits package, including perks like space available travel, parental leave, and 401k, aims to support your well-being and growth.

Industry

Aviation

Company size

10,000+ Employees

Headquarters location

Chicago, IL, US

Year founded

1926

Social media

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