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Senior Full Stack Java Developer Jobs in Crystal Lake, IL

Innovizant LLC

Java Developer/Architect

Schaumburg, IL · On-site

$61.75 - $83.50/hr

Innovizant LLC, is a Full-service IT provider, focused on delivering Innovative and value driven ... Role: Java Developer/Architect (Data) Location: Schaumburg, IL Full Time (Direct Hire) Must Have:

Innovizant LLC

Java Developer/Architect

Schaumburg, IL · On-site

$61.75 - $83.50/hr

Innovizant LLC, is a Full-service IT provider, focused on delivering Innovative and value driven ... Role: Java Developer/Architect (Data) Location: Schaumburg, IL Full Time (Direct Hire) Must Have ...

Zoro

Software Developer- Full Stack

Buffalo Grove, IL · On-site

We want to bridge the gap between web developers and traditional tech ops by building processes that support our infrastructure including data management, monitoring, and deployment. This role ...

Zoro

Software Developer- Full Stack

Buffalo Grove, IL · On-site

We want to bridge the gap between web developers and traditional tech ops by building processes that support our infrastructure including data management, monitoring, and deployment. This role ...

ULINE

Senior Software Developer - Web

Waukegan, IL · On-site

$96K - $148K/yr

As a Senior Software Developer, you'll apply your full-stack expertise to create scalable, high ... NET, Java JavaScript or TypeScript. * Familiarity with SQL queries and stored procedures. * Uline ...

Uline

Senior Software Developer - Web

Waukegan, IL

$96K - $148K/yr

As a Senior Software Developer, you'll apply your full-stack expertise to create scalable, high ... NET, Java JavaScript or TypeScript. * Familiarity with SQL queries and stored procedures. * Uline ...

ULINE

Senior Software Developer - Web

Waukegan, IL · On-site

$96K - $148K/yr

As a Senior Software Developer, you'll apply your full-stack expertise to create scalable, high ... NET, Java JavaScript or TypeScript. * Familiarity with SQL queries and stored procedures. * Uline ...

Uline

Senior Software Developer - Web

Waukegan, IL · On-site

$96K - $148K/yr

As a Senior Software Developer, you'll apply your full-stack expertise to create scalable, high ... NET, Java JavaScript or TypeScript. * Familiarity with SQL queries and stored procedures. * Uline ...

Pampered Chef LTD

Senior Software Engineer

Addison, IL · On-site

$125K - $135K/yr

Backend: Node.js, Java, REST APIs * Eventing: Kafka * Cloud: AWS (EC2, S3, CloudFormation, Lambda ... Strong full-stack engineering experience, with particular strength in front-end implementation and ...

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Senior Full Stack Java Developer information

See Crystal Lake, IL salary details

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How much do senior full stack java developer jobs pay per hour?

As of Aug 11, 2026, the average hourly pay for senior full stack java developer in Crystal Lake, IL is $56.32, according to ZipRecruiter salary data. Most workers in this role earn between $48.94 and $63.17 per hour, depending on experience, location, and employer.

What is a senior full stack Java developer?

Senior Full Stack Java Developers are experienced software professionals who design, develop, and maintain both the front-end and back-end components of web applications using Java and related technologies. They typically work with frameworks such as Spring Boot for the backend and may use JavaScript frameworks like Angular or React for the frontend. In addition to coding, they often lead development teams, make architectural decisions, and ensure best practices are followed throughout the software development lifecycle.

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

A Senior Full Stack Java Developer needs advanced proficiency in Java, front-end frameworks (such as Angular or React), and a solid understanding of databases, supported by a bachelor’s degree in computer science or related field. Experience with tools like Spring Boot, RESTful APIs, version control systems (e.g., Git), and cloud platforms is typically required, along with relevant certifications. Strong problem-solving, communication, and teamwork skills help developers effectively collaborate and deliver robust solutions. These competencies are crucial for building scalable applications, leading projects, and ensuring efficient development processes.

How much do senior full stack Java developers make?

Senior full stack Java developers typically earn between $100,000 and $150,000 annually, depending on experience, location, and industry. They often possess skills in frameworks like Spring and front-end technologies such as Angular or React, which can influence salary levels.

What are some common challenges senior full stack Java developers face when balancing backend and frontend responsibilities?

Senior Full Stack Java Developers often encounter the challenge of staying up-to-date with both backend Java frameworks and rapidly evolving frontend technologies. Balancing deep expertise in server-side development with proficiency in modern JavaScript frameworks (like React or Angular) can be demanding. Additionally, these professionals often need to effectively prioritize tasks between client and server development while collaborating with specialized frontend or backend team members. Time management, clear communication, and a willingness to learn new tools are essential for success in this multifaceted role.

Is a senior full stack Java developer still in demand?

Senior full stack Java developers remain in high demand due to their expertise in both front-end and back-end development, with skills in frameworks like Spring and Angular. Organizations seek these professionals for building scalable applications, especially in environments emphasizing cloud computing and microservices architecture.
What are popular job titles related to Senior Full Stack Java Developer jobs in Crystal Lake, IL? For Senior Full Stack Java Developer jobs in Crystal Lake, IL, the most frequently searched job titles are:
What cities near Crystal Lake, IL are hiring for Senior Full Stack Java Developer jobs? Cities near Crystal Lake, IL with the most Senior Full Stack Java Developer job openings:
Senior Full Stack Java Developer jobs near you
Infographic showing various Senior Full Stack Java Developer job openings in Crystal Lake, IL as of August 2026, with employment types broken down into 1% Internship, 83% Full Time, 10% Part Time, 5% Contract, and 1% Nights. Highlights an 85% Physical, 4% Hybrid, and 11% Remote job distribution, with an average salary of $117,153 per year, or $56.3 per hour.

Full-Stack Application Engineer

System One

Schaumburg, IL • Remote

$105K/yr

Contractor

Medical, Dental, Vision, Life, Retirement

Re-posted 4 days ago

Job description

Job Title: Full-Stack .NET Application Engineer Location: Schaumburg, Illinois Type: Contract To Hire Compensation: $105,000 annual Work Model: Hybrid – onsite and remote Hours: 40.0:

Responsibilities • Design, develop, and maintain full-stack applications using .NET / .NET Core, C#, RESTful APIs, and modern UI frameworks, primary focus on backend development (~60%) and significant frontend responsibilities (~40%) • Maintain and enhance existing ELD(Executive Liability Division) applications, frameworks, and shared libraries • Design and implement new features aligned with ELD(Executive Liability Division) business processes and workflows • Troubleshoot production issues and provide ongoing application support • Ensure compliance with security, performance, and architectural standards • Contribute to modernization initiatives, including framework evolution and technical debt reduction • Collaborate with cross-functional teams to define, design, and deliver high-quality solutions • Participate in code reviews, testing, CI/CD, and deployment processes

Requirements • Strong experience with .NET / .NET Core and C# • Hands-on experience with Entity Framework Core (EF Core) and ORM best practices • Proven experience designing and developing RESTful APIs and microservices architectures • Solid understanding of object-oriented programming (OOP), design patterns, and clean architecture principles • Experience with SQL Server or other relational databases, including query optimization, indexing, and stored procedures • Familiarity with authentication and authorization mechanisms (OAuth, JWT, identity frameworks) • Experience with modern JavaScript frameworks (Angular, React, Vue, etc.) • Angular strongly preferred; candidates without Angular experience must demonstrate ability to ramp quickly • Strong proficiency in: TypeScript, JavaScript (ES6+), HTML5, CSS3, responsive design principles, component-based UI architectures, familiarity with UI libraries like Angular Material or Bootstrap • Modern engineering practices including using Git, CI/CD pipelines, containerization (Docker), and cloud platforms (Azure preferred) • Exposure to or experience with AI-assisted development tools such as GitHub Copilot is a plus • Ability to work independently and within a team, with strong communication skills • Knowledge of microservices, distributed systems, event-driven architectures, and API gateways is a plus • Prior experience in insurance or underwriting systems and legacy system modernization initiatives is desirable

System One, and its subsidiaries including Joulé and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. We help clients get work done more efficiently and economically, without compromising quality. System One not only serves as a valued partner for our clients, but we offer eligible employees health and welfare benefits coverage options including medical, dental, vision, spending accounts, life insurance, voluntary plans, as well as participation in a 401(k) plan.

System One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, age, national origin, disability, family care or medical leave status, genetic information, veteran status, marital status, or any other characteristic protected by applicable federal, state, or local law.

Ref: #861-Cincinnati-S1