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Senior Full Stack Developer Jobs in Crystal Lake, IL

Feather Robotics

Full Stack Roboticist

Mundelein, IL · On-site

About the job We're looking for a Full Stack Roboticist to design and implement the control systems ... Collaborate with mechanical and AI engineers to integrate perception, planning, and control into a ...

New

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 ...

Embtel Inc

Java Web Architect

West Chicago, IL · On-site

Proficiency in RESTful APIs and API * Healthcare domain Experience preffered Dont Submit Java/J2EE Developer or Java Full Stack Developer or Java Back End Developer. But Java Full Stack with NodeJS ...

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 ... Strong full-stack engineering experience, with particular strength in front-end implementation and ...

Motorola

Senior DevOps Engineer (US REMOTE)

Schaumburg, IL · Remote

$140K - $170K/yr

... s Full-Stack Engineer with expertise in IaC (Terraform), Helm, MySQL, Kubernetes, and CI/CD ... Pipelines. You will play a key role in building, maintaining, securing and deploying scalable cloud ...

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-performing web applications. You'll provide technical leadership, mentor developers and help deliver ...

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-performing web applications. You'll provide technical leadership, mentor developers and help deliver ...

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-performing web applications. You'll provide technical leadership, mentor developers and help deliver ...

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-performing web applications. You'll provide technical leadership, mentor developers and help deliver ...

ULINE

Senior Software Developer - Java

Waukegan, IL · On-site

$96K - $148K/yr

Senior Software Developer - Java Pay from $96,000 to $148,000 per year 2200 S. Lakeside Drive ... Java full stack development, with a strong track record in enterprise solutions using Spring ...

Uline

Senior Software Developer - Java

Waukegan, IL · On-site

$96K - $148K/yr

Senior Software Developer - Java Pay from $96,000 to $148,000 per year 2200 S. Lakeside Drive ... Java full stack development, with a strong track record in enterprise solutions using Spring ...

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Senior Full Stack Developer information

See Crystal Lake, IL salary details

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

As of Sep 7, 2026, the average hourly pay for senior full stack developer in Crystal Lake, IL is $57.47, according to ZipRecruiter salary data. Most workers in this role earn between $47.79 and $66.20 per hour, depending on experience, location, and employer.

What is a senior full stack developer?

Senior Full Stack Developers are experienced professionals who design, develop, and maintain both the front-end and back-end components of web applications. They are proficient in multiple programming languages and frameworks, enabling them to handle servers, databases, APIs, and user interfaces. In addition to coding, they often lead development teams, make architectural decisions, and ensure software quality and scalability. Their expertise allows them to oversee the entire application lifecycle, from concept to deployment.

How does a senior full stack developer typically collaborate with cross-functional teams during a project lifecycle?

As a Senior Full Stack Developer, you'll frequently collaborate with designers, product managers, QA engineers, and other developers to deliver end-to-end solutions. You'll be involved in requirements discussions, offer technical guidance, and help align frontend and backend development with business goals. Your role often includes code reviews, mentoring junior team members, and ensuring seamless integration across various systems. This collaborative environment encourages knowledge sharing and innovation while ensuring project success.

What are the key skills and qualifications needed to thrive as a senior full stack developer, and why are they important?

To thrive as a Senior Full Stack Developer, you need advanced proficiency in both front-end and back-end programming languages, frameworks, and a solid understanding of software architecture, usually supported by a relevant degree and several years of experience. Mastery of tools such as Git, Docker, CI/CD systems, and cloud platforms like AWS or Azure is typically required, alongside familiarity with databases and version control systems. Strong problem-solving abilities, leadership, effective communication, and collaboration skills set exceptional developers apart. These skills and qualities are crucial for delivering robust, scalable solutions while mentoring teams and efficiently bridging gaps between client requirements and technical implementation.

What is the difference between Senior Full Stack Developer vs Backend Developer?

AspectSenior Full Stack DeveloperBackend Developer
Required SkillsProficiency in both frontend and backend technologies, such as JavaScript, HTML, CSS, and server-side languages like Node.js, Python, or JavaSpecialized in server-side development, working with languages like Java, Python, Ruby, or PHP, and database management
Work EnvironmentCollaborates across frontend and backend teams, often involved in full project lifecycleFocuses primarily on backend systems, APIs, and database integration
Common UsageUsed in roles requiring full project oversight and versatile development skillsUsed in roles focused on server-side logic, database management, and API development

The main difference is that a Senior Full Stack Developer handles both frontend and backend development, providing a comprehensive approach to projects, while a Backend Developer specializes solely in server-side logic and database management. Both roles require strong programming skills, but the Full Stack Developer's expertise spans the entire technology stack.

What are the most commonly searched types of Full Stack Developer jobs in Crystal Lake, IL?

The most popular types of Full Stack Developer jobs in Crystal Lake, IL are:

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

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

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

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

Senior Full Stack Developer jobs near you
Infographic showing various Senior Full Stack Developer job openings in Crystal Lake, IL as of August 2026, with employment types broken down into 71% Full Time, and 29% Contract. Highlights an 100% In-person job distribution, with an average salary of $119,536 per year, or $57.5 per hour.

Full-Stack Application Engineer

System One

Schaumburg, IL • Remote

$105K/yr

Contractor

Medical, Dental, Vision, Life, Retirement

Re-posted yesterday

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

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About System One

Sourced by ZipRecruiter

System One helps employers get work done more efficiently and economically without compromising quality. Over our 35+ year history, we've helped connect thousands of talented people with innovative companies. The excitement of a perfect fit motivates us every single day.

Industry

Business consulting services and recruiting and staffing services

Company size

5,001 - 10,000 Employees

Headquarters location

Pittsburgh, PA, US

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