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Freelance Java Back End Developer Jobs in Mundelein, IL

Jobsbridge

Senior Java (Back-End) Developer

Chicago, IL

$124.10K - $161.20K/yr

Qualifications: 8+ years of experience building java / golang backend applications. Bachelor of ... Rock-solid programming skills. Experience with MongoDB. Experience with JSON, and RESTful web ...

Purplejack Technologies LLC

Senior Java Developer

Chicago, IL · Hybrid

$59 - $75.25/hr

Senior Java Backend Developer - Hybrid (Chicago, IL / Peoria, IL) Duration: 12 Months Contract Location: Hybrid - Chicago, IL or Peoria, IL (2-3 days onsite/week) We are seeking a Senior Java Backend ...

Spruce Infotech

Java Backend Developer

Chicago, IL · On-site

$52 - $67.50/hr

We are looking for an experienced Backend Developer with strong expertise in API development using Spring Boot on the Azure platform. The ideal candidate should have hands-on experience designing ...

PATTERNS

Urgent Hiring - Java Backend Developer

Chicago, IL · On-site

$35 - $45/hr

Local Only As a Backend Developer, you will play a key role in designing, developing, and deploying ... Python, Java, C#, JavaScript, or SQL. Preferred Qualifications • Strong written and verbal ...

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 ...

Programmers.io

Senior Java Developer

Chicago, IL · On-site

$59 - $75.25/hr

... Programming with Java 1.8, JUnit/Mockito, Spring Boot, MicroServices design, Maven, Tomcat ... Java back-end development and skills with Spring-boot framework. Real life experience with ...

SYSTEGRATION INC

Be Seen First

Sr. Backend Java Developer

Chicago, IL · On-site

$124.10K - $161.20K/yr

We are helping our Direct Client (Fortune 100 company) to look for Top Notch/Expert Sr. Backend Java Developer for 100% Onsite Multi-Year Contract role in Chicago Downtown, Immediate Start! Client ...

SYSTEGRATION INC

Be Seen First

Sr. Backend Java Developer

Chicago, IL · On-site

$124.10K - $161.20K/yr

We are helping our Direct Client (Fortune 100 company) to look for Top Notch/Expert Sr. Backend Java Developer for 100% Onsite Multi-Year Contract role in Chicago Downtown, Immediate Start! Client ...

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Freelance Java Back End Developer information

See Mundelein, IL salary details

$10

$55

$74

How much do freelance java back end developer jobs pay per hour?

As of May 30, 2026, the average hourly pay for freelance java back end developer in Mundelein, IL is $55.77, according to ZipRecruiter salary data. Most workers in this role earn between $49.57 and $64.28 per hour, depending on experience, location, and employer.

What are the key skills and qualifications needed to thrive as a Freelance Java Back End Developer, and why are they important?

To thrive as a Freelance Java Back End Developer, you need strong proficiency in Java, object-oriented programming, RESTful API design, and experience with frameworks like Spring or Hibernate, typically supported by a relevant degree or proven project portfolio. Familiarity with version control systems (such as Git), build tools (like Maven or Gradle), cloud platforms, and continuous integration/continuous deployment (CI/CD) pipelines is highly valued. Outstanding problem-solving abilities, self-motivation, and effective client communication set top freelancers apart. These skills ensure you can deliver robust, maintainable solutions independently and build lasting client relationships.

What are some common challenges faced by Freelance Java Back End Developers when working with multiple clients simultaneously?

Freelance Java Back End Developers often juggle several projects at once, which can present challenges in time management, prioritizing tasks, and aligning with different client expectations. Each client may use distinct tech stacks, communication tools, and development processes, requiring adaptability and strong organizational skills. Clear communication, setting realistic deadlines, and using project management tools can help freelancers maintain quality and meet deliverables across diverse projects.

What does a Freelance Java Back End Developer do?

A Freelance Java Back End Developer is a software professional who specializes in building and maintaining the server-side logic of web applications using the Java programming language. They work independently on a contract basis for various clients, handling tasks such as developing APIs, managing databases, and ensuring the performance and security of the application’s back end. Their responsibilities often include collaborating with front-end developers, integrating third-party services, and troubleshooting server-side issues. Freelancers in this role can work remotely or onsite, offering flexibility to both clients and developers.

What is the difference between Freelance Java Back End Developer vs Freelance Java Software Engineer?

AspectFreelance Java Back End DeveloperFreelance Java Software Engineer
CredentialsJava certifications, experience in backend frameworksJava certifications, broader software development skills
Work EnvironmentRemote, project-based, client-specificRemote or on-site, project or product-focused
Industry UsagePrimarily in backend development projectsInvolved in full software development lifecycle
Search & Comparison IntentFocus on backend Java skillsBroader software development expertise

While both roles involve Java skills, a Freelance Java Back End Developer specializes in server-side development, focusing on backend systems. A Freelance Java Software Engineer may have a broader scope, including full-stack or application development, often requiring additional skills beyond backend work.

What are popular job titles related to Freelance Java Back End Developer jobs in Mundelein, IL? For Freelance Java Back End Developer jobs in Mundelein, IL, the most frequently searched job titles are:
What job categories do people searching Freelance Java Back End Developer jobs in Mundelein, IL look for? The top searched job categories for Freelance Java Back End Developer jobs in Mundelein, IL are:
Freelance Java Back End Developer jobs near you
Java Backend Developer with Azure ___ Chicago, IL (Onsite) __ Contract

Java Backend Developer with Azure ___ Chicago, IL (Onsite) __ Contract

Acestack

Chicago, IL • On-site

$52 - $67.50/hr

Contractor

Posted 3 days ago

Job description

Job Title: Java Backend Developer with Azure

Location: Chicago, IL – 100% Onsite
Job Type: Contract (W2 / C2C)
Duration: 6–12 Months (Possible Extension)

Job Description:

We are looking for a highly skilled Java Backend Developer with strong expertise in Azure cloud services to join our team for an onsite role in Chicago, IL. The ideal candidate will design, develop, and maintain scalable backend services and APIs while leveraging Azure for deployment and cloud-native solutions.

Key Responsibilities:

  • Design, develop, and maintain backend services using Java (Spring Boot).
  • Build RESTful APIs and integrate with external/internal systems.
  • Work on cloud-native application development using Microsoft Azure.
  • Utilize Azure services like App Services, Azure Functions, Azure DevOps, Azure Storage, etc.
  • Collaborate with front-end developers, architects, and DevOps teams.
  • Participate in code reviews, unit testing, and performance tuning.
  • Follow Agile development practices and participate in sprint ceremonies.

Must-Have Skills:

  • 8-10+ Years of Java/J2EE Development experience
  • 5+ years of experience in Azure Cloud Environment.
  • Hands-on experience with Spring Boot, REST APIs, Microservices architecture.
  • Strong experience with Azure cloud platform and services (App Services, Azure DevOps, Functions, Key Vault, etc.).
  • Proficiency in SQL/NoSQL databases like MySQL, PostgreSQL, or Cosmos DB.
  • Experience with CI/CD pipelines and version control tools (Git, GitHub, Azure DevOps).
  • Strong debugging, problem-solving, and performance tuning skills.

Nice-to-Have Skills:

  • Familiarity with containerization tools like Docker and Kubernetes (AKS).
  • Experience with message queues (Kafka, RabbitMQ, Azure Service Bus).
  • Knowledge of security best practices in cloud development.

Soft Skills:

  • Excellent communication and interpersonal skills.
  • Ability to work independently in a fast-paced environment.
  • Strong analytical thinking and team collaboration mindset.
AceStack logo

About AceStack

Sourced by ZipRecruiter

AceStack is a global IT consulting & Staffing agency. We deal in Health care (Nursing, Allied, Clinical/Non-clinical) Staffing, Engineering Staffing & I.T. Staffing. Founded in 2017 in New Jersey, AceStack has reported consistent growth and profit every year and carries zero debt. AceStack consultants are placed across USA, Canada, Mexico, and Asia. In addition to our headquarters in New Jersey – USA, we also have offices in Canada, Noida, and Ahmedabad. AceStack’s exceptionally high-touch service keeps our clients satisfied and our Consultants/Travelers engaged. We believe in investing in our Consultants/Clients in a variety of ways. We employ AceStack ambassador who helps guide Consultants through the on-boarding process and ensure the transition into their new role with our Client is seamless. We also have dedicated Consultant care representatives located throughout our organization who provide the same level of attention throughout our Consultant’s tenure. Due to this level of attention and care, AceStack enjoys not only one of the highest retention rates in the staffing industry but also one of the highest redeployment rates in the industry.

Company size

51 - 200 Employees

Headquarters location

NJ, US

Year founded

2017

Social media

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