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Freelance Java Backend Developer Jobs in Mundelein, IL

OVS Technologies Inc

Java Lead Engineer

Chicago, IL · On-site

The ideal candidate will have strong backend development expertise, cloud experience with AWS, and ... Experience with DevOps practices and CI/CD pipelines. Knowledge of designing high-availability ...

Addison Group

Lead Java Developer

Addison, IL

Design and architect scalable solutions for our public- and consultant facing web sites, back-end ... Mentors other developers on the team or across other teams. Self motivated and directed, with the ...

Photon

Android Developer

Deerfield, IL · On-site

$56.75 - $74.50/hr

Evaluate compatibility of applications with existing APIs, backend systems, and mobile device ... Strong proficiency in Kotlin and/or Java. * Experience with Android SDK, Android Studio, and ...

Altruist

Staff Back End Engineer, Trading

Chicago, IL · On-site +1

... Back End Engineers to join our growing Trading team. This role will be remote for candidates ... speed on modern tech stacks (Java, Spring Boot, Microservices, AWS, Postgres, Kubernetes)

Addison Group

Lead Java Developer

Addison, IL · On-site

Design and architect scalable solutions for our public- and consultant facing web sites, back-end ... Mentors other developers on the team or across other teams. Self motivated and directed, with the ...

3B Staffing LLC

Full Stack Java Developer

Chicago, IL · Hybrid

$54 - $69.75/hr

Full Stack Developer- 50% middle tier, 30% backend, 20% front end * Need at least Java 17 or higher * Harness is the pipeline from a CI/CD setup Preferred: • Solace would be preferred for event ...

Posted today

3B Staffing LLC

Full Stack Java Developer

Chicago, IL · Hybrid

$54 - $69.75/hr

Full Stack Developer- 50% middle tier, 30% backend, 20% front end * Need at least Java 17 or higher * Harness is the pipeline from a CI/CD setup Preferred: • Solace would be preferred for event ...

Posted today

Staffingine LLC

Senior Java Full stack Developer

Chicago, IL · On-site

$59 - $75.25/hr

Implement back-end services and RESTful APIs using Java (Spring Boot), Spring Data, and Maven ... Expertise in software engineering practices, specifically in enabling incremental and agile ...

Grindr

Staff Software Engineer, Backend

Chicago, IL · On-site

$152K - $203K/yr

You'll join a backend team of 10+ engineers working on key features that support millions of active ... Experience with the JVM and at least one JVM language such as Java, Kotlin, and Scala. Experience ...

FIS

Senior Backend Engineer

Chicago, IL

$97K - $195K/yr

Work with technologies such as Java, Javascript and Typescript, RESTful API integrations ... A degree in Computer Science, Software Engineering, or a related field is preferred. * Strong ...

Next Generation, Inc.

Senior Java Web Developer

Chicago, IL · On-site +1

$115K - $135K/yr

Senior Java Web Developer Job Summary: We are a seeking a highly skilled Senior Java Web Developer ... Writing backend as well as frontend code for web-based applications * Resolving defects in a timely ...

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How much do freelance java backend developer jobs pay per hour?

As of Aug 12, 2026, the average hourly pay for freelance java backend 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 cities near Mundelein, IL are hiring for Freelance Java Backend Developer jobs? Cities near Mundelein, IL with the most Freelance Java Backend Developer job openings:
Freelance Java Backend Developer jobs near you

Senior Backend Java Engineer (Chicago Hybrid)

Motorola Solutions, Inc.

Chicago, IL • On-site

$130K - $150K/yr

Full-time

Medical, Dental, Vision, Retirement, PTO

Re-posted 20 days ago

Motorola Solutions rating

8.7

Company rating: 8.7 out of 10

Based on 40 frontline employees who took The Breakroom Quiz

19th of 157 rated electronics manufacturers

Job description

Company Overview
At Motorola Solutions, we believe that everything starts with our people. We're a global close-knit community, united by the relentless pursuit to help keep people safer everywhere. We build and connect technologies to help protect people, property and places. Our solutions foster the collaboration that's critical for safer communities, safer schools, safer hospitals, safer businesses, and ultimately, safer nations. Connect with a career that matters, and help us build a safer future.
Department Overview
Join our dynamic, agile R&D team as a Senior Backend Java Engineer, where you will serve as a key architectural driver for our Device Provisioning and Management platform, deployed on Google Cloud Platform (GCP).
You will be responsible for the end-to-end success of major features-from proposing architectural approaches for large-scale device configurations to defining service contracts for AI-driven automation. In this role, you will serve as a Technical Lead, actively mentoring junior developers, elevating engineering standards, and pioneering the use of advanced LLMs to optimize device lifecycles.
Job Description
Responsibilities
  • Architectural Ownership: Propose and facilitate technical discussions to arrive at agreed-upon architectural plans for high-throughput device provisioning, zero-touch enrollment, and lifecycle management services.
  • Contract Definition & Coordination: Own the APIs for the Device Management Domain, coordinating with external hardware and consumer teams to ensure seamless integration, rapid registration, and data integrity.
  • Feature Grooming & Delegation: Groom technical stories from Product Management requirements and break down complex tasks for the team to enable rapid, parallel development.
  • Database & Storage Leadership: Lead the implementation, optimization, and scaling of relational data layers using AlloyDB (and PostgreSQL), ensuring data integrity, high availability, and efficient indexing for millions of device records.
  • Advanced AI Engineering: Architect and implement advanced prompt engineering workflows utilizing Anthropic Claude to automate configuration generation, analyze complex device logs, and power conversational provisioning assistants.
  • Quality, Review & Mentorship: Conduct thorough code reviews, serving as a trusted source to catch edge cases, security gaps, and performance bottlenecks, while actively mentoring junior and mid-level engineers.
  • Pipeline & Tooling Transformation: Actively contribute to development pipeline improvements (e.g., automated guardrails, RAG systems, and AI coding assistants) to significantly cut down PR cycle times.

Requirements
  • Experience & Impact: Bachelor's degree plus 5+ years of progressive technical experience, demonstrating successful ownership of complex, distributed features and a track record of mentoring technical peers.
  • Database Mastery: Practical, deep experience managing and optimizing Postgres-based databases (ideally GCP AlloyDB) for high-concurrency write/read profiles.
  • GCP Proficiency: Proven ability to deploy, manage, and scale microservices on GCP (GKE, Cloud Run, Cloud Storage, and database management).
  • API/Contract Ownership: Extensive experience designing robust service contracts and managing dependencies between Python and Java microservices.
  • Claude & Prompt Engineering: Practical experience leveraging Anthropic Claude (or similar advanced LLMs) for systemic prompt design, structured data extraction, and log parsing.
  • System Integrity: Deep understanding of scale challenges, fault-tolerant design, and the ability to anticipate and address stress points within high-availability provisioning architectures.

Target Base Salary Range: $130,000 USD - $150,000 USD
Consistent with Motorola Solutions values and applicable law, we provide the following information to promote pay transparency and equity. Pay within this range varies and depends on job-related knowledge, skills, and experience. The actual offer will be based on the individual candidate.
Note: Candidate must be in the Chicago office 2 days per week.
#LI-MP2
#LI-HYBRD
Basic Requirements
  • Bachelors Degree with 5+ engineering experience
  • AND 4+ years of Java experience
  • Must be a U.S. citizen with the ability to obtain necessary security clearance as required by government contract.

Travel Requirements
None
Relocation Provided
None
Position Type
Experienced
Referral Payment Plan
No
Our U.S. Benefits include:
  • Incentive Bonus Plans
  • Medical, Dental, Vision benefits
  • 401K with Company Match
  • 10 Paid Holidays
  • Generous Paid Time Off Packages
  • Employee Stock Purchase Plan
  • Paid Parental & Family Leave
  • and more!

EEO Statement
Motorola Solutions is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion or belief, sex, sexual orientation, gender identity, national origin, disability, veteran status or any other legally-protected characteristic.
We are proud of our people-first and community-focused culture, empowering every Motorolan to be their most authentic self and to do their best work to deliver on the promise of a safer world. If you'd like to join our team but feel that you don't quite meet all of the preferred skills, we'd still love to hear why you think you'd be a great addition to our team.
We're committed to providing an inclusive and accessible recruiting experience for candidates with disabilities, or other physical or mental health conditions. To request an accommodation, please complete this Reasonable Accommodations Form so we can assist you.

What Motorola Solutions employees say

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About Motorola Solutions

Sourced by ZipRecruiter

At Motorola Solutions, we believe that everything starts with safety. It's the constant that empowers people to confidently move forward. It can fill a flight or sell out a stadium. It can care for a patient or graduate a class. As a global leader in public safety and enterprise security, we create and connect the technologies that help to keep people safe where they live, learn, work and play. Our integrated technology ecosystem unifies critical communications, video security and access control, and command center software, enabling collaboration in more powerful ways. At Motorola Solutions, we're ushering in a new era in public safety and security. Bring your passion, potential and talents to a career that matters.

Industry

Technology, communication and media

Company size

10,000+ Employees

Headquarters location

Chicago, IL, US

Year founded

1928

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