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Freelance Senior Software Developer Jobs in Illinois

Next Step Systems

Senior Software Developer

Chicago, IL · On-site

$56.25 - $74.25/hr

Senior Software Developer, Chicago, IL We are seeking a Senior Software Developer for a great opportunity in Chicago. Responsibilities: - Work collaboratively with technology and business teams on ...

ECS

Senior Software Developer

O Fallon, IL · On-site

$110K - $120K/yr

Everforth ECS is seeking a Senior Software Developer to work in our O'Fallon, IL office. ECS Federal LLC is looking for a Senior Software Developer who possesses and applies expertise on multiple ...

Worky

Senior Software Developer

O Fallon, IL · On-site

$110 - $120/hr

Everforth ECS is seeking a Senior Software Developer to work in our O'Fallon, IL office. ECS Federal LLC is looking for a Senior Software Developer who possesses and applies expertise on multiple ...

ULINE

Sr. Software Developer

Waukegan, IL · On-site

$123K - $131K/yr

Uline, Inc. seeks a Sr. Software Developer in Waukegan, IL to design, develop, test, deploy, support, and maintain complex web applications based on business requirements. Perform design and code ...

ULINE

Sr. Software Developer

Waukegan, IL · On-site

$123K - $131K/yr

Uline, Inc. seeks a Sr. Software Developer in Waukegan, IL to design, develop, test, deploy, support, and maintain complex web applications based on business requirements. Perform design and code ...

ULINE

Senior Software Developer

Waukegan, IL · On-site

$131K/yr

Senior Software Developer Job Duties: Uline, Inc. seeks a Senior Software Developer in Waukegan, Illinois to develop software. Craft, test, and deploy Java applications aligned with business needs ...

ULINE

Senior Software Developer

Waukegan, IL · On-site

$131K/yr

Senior Software Developer Job Duties: Uline, Inc. seeks a Senior Software Developer in Waukegan, Illinois to develop software. Craft, test, and deploy Java applications aligned with business needs ...

Landor

Freelance Senior Designer

Chicago, IL · On-site

$50/hr

Landor is looking for a Freelance Senior Designer to join our Chicago studio. Could this be you? We ... Familiarity with new media technology/software * Ability to collaborate confidently with team ...

Landor

Freelance Senior Designer

Chicago, IL · Hybrid

$50/hr

Landor is looking for a Freelance Senior Designer to join our Chicago studio. Could this be you? We ... Familiarity with new media technology/software * Ability to collaborate confidently with team ...

Landor

Freelance Senior Designer

Chicago, IL · Hybrid

$50/hr

Landor is looking for a Freelance Senior Designer to join our Chicago studio. Could this be you? We ... Familiarity with new media technology/software * Ability to collaborate confidently with team ...

ULINE

Senior Software Developer - Web

Waukegan, IL · On-site

$96K - $148K/yr

Senior Software Developer - Web Pay from $96,000 to $148,000 per year 2200 S. Lakeside Drive, Waukegan, IL 60085 Enhance and support world-class websites at Uline. As a Senior Software Developer, you ...

Uline

Senior Software Developer - Web

Waukegan, IL

$96K - $148K/yr

Senior Software Developer - Web Pay from $96,000 to $148,000 per year 2200 S. Lakeside Drive, Waukegan, IL 60085 Enhance and support world-class websites at Uline. As a Senior Software Developer, you ...

ULINE

Senior Software Developer - Web

Waukegan, IL · On-site

$96K - $148K/yr

Senior Software Developer - Web Pay from $96,000 to $148,000 per year 2200 S. Lakeside Drive, Waukegan, IL 60085 Enhance and support world-class websites at Uline. As a Senior Software Developer, you ...

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Freelance Senior Software Developer information

What does a freelance senior software developer do?

A Freelance Senior Software Developer designs, develops, and maintains complex software systems for clients or companies on a contract basis. They often work independently, managing multiple projects, collaborating with stakeholders, and ensuring the delivery of high-quality code. Their role may include mentoring junior developers, making architectural decisions, and troubleshooting technical issues. Freelancers have the flexibility to choose their clients and projects, and they are responsible for managing their own workload, deadlines, and business operations.

What are the key skills and qualifications needed to thrive as a freelance senior software developer?

To thrive as a Freelance Senior Software Developer, you need advanced programming expertise, a robust portfolio, and significant experience with full software development lifecycles. Strong command of frameworks, version control (like Git), cloud platforms, and potentially certifications such as AWS Certified Developer or Microsoft Certified: Azure Developer are highly valuable. Exceptional communication, time management, and problem-solving abilities help you effectively collaborate with clients and manage multiple projects independently. These skills ensure you deliver high-quality, timely solutions while building a strong professional reputation in a competitive freelance market.

How do freelance senior software developers typically manage client expectations and project timelines?

Freelance Senior Software Developers often juggle multiple clients and projects, which requires clear communication and proactive expectation management. They usually begin by setting detailed project scopes, timelines, and deliverables with clients, then provide regular updates and adjust schedules as needed to accommodate changes or unforeseen challenges. Strong time management skills and transparent reporting help ensure that projects stay on track and that clients remain informed and satisfied throughout the development process.

What is the difference between Freelance Senior Software Developer vs Freelance Software Engineer?

AspectFreelance Senior Software DeveloperFreelance Software Engineer
CredentialsTypically requires extensive experience, advanced coding skills, and sometimes certifications like Microsoft or AWSRequires solid coding skills and experience, often with relevant certifications but generally less senior-level expertise
Work EnvironmentWorks independently or with clients directly, often on complex projects requiring leadershipWorks independently or with teams, focusing on software development tasks across various projects
Industry UsageCommonly used in consulting, freelance platforms, and project-based work requiring senior expertiseWidely used in freelance and contract roles across tech industries for development tasks

The main difference lies in experience level and project complexity. Freelance Senior Software Developers typically handle more complex projects and provide technical leadership, while Freelance Software Engineers focus on coding and development tasks across a range of project types.

What are the most commonly searched types of Senior Software Developer jobs in Illinois?

The most popular types of Senior Software Developer jobs in Illinois are:

What cities in Illinois are hiring for Freelance Senior Software Developer jobs?

Cities in Illinois with the most Freelance Senior Software Developer job openings:

Freelance Senior Software Developer jobs near you

Senior Software Developer

Chicago, IL • On-site

Next Step Systems
IT Services • 11 - 50 employees
Learn more about Next Step Systemsexternal

$56.25 - $74.25/hr

Full-time

Medical, Retirement, PTO

Re-posted 19 days ago

Job description

Senior Software Developer, Chicago, IL
We are seeking a Senior Software Developer for a great opportunity in Chicago.
Responsibilities:
- Work collaboratively with technology and business teams on trading and research platforms.
- Design and implement high quality software solutions used for algorithmic trading, exchange connectivity, and research.
- Explore and work with industry leading hardware and software.
- Work alongside industry experts in the fields of technology and finance.
- Lead/mentor junior team members.
- Take ownership of and leading projects from start to finish including design, roll out, and testing.
- Work on challenging and dynamic problems in a team atmosphere.
Qualifications:
- 3+ years of experience in C++ Software Development.
- Bachelor's Degree in Computer Science or an equivalent field.
- Problem solvers who are driven, self-motivated, and "outside of the box" thinkers.
- Motivated, dependable, and responsible team players.
- Excellent written and spoken communication skills.
- Must be willing to take ownership and lead others.
- Solid programming skills and strong understanding of general programming concepts such as OOP and data structures.
- Financial Services or Trading industry experience is a plus.
*Looking for candidates from top tier universities with a strong GPA. PhD in mathematics, statistics, physics or engineering is preferred. Will consider candidates who have a Master's degree along with work experience. Top universities include Massachusetts Institute of Technology/MIT, Carnegie Mellon University, Princeton University, Harvard University, University of California-Berkeley, Stanford University, University of Chicago, California Institute of Technology, University of California, Los Angeles, Columbia University, New York University, University of Michigan, Ann Arbor, Yale University, Cornell University, Brown University, etc.
Benefits include medical insurance, retirement plan, PTO, etc. Salary: 80K+ DOE. Keywords: Chicago IL Jobs, Senior Software Developer, C++, Algorithmic Trading, Exchange Connectivity, Financial industry, Trading Industry, Software Engineer, Architect, Programming, Programmer Analyst, Chicago Recruiters, Information Technology Jobs, IT Jobs, Chicago Recruiting
Company Will Sponsor Visas! Company Will Relocate Candidates!
Looking to hire for similar positions in Chicago, IL or in other cities? Our IT recruiting agencies and staffing companies can help.
We help companies that are looking to hire Senior Software Developers for jobs in Chicago, Illinois and in other cities too. Please contact our IT recruiting agencies and IT staffing companies today! Phone 630-428-0600 ext 11 or email us at jobs@nextstepsystems.com. Click here to submit your resume for this job and others.
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