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Freelance Senior Software Developer Jobs (NOW HIRING)

One Tech Engineering

Senior Software Developer

Appleton, WI · On-site

$53.25 - $70.25/hr

The Senior Software Developer will manage software programs and applications from start to finish, while analyzing software errors and reviewing status reports. The candidate must be a US Citizen or ...

Keystone Terra

Senior Software Developer

Mountain View, CA · Remote

$10K - $20K/yr

We are looking for a highly skilled Senior Software Developer to join our engineering team and help design, build, and maintain scalable software solutions. The ideal candidate has strong technical ...

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 ...

One Tech

Senior Software Developer

Appleton, WI · On-site

$53.25 - $70.25/hr

The Senior Software Developer will manage software programs and applications from start to finish, while analyzing software errors and reviewing status reports. The candidate must be a US Citizen or ...

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 ...

BS&A Software LLC

Senior Software Developer

Bath, MI · On-site

$49.25 - $65/hr

As a Senior Software Developer, you will play a pivotal role in designing, developing, and maintaining our municipal ERP software. Your expertise in various technologies and programming languages ...

POWERS

Senior Software Developer

Atlanta, GA · On-site

$52.50 - $69.25/hr

CULTUREWORX seeks a Senior Software Developer to join our dynamic team. This position will support our Operational and Cultural Performance Improvement lines of business, along with other subsidiary ...

Vidoori

Senior Software Developer

Hyattsville, MD · On-site

$54.75 - $72.25/hr

Role Overview - Senior Software Developer Reporting to engineering leadership, the Senior Software Developer will be a core contributor to one or more product squads or platform teams. This role ...

POWERS

Senior Software Developer

Atlanta, GA · On-site

$108K - $130K/yr

CULTUREWORX seeks a Senior Software Developer to join our dynamic team. This position will support our Operational and Cultural Performance Improvement lines of business, along with other subsidiary ...

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 ...

Vidoori

Senior Software Developer

Hyattsville, MD · On-site

$54.75 - $72.25/hr

Role Overview - Senior Software Developer Reporting to engineering leadership, the Senior Software Developer will be a core contributor to one or more product squads or platform teams. This role ...

Vidoori Inc.

Senior Software Developer

Hyattsville, MD · On-site

$100 - $130/hr

Role Overview - Senior Software Developer Reporting to engineering leadership, the Senior Software Developer will be a core contributor to one or more product squads or platform teams. This role ...

SSN Group LLC

Senior Software Developer

Reston, VA · On-site

$56.75 - $75/hr

Senior Software Developer Location: Reston, VA / Washington, DC.(Hybrid) Duration: Long-term Responsibilities: * Senior Cloud-Native Software Engineer AWS * Strong hands-on AWS cloud-native ...

Princeton IT Services

Senior Software Developer

New York, NY · Remote

$55.75 - $73.75/hr

Senior Software Developer Location: US and Canada Job Overview: We are seeking a Senior Software Developer with strong experience in Java, Spring Boot, Python APIs, and cloud technologies. The ideal ...

TrafficCast

Senior Software Developer

Philadelphia, PA · On-site

$90K - $125K/yr

Position Senior Software Engineer TCI is seeking a high-energy, experienced server side software developer with solid experience in C, Java, Python, and like languages to help drive design ...

SAS

Sr Software Developer

Cary, NC · Remote

$51 - $67.25/hr

Senior Software Developer - HIE Production Support (Healthcare Interoperability)- Remote US Government & Public Sector - Healthcare Services & Support We're a leader in data and AI. Through our ...

SAS

Sr Software Developer

Cary, NC · On-site

$51 - $67.25/hr

Senior Software Developer - HIE Production Support (Healthcare Interoperability)- Remote US Government & Public Sector - Healthcare Services & Support We're a leader in data and AI. Through our ...

ULINE

Sr. Software Developer

Pleasant Prairie, WI · On-site

$142K/yr

Uline, Inc. seeks a Sr. Software Developer in Pleasant Prairie, WI to perform software development. Design, develop, implement, support, and maintain enterprise software applications based on ...

ULINE

Sr. Software Developer

Pleasant Prairie, WI · On-site

$142K/yr

Uline, Inc. seeks a Sr. Software Developer in Pleasant Prairie, WI to perform software development. Design, develop, implement, support, and maintain enterprise software applications based on ...

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Freelance Senior Software Developer information

See salary details

$15

$61

$87

How much do freelance senior software developer jobs pay per hour?

As of Aug 28, 2026, the average hourly pay for freelance senior software developer in the United States is $61.73, according to ZipRecruiter salary data. Most workers in this role earn between $52.40 and $69.23 per hour, depending on experience, location, and employer.

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 cities are hiring for Freelance Senior Software Developer jobs?

Cities with the most Freelance Senior Software Developer job openings:

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

The most popular types of Senior Software Developer jobs are:

What states have the most Freelance Senior Software Developer jobs?

States with the most job openings for Freelance Senior Software Developer jobs include:

Freelance Senior Software Developer jobs near you

Senior Software Developer

Appleton, WI • On-site

One Tech Engineering
11 - 50 employees
Learn more about One Tech Engineeringexternal

$53.25 - $70.25/hr

Full-time

Posted 15 days ago

Job description

One Tech Engineering is searching for a Senior Software Developer for a position located in Appleton, Wisconsin. The Senior Software Developer will manage software programs and applications from start to finish, while analyzing software errors and reviewing status reports.

The candidate must be a US Citizen or a green card holder, the position is not eligible for sponsorship. The candidate should have a Bachelor’s Degree in Computer Science, Management Information Systems (MIS), Information Technology, or related field and 8 years of relevant experience.

Local candidates preferred or open to relocation. This is not a remote position.

Senior Software Developer Responsibilities:

  • Review and apply industry best practices and techniques to design, develop, test, deploy, support, and maintain complex applications based on business requirements.
  • Manage new software programs by using approved technologies and coding standards.
  • Manage user needs to recommend and implement software improvements and testing.
  • Review programming scripts to enhance functionality of software development life cycle for assigned projects.
  • Lead research on emerging application development software projects in support of procurement and development efforts.
  • Partner with development team to ensure consistency and completion of deliverables among team members.
  • Lead problem solving and apply processes to software solutions.
  • Lead the design and customization of software for client use with the aim of optimizing operational efficiency.
  • Ensure all software process documentation and validation testing are completed to minimize error.
  • Exhibit leadership in cross functional development practices and application ownership.
  • Provide leadership, guidance, and instruction to less experienced staff.
  • Responsible for QA/QC process adherence.
  • Responsible for compliance with company and site safety policies.
  • Performs other duties as assigned.
  • Complies with all policies and standards.

Requirements of the Senior Software Developer:

  • Bachelor’s Degree in Computer Science, Management Information Systems (MIS), Information Technology, or related field and 8 years of relevant experience.
  • Or an Associate’s Degree in in Computer Science, Management Information Systems (MIS), Information Technology, or related field and 10 years of relevant experience.
  • Or a High School degree and 12 years of relevant experience.
  • Expert knowledge of full cycle developer methodologies.
  • Expert knowledge of relational or NoSQL databases (SQL Server is highly preferred) and creating SQL statements.
  • Expert proficiency with HTML, CSS, and web fonts.
  • Expert technical expertise in computer equipment, storage, back-ups, operating systems and tools used in an operating environment required.
  • Strong attention to detail, facilitation, team building, collaboration, organization, and problem-solving skills.
  • Excellent verbal and written communication skills.
  • Ability to work methodically and analytically in a quantitative problem-solving environment.
  • Excellent critical thinking skills.
  • Expert in Microsoft Office Suite (Word, Excel, and PPT).
  • Ability to obtain applicable certifications.