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Freelance Senior Software Developer Jobs in Minnesota

Leidos is seeking Senior Software Developers to join the Air Traffic Business Area within the Homeland Sector, supporting the development of next-generation flight service and air traffic systems.

As a Senior Software Developer on the multi-disciplinary Distribution Management System development team, you will be leading the design and development of the advanced applications that our ...

Senior Software Engineer

Minneapolis, MN · On-site +1

$130K - $150K/yr

Our client is seeking a Senior Software Engineer to join their product engineering team and play a key role in modernizing their platform architecture. This position is ideal for a highly skilled ...

Senior Software Engineer

Minneapolis, MN · On-site

$127K - $168K/yr

We are seeking a Senior Software Engineer to join the Material Processing Systems Group in the ... Experience with Application Lifecycle Management (ALM) tools such as Microsoft Azure DevOps and Git.

Senior Software Developer

Minneapolis, MN

$57 - $75.25/hr

We are looking for full-stack engineers who can help us reach our mission of changing the way retailers take payments. We will be building products for consumers and retailers in the payments space.

Senior Software Developer

Minneapolis, MN · On-site

$57 - $75.25/hr

We are looking for full-stack engineers who can help us reach our mission of changing the way retailers take payments. We will be building products for consumers and retailers in the payments space.

Senior Software Developer C#

Oslo, MN

$55.50 - $73.50/hr

Master's degree in Computer Science, Software Engineering, or a closely related STEM discipline ... from the Senior Software Principal - Advisor Halliburton is an Equal Opportunity Employer.

Senior Software Engineer

Maple Grove, MN

$125K - $165K/yr

Nextern is seeking a Senior Software Engineer to join our product realization team. At Nextern, we develop innovative medical technologies and connected solutions that improve patient outcomes and ...

Senior Software Engineer

Maple Grove, MN · On-site

$125K - $165K/yr

Nextern is seeking a Senior Software Engineer to join our product realization team. At Nextern, we develop innovative medical technologies and connected solutions that improve patient outcomes and ...

Senior Software Engineer

Maple Grove, MN · On-site

$125K - $165K/yr

Nextern is seeking a Senior Software Engineer to join our product realization team. At Nextern, we develop innovative medical technologies and connected solutions that improve patient outcomes and ...

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Showing results 1-20

Freelance Senior Software Developer information

What are the key skills and qualifications needed to thrive as a Freelance Senior Software Developer, and why are they important?

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 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 most commonly searched types of Senior Software Developer jobs in Minnesota? The most popular types of Senior Software Developer jobs in Minnesota are:
Senior Software Developer

$80K - $90K/yr

Full-time

Medical, Dental, Vision, Retirement, PTO

Posted 9 days ago


Job description

Collabetive Services, LLC is looking for a Senior Software Developer to design, develop, test, document, and support business-critical software, database processes, APIs, and cloud-hosted systems used by Adam’s Pest Control, Collabetive Services, and Blu Star clients.

As our Senior Software Developer, you’ll play a lead role in database design and critical system integrations. You’ll collaborate closely with our CTO and Lead Developers to master existing systems, document institutional knowledge, and elevate our standards to build fast, repeatable data conversion processes.

Position Type: Full-Time · Salary · Exempt

Work Location: Medina, MN This role is required to work one day a week in office.

Reports to: President

Company Description:

Collabetive Services, LLC helps pest control businesses improve performance and achieve results. We offer proven best practices, real-world advice, and a network of experienced business consultants in management, process improvement, entomology, and marketing; each with extensive experience in pest control. You will also find tools and services to improve efficiency that will save you time and money.

The Collabetive is owned by Adam’s Pest Control, Inc. which has over 100 employees. This also extends Adam’s benefits to Collabetive employees.

What You’ll Do:

  • 50% Database / Conversion / Data Architecture: Own the client data migration lifecycle. Build the automated scripts, ETL logic, tooling, and validation reports required to turn a painful manual conversion process into a repeatable science.
  • 25% Back-End & API Development: Design, build, and support secure, high-performing APIs and web services linking our core platform to mobile applications and third-party systems.
  • 15% Azure Cloud / DevOps / Support: Help manage and optimize our Azure-hosted applications and SQL databases to reduce downtime and improve reliability.
  • 10% Transition & Mentorship: Work hand-in-hand with our departing Lead Developer to capture undocumented system logic, establish database naming standards, and create robust documentation.


Requirements:

  • A Bachelor’s degree or higher in computer science, information systems, software development, data management, or equivalent practical experience.
  • Minimum 5–8 years of professional software development, database development, or systems integration experience.
  • Deep proficiency in Microsoft SQL Server, advanced T-SQL, stored procedures, indexing, and query tuning.
  • Proven experience in mapping, cleansing, and reconciling messy data from third-party legacy systems.
  • A practical, problem-solving mindset and the willingness to read and respect existing legacy codebases while actively finding ways to modernize and automate them.
  • Ability to pass a pre-employment drug screen and criminal background check

Preferred Skills:

  • Azure SQL / Azure App Services / Azure infrastructure familiarity
  • ETL tooling or scripting experience
  • SSIS, PowerShell, React, Python, C#, .NET, or similar
  • Experience with CRM, ERP, accounting, field service, logistics, billing, or service routes
  • Reporting or analytics experience
  • Experience working with outside vendors and technical support teams


Nice to Have Skills:

  • Visual Basic / ASP.NET legacy experience
  • Telerik familiarity
  • Mobile/backend integration experience
  • QuickBooks or accounting system data familiarity
  • Security, logging, monitoring, and deployment automation experience
  • AI-assisted coding experience (Claude, GitHub Copilot, etc.)

Benefits:

  • Health, Dental, Vision, plus additional insurance options
  • Health Savings Accounts (HSA) and Flexible Spending Accounts (FSA)
  • Paid Time Off (PTO), Paid Holidays, & Sick Leave
  • PTO Carryover
  • 401K + Company Match

Recruitment Process:

Selected candidates will move to phone interviews starting [DATE], with in-person interviews beginning on 7/13.

Collabetive Services, LLC. is an AA/EEOC Employer