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Freelance Senior Software Engineer Jobs in Wisconsin

Dim3 - Clinical Nutrition

WI · On-site

$120 - $180/hr

As Senior Software Engineer, you can have a tangible impact in helping medical practitioners translate their needs into smart software. Scope Starting from use cases designed with end-users and the ...

GE Healthcare

Senior Software Engineer

Waukesha, WI · On-site

$122K - $161K/yr

Summary As a Senior Software Engineer, you will own the design, development, and delivery of next-generation compute solutions for Magnetic Resonance Imaging (MRI) scanners. Working across global ...

GE HealthCare

Senior Software Engineer

Waukesha, WI · On-site

$122K - $161K/yr

Summary As a Senior Software Engineer, you will own the design, development, and delivery of next-generation compute solutions for Magnetic Resonance Imaging (MRI) scanners. Working across global ...

Gehc

Senior Software Engineer

Waukesha, WI

$122K - $161K/yr

Summary As a Senior Software Engineer, you will own the design, development, and delivery of nextgeneration compute solutions for Magnetic Resonance Imaging (MRI) scanners. Working across global ...

Standard Process

WI · On-site

$120 - $160/hr

  • Medical

  • Life

  • Retirement

  • PTO

The OpportunityUnder the direction of the Manager, Software Engineering, the Senior Software Engineer supports the architecture, development, integration, and ongoing reliability of enterprise ...

New

Koch Industries

Senior Software Engineer

Green Bay, WI · On-site

$119K - $157K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

As a Senior Software Engineer, you will design and deliver scalable software solutions that support our transportation and logistics platforms. This AI-native product engineering role requires strong ...

Direct Supply

Senior Software Engineer

Milwaukee, WI · On-site

$120K - $158K/yr

In the Senior Software Engineer position, you'll lead the development of intelligent, adaptive, and scalable applications by leveraging AI-powered development tools and machine learning models. You ...

GE HealthCare

Sr. Software Engineer

Waukesha, WI · On-site

$122K - $161K/yr

GE HealthCare is shaping the next generation of MR scanner technology, seeking a Senior Software Engineer. This role involves designing, developing, and testing software components in a collaborative ...

Soteria Reinsurance Ltd.

WI · On-site

$110 - $150/hr

## Senior Software Engineer/DeveloperApplylocations: Westlake, TXtime type: Full timeposted on: Posted Todaytime left to apply: End Date: September 8, 2026 (30+ days left to apply)job requisition id ...

New

Leinenkugel's

Sr. Software Engineer - Salesfore

Milwaukee, WI · Hybrid

$120K - $159K/yr

  • Medical

  • Dental

  • Vision

  • Retirement

  • PTO

In the role of Sr. Software Engineer - Salesforce working in Milwaukee, WI you will be part of the Information Technology team reporting to the Senior Manager, Software Engineering. This role is a ...

One Tech Engineering

Senior Software Developer

Appleton, WI

$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 ...

Molson Coors

Sr. Software Engineer - Salesfore

Milwaukee, WI · On-site

$120K - $159K/yr

  • Medical

  • Dental

  • Vision

  • Retirement

  • PTO

In the role of Sr. Software Engineer - Salesforce working in Milwaukee, WI you will be part of the Information Technology team reporting to the Senior Manager, Software Engineering. This role is a ...

Molson Coors

Sr. Software Engineer - Salesfore

Milwaukee, WI · Hybrid

$120K - $159K/yr

  • Medical

  • Dental

  • Vision

  • Retirement

  • PTO

In the role of Sr. Software Engineer - Salesforce working in Milwaukee, WI you will be part of the Information Technology team reporting to the Senior Manager, Software Engineering. This role is a ...

Akamai Technologies, Inc.

Senior Software Engineer

Madison, WI · On-site

$121.40 - $218.60/hr

  • Medical

  • Life

  • Retirement

  • PTO

Partner with the best As a Senior Software Engineer, you will manage the Akamai cloud storage solution, NetStorage, within the public sector and work closely with various groups to support and ...

New

Molson Coors

Sr. Software Engineer - Salesfore

Milwaukee, WI · Hybrid

$120K - $159K/yr

  • Medical

  • Dental

  • Vision

  • Retirement

  • PTO

In the role of Sr. Software Engineer - Salesforce working in Milwaukee, WI you will be part of the Information Technology team reporting to the Senior Manager, Software Engineering. This role is a ...

UnitedHealth Group

Senior Software Engineer

Wausau, WI · On-site

$131K - $173K/yr

  • Retirement

Position Summary We are seeking a Sr. Software Engineer to join our OPTUM UMR clinical technology team as an ETL Developer. In this role, you will play a critical part in the end-to-end (E2E ...

Direct Supply

Senior Software Engineer

Milwaukee, WI · On-site

$120K - $159K/yr

In the Senior Software Engineer position, you'll lead the development of intelligent, adaptive, and scalable applications by leveraging AI-powered development tools, machine learning models, and ...

Crane Venture Partners

WI · On-site

$100 - $140/hr

  • Medical

  • PTO

As a Senior Software Engineer at PQShield, you will be designing and developing secure solutions, helping to develop software solutions working seamlessly through the entire software development life ...

UnitedHealth Group

Senior Software Engineer

Wausau, WI · Remote

$131K - $173K/yr

  • Retirement

Position Summary We are seeking a Sr. Software Engineer to join our OPTUM UMR clinical technology team as an ETL Developer. In this role, you will play a critical part in the end-to-end (E2E ...

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All JobsSoftware Engineer JobsFreelance Senior Software Engineer JobsFreelance Senior Software Engineer Jobs in Wisconsin

Freelance Senior Software Engineer information

What is a freelance senior software engineer?

Freelance Senior Software Engineers are highly experienced software professionals who work independently rather than as full-time employees of a single company. They take on contract-based projects for various clients, often leading development teams, architecting systems, and solving complex technical problems. Their responsibilities typically include coding, reviewing code, mentoring junior engineers, and ensuring that software solutions meet client requirements. Freelance senior engineers offer flexibility and specialized expertise, making them a valuable asset for businesses needing advanced software solutions without long-term commitments.

What are some common challenges faced by freelance senior software engineers when managing multiple client projects simultaneously?

Freelance Senior Software Engineers often juggle multiple projects for different clients, which can present challenges such as balancing competing deadlines, adapting to varying coding standards, and maintaining clear communication across diverse teams. Time management and setting realistic expectations are crucial to ensure high-quality deliverables. Additionally, staying up to date with new technologies and industry best practices helps maintain a competitive edge and satisfy client requirements.

What are the key skills and qualifications needed to thrive as a freelance senior software engineer, and why are they important?

To thrive as a Freelance Senior Software Engineer, you need advanced programming expertise, strong problem-solving skills, and a proven track record in software development, often backed by a relevant degree and years of experience. Familiarity with version control systems like Git, cloud platforms such as AWS or Azure, and mastery of frameworks and languages (e.g., JavaScript, Python, Java) are crucial, along with certifications like AWS Certified Solutions Architect or Microsoft Certified: Azure Developer Associate. Outstanding communication, time management, and self-motivation are vital soft skills for independently managing projects and collaborating with diverse clients. These competencies ensure you can deliver high-quality, scalable solutions while building strong client relationships and managing multiple projects efficiently.

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

AspectFreelance Senior Software EngineerFreelance Software Developer
Experience LevelTypically 5+ years, with leadership and architecture skillsVaries from entry-level to mid-level, focused on coding and implementation
ResponsibilitiesDesigning systems, leading projects, mentoringWriting code, developing features, fixing bugs
CredentialsStrong portfolio, possibly certifications like AWS, ScrumPortfolio, coding skills, possibly certifications
Work EnvironmentRemote or client-site, often in tech companies or startupsRemote or client-site, in various industries

Freelance Senior Software Engineers typically have more experience, leadership responsibilities, and focus on system design, while Freelance Software Developers concentrate on coding and feature development. Both roles are in high demand in the freelance market, but the senior role often commands higher rates due to expertise and project scope.

What are popular job titles related to Freelance Senior Software Engineer jobs in Wisconsin?

For Freelance Senior Software Engineer jobs in Wisconsin, the most frequently searched job titles are:

What job categories do people searching Freelance Senior Software Engineer jobs in Wisconsin look for?

The top searched job categories for Freelance Senior Software Engineer jobs in Wisconsin are:

Freelance Senior Software Engineer jobs near you

Senior Software Engineer

Dim3 - Clinical Nutrition

WI • On-site

$120 - $180/hr

Other

Posted 14 days ago

Job description

As Senior Software Engineer, you can have a tangible impact in helping medical practitioners translate their needs into smart software.

Scope

Starting from use cases designed with end-users and the Product Manager, you will be building easy to use, high-performing, distributed, scalable, enterprise-grade applications in a Java environment. You'll be part and bring your experience in the full software development lifecycle, from design and coding to testing and documentation, in an agile way.

Mission
  • Analyze and review use cases and user stories
  • Build technical architectures and designs
  • Deliver stable, testable, secure, reusable, extensible, maintainable and efficient code and frameworks
  • Create or maintain technical documentation
  • Participate in code reviews with your peers
  • Proactively support project deployments remotely and at customer sites
  • Support continuous improvement by investigating alternative technologies and processes and presenting these for review by the team
Profile
  • Engineering or Master’s degree in Computer Science with a minimum experience of 10 years
  • Full-stack developer with excellent analytical skills
  • Excellent coding skills in Java and extensive experience with Spring Boot
  • Practical knowledge of relational database modelling and query optimization
  • Ability to set up and maintain build configurations (Maven or Gradle) and continuous integration pipelines
  • Experience with domain-driven design, event sourcing and CQRS architectures is a huge asset
  • Special affinity for UX is an asset
  • Working experience with container technologies (Docker, Kubernetes, Helm...) and with event-driven, distributed applications and lightweight message buses (RabbitMQ, Kafka, ...) is an asset
  • Excellent time-organization skills and ability to work under tight deadlines
  • Team player, curious and quick learner, communicative and convincing
  • Fluent in French and English
Offer
  • Work in a motivated, lively start-up environment and contribute to making better medical decisions that enhance the life of patients
  • Explicit commitment to high quality software engineering
  • Our dynamic and experienced team brings the best out of motivated potentials
  • We also offer space for you to add your knowledge, skill and expertise to the team, and the company as a whole, without being rigid or inflexible about the way things need to be done
  • A competitive salary, up to 3 days/week of homeworking and a range of other employee benefits

Your application and related information will remain strictly confidential.

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