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Software Engineer Contract Jobs in Wisconsin (NOW HIRING)

MARS IT

Senior Software Engineer -API

Milwaukee, WI · On-site

$120K - $159K/yr

MARS Solutions Group is looking for an experienced Senior Software Engineer . Our client is an ... Supports contract-first API development practices and tooling built around OpenAPI Specification ...

Levi, Ray and Shoup

Software Engineer

Waukesha, WI

$40 - $50/hr

Codeworks, an LRS company, is seeking a Software Engineer for a Contract opportunity. This role help design, build, and support software applications that power our healthcare solutions. In this role ...

LRS

Software Engineer

Waukesha, WI · On-site

$40 - $50/hr

Codeworks, an LRS company, is seeking a Software Engineer for a Contract opportunity. This role help design, build, and support software applications that power our healthcare solutions. In this role ...

Kasmo Global

Software Engineer role

Brookfield, WI · Hybrid

Software Engineer role 12-month contract Location: Hybrid onsite in Waukesha, WI Our Healthcare client is looking to bring aboard two to three Software Engineers with C++ development background ...

Genesis10

Senior Software Engineer - Hybrid

Brookfield, WI · Hybrid

$75.80 - $85.80/hr

This is a 6 month contract to hire opportunity. Pay range: $75.80 - $85.80 per hour As a Senior Software Engineer, you will join a dynamic full-stack team building and maintaining both internally and ...

Verint Systems

Sr. Engineer, Software

Madison, WI

$123K - $162K/yr

As a Senior Software Engineer, you will take deep technical ownership of significant product ... Own design and architecture reviews for your squad; drive API contract definitions, data model ...

Keylent Inc

Sr. Software Engineer

Neenah, WI

$126K - $166K/yr

USA (Neenah/ Rosewell preferred) Contract Skill: Vistex for SAP Experience: 10+ years Good experience in Vistex pricing, rebates, discounts, bill backs, chargebacks, sale incentives. Vistex ...

MARS IT Corp

Full Stack Engineer

Milwaukee, WI

... contracts for added job security and stability. Full Stack (React Focus) Engineer Requirements: • Bachelor's degree or equivalent experience • 5+ years of professional experience in a software ...

MARS IT

Data Engineer

Milwaukee, WI

$112K - $135K/yr

They are known to respect a traditional work week and often extend contracts for added job security ... Primary Duties & Responsibilities Develop and deploy applications following the software ...

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All JobsSoftware Engineer Contract JobsSoftware Engineer Contract Jobs in Wisconsin

Software Engineer Contract information

See Wisconsin salary details

$64.1K

$148.9K

$207.4K

How much do software engineer contract jobs pay per year?

As of Jun 9, 2026, the average yearly pay for software engineer contract in Wisconsin is $148,903.00, according to ZipRecruiter salary data. Most workers in this role earn between $121,100.00 and $174,600.00 per year, depending on experience, location, and employer.

What are software engineer contracts?

Software engineer contracts are agreements where software engineers are hired on a temporary basis to work on specific projects or for a set period of time, rather than as permanent employees. Contractors often work for multiple clients, are paid hourly or per project, and may have more flexible schedules. These contracts outline the scope of work, compensation, deadlines, and other terms. Contract software engineers are responsible for delivering quality code and meeting the requirements set by the client or organization. This working arrangement can offer more autonomy, but also less job security and benefits compared to full-time employment.

What are the key skills and qualifications needed to thrive as a Software Engineer Contract, and why are they important?

To thrive as a Software Engineer Contract, you need strong programming skills, a solid understanding of software development methodologies, and a relevant degree or proven experience in computer science or related fields. Familiarity with source control systems (e.g., Git), cloud platforms, and proficiency in languages or frameworks required by the contract are crucial, as are any certifications in areas like AWS or Agile methodologies. Excellent problem-solving, adaptability, and communication skills help you quickly integrate with new teams and deliver results in diverse environments. These skills ensure you can efficiently contribute to projects, meet client expectations, and maintain professional flexibility across various assignments.

What is the difference between Software Engineer Contract vs Software Engineer Full-Time?

AspectSoftware Engineer ContractSoftware Engineer Full-Time
Employment TypeTemporary, project-basedPermanent, ongoing
Work EnvironmentTypically freelance or agency-basedCompany offices or remote
CredentialsUsually similar certifications and skillsSame as contract roles
BenefitsLimited or no benefitsHealth, retirement, paid leave

In summary, Software Engineer Contract roles are temporary positions focused on specific projects, often with fewer benefits, while Software Engineer Full-Time roles offer permanent employment with comprehensive benefits. Both roles require similar skills and credentials but differ mainly in employment stability and perks.

What are some common challenges faced by software engineers working on contract positions, and how can they be managed?

Software engineers on contract often face challenges such as quickly adapting to new codebases, understanding diverse team workflows, and managing changing project scopes. It's important to proactively communicate with team members, clarify project requirements early on, and stay organized to meet tight deadlines. Additionally, maintaining a strong personal workflow and being open to feedback can help contract engineers integrate more smoothly and deliver high-quality results within limited timeframes.
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What are popular job titles related to Software Engineer Contract jobs in Wisconsin? For Software Engineer Contract jobs in Wisconsin, the most frequently searched job titles are:
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What cities in Wisconsin are hiring for Software Engineer Contract jobs? Cities in Wisconsin with the most Software Engineer Contract job openings:
Software Engineer Contract jobs near you
Senior Software Engineer -API

Senior Software Engineer -API

MARS IT

Milwaukee, WI • On-site

$120K - $159K/yr

Other

Posted 20 days ago

Job description

MARS Solutions Group is looking for an experienced Senior Software Engineer. Our client is an insurance firm looking for high-quality talent to make a difference. They are known to respect a traditional work week and often extend contracts for added job security and stability.

What's the Role?

Collaborate with the API Enablement team to build and maintain enterprise-grade internal tooling, API governance automation, and developer experience platforms. Contributes to the design and delivery of cross-cutting technical solutions - including API quality enforcement engines, SDK generators, and the enterprise API catalog - that enable domain teams to build and publish high-quality APIs at speed. Supports contract-first API development practices and tooling built around OpenAPI Specification (OAS). Participates in refinement, solution definition, and decomposition of features into deliverable work items. Works across organizational boundaries with domain engineering teams, Enterprise Architecture, and API Management to deliver on the team's highest-priority initiatives. Finds opportunities for continuous improvement and owns initiatives that help the team get better. Engages collaboratively, respects diverse perspectives, and communicates effectively with both technical and non-technical audiences.

Qualifications
  • Bachelor's Degree or equivalent experience
  • 8+ years of professional software development experience required
  • 5+ years of experience with API design, development, and governance including OpenAPI Specification (OAS) and REST best practices
  • Experience with Java and/or Node.js/TypeScript
  • Proficient in practices such as contract-first API design, API quality automation, and internal platform/tooling development
  • Proven track record of architecting and delivering significant developer tooling or platform solutions (e.g., SDK generators, compliance engines, API catalogs)
  • Capable of working autonomously and delivering with minimal direction in an enterprise environment
  • Effective communicator with product, engineering, architecture, and business partners, with proven ability to communicate to both technical and non-technical audiences in varying forms and levels of detail
Skills for Sourcing

Must-Have Skills:

API Development (REST / OpenAPI), Java or Node.js/TypeScript, Internal Developer Tooling / Platform Engineering, Contract-First API Design

Nice-to-Have Skills:

API Quality / Compliance Automation (e.g., Spectral), Client SDK Generation (e.g., OpenAPI Generator / Kiota), API Catalog / Developer Portal Experience, Enterprise Authorization Patterns (PBAC or similar)

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About MARS Solutions Group: MARS Solutions Group provides a range of opportunities for meaningful work by understanding that employment fit is a combination of people, process, and technology. We leverage our experienced and compassionate team to bring humanity to matching you with the right advanced technology role, and stay connected with you to help you attain your professional goals.

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