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Software Developer Contractor Jobs in Seattle, WA

AI Software Engineer - Remote

Seattle, WA · On-site

$139K - $183K/yr

Contractor (~15 hours/week) Location: Remote Job Summary We are seeking experienced Senior Software Engineers to support an AI training project by creating reinforcement learning environments that ...

Contractor (~15 hours/week) Location: Remote Job Summary We are seeking experienced Senior Software Engineers to support an AI training project by creating reinforcement learning environments that ...

Contractor (~15 hours/week) Location: Remote Job Summary We are seeking experienced Senior Software Engineers to support an AI training project by creating reinforcement learning environments that ...

As a Software Engineering evaluator, you will create cutting-edge datasets for training ... Contractor (no medical/paid leave). * Duration: 1 month (potential extensions based on performance ...

As a Software Engineering evaluator, you will create cutting-edge datasets for training ... Contractor (no medical/paid leave). * Duration: 1 month (potential extensions based on performance ...

As a Software Engineering evaluator, you will create cutting-edge datasets for training ... Contractor (no medical/paid leave). * Duration: 1 month (potential extensions based on performance ...

Showing results 21-40

Software Developer Contractor information

See Seattle, WA salary details

$54.7K

$127.4K

$189K

How much do software developer contractor jobs pay per year?

As of Sep 15, 2026, the average yearly pay for software developer contractor in Seattle, WA is $127,354.00, according to ZipRecruiter salary data. Most workers in this role earn between $102,500.00 and $148,000.00 per year, depending on experience, location, and employer.

What is a software developer contractor?

Software Developer Contractors are professionals hired on a temporary or project basis to design, develop, and maintain software applications for clients or companies. Unlike full-time employees, contractors typically work under a contract for a specific period or for the duration of a project. They may work independently, through agencies, or as part of a consulting firm, and often have specialized skills to meet specific project needs. This arrangement offers flexibility for both the developer and the employer, allowing organizations to scale their technical resources as needed.

What are some common challenges software developer contractors face when integrating with existing teams?

Software developer contractors often join projects mid-stream and must quickly adapt to unfamiliar codebases, workflows, and team dynamics. A common challenge is building rapport with full-time staff and understanding company-specific coding standards or tools. Contractors are expected to be proactive in communicating, asking questions, and clarifying requirements to ensure smooth collaboration. Being flexible and open to feedback helps contractors deliver quality work while navigating these initial hurdles.

What are the key skills and qualifications needed to thrive as a software developer contractor, and why are they important?

To excel as a Software Developer Contractor, you need strong programming abilities, problem-solving skills, and a solid understanding of software development methodologies, often backed by a relevant degree or equivalent experience. Familiarity with version control systems (like Git), cloud platforms, and proficiency in languages such as Python, Java, or JavaScript are commonly required, along with certifications like AWS Certified Developer or Microsoft Certified: Azure Developer. Excellent communication, time management, and adaptability set top contractors apart, enabling them to quickly integrate with diverse teams and projects. These skills are essential for delivering high-quality, timely solutions in dynamic and varied client environments.

What is the difference between Software Developer Contractor vs Software Developer Employee?

AspectSoftware Developer ContractorSoftware Developer Employee
CredentialsTypically requires a relevant degree and technical skills; certifications optionalSame as contractor, often with additional company-specific training
Work EnvironmentContract-based, often remote or on-site for short-term projectsFull-time, usually on-site or hybrid
Employer & Industry UsageCommon in tech firms, startups, consulting agenciesStandard in large corporations, tech companies, and organizations

Software Developer Contractors work on short-term projects, often remotely, with flexible arrangements, while Software Developer Employees are full-time staff with ongoing responsibilities and benefits. Both roles require similar skills and credentials but differ mainly in employment status and work setup.

What cities near Seattle, WA are hiring for Software Developer Contractor jobs?

Cities near Seattle, WA with the most Software Developer Contractor job openings:

Infographic showing various Software Developer Contractor job openings in Seattle, WA as of August 2026, with employment types broken down into 86% Full Time, 9% Part Time, and 5% Contract. Highlights an 85% Physical, 4% Hybrid, and 11% Remote job distribution, with an average salary of $127,283 per year, or $61.2 per hour.

AI Software Engineer - Remote

Seattle, WA • On-site

$139K - $183K/yr

Other

Posted 19 days ago


Job description

Senior Software Engineer

Job Type: Contractor (~15 hours/week)
Location: Remote


Job Summary

We are seeking experienced Senior Software Engineers to support an AI training project by creating reinforcement learning environments that evaluate AI models on complex software engineering tasks using Model Context Protocol (MCP) tools.


You will design reproducible environments, deterministic verification, and reference solutions for tasks such as bug fixing, feature implementation, codebase refactoring, and performance optimization. No prior AI experience is required.


Key Responsibilities

  • Create reinforcement learning environments for software engineering tasks.

  • Design tasks involving bug fixing, feature development, refactoring, and performance optimization.

  • Build deterministic verification systems and golden reference solutions.

  • Evaluate AI agents' ability to reason through complex codebases and use MCP tools effectively.

  • Develop realistic, reproducible software engineering scenarios.

  • Ensure tasks accurately measure coding ability, problem-solving, and tool usage.

  • Document solutions and provide clear technical feedback.


Required Skills

  • Strong proficiency in Python 3, Java, Rust, C++, or TypeScript.

  • Strong understanding of algorithms and data structures.

  • Experience with bug fixing and debugging complex software issues.

  • Proven experience in feature implementation and codebase refactoring.

  • Strong knowledge of performance optimization and tuning.

  • Excellent written and verbal communication.

  • Strong attention to detail.


Preferred Qualifications

  • Experience working with large-scale or distributed codebases.

  • Familiarity with AI/ML systems is a plus but not required.

  • Experience with rigorous code reviews and software engineering best practices.

  • Experience working effectively in remote or cross-functional teams.


Hiring Process

  1. Submit an application and screening questions.

  2. Complete an AI interview (~30 minutes).

  3. Complete a technical assessment, if required.

  4. Hiring Manager review.


Compensation

Compensation is output-based, with payment provided per task that meets project specifications. Minimum weekly submission requirements may apply.


Availability

Selected experts should be prepared to begin their first tasks within 24-48 hours of completing onboarding.

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