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Freelance Full Stack Software Engineer Jobs in Seattle, WA

AZX

Senior Engineer (Full Stack)

Seattle, WA · On-site

$140K - $225K/yr

Software Engineer (Senior, Full Stack) About AZX Our mission is to accelerate positive impact in critical industries through AI transformation. We're growing quickly and already work with category ...

Brex

Senior Software Engineer, Full Stack

Seattle, WA · On-site

$192K - $240K/yr

What you'll do As a Senior Full-Stack Software Engineer on our Task Workflows Platform team, you will build and scale the foundational infrastructure that powers core experiences across Brex. You ...

Rivet Industries

Software Engineer, Full-Stack

Bellevue, WA · On-site

$180K - $240K/yr

Ship and maintain full-stack end to end: UI, API, database, tests, and docs * Design APIs consumed ... Run full software development life cycle * Uphold and maintain a high-quality codebase over time ...

Helion

Senior Software Engineer, Full Stack

Everett, WA · On-site

$95 - $135/hr

Bachelor's degree in computer science or a related field * 8+ years of software engineering experience building full-stack applications * Hands-on experience with modern web stacks (e.g., React, Next ...

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All JobsFull Stack Software Engineer JobsFreelance Full Stack Software Engineer JobsFreelance Full Stack Software Engineer Jobs in Seattle, WA

Freelance Full Stack Software Engineer information

See Seattle, WA salary details

$50.6K

$153.4K

$216.8K

How much do freelance full stack software engineer jobs pay per year?

As of Aug 22, 2026, the average yearly pay for freelance full stack software engineer in Seattle, WA is $153,373.00, according to ZipRecruiter salary data. Most workers in this role earn between $126,300.00 and $179,800.00 per year, depending on experience, location, and employer.

What does a freelance full stack software engineer do?

A Freelance Full Stack Software Engineer is an independent contractor who designs, develops, and maintains both the front-end (client-side) and back-end (server-side) components of web or software applications. They work with a variety of programming languages, frameworks, and tools to build complete, functional products for clients or companies. Their responsibilities often include gathering project requirements, coding, debugging, deploying applications, and sometimes managing databases or cloud infrastructure. Freelance full stack engineers have the flexibility to choose their projects and clients, often working remotely or on a contract basis.

What are the key skills and qualifications needed to thrive as a freelance full stack software engineer?

To thrive as a Freelance Full Stack Software Engineer, you need strong proficiency in both front-end (e.g., HTML, CSS, JavaScript) and back-end (e.g., Node.js, Python, databases) development, often supported by a relevant degree or portfolio of work. Familiarity with version control systems like Git, cloud platforms such as AWS or Azure, and frameworks like React and Django is typically required. Exceptional communication, self-motivation, and time management skills help you manage client relationships and deliver projects independently. These competencies ensure you can handle diverse project requirements, maintain client trust, and consistently deliver high-quality, end-to-end solutions.

What are some common challenges faced by freelance full stack software engineers, and how can they be managed?

Freelance full stack software engineers often navigate challenges such as managing client expectations, balancing multiple projects, and keeping up with rapidly evolving technologies. Communication is key—setting clear project milestones and maintaining regular updates helps ensure alignment with clients. Additionally, effective time management and continuous learning are vital to juggling diverse tasks and staying competitive in the field. Building a reliable professional network can also help with referrals and collaborative opportunities.

What are the most commonly searched types of Full Stack Software Engineer jobs in Seattle, WA?

The most popular types of Full Stack Software Engineer jobs in Seattle, WA are:

What are popular job titles related to Freelance Full Stack Software Engineer jobs in Seattle, WA?

For Freelance Full Stack Software Engineer jobs in Seattle, WA, the most frequently searched job titles are:

What job categories do people searching Freelance Full Stack Software Engineer jobs in Seattle, WA look for?

The top searched job categories for Freelance Full Stack Software Engineer jobs in Seattle, WA are:

Freelance Full Stack Software Engineer jobs near you
Infographic showing various Freelance Full Stack Software Engineer job openings in Seattle, WA as of August 2026, with employment types broken down into 1% As Needed, 85% Full Time, 9% Part Time, and 5% Contract. Highlights an 88% Physical, 4% Hybrid, and 8% Remote job distribution, with an average salary of $153,373 per year, or $73.7 per hour.

Software Development Engineer (SDE) - Full Stack

Inabia Solutions and Consulting, Inc.

Redmond, WA • On-site

Contractor

Re-posted 11 days ago

Job description

Overview
Inabia is seeking a Full Stack Software Development Engineer for a 12-month onsite contract engagement in Redmond, WA. This is a hands-on build role focused on distributed, cloud-native systems spanning backend services, data systems, and cloud infrastructure. The ideal candidate takes ownership of ambiguous problems and delivers concrete, scalable technical solutions in a fast-moving, agile environment.
Responsibilities
  • Design, build, and ship scalable, fault-tolerant backend services and APIs
  • Build and maintain distributed storage, indexing, and query systems optimized for reliability, cost, and performance
  • Take loosely-defined, ambiguous problems and translate them into concrete technical solutions with clear implementation plans
  • Work across the full stack - backend, data layer, and cloud infrastructure - as the work demands
  • Collaborate with a cross-functional engineering team through sprint planning, code reviews, and retrospectives
  • Ship working software on short, iterative development cycles

Key Qualifications
  • US Citizen or Green Card holder; no visa sponsorship available (C2C, H-1B transfer, OPT/CPT, TN, and third-party visa arrangements not accepted)
  • 4+ years of non-internship professional software development experience
  • Proficiency in at least one of: Java, Python, Go, or SQL
  • Hands-on, production experience with AWS cloud infrastructure (EC2, Lambda, ECS/EKS, RDS, S3, DynamoDB, CloudFormation)
  • Ability to work onsite in Redmond, WA, 5 days per week for the full 12-month contract duration

Preferred Qualifications
  • Experience designing and operating distributed, multi-tiered systems with relational and/or NoSQL databases at scale
  • Exposure to optimization techniques such as linear or nonlinear programming
  • Strong ability to communicate technical tradeoffs clearly to both technical and non-technical stakeholders
  • Comfortable operating with ambiguity - defining solutions from broadly-scoped requirements rather than executing detailed specifications

Apply