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Freelance Full Stack Software Engineer Jobs in Seattle, WA

Medium

Senior Full Stack Software Engineer

Seattle, WA · On-site

$172.20 - $206.64/hr

We are looking for an experienced Senior Full Stack Software Engineer to join our dynamic and growing team. In this role, you will play a pivotal part in designing, building, and maintaining scalable ...

New

Expedia

Full Stack Software Engineer II

Seattle, WA · On-site

$190K/yr

As a Full Stack Software Engineer working on Expedia's critical production checkout applications, your mission will be to ensure Expedia Checkout is always fast, available, scalable, and engineered ...

OpenAI

Full Stack Software Engineer, Codex

Seattle, WA · On-site

$255K - $405K/yr

About the Role We're hiring a Full Stack Software Engineer to help invent the next generation of AI-powered software development workflows. "Full stack" in this role means much more than traditional ...

NICE

Senior Full Stack Software Engineer

Seattle, WA · On-site

Have you got what it takes? * 5+ years of professional software engineering experience with strong full-stack fundamentals * Proficiency in TypeScript/Node.js or Go on the backend and React ...

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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 8, 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 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 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 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 88% Full Time, 8% Part Time, and 4% Contract. Highlights an 88% Physical, 3% Hybrid, and 9% Remote job distribution, with an average salary of $153,373 per year, or $73.7 per hour.

Senior Full Stack Software Engineer

Medium

Seattle, WA • On-site

$172.20 - $206.64/hr

Other

Medical, Dental, Vision, Life, Retirement, PTO

Posted 3 days ago

New

Job description

We are looking for an experienced Senior Full Stack Software Engineer to join our dynamic and growing team. In this role, you will play a pivotal part in designing, building, and maintaining scalable web applications and APIs, leveraging cloud-native technologies. You will be responsible for the full lifecycle of software development, from conception to deployment, including designing system architecture, implementing solutions, and optimizing performance.

Key Responsibilities
  • API Development: Design, develop, and maintain robust, secure, and scalable APIs that integrate with various services and platforms.
  • Full Stack Development: Build responsive and high-performance front-end and back-end applications using modern frameworks (Java, React, Node.js, etc.).
  • Automated Test Development: Develop API and microservices tests (including contract testing and service virtualization) and UI tests using modern test automation tools and frameworks.
  • Cloud-Native Architecture: Design and implement scalable, cloud-native applications on AWS, using best practices for security, reliability, and performance.
  • Containerization: Create and manage applications deployed using various container runtimes (Lambda, Amazon ECS/EKS, Kubernetes, etc.).
  • Distributed Systems: Design and develop scalable, distributed systems that support high availability and resilience.
  • Event-Driven Architecture: Implement event-driven architectures using tools such as Apache Kafka, Amazon SNS/SQS, or similar technologies to enable real-time data processing and asynchronous communication.
  • Microservices: Design and maintain microservices-based applications that can be deployed, scaled, and updated independently.
  • Unit Testing: Write and maintain comprehensive unit tests for both front-end and back-end applications to ensure code quality and stability.
  • CI/CD Pipelines: Build and maintain continuous integration and continuous deployment (CI/CD) pipelines (e.g., GitHub Actions, GitLab Pipelines, Jenkins, Bitbucket Pipelines).
  • Database Design & Optimization: Design and optimize databases, working with both relational (e.g., PostgreSQL, MySQL) and NoSQL databases (e.g., DynamoDB).
  • Collaborate: Work closely with product managers, UX/UI designers, and other engineers to deliver high-quality products in a timely manner.
  • Code Reviews: Participate in code reviews, providing constructive feedback and ensuring high standards for code quality and maintainability.
Skills and Qualifications
  • Work Authorization: Must be legally authorized to work in the United States without employer sponsorship.
  • Location Requirement: Must be a resident of the continental United States.
  • 8+ years of experience as a Full Stack Software Engineer or in a similar role.
  • Strong proficiency in API development (REST, GraphQL).
  • Expertise in Docker and container orchestration tools (Kubernetes, AWS ECS/EKS).
  • Proven experience with AWS Cloud Services (e.g., EC2, Lambda, RDS, S3, CloudFormation).
  • Experience in designing and working with distributed systems and event-driven architecture.
  • Strong programming skills in Java, JavaScript/TypeScript (React, Node.js), or similar languages (e.g., Python, Go).
  • Experience with unit testing frameworks (e.g., Jest, Mocha, JUnit) for front-end and back-end applications.
  • Experience building and maintaining CI/CD pipelines (e.g., GitHub Actions, GitLab Pipelines, Jenkins, Bitbucket Pipelines).
  • Experience with relational and NoSQL databases (e.g., PostgreSQL, MySQL, MongoDB, DynamoDB).
  • Solid understanding of DevOps practices and tools (CI/CD pipelines, Infrastructure as Code, monitoring).
  • Familiarity with front-end development using modern frameworks (e.g., React, Angular, Vue.js).
  • Familiarity with microservices architecture and serverless technologies (e.g., AWS Lambda, API Gateway).
  • Knowledge of security best practices and performance optimization in cloud environments.
  • Strong problem-solving skills, with the ability to troubleshoot complex technical issues.
  • Experience with Agile development methodologies.
  • Excellent communication and collaboration skills.
Compensation

$125–$150/hour with full benefits, including:

  • 401(k) with employer matching 6%
  • Health, dental, and vision insurance
  • Paid time off
  • Life insurance

At DevAltus, we’re a boutique consultancy specializing in cloud-native infrastructure, cybersecurity, and custom software solutions. As a Senior Full Stack Software Engineer, you’ll play a key role in building secure, scalable systems for enterprise clients while collaborating with a team that values innovation, autonomy, and technical excellence.

We’re looking for passionate engineers who thrive on solving complex problems across the stack in a collaborative, high-trust environment. If that’s you, we’d love to connect.

Please ensure your resume reflects relevant skills and experience that match this role, particularly AWS and DevOps tools listed in the application.

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