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Freelance Full Stack Software Engineer Jobs in Seattle, WA

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 ...

Superhuman

Software Engineer, Full-Stack

Seattle, WA · On-site

$163K - $284K/yr

The Opportunity To achieve our ambitious goals, we're looking for Full-Stack Software Engineers to join our engineering teams. As a Full-Stack Engineer at Superhuman, you will play a critical role in ...

Brex

Senior Software Engineer, Full Stack

Seattle, WA · Hybrid

$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 ...

Deloitte

Cyber Full-Stack Software Engineer

Seattle, WA · On-site

As a Full Stack Engineer, you will design, develop, and enhance applications across frontend and backend environments, working with modern engineering practices and cloud-based technologies. You will ...

AllSTEM Connections

Software Engineer III

Seattle, WA · On-site

$193K/yr

Senior Full-Stack Software Engineer Role Overview We are seeking a Senior Full-Stack Software Engineer to serve as a subject matter expert within our scrum-based delivery team. You will be ...

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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.

Full Stack Software Engineer (Application Software)

SpaceX

Redmond, WA • On-site

$145K - $175K/yr

Other

Medical, Dental, Vision, Life, Retirement, PTO

Re-posted 20 days ago

SpaceX rating

8.8

Company rating: 8.8 out of 10

Based on 147 frontline employees who took The Breakroom Quiz

15th of 72 rated aerospace companies

Job description

SpaceX was founded under the belief that a future where humanity is out exploring the stars is fundamentally more exciting than one where we are not. Today SpaceX is actively developing the technologies to make this possible, with the ultimate goal of enabling human life on Mars.
FULL STACK SOFTWARE ENGINEER (APPLICATION SOFTWARE)
The application software team is the central nervous system of SpaceX - we create mission critical applications that are used throughout SpaceX to accelerate launch vehicle production and flight as well as systems that allow Starlink to grow into a worldwide fast, reliable Internet service. We are looking for engineers who treat fellow teammates with fairness, respect, and support.
Our team is currently creating and evolving systems to enable rapid build and reuse of Starship as well as designing the next generation manufacturing software that will be used in high throughput factories for Starlink. Other applications range from platforms that support concurrent streams of data from many always-on assets to manage the world's largest satellite constellation to public facing systems where customers can join our Starlink network globally. We work closely with engineers throughout the company to create and update our systems with respect to crewed launches, Starship flights, changes to the Starlink network and much more.
Aerospace experience is not required to be successful here - rather we look for smart, motivated, respectful, collaborative engineers who love solving problems and want to make an impact on a super inspiring mission. You will have full ownership of challenging problems, working with a team of enthusiastic engineers with diverse perspectives to design and produce solutions that enable SpaceX to move towards our goals at a rapid pace. The success of the missions at SpaceX depends on the software that you and your team produce.
RESPONSIBILITIES:
  • Develop highly reliable software solutions that are used across SpaceX
  • Create new applications that improve how SpaceX operates
  • Build prototypes to prove out key design concepts and quantify technical constraints
  • Own all aspects of software engineering and product development
  • Deep dive into your users' problems to find and create efficient solutions
  • Bring your voice to the table in team collaborations on architecture, design, and code reviews

BASIC QUALIFICATIONS:
  • Bachelor's degree in computer science, engineering, math, or scientific discipline; OR 2+ years of professional experience building software in lieu of a degree
  • 1+ years of experience in full stack development

PREFERRED SKILLS AND EXPERIENCE:
  • Programming experience in Python, C#.NET, Go, Scala, Java, or similar object-oriented language
  • 1+ years of rigorous experience building single page web applications
  • Experience with version control, continuous integration, and continuous delivery concepts
  • Expertise in designing software systems
  • Deep understanding of testing, continuous integration, build, deployment & monitoring
  • Expertise in profiling and improving application performance
  • Experience with build systems (Make, Bazel/Pants/Buck, Gradle) and package management tools (pip, npm)
  • Experience with UNIX-like operating systems and tools like Terraform, Ansible, Puppet for managing them
  • Experience working with in-stream data processing using Apache Kafka, RabbitMQ, ActiveMQ, or similar technologies
  • Production experience with Docker and Kubernetes
  • Front-end experience in Angular, React, or similar JavaScript framework
  • Database experience with PostgreSQL, SQL Server, or similar database technologies

ADDITIONAL REQUIREMENTS:
  • You may be asked to work extended hours/weekends dependent on launch cadence
  • This role requires you to be onsite. Remote and/or hybrid work will not be considered

COMPENSATION AND BENEFITS:
Pay Range:
Software Engineer/Level I: $125,000.00 - $150,000.00/per year
Software Engineer/Level II: $145,000.00 - $175,000.00/per year
Your actual level and base salary will be determined on a case-by-case basis and may vary based on the following considerations: job-related knowledge and skills, education, and experience.
Base salary is just one part of your total rewards package at SpaceX. You may also be eligible for long-term incentives, in the form of company stock, stock options, or long-term cash awards, as well as potential discretionary bonuses and the ability to purchase additional stock at a discount through an Employee Stock Purchase Plan. You will also receive access to comprehensive medical, vision, and dental coverage, access to a 401(k) retirement plan, short and long-term disability insurance, life insurance, paid parental leave, and various other discounts and perks. You may also accrue 3 weeks of paid vacation and will be eligible for 10 or more paid holidays per year. Employees in Washington State accrue paid sick time in compliance with state and federal law. Company shuttles are offered to employees for roundtrip travel from select Seattle locations to the SpaceX Redmond office Monday to Friday.
ITAR REQUIREMENTS:
    Learn more about the ITAR here.

SpaceX is an Equal Opportunity Employer; employment with SpaceX is governed on the basis of merit, competence and qualifications and will not be influenced in any manner by race, color, religion, gender, national origin/ethnicity, veteran status, disability status, age, sexual orientation, gender identity, marital status, mental or physical disability or any other legally protected status.
Applicants wishing to view a copy of SpaceX's Affirmative Action Plan for veterans and individuals with disabilities, or applicants requiring reasonable accommodation to the application/interview process should reach out to

What SpaceX employees say

Pay

Benefits

Hours and flexibility

Workplace

Get the full story on Breakroom

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About SpaceX

Sourced by ZipRecruiter

Industry

Aerospace product and parts manufacturing, data services, guided missile and space vehicle manufacturing and satellite telecommunications

Company size

1,001 - 5,000 Employees

Headquarters location

Hawthorne, CA, US

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