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Senior Mern Stack Developer Jobs in Seattle, WA (NOW HIRING)

Senior Full Stack Software Engineer

Seattle, WA · On-site

$142 - $220.50/hr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

## Senior Full Stack Software EngineerApplylocations: Seattle, WAtime type: Full timeposted on: Posted ... developer experience tooling**Why this team...**The Catalogs, Hierarchy & Org MDM team is in an ...

... Senior Software Engineers to help take it to the next level. This isn't a role for someone looking to maintain the status quo. We're building a small, elite team of full-stack engineers who use AI ...

Senior Full Stack Engineer (AI-Native Platform)

Seattle, WA · On-site

$140 - $190/hr

  • Medical

  • Dental

  • Vision

  • Retirement

  • PTO

Senior Full Stack Engineer (AI-Native Platform) Seattle, WA (On-site)About Pipe17 Pipe17 is ... developer productivity. Qualifications Required * 3-5 year experience building industrial grade ...

Fullstack Software Engineer, LiveOps

Seattle, WA · On-site

$142K - $250K/yr

  • Medical

  • Dental

  • Vision

  • Retirement

  • PTO

About this Role: We're seeking a Senior or Principal full stack engineers to help lead development ... MERN, MEAN, LAMP or equivalent). * Strong background in RESTful or microservice oriented ...

Contribute to developer experience: tooling, local development loops, CI/CD ergonomics, and the ... Clear communication skills - able to discuss technical tradeoffs with PM leads and senior technical ...

... Senior Software Engineers to help take it to the next level. This isn't a role for someone looking to maintain the status quo. We're building a small, elite team of full-stack engineers who use AI ...

Showing results 21-40

Senior Mern Stack Developer information

See Seattle, WA salary details

$27

$67

$97

How much do senior mern stack developer jobs pay per hour?

As of Aug 14, 2026, the average hourly pay for senior mern stack developer in Seattle, WA is $67.44, according to ZipRecruiter salary data. Most workers in this role earn between $56.06 and $77.69 per hour, depending on experience, location, and employer.

What are the key skills and qualifications needed to thrive as a Senior MERN Stack Developer, and why are they important?

To thrive as a Senior MERN Stack Developer, you need deep expertise in JavaScript, proficiency with MongoDB, Express.js, React.js, and Node.js, and typically a bachelor's degree in computer science or related field. Experience using source control systems like Git, familiarity with cloud platforms (e.g., AWS), and understanding of CI/CD pipelines are highly valued. Strong problem-solving, leadership, and effective communication skills help you guide teams and collaborate with stakeholders. These skills ensure efficient development of scalable web applications and effective team leadership in dynamic tech environments.

What is a Senior MERN Stack Developer?

A Senior MERN Stack Developer is an experienced software engineer who specializes in building full-stack web applications using the MERN stack: MongoDB, Express.js, React, and Node.js. They handle both front-end and back-end development, create scalable and efficient applications, and often mentor junior team members. In addition to coding, they may be responsible for designing application architecture, optimizing performance, and ensuring best practices throughout the development process.

How does a Senior MERN Stack Developer typically collaborate with other team members on large-scale projects?

As a Senior MERN Stack Developer, you’ll often work closely with front-end and back-end developers, UI/UX designers, QA engineers, and product managers to deliver robust web applications. Collaboration usually involves participating in code reviews, architectural discussions, sprint planning, and daily stand-up meetings. You may also mentor junior developers, help define best practices, and ensure seamless integration across the MERN (MongoDB, Express, React, Node.js) stack. Effective communication and teamwork are essential, especially when troubleshooting complex issues or deploying new features.

What are the most commonly searched types of Mern Stack Developer jobs in Seattle, WA?

The most popular types of Mern Stack Developer jobs in Seattle, WA are:

What are popular job titles related to Senior Mern Stack Developer jobs in Seattle, WA?

For Senior Mern Stack Developer jobs in Seattle, WA, the most frequently searched job titles are:

Senior Software Development Engineer Full Stack

Replenium

Seattle, WA • On-site

Full-time

Medical, Dental, Vision, Retirement

This job post has expired today. Applications are no longer accepted.


Job description

Salary:

Replenium (Rp) delivers intelligent product replenishment solutions which fundamentally improve the way consumers shop for everyday products. With Replenium, any retailer or brand can offer their customers ways to discover, manage and replenish products with little effort in a fraction of the time of traditional shopping. Our leadership has a stellar track record of success, has created several shopping innovations. Were a fun team that is growing and were looking for a talented Senior Full Stack Developer to join our team!


In this role, you will be working with subject matter experts, internal customers, business experts and other developers to understand our business opportunity, see how our current applications address that, and work to evolve our future offerings. Your understanding of information architecture; visual design patterns, cloud development, OOP, Microservice design and your expertise on all levels of the web stack will be leveraged as you set our applications up to grow and delight our users long into the future. We are a Cloud Hosted SaaS solution built on a Microservice's architecture with Azure stack.


What youll do:

  • Take an active role in defining and building how our applications look, work, and grow
  • Build powerful web applications from within a user-centered design methodology
  • Utilize your experience and knowledge of containers, microservices, SQL/NoSQL storage systems and server-less computing to build a performant, scalable platform that addresses a wide range of customer needs
  • Keep up to date on the latest technologies and understand their benefits and tradeoffs and apply that knowledge as you build.
  • Examine current technology and create a path forward to build the next generation platform for our customers and partners.
  • Collaborate with multiple stakeholders and technical team to gather requirements and execute

What youve done:

  • Proficiency in front-end programming using HTML, CSS, JavaScript, Typescript, and AngularJS or React frameworks
  • Hands-on development experience including microservice design and OOP, specifically working with C#/.Net recent experience with .NET Core is a strong plus
  • 5+ years of experience building scalable system software and/or services
  • Worked with user interface design patterns and user-centered design methodologies
  • Demonstrated ability to plan, schedule, and deliver high quality software
  • Developed strong collaboration skills across many different disciplines
  • Experience with Agile Development methodologies

What youve got:

  • Ability and interest in thriving in a fast-paced, startup like environment
  • Bachelors Degree in Computer Science or equivalent
  • Fluency in best practices for web-based information architecture and design
  • Passion for customers
  • Excellent written and verbal communication skills
  • Open mind to explore different solutions and ideas presented by others

Whats in it for you?

  • Remote working environment
  • Working with a talented, dynamic, and collaborative group people
  • Competitive salary and benefit package
  • Medical, Dental and Vision insurance
  • 401k
  • Flexible working hours
  • A casual, relaxed atmosphere in a modern, spacious office in the Pioneer Square area with convenient access to transit and phenomenal views of the Puget Sound and Lumen Field.


Replenium celebrates and values diversity and is committed to cultivating an inclusive environment that encourages connection, collaboration, and creativity. We strive to hire, develop and retain the most talented people from different backgrounds, who bring unique views and skills to our team, and as a result are inspired to reach and do amazing work every day. We are committed to equal employment opportunity regardless of race, color, ethnicity, national origin, ancestry, religion, gender, gender identity or expression, sexual orientation, age, citizenship, marital or parental status, disability, veteran status, or other class protected by applicable law. We are proud to be an equal opportunity workplace.