User Interface Full Stack Developer Jobs in Seattle, WA

MG2, an affiliate of Colliers Engineering & Design, is currently looking for a Senior Full Stack Developer to join our Technology team in Seattle, WA in a hybrid work arrangement. 

The Senior Full Stack Developer is a senior technical contributor and emerging people leader responsible for delivering endtoend application development while helping to mentor and shape a highperforming team in collaboration with the Director of Product Strategy. This role requires a strong full stack developer who is comfortable owning projects, making informed and aligned decisions, partnering with stakeholders, and mentoring less experienced team members. Working across East Coast, China and India time zones may be required.

The ideal candidate thrives in a collaborative environment, builds strong working relationships, is committed to continuous learning, and demonstrates leadership traits that position them to eventually serve as a future partner and backup to the Director.

• Leads and contributes to the design, development, and implementation of full stack solutions, spanning the user interface, application logic, and database layers.
• Owns projects end-to-end, including requirements clarification, solution design, coding, testing, documentation, and deployment.
• Collaborates with program managers and business analysts to understand requirements, translate business needs, and ensure strong technical outcomes.
• Develops high quality, maintainable, and scalable applications aligned with existing standards, tools, and architectural patterns.
• Manages source control workflows, branching strategies, and CI/CD deployment pipelines.
• Troubleshoots complex technical issues and drive long term improvements in code quality, system reliability, and performance.
• Maintains awareness of industry trends and best practices, applying them when aligned with organizational standards and priorities.
• Mentors and supports junior developers through technical guidance, code reviews, and structured coaching.
• Strengthens the team by training others, building redundancy, and fostering strong knowledge sharing practices.
• Contributes to team culture by promoting a collaborative, positive, and growth oriented working environment.
• May manage a team of junior developors in the future.
• Serves as a trusted advisor and eventual backup to the Development Manager, demonstrating readiness for broader leadership responsibilities.

• Bachelor’s in Computer Science or equivalent.
• 10 years of experience in related fields.
• Both hands-on development and team mentoring.
• Ability to read, write and understand English for purposes of comprehending written job-related communications and verbal instructions and interactions.

Technical Expertise – Front End Development

• Strong proficiency in HTML, CSS, and JavaScript.
• Experience with frameworks such as React or Angular.
• Experience with one or more of the following: js, Java, PHP
• Ability to build APIs, services, and scalable backend component.

Database Technologies

• Strong working knowledge of MS SQL and Azure SQL.
• Ability to design schemas, write queries, and optimize performance.

Other

• Familiarity with Git and established version control strategies.
• Experience with CI/CD pipelines and standard deployment processes.

Compensation: $125,00 to $170,00 per year (depending on qualifications)

At MG2, an affiliate of Colliers Engineering & Design, we value our employees with great benefits and worthwhile programs. We are proud of the many initiatives at MG2 such as our focus on Sustainability and Inclusion & Belonging. We promote MG2 culture firmwide and within each of our offices through monthly recognition, happy hours, summer events, and an end of year Holiday Party to celebrate our accomplishments. People make the place at MG2 – Join our growing firm today!

MG2 offers competitive benefits that support our employees in their life and career. This position is eligible for company benefits including but not limited to:

• Employer provided employee healthcare plan and reduced cost premium plans, life insurance, and short and long-term disability coverage.
• Paid Time Off, 7 paid Holidays, and an additional 3 Floating Holidays.
• Employer sponsored Family Planning Program and employer Paid Parental Leave.
• Learning & Career Development opportunities.
• Employee Wellness and Employee Assistance Program.
• Participation in a 401K program including eligible company match percentage, after waiting period.

• Bachelor’s in Computer Science or equivalent.
• 10 years of experience in related fields.
• Both hands-on development and team mentoring.
• Ability to read, write and understand English for purposes of comprehending written job-related communications and verbal instructions and interactions.

Technical Expertise – Front End Development

• Strong proficiency in HTML, CSS, and JavaScript.
• Experience with frameworks such as React or Angular.
• Experience with one or more of the following: js, Java, PHP
• Ability to build APIs, services, and scalable backend component.

Database Technologies

• Strong working knowledge of MS SQL and Azure SQL.
• Ability to design schemas, write queries, and optimize performance.

Other

• Familiarity with Git and established version control strategies.
• Experience with CI/CD pipelines and standard deployment processes.

Compensation: $125,00 to $170,00 per year (depending on qualifications)