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Senior Full Stack Software Engineer Jobs in Mercer Island, WA

Ally

Senior Full Stack Engineer

Bellevue, WA · On-site

As Senior Full Stack Software Engineer in our Seattle-based team, you be involved in every aspect of Ally, from design to deployment and help build, evolve, and support the product. You will work ...

impact.com

Full Stack Software Engineer

Seattle, WA · Remote

$110K - $130K/yr

As a Full Stack Software Engineer, you will be responsible for owning and delivering quality features through the full SDLC using Agile methodologies. You will be working on experiences that help our ...

impact.com

Full Stack Software Engineer

Seattle, WA · On-site

$110K - $130K/yr

As a Full Stack Software Engineer, you will be responsible for owning and delivering quality features through the full SDLC using Agile methodologies. You will be working on experiences that help our ...

Impact.com

Full Stack Software Engineer

Seattle, WA · Remote

$110K - $130K/yr

As a Full Stack Software Engineer, you will be responsible for owning and delivering quality features through the full SDLC using Agile methodologies. You will be working on experiences that help our ...

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Senior Full Stack Software Engineer information

See Mercer Island, WA salary details

$54.5K

$165.1K

$233.3K

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

As of Sep 3, 2026, the average yearly pay for senior full stack software engineer in Mercer Island, WA is $165,057.00, according to ZipRecruiter salary data. Most workers in this role earn between $135,900.00 and $193,500.00 per year, depending on experience, location, and employer.

What is a senior full stack software engineer?

A Senior Full Stack Software Engineer is an experienced developer responsible for designing, building, and maintaining both front-end and back-end systems in web or software applications. They work with a variety of technologies, frameworks, and databases to ensure seamless functionality across the entire software stack. In addition to coding, they often provide technical leadership, mentor junior developers, and contribute to architectural decisions. Their role requires strong problem-solving skills, an understanding of best practices, and the ability to collaborate with cross-functional teams to deliver high-quality software solutions.

What does a senior full stack software engineer do?

A typical day for a Senior Full Stack Software Engineer involves designing and implementing new features, reviewing and improving code, and collaborating with product managers, designers, and other developers to deliver project goals. You might split your time between writing code for both front-end and back-end systems, participating in daily stand-up meetings, and providing technical guidance to junior team members. The role often requires balancing hands-on development with architectural planning and problem-solving for complex technical challenges. You’ll also frequently interact with stakeholders to gather requirements and provide updates, ensuring alignment throughout the software development lifecycle.

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

To thrive as a Senior Full Stack Software Engineer, you need deep expertise in both front-end and back-end development, strong problem-solving abilities, and a solid foundation in computer science principles, typically demonstrated by a bachelor’s or master’s degree in a related field. Familiarity with frameworks and languages like React, Angular, Node.js, Python, and proficiency in using cloud platforms, version control systems like Git, and continuous integration tools is crucial, and relevant certifications are an advantage. Exceptional communication, leadership, and teamwork skills help you effectively coordinate with cross-functional teams and mentor junior engineers. These skills ensure you can deliver robust, scalable solutions while driving project success and fostering a collaborative development environment.

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Senior Full Stack Software Engineer jobs near you
Infographic showing various Senior Full Stack Software Engineer job openings in Mercer Island, 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 $165,057 per year, or $79.4 per hour.

Senior Full Stack Engineer

Ally

Bellevue, WA • On-site

Full-time

Medical, Dental, Vision

Re-posted 18 days ago

Ally Financial rating

8.8

Company rating: 8.8 out of 10

Based on 20 frontline employees who took The Breakroom Quiz

17th of 174 rated banks

Job description

Company Description
Who are we?
Ally is a Strategic Goal-Planning & Execution Management software that enables businesses like Slack, Remitly, Plaid, Teleperformance, and UrbanClap to operate with the organizational alignment, agility, focus and transparency they need to match the fast pace needs of their evolving markets. Ally is based on the OKR framework which is an operating model for running agile teams/businesses and that has been made famous by Google and other industry leaders. It is used by hundreds of organizations of all sizes including Slack, Plaid, Remitly, Teleperformance, KPMG, and UrbanClap.
Our team is fuelled with a passion for innovation, growth, and a relentless commitment to making the businesses and teams achieve amazing results. We hire dynamic, passionate, and innovative individuals who thrive in fast-paced environments.
Job Description
The Opportunity:
As Senior Full Stack Software Engineer in our Seattle-based team, you be involved in every aspect of Ally, from design to deployment and help build, evolve, and support the product. You will work closely customers, multiple internal teams including our founder, and make a big impact on the product and customers.
What will you do?
  • Get involved in every aspect of Ally, from design to deployment and help build, evolve, and support the product.
  • Ship high-quality software with a tight-knit engineering team including our top-notch team in India
  • Interact with business and IT leaders at the customer-side to address technical/product issues, define and implement short-term and long-term solutions
  • Quickly develop solutions and continuously deliver software with automated unit/integration tests
  • Be part of the early team and gain exposure to everything it takes to rapidly scale a well-funded software startup

Qualifications
Is this you?
  • Minimum 4-5 years experience in developing and supporting enterprise-grade, user-facing web and mobile applications
  • Strong expertise with JS frameworks such as Angular, as well as coding custom JavaScript solutions
  • Strong expertise in building backend services and APIs using Ruby on Rails and Node JS
  • Strong expertise with relational databases and SQL, as well as NoSQL databases such as Google Firestore.
  • Operational experience with web-scale infrastructure on Public cloud deployments (AWS, Azure, Google Cloud etc.)
  • Enjoys directly working with customers
  • Demonstrating flexibility and efficiency while working with remote teams
  • Keen eye for UX that optimizes the customer journey
  • Working knowledge of shell scripting and continuous integration
  • Strong programming fundamentals and the ability to produce high-quality code
  • Comfort with dynamic start-up environments where change is constant and there is a need to be largely self-guided with complex problems
  • Attention to detail and a high degree of individual ownership
  • Exceptional written and verbal communication skills
  • BS or MS in Computer Science or related technical field

Additional Information
Why Ally?
  • Ally has a culture that is customer obsessed, radically transparent, constant strive for excellence and unstoppable drive for results
  • A supportive environment where you will be surrounded by colleagues committed to helping each other learn, grow and have fun
  • We offer competitive pay and great benefits including health, dental, and vision
  • We are funded by some of the best known VCs and are experiencing hyper growth

Ally is an equal opportunity employer. We welcome and encourage diversity in the workplace regardless of race, gender, religion, age, sexual orientation, gender identity, disability or veteran status.

What Ally Financial employees say

Pay

Benefits

Hours and flexibility

Workplace

Get the full story on Breakroom

Ally Financial logo

About Ally Financial

Sourced by ZipRecruiter

Ally Financial is a customer-centric, leading digital financial services company with passionate customer service and innovative financial solutions. We are relentlessly focused on "Doing it Right" and being a trusted financial-services provider to our consumer, commercial, and corporate customers. For more information, visit www.ally.com.

Industry

Funds, trusts and financial programs

Company size

10,000+ Employees

Headquarters location

Detroit, MI, US

Year founded

1919

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