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Senior Software Developer Jobs in Mercer Island, WA

Microsoft

Senior Software Engineer

Redmond, WA · On-site

$160K - $261K/yr

Overview We are looking for an outstanding Senior Software Engineer to join the Microsoft Discovery team and work on an exciting new Artificial Intelligence (AI)-driven platform that will transform ...

The Walt Disney Company

Sr Software Engineer

Seattle, WA · On-site

$139K - $183K/yr

Job Posting Title: Sr Software Engineer Req ID: 10135205 Disney Entertainment and ESPN Product & Technology Technology is at the heart of Disney's past, present, and future. Disney Entertainment and ...

Compass

Senior Software Engineer

Seattle, WA · On-site

$176K - $196K/yr

As a Senior Software Engineer, you will use your experience with microservices based architecture to build products that deliver high business impact for our customers. You will lead design and ...

YO AI Labs

Senior Software Engineer - Remote

Seattle, WA · Remote

$139K - $183K/yr

Senior Software Engineer Job Type: Contract Location: Remote Job Summary: In this role, you'll apply your expertise to help train next-generation AI systems. Your work will shape how models learn ...

AIM

Senior Software Engineer

Seattle, WA · On-site

$139K - $183K/yr

Responsibilities What you will own As a Senior Software Engineer, you will design and build the ... Improve developer experience, CI/CD, test frameworks, and local development tooling. * Help define ...

Confiz Limited

Senior Software Engineer

Seattle, WA · On-site

$120 - $160/hr

Confiz is seeking a Sr. Software Engineer/ Technical Lead to join our Seattle, WA team. This role is ideal for an experienced engineer who can design and deliver scalable solutions, influence ...

Armada

Senior Software Engineer

Seattle, WA · On-site

$139K - $183K/yr

The Senior Software Engineer will architect and develop core services for the Armada Edge Platform, focusing on software, networking, and platform infrastructure. Responsibilities : • Architect and ...

Armada

Senior Software Engineer

Tacoma, WA · On-site

$131K - $173K/yr

The Senior Software Engineer will architect and develop core services for the Armada Edge Platform, focusing on software, networking, and platform infrastructure. Responsibilities : • Architect and ...

NexHealth

Senior Software Engineer, Fullstack

Seattle, WA · On-site

$139K - $183K/yr

The Senior Software Engineer, Fullstack will build scalable software that enhances patient experiences and improves the relationship between patients and doctors while tackling complex challenges in ...

SpaceX

Sr. Software Engineer (Platform Team)

Redmond, WA · On-site

$160K - $225K/yr

Passion for AI risk mitigation, developer productivity, and turning complex engineering challenges into simple, scalable AI-powered outcomes COMPENSATION AND BENEFITS: Pay range: Sr. Software ...

SpaceX

Sr. Software Engineer (Platform Team)

Redmond, WA · On-site

$160K - $225K/yr

Passion for AI risk mitigation, developer productivity, and turning complex engineering challenges into simple, scalable AI-powered outcomes COMPENSATION AND BENEFITS: Pay range: Sr. Software ...

Microsoft

Senior Software Engineer

Redmond, WA · On-site

$137K - $180K/yr

Microsoft is hiring an experienced Senior Software Engineer to join the Auction Logic team ... Preferred Qualifications: * 5+ years of experience as a professional software developer.

Ai2

Senior Software Engineer, Fullstack

Seattle, WA · On-site

$139K - $183K/yr

The Senior Software Engineer, Fullstack will work closely with UX designers and research scientists to develop AI-powered applications, engaging in the entire software development lifecycle and ...

Microsoft

Senior Software Engineer

Redmond, WA · On-site

$160K - $261K/yr

The Power, Thermal, and Battery team is looking for a Senior Software Engineer to join our team and help build the next generation of platform software, diagnostics, telemetry, power and performance ...

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All JobsSoftware Developer JobsSenior Software Developer JobsSenior Software Developer Jobs in Mercer Island, WA

Senior Software Developer information

See Mercer Island, WA salary details

$18

$75

$107

How much do senior software developer jobs pay per hour?

As of Aug 11, 2026, the average hourly pay for senior software developer in Mercer Island, WA is $75.60, according to ZipRecruiter salary data. Most workers in this role earn between $64.18 and $84.81 per hour, depending on experience, location, and employer.

What skills and qualifications are needed to thrive as a senior software developer?

To thrive as a Senior Software Developer, you need deep expertise in programming languages, software architecture, and problem-solving, typically backed by a bachelor’s degree in computer science or a related field. Proficiency with development frameworks, version control systems like Git, and cloud platforms such as AWS or Azure is standard, and certifications in these areas can be beneficial. Leadership, strong communication, and mentoring abilities set standout candidates apart in this role. These skills ensure that complex projects are delivered efficiently, code quality is maintained, and junior team members are effectively guided for overall team success.

What does a senior software developer do?

As a Senior Software Developer, you’ll typically be responsible for leading complex development projects, designing technical solutions, and mentoring junior team members. Daily tasks often include writing and reviewing code, participating in architecture discussions, collaborating with cross-functional teams (such as QA, product management, and DevOps), and troubleshooting high-level technical issues. You may also be involved in setting coding standards, conducting code reviews, and helping to plan sprints or project roadmaps.

What is a senior software developer?

Senior Software Developers are experienced professionals who design, develop, and maintain complex software applications. They often lead development teams, mentor junior developers, and make critical architectural decisions. Their responsibilities include writing high-quality code, troubleshooting technical issues, and ensuring that software projects meet performance and security standards. With deep expertise in programming languages and software engineering principles, they play a key role in delivering successful technology solutions for organizations.

What is the difference between Senior Software Developer vs Software Engineer?

AspectSenior Software DeveloperSoftware Engineer
CredentialsBachelor's degree in CS or related field; experience often 5+ yearsBachelor's or higher in CS or related field; similar experience levels
Work EnvironmentCollaborates on complex projects, mentors juniors, leads technical effortsDesigns, develops, tests software; may work on specific modules or systems
Industry UsageCommonly used in tech companies, startups, and enterprise firmsWidely used across industries, often interchangeable with developer roles

The main difference is that Senior Software Developers typically have more experience, leadership responsibilities, and focus on complex project oversight, while Software Engineers may focus more on designing and implementing software solutions. Both roles require similar credentials and are integral in software development teams, but Senior Software Developers often take on mentorship and strategic tasks.

More about Senior Software Developer jobs
What are the most commonly searched types of Software Developer jobs in Mercer Island, WA? The most popular types of Software Developer jobs in Mercer Island, WA are:
What are popular job titles related to Senior Software Developer jobs in Mercer Island, WA? For Senior Software Developer jobs in Mercer Island, WA, the most frequently searched job titles are:
What job categories do people searching Senior Software Developer jobs in Mercer Island, WA look for? The top searched job categories for Senior Software Developer jobs in Mercer Island, WA are:
What cities near Mercer Island, WA are hiring for Senior Software Developer jobs? Cities near Mercer Island, WA with the most Senior Software Developer job openings:
Senior Software Developer jobs near you
Infographic showing various Senior Software Developer job openings in Mercer Island, WA as of August 2026, with employment types broken down into 1% Internship, 80% Full Time, 15% Part Time, and 4% Contract. Highlights an 85% Physical, 5% Hybrid, and 10% Remote job distribution, with an average salary of $157,255 per year, or $75.6 per hour.

Senior Software Engineer

Microsoft

Redmond, WA • On-site

$160K - $261K/yr

Full-time

Re-posted 18 hours ago

Microsoft rating

8.5

Company rating: 8.5 out of 10

Based on 132 frontline employees who took The Breakroom Quiz

78th of 242 rated software companies

Job description

Overview
We are looking for an outstanding Senior Software Engineer to join the Microsoft Discovery team and work on an exciting new Artificial Intelligence (AI)-driven platform that will transform the scientific research process. Microsoft Discovery is a cutting-edge enterprise platform that uses AI agents and high-performance computing to accelerate research and development (R&D) in science and engineering. Microsoft Discovery is already driving breakthroughs in collaboration with partners across industries like chemistry and materials, energy, manufacturing, and pharmaceuticals, showcasing its potential to solve real-world challenges through AI-powered discovery.
We innovate quickly, learn from data and experience, think creatively, and have fun - all while tackling challenging customer and partner problems. You will be part of a startup-like environment within Microsoft, joining a highly motivated team that enjoys tough challenges and rapid development iterations. We collaborate closely with key platform teams across Microsoft and Microsoft Research to design, build, and operate the Discovery platform and related products.
In alignment with our Microsoft values, we are committed to cultivating an inclusive work environment for all employees to positively impact our culture every day. Microsoft's mission is to empower every person and every organization on the planet to achieve more. As employees we come together with a growth mindset, innovate to empower others, and collaborate to realize our shared goals. Each day we build on our values of respect, integrity, and to create a culture of inclusion where everyone can thrive at work and beyond.
Responsibilities
As a Senior Software Engineer, you will:
  • Design and build scalable, distributed systems from the ground up.

  • Drive features from ideation to global rollout.

  • Mentor engineers and lead design/code reviews.

  • Improve engineering velocity and service reliability through adoption of AI-enabled process enhancements.

  • Collaborate across Microsoft Research and platform teams to integrate cutting-edge technologies.

  • Apply site-reliability engineering practices to ensure robust operations.

Qualifications
Required/minimum Qualifications:
  • Bachelor's Degree in Computer Science or related technical field AND 4+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python
    • OR equivalent experience.

Other Requirements:
  • Ability to meet Microsoft, customer and/or government security screening requirements are required for this role. These requirements include, but are not limited to the following specialized security screenings:
    • Microsoft Cloud Background Check: This position will be required to pass the Microsoft Cloud Background Check upon hire/transfer and every two years thereafter.

Preferred Qualifications:
  • Hands on experience with cloud platforms and enterprise-scale services.

  • Familiarity with widely used scientific tools in chemistry, physics and bio sciences.

  • Proficiency in building web user experience for scientists or developers.

  • Deep problem-solving skills and a bias for action.

  • Passion for scientific innovation and cross-disciplinary collaboration.

  • Advanced degree (MS/PhD) is a plus.
  • 2+ years of experience in building and operating reliable distributed systems.
  • Familiarity with building AI-powered services and multi-agent systems.

Software Engineering IC4 - The typical base pay range for this role across the U.S. is USD $119,800 - $234,700 per year. There is a different range applicable to specific work locations, within the San Francisco Bay area and New York City metropolitan area, and the base pay range for this role in those locations is USD $160,200 - $261,000 per year.
Certain roles may be eligible for benefits and other compensation. Find additional benefits and pay information here:
https://careers.microsoft.com/us/en/us-corporate-pay
This position will be open for a minimum of 5 days, with applications accepted on an ongoing basis until the position is filled.
Microsoft is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to age, ancestry, citizenship, color, family or medical care leave, gender identity or expression, genetic information, immigration status, marital status, medical condition, national origin, physical or mental disability, political affiliation, protected veteran or military status, race, ethnicity, religion, sex (including pregnancy), sexual orientation, or any other characteristic protected by applicable local laws, regulations and ordinances. If you need assistance with religious accommodations and/or a reasonable accommodation due to a disability during the application process, read more about requesting accommodations.

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About Microsoft

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Our infrastructure is comprised of a large global portfolio of more than 100 datacenters and 1 million servers. Our foundation is built upon and managed by a team of subject matter experts working to support services for more than 1 billion customers and 20 million businesses in over 90 countries worldwide. With environmental sustainability and optimization at the forefront of our datacenter design and operations, we continue to grow and evolve as we meet the ever-changing business demands that hold Microsoft as a world-class cloud provider.

Industry

Computer and computer peripheral equipment and software wholesalers

Company size

10,000+ Employees

Headquarters location

Redmond, WA, US

Year founded

1975

Social media

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