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Senior Software Developer Jobs in Fairfield, CA (NOW HIRING)

CommodityAI

Senior Software Engineer

San Francisco, CA · On-site

$144K - $190K/yr

What You'll Do As a Senior Software Engineer, you will own core technical pillars of our operating system, working directly with the founders to scale our infrastructure and AI capabilities: • ...

Cadre, Inc.

Senior Software Engineer

San Francisco, CA

$144K - $190K/yr

Company Description We're looking for a Senior Software Engineer that will be a valued team member responsible for the design and implementation of our client's product. Our client is the world ...

Cadre, Inc.

Senior Software Engineer

San Francisco, CA · On-site

$144K - $190K/yr

Company Description We're looking for a Senior Software Engineer that will be a valued team member responsible for the design and implementation of our client's product. Our client is the world ...

Finix

Senior Software Engineer

San Francisco, CA

$150K - $220K/yr

The Sr. Software Engineer role centers around envisioning superior technical solutions to our customers' payment needs, leading its implementation and continuously ensuring reliable service to our ...

Finix

Senior Software Engineer

San Francisco, CA · On-site

$150K - $220K/yr

The Sr. Software Engineer role centers around envisioning superior technical solutions to our customers' payment needs, leading its implementation and continuously ensuring reliable service to our ...

Finix

Senior Software Engineer

San Francisco, CA

$150K - $220K/yr

The Sr. Software Engineer role centers around envisioning superior technical solutions to our customers' payment needs, leading its implementation and continuously ensuring reliable service to our ...

Flow Engineering

Senior Software Engineer

San Francisco, CA · On-site

$190K - $250K/yr

About the role Flow is seeking full stack senior software engineers to build AI-powered capabilities that help teams author, review, and manage requirements more effectively. You will work on agentic ...

Heartflow

Senior Software Engineer

San Francisco, CA · On-site

$180K - $215K/yr

As a Senior Software Engineer, you will help design and build the architecture and data modeling for a next-generation distributed system that seamlessly and securely integrates Heartflow's cloud ...

PayZen

Senior Software Engineer

San Francisco, CA · On-site

$190K - $225K/yr

About the Role We are looking for a Senior Software Engineer - an individual contributor who owns a product surface end-to-end. At this level, you work independently on your surface and are guided on ...

Technacity Group

Senior Software Engineer

Concord, CA · On-site

$133K - $176K/yr

They are seeking a Senior Software Engineer to design, build, and scale their core platform, working closely with the CTO and influencing engineering culture while delivering mission-critical systems.

Abbott

Senior Software Engineer

San Francisco, CA

$144K - $190K/yr

We are seeking a Senior Software Engineer, Backend to design, build, and optimize Lingo's backend ... developer experience. You will contribute your expertise to architecture discussions, lead ...

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All JobsSoftware Developer JobsSenior Software Developer JobsSenior Software Developer Jobs in Fairfield, CA

Senior Software Developer information

See Fairfield, CA salary details

$15

$62

$89

How much do senior software developer jobs pay per hour?

As of Sep 2, 2026, the average hourly pay for senior software developer in Fairfield, CA is $62.82, according to ZipRecruiter salary data. Most workers in this role earn between $53.32 and $70.43 per hour, depending on experience, location, and employer.

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 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 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 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 Fairfield, CA?

The most popular types of Software Developer jobs in Fairfield, CA are:

What are popular job titles related to Senior Software Developer jobs in Fairfield, CA?

For Senior Software Developer jobs in Fairfield, CA, the most frequently searched job titles are:

What cities near Fairfield, CA are hiring for Senior Software Developer jobs?

Cities near Fairfield, CA with the most Senior Software Developer job openings:

Senior Software Developer jobs near you
Infographic showing various Senior Software Developer job openings in Fairfield, CA as of August 2026, with employment types broken down into 83% Full Time, 10% Part Time, and 7% Contract. Highlights an 85% Physical, 4% Hybrid, and 11% Remote job distribution, with an average salary of $130,671 per year, or $62.8 per hour.

Senior Software Engineer - Remote

YO AI Labs

San Francisco, CA • Remote

$144K - $190K/yr

Full-time

Re-posted 9 days ago

Job description

Job Title: 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, reason, and perform through high-quality, real-world input. No prior experience in AI is required — your domain knowledge is what matters.

We are seeking strong Software Engineers to join our customer's team with expertise in Python3, Java, Rust, Go, C++, or TypeScript. This is a unique opportunity to directly impact the next generation of AI by leveraging your advanced engineering skills in a dynamic, remote setting.

Required Skills and Qualifications:

  • Proficiency in Python3, Java, Rust, or TypeScript, with additional experience in C++ or Go considered a strong asset.
  • Deep understanding of algorithms, data structures, and performance tuning.
  • Demonstrated experience in debugging complex software issues and delivering maintainable solutions.
  • Strong background in feature development and codebase refactoring.
  • Proven ability to optimize software for performance and scalability.
  • Exceptional written and verbal communication skills, with a keen attention to detail.
  • Track record of success in collaborative, cross-functional teams, ideally in remote settings.


Preferred Qualifications:

  • Previous experience working on large-scale, distributed codebases.
  • Familiarity with modern AI or machine learning systems is a plus, though not required.
  • Background in participating in rigorous code reviews and contributing to the development of software best practices.