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Senior Software Engineer Jobs in Castro Valley, CA

Xoriant Corporation

Sr. Software Engineer - SOC

San Jose, CA · On-site

$143K - $189K/yr

Job Title: Sr. Software Engineer - SOC (318578) Job Location: San Jose, CA (100% remote for now but need to be onsite as soon as campus opens) Duration: 6+ months contract Client: Samsung Description:

KLA-Belgium

Sr. Software Engineer

Milpitas, CA · On-site

$136.30 - $231.70/hr

Sr. Software EngineerSkip to main content#Sr. Software Engineer page is loaded## Sr. Software EngineerApplylocations: Milpitas, CAtime type: Full timeposted on: Posted 4 Days Agojob requisition id ...

Bay Side

Senior Software Engineer

Emeryville, CA

$141K - $186K/yr

As a Senior Software Engineer, you will contribute to all aspects related to engineering, technical design and development. You'll get to play with highly scalable technologies like Redis, MySQL, and ...

New

Fuku

Senior Software Engineer

San Francisco, CA · Hybrid

$180K - $220K/yr

Senior Software Engineer Location: San Francisco (hybrid, 3 days in-office; NYC option depending on business needs) Compensation: $180,000 - $220,000 + Competitive Equity Type: Full-Time Priority:

Fuku

Senior Software Engineer

San Francisco, CA · On-site

$180K - $220K/yr

Senior Software Engineer Location: San Francisco (hybrid, 3 days in-office; NYC option depending on business needs) Compensation: $180,000 - $220,000 + Competitive Equity Type: Full-Time Priority:

Hired Recruiters

Senior Software Engineer

San Francisco, CA · On-site +1

$144K - $190K/yr

As a Senior Software Engineer you will: * Design and build mission-critical software, from robot systems to cloud infrastructure, with attention to performance, reliability, flexibility, and code ...

Hired Recruiters

Senior Software Engineer

San Francisco, CA · On-site

$144K - $190K/yr

As a Senior Software Engineer you will: * Design and build mission-critical software, from robot systems to cloud infrastructure, with attention to performance, reliability, flexibility, and code ...

Titan

Senior Software Engineer

San Francisco, CA

$144K - $190K/yr

Senior Software Engineer About Titan: Titan is an AI holding company transforming IT services with its Augmented AI platform. We acquire and partner with the best Managed Service Providers (MSPs) and ...

endeavorai.com

Senior Software Engineer

San Francisco, CA

$144K - $190K/yr

The Role | Senior Software Engineer As a Senior Software Engineer at Endeavor, you will design and build the core systems that power our product and make pragmatic tradeoffs to move fast without ...

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All JobsSoftware Engineer JobsSenior Software Engineer JobsSenior Software Engineer Jobs in Castro Valley, CA

Senior Software Engineer information

See Castro Valley, CA salary details

$87.1K

$165.3K

$221.6K

How much do senior software engineer jobs pay per year?

As of Sep 3, 2026, the average yearly pay for senior software engineer in Castro Valley, CA is $165,347.00, according to ZipRecruiter salary data. Most workers in this role earn between $141,400.00 and $186,400.00 per year, depending on experience, location, and employer.

What is a senior software engineer?

A senior software engineer designs, codes, tests, and maintains computer software. While these are your primary responsibilities as a senior software engineer, you may also have supervisory duties. These include overseeing a team of junior software engineers or developers. The senior software engineer title is sometimes used interchangeably with senior developer, and positions for both may share similar job duties and responsibilities. In general, software engineers are distinguished from developers in that software engineers apply engineering principles to software development.

What are the key skills and qualifications needed to thrive as a senior software engineer, and why are they important?

To thrive as a Senior Software Engineer, you need advanced programming skills, deep understanding of software architecture, and several years of experience in software development, often supported by a relevant degree. Familiarity with tools like Git, CI/CD pipelines, cloud platforms, and expertise in technologies such as Java, Python, or JavaScript are typically required. Leadership, problem-solving, and effective communication are crucial soft skills for mentoring teams and collaborating across departments. These skills ensure the delivery of robust, scalable solutions and drive successful project outcomes in complex technical environments.

What are some common challenges senior software engineers face when mentoring junior team members?

Senior Software Engineers often mentor junior colleagues, which can be incredibly rewarding but also presents challenges. Balancing mentorship with project deadlines can be demanding, as it requires strong time management and communication skills. Additionally, adapting explanations to different learning styles and levels of experience can be tricky. However, effective mentorship helps build a stronger team and can lead to enhanced leadership opportunities for the senior engineer.

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

AspectSenior Software EngineerSoftware Developer
CredentialsBachelor's or higher in CS or related field; experience often 5+ yearsBachelor's in CS or related field; entry to mid-level experience
Work EnvironmentDesigning complex systems, leading projects, mentoringWriting code, developing features, debugging
Industry UsageUsed across tech companies, startups, enterpriseCommon in software firms, startups, freelance work
Search & ComparisonOften compared for experience level, responsibilitiesCompared for entry-level to mid-level roles

The main difference between a Senior Software Engineer and a Software Developer lies in experience, responsibilities, and scope. Senior Software Engineers typically have more experience, lead projects, and mentor others, while Software Developers focus on coding and feature development. Both roles are essential in tech companies, but the Senior Software Engineer position involves higher-level planning and leadership.

What does a senior software engineer do?

A senior software engineer designs, develops, and maintains software applications, often leading projects and mentoring junior team members. They analyze requirements, write code, perform testing, and collaborate with cross-functional teams to ensure quality and efficiency. Proficiency in programming languages, problem-solving skills, and experience with development tools are essential for this role.
More about Senior Software Engineer jobs

What are the most commonly searched types of Software Engineer jobs in Castro Valley, CA?

The most popular types of Software Engineer jobs in Castro Valley, CA are:

What are popular job titles related to Senior Software Engineer jobs in Castro Valley, CA?

For Senior Software Engineer jobs in Castro Valley, CA, the most frequently searched job titles are:

What cities near Castro Valley, CA are hiring for Senior Software Engineer jobs?

Cities near Castro Valley, CA with the most Senior Software Engineer job openings:

Senior Software Engineer jobs near you
Infographic showing various Senior Software Engineer job openings in Castro Valley, CA as of August 2026, with employment types broken down into 100% Full Time. Highlights an 100% In-person job distribution, with an average salary of $165,347 per year, or $79.5 per hour.

Sr. Software Engineer

Lynx Software Technologies

Sunnyvale, CA • On-site

$150K - $200K/yr

Full-time

Medical, Dental, Vision, Retirement, PTO

Posted 2 days ago

New

Job description

Job Title: Sr. Software Engineer
Location: Onsite - Sunnyvale, CA.
Compensation: $150,000 - $200,000 + Bonus Eligible
Security Clearance: Active Secret Clearance Required
This position requires full time onsite in Sunnyvale, CA.
Who we are: Lynx delivers modular, open standards-based software that transforms how high-assurance, mission-critical edge systems are built, deployed, and maintained. Our secure edge computing solutions enable innovation and operational excellence in the world's most demanding environments, from aerospace and defense to commercial and industrial systems. We partner across industries including automotive, medical, and critical infrastructure to deliver tailored solutions aligned with each customer's mission and operational requirements. Our key products and services are:
  • MOSA.ic: LYNX MOSA.ic™ is a modular software framework and architecture purpose-built for mission-critical edge computing. Based on the Modular Open Systems Approach (MOSA), it provides a flexible foundation for building secure, scalable, and certifiable edge systems.
  • LYNX MOSA.ic.AI: LYNX MOSA.ic.AI is a unified CPU and GPU software platform that enables deterministic, certifiable deployment of AI and advanced workloads in mission-critical edge systems. It brings control, performance, and lifecycle governance together, allowing AI to operate predictably within safety-critical environments without compromising certification or system integrity.
  • CoreSuite 2.0: CoreSuite 2.0 is Lynx's safety-critical GPU for graphics enablement framework designed for mission-critical edge computing systems. It provides hardware-accelerated graphics, visualization, and video processing capabilities that can be certified for high-assurance systems.
  • Services: Lynx Services is Lynx's professional services organization that helps customers design, integrate, certify, deploy, and maintain safety- and security-critical systems. It supports industries like aerospace, defense, automotive, and industrial computing through consulting, engineering, integration, and lifecycle support, reducing development risk and accelerating certification in standards-driven, mission-critical environment.

Company Overview
Founded in 2004 with locations in Atlanta, GA, Fort Worth, TX, Denver, CO, & Huntsville, AL, Thompson Software Solutions (TSS) is a mission-driven aerospace and defense software and systems engineering company supporting the U.S. military, defense primes, and commercial space partners. We specialize in the development, integration, test, and deployment of safety & mission-critical software systems that power next-generation aircraft, defense platforms, and space technologies. Our team understands what it takes to modernize complex embedded systems while maintaining the rigor, compliance, and reliability required for mission and safety-critical environments.
As a defense-focused company of highly skilled and dedicated engineers, we take pride in solving complex technical challenges that directly impact national security and operational readiness. We partner closely with customers across the military aviation and space domains to deliver resilient, future-ready solutions with portability, sustainability, and long-term mission success in mind.
Description
Thompson Software Solutions is seeking a senior-level Sr Software Engineer who is ready to work with a talented team to provide innovative solutions for tomorrow's problems. This position requires a software engineer to use a wide application of technical principles, theories, and concepts in the software field to develop, integrate, and test software products. The successful candidate will be a member of a high-performing multi-site team and must be self-motivated with a strong work ethic, time-management, and interpersonal skills. In this role, you will work independently at times on projects, at other times will be in a collaborative team environment with other software engineers, as well as other program development and deployment teams.
Selected applicants will be subjected to a government security investigation and must meet eligibility requirements for access to classified information and must maintain eligibility for continued access to classified information throughout their employment as required by the job.
Basic Requirements
  • Bachelor's degree in STEM discipline
  • 5+ years of C/C++ software Development experience
  • Experience with Digital Simulation Development and integration
  • Experience with Embedded Software Development
  • Experience with I&T integration and testing.
  • Experience with GITLAB.
  • Experience with Full Software Development Cycle
  • Experience with (FSW) Flight software engineering
  • Proficient with Linux and Windows development environments
  • Experience with compilers, debuggers, static analysis tools, and dynamics analysis tool
  • Ability to professionally communicate project status and collaborate on technical solutions with clients and peers
  • Active Secret Clearance required
  • Ability to work onsite 100%
  • Perform additional job duties as assigned.

Preferred / Additional Skills
  • Proficient with Atlassian Tools (Confluence, JIRA, Bitbucket, etc.)
  • Proficient in Python development
  • Familiarity with Model-Based System Engineering (MBSE) concepts and tools (Cameo, AADL)
  • Experience with Navigation, Guidance and Control Implementation
  • Experience with Signal Processing Implementation
  • Experience developing Embedded Flight Software
  • Experience communicating and documenting complex technical designs
  • Ability to work in a collaborative and team-based environment
  • Excellent written and verbal communication and presentation skills

Sound Exciting? Get in touch today! We have very robust benefits including:
  • Low-cost Medical / Dental / Vision coverage options
  • 401K with generous employer match
  • Responsible Paid Time Off + Paid Holidays
  • Remote work opportunities based on role
  • Employee Assistance Program (EAP)
  • Career growth and professional development opportunities

All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or veteran status.

Apply