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Software Development Engineer In Test Jobs in San Mateo, CA

Fiserv, Inc.

SDET

Sunnyvale, CA · On-site

$108K - $163K/yr

Job Title SDET About your role: Fiserv is a global leader in financial services technology, and Clover provides the smart point-of-sale (POS) platform and SDKs that empower thousands of integrators ...

Theory Ventures

Senior SDET

San Francisco, CA · On-site

$140 - $190/hr

Senior SDET San Francisco - Engineering - Hybrid - Full-time About BackOps AI BackOps AI is transforming supply chain operations with agentic AI solutions that automate complex workflows, freeing ...

New

Fiserv, Inc.

SDET

Sunnyvale, CA · On-site

$108K - $163K/yr

Job Title SDET About your role: Fiserv is a global leader in financial services technology, and Clover provides the smart point-of-sale (POS) platform and SDKs that empower thousands of integrators ...

Monitise

SDET

Sunnyvale, CA · On-site

$108K - $163K/yr

Job Title SDET About your role: Fiserv is a global leader in financial services technology, and Clover provides the smart point-of-sale (POS) platform and SDKs that empower thousands of integrators ...

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All JobsSoftware Development Engineer In Test JobsSoftware Development Engineer In Test Jobs in San Mateo, CA

Software Development Engineer In Test information

See San Mateo, CA salary details

$13

$62

$84

How much do software development engineer in test jobs pay per hour?

As of Aug 21, 2026, the average hourly pay for software development engineer in test in San Mateo, CA is $62.37, according to ZipRecruiter salary data. Most workers in this role earn between $54.76 and $70.62 per hour, depending on experience, location, and employer.

What is a software development engineer in test?

A Software Development Engineer In Test (SDET) is a professional who combines software development skills with expertise in testing to ensure the quality of software products. SDETs design, develop, and maintain automated test frameworks, write test scripts, and work closely with developers to identify and resolve defects early in the software development lifecycle. They play a critical role in integrating testing into the development process, improving test coverage, and enabling continuous integration and delivery. SDETs often have strong programming abilities and a deep understanding of both software engineering and quality assurance best practices.

What are the key skills and qualifications needed to thrive as a software development engineer in test?

To thrive as a Software Development Engineer in Test (SDET), you need a solid background in software engineering principles, programming skills (often in languages like Java, Python, or C#), and a strong understanding of testing methodologies. Familiarity with automated testing frameworks (such as Selenium, JUnit, or TestNG), CI/CD tools, and sometimes certifications like ISTQB are typically required. Analytical thinking, attention to detail, and effective communication are essential soft skills that help SDETs collaborate with developers and identify issues efficiently. These skills are crucial to ensure robust, scalable, and high-quality software products through efficient test design and automation.

How does a software development engineer in test typically collaborate with developers and QA teams during the software development lifecycle?

As an SDET, you'll work closely with both software developers and quality assurance teams throughout the development process. Your role involves participating in design and code reviews to ensure testability, creating automated test frameworks, and writing test cases alongside developers. You'll also help identify bugs early, contribute to continuous integration pipelines, and facilitate communication between development and QA to ensure high-quality releases. This collaborative environment allows you to bridge the gap between coding and testing, making you a key player in delivering reliable software.

What is the difference between Software Development Engineer In Test vs Software Engineer?

AspectSoftware Development Engineer In TestSoftware Engineer
Primary FocusDesigning and developing automated tests, ensuring software qualityDeveloping software applications and features
Skills & CertificationsProgramming, testing frameworks, automation toolsProgramming, software design, system architecture
Work EnvironmentQuality assurance teams, development teams, testing labsDevelopment teams, product teams, engineering environments
Industry UsageTech companies, software firms, QA departmentsTech companies, startups, software product companies

While both roles require strong programming skills, Software Development Engineer In Test focuses on automation and testing to ensure software quality, whereas Software Engineers primarily develop new features and applications. Both roles are integral to software development but serve different aspects of the product lifecycle.

What are the most commonly searched types of Software Development Engineer In Test jobs in San Mateo, CA?

The most popular types of Software Development Engineer In Test jobs in San Mateo, CA are:

What cities near San Mateo, CA are hiring for Software Development Engineer In Test jobs?

Cities near San Mateo, CA with the most Software Development Engineer In Test job openings:

Software Development Engineer In Test jobs near you
Infographic showing various Software Development Engineer In Test job openings in San Mateo, CA as of August 2026, with employment types broken down into 1% As Needed, 79% Full Time, 18% Part Time, and 2% Contract. Highlights an 89% Physical, 3% Hybrid, and 8% Remote job distribution, with an average salary of $129,738 per year, or $62.4 per hour.

Software Development Engineer in Test (SDET)

Conch Technologies Inc

Fremont, CA • On-site

Contractor

Re-posted yesterday

Job description

Software Development Engineer in Test (SDET)

Location: Fremont, CA (Onsite – 5 Days/Week)
Duration: 6+Months
 

 Job Summary

We are seeking an experienced Software Development Engineer in Test (SDET) to join a fast-paced engineering team developing a modern internal platform that improves engineering productivity and operational efficiency. This is a highly technical, hands-on role where strong software development skills are equally as important as test automation expertise.

The ideal candidate has extensive experience building scalable automation frameworks using Python and Playwright, enjoys solving complex engineering challenges, and thrives in an agile environment with rapid development and frequent releases.

 Key Responsibilities
  • Design, develop, and maintain scalable automated testing frameworks from the ground up.
  • Build and execute automated tests for web applications, REST APIs, integration testing, and end-to-end user workflows.
  • Collaborate closely with software engineers throughout the development lifecycle to ensure high software quality.
  • Develop automation solutions that support both scheduled releases and continuous deployments.
  • Perform root cause analysis, troubleshoot defects, and drive issue resolution.
  • Improve application reliability, performance, and overall user experience.
  • Participate in code reviews and contribute to engineering best practices.
  • Define automation strategies, testing standards, and quality processes.
  • Continuously improve automation coverage and testing efficiency.
 Required Qualifications
  • 5–6 years of experience as an SDET, Test Automation Engineer, or Software Quality Engineer.
  • Strong programming experience using Python.
  • Hands-on experience with Playwright for web automation.
  • Proven experience designing and building automation frameworks from scratch.
  • Strong understanding of software engineering principles and best practices.
  • Experience testing modern web applications and distributed systems.
  • Excellent debugging, troubleshooting, and analytical skills.
  • Strong verbal and written communication skills.
  • Ability to work effectively in a fast-paced Agile environment.
 Required Technical Skills
  • Python
  • Playwright
  • Test Automation Framework Development
  • API Testing (REST)
  • Object-Oriented Programming (OOP)
  • Data Structures & Algorithms
  • Design Patterns
  • Debugging & Root Cause Analysis
  • System Design Fundamentals
  • End-to-End Testing
  • Integration Testing
  • Web Application Testing
  • Software Quality Engineering
 Preferred Qualifications
  • Experience working in CI/CD environments.
  • Familiarity with rapid release cycles and continuous deployment practices.
  • Experience collaborating closely with software development teams.
  • Passion for software quality, automation, and engineering excellence.