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Senior Javascript Developer Jobs in Downey, CA (NOW HIRING)

TeleSign

Senior Web Developer

Marina Del Rey, CA

Job summary The Senior Web Developer will lead the design and development of customer facing and ... Job Responsibilities The scope will include front-end (CSS/Javascript and AJAX/XHTML) and light ...

Telesign

Senior Web Developer

Marina Del Rey, CA · On-site

Job summary The Senior Web Developer will lead the design and development of customer facing and ... The scope will include front-end (CSS/Javascript and AJAX/XHTML) and light back-end (Django, Python ...

Trinus

Senior Java Developer

Downey, CA · Remote

$58.50 - $74.75/hr

Position Description: We're currently hiring a Senior Java Developer for 12-month W2 contract ... 2, HTML, CSS, JavaScript, Hibernate framework, MVC design, Oracle Database 12c or later.

iSpace, Inc.

Sr. Fullstack Developer

Glendale, CA · Remote

Position: Senior Full-Stack Developer Location: Fully remote Duration: 12+ months Description ... Must have strong JavaScript, Node.js, Postgres experience. Infrastructure is on Amazon - so, must ...

iSpace, Inc.

Sr. Fullstack Developer

Glendale, CA · On-site +1

Position: Senior Full-Stack Developer Location: Fully remote Duration: 12+ months Description ... Must have strong JavaScript, Node.js, Postgres experience. Infrastructure is on Amazon - so, must ...

Skechers

Senior Salesforce Engineer

Manhattan Beach, CA

$125K - $160K/yr

Web Development experience with HTML, CSS, and JavaScript * Experience with AWS Lambda, API Gateway ... Experience working with DevOps teams on implementing CI/CD pipelines and monitoring/alerting.

Skechers

Senior Salesforce Engineer

Manhattan Beach, CA · On-site

$125K - $160K/yr

Web Development experience with HTML, CSS, and JavaScript * Experience with AWS Lambda, API Gateway ... Experience working with DevOps teams on implementing CI/CD pipelines and monitoring/alerting.

Skechers

Senior Salesforce Engineer

Manhattan Beach, CA · On-site +1

$125K - $160K/yr

Web Development experience with HTML, CSS, and JavaScript * Experience with AWS Lambda, API Gateway ... Experience working with DevOps teams on implementing CI/CD pipelines and monitoring/alerting.

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All JobsJavascript Developer JobsSenior Javascript Developer JobsSenior Javascript Developer Jobs in Downey, CA

Senior Javascript Developer information

See Downey, CA salary details

$31

$62

$82

How much do senior javascript developer jobs pay per hour?

As of Aug 12, 2026, the average hourly pay for senior javascript developer in Downey, CA is $62.82, according to ZipRecruiter salary data. Most workers in this role earn between $56.25 and $71.49 per hour, depending on experience, location, and employer.

What is a senior JavaScript developer?

A Senior JavaScript Developer is a highly experienced programmer specializing in JavaScript, including frameworks like React, Angular, or Node.js. They are responsible for designing, developing, and optimizing web applications, ensuring high performance and maintainability. Additionally, they provide technical leadership, mentor junior developers, and collaborate with cross-functional teams to deliver scalable solutions. Strong problem-solving skills, deep knowledge of JavaScript best practices, and experience with modern development tools are essential for this role.

What are typical challenges faced by senior JavaScript developers in day-to-day work?

Senior Javascript Developers often encounter complex challenges such as optimizing web application performance, ensuring code scalability and maintainability, and integrating with diverse APIs and services. They are also expected to troubleshoot legacy code and address security vulnerabilities, all while keeping up with the rapidly evolving JavaScript ecosystem. Collaborating with designers, product managers, and junior developers can add layers of complexity to project requirements. However, overcoming these challenges is rewarding and provides opportunities to shape technical strategy and influence best practices within the team.

What are the key skills and qualifications needed to thrive as a senior JavaScript developer?

To thrive as a Senior Javascript Developer, a strong command of JavaScript (including ES6+), advanced front-end frameworks (like React, Angular, or Vue), and back-end technologies (such as Node.js) are essential, along with several years of professional coding experience. Familiarity with version control systems (like Git), CI/CD pipelines, and relevant certifications (e.g., AWS Certified Developer or JavaScript certifications) is highly valued. Excellent problem-solving abilities, mentorship skills, and effective communication help developers collaborate and lead within cross-functional teams. These skills enable Senior Javascript Developers to build robust applications, guide junior team members, and drive innovation in fast-paced tech environments.

What are popular job titles related to Senior Javascript Developer jobs in Downey, CA? For Senior Javascript Developer jobs in Downey, CA, the most frequently searched job titles are:
What cities near Downey, CA are hiring for Senior Javascript Developer jobs? Cities near Downey, CA with the most Senior Javascript Developer job openings:
Senior Javascript Developer jobs near you
Infographic showing various Senior Javascript Developer job openings in Downey, CA as of June 2026, with employment types broken down into 80% Full Time, 10% Part Time, 3% Temporary, and 7% Contract. Highlights an 78% Physical, 4% Hybrid, and 18% Remote job distribution, with an average salary of $130,659 per year, or $62.8 per hour.

Senior/Staff/Principal C++ Software Engineer

Horizon Surgical Systems, Inc.

Los Angeles, CA • On-site

$135K - $186K/yr

Full-time

Re-posted 3 days ago

Job description

Open Position - Senior/Staff/Principal C++ Software Engineer
Horizon Surgical Systems Inc.
Horizon Surgical Systems Inc. is revolutionizing the world of surgical ophthalmology by developing a novel, AI driven, and imaging-guided surgical robotic system. Horizon Surgical Systems Inc. aims to expand access to care, provide superior capabilities to the human surgeon, and enhance patient outcomes. Microsurgery in general and Ophthalmology are subfields of surgery for which the surgical outcomes can be significantly improved by robotic systems to allow superior dexterity, precision, accuracy, and visualization beyond the human surgeon's own capabilities.
We are seeking highly motivated, and intellectually inquisitive individuals looking to make a positive impact on healthcare via the development of robotic technology. The core values of Horizon Surgical Systems Inc. are:
  • Commitment to Excellence: We aim to deliver superior patient outcomes and surgeon experiences
  • Passion for Creativity and Innovation: We are driven by new ideas and aim to push the boundaries of what's possible
  • Teamwork and Camaraderie: We achieve our best when we collaborate and work together
  • Welcoming of Critical Opinion: We are enriched by constructive criticism and support the best ideas
  • Personal Accountability: We honor our commitments and take responsibility for our actions

Horizon Surgical Systems Inc. offers:
  • An opportunity to build autonomous surgical robotic systems driven by image guidance and AI technology for the future of affordable, high-quality healthcare.
  • The opportunity to work alongside clinicians, engineers, and global leaders in cutting-edge AI, imaging, and robotics technology.
  • Competitive compensation and an excellent company-paid benefits package.

We are seeking a highly motivated C++ software engineer to contribute to a variety of features in our cutting-edge imaging/robotics systems and advance the AI labeling process. This role requires a deep understanding of the software development life cycle, strong in C++, Python, Java, and JavaScript programming, and records of success in building product-level scalable systems and cross-functional collaboration. Knowledge or industrial experience in Robotic platforms, AI processes, and/or Cloud platforms is preferred.
Required Qualifications
  • Educational Background:
    • Bachelor's, Master's or Ph.D. degree in Computer Science, Computer Engineering, Electrical Engineering, or a related field.
  • Technical Skills:
    • Programming Languages: Strong modern C++ and at least one of Python, Java, or JavaScript. Experience in web development is a plus.
    • Operating System: Strong background in Linux development environment, including kernel-level knowledge, system-level programming, and networking.
    • Knowledge or experience in Robotics platforms (like ROS 2 or DDS) is a plus.
    • Knowledge or experience in AI labeling process is a plus.
  • Experience:
    • 5+ years of industrial experience in C++ software development.
    • Proven records of success in product-level scalable systems.
    • Hands-on experience in troubleshooting or system optimization is a plus.
  • Knowledge:
    • Proficiency in Object-Oriented programming and design patterns.
    • Deep understanding of the software development life cycle (e.g., requirement clarification, design and implementation, testing, and integration).
    • Familiarity with git, CI/CD, unit testing, automation testing.
  • Soft Skills:
    • Strong communication skills to collaborate with multiple teams.
    • Self-motivated; Ability to work in a fast-paced, dynamic work environment.
    • Desire to learn new technologies.
  • Other Requirements
    • Willingness to work on-site in either Santa Monica, CA or Malibu, CA.
Responsibilities
  • Requirement Clarification
    • Work closely with cross functional teams to understand, clarify, and finalize requirements.
    • Translate requirements into components, features, or technical enhancements.
  • Design and Implementation
    • Design, implement, and maintain components/features using C++ in our Robotics system.
    • Design and implement components/features using Python, Java, or JavaScript for the AI labeling process and other Cloud backend components.
    • Collaborate with team members to optimize the system and the development process.
    • Contribute to code review and improve best practices in programming and documentation.
  • Testing & Reliability
    • Collaborate with QA to enable/improve automated testing.
    • Support QA testing and troubleshoot online issues.

This is an exciting opportunity to join a high-tech startup that is poised to revolutionize surgical robotics in ophthalmology.

Apply