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

360 IT Professionals

Sr. Tableau Developer

Glendale, CA · On-site

$100K - $120K/yr

Take a shot at us for your IT requirements and experience a radical change. Sr. Tableau Developer ... Familiarity with Tableau's JavaScript API. Tableau certification is a plus Ability to provide ...

Jobsbridge

Senior Java Developer

Hawthorne, CA · On-site

$58.25 - $74.25/hr

Skill Senior Java Developer Location Hawthorne, CA Total Experience 6 yrs. Max Salary Not Mentioned ... HTML, CSS, JavaScript, AJAX, JQuery, JSON, XML, XSD, XSLT, etc. Experience using one or more of the ...

3B Staffing LLC

Senior Angular Developer

Glendale, CA · On-site

$58 - $71/hr

Senior Angular developer Responsibilities * Develop modular, independently deployable components ... Create responsive user interfaces with HTML5, CSS3, and JavaScript, ensuring compatibility across ...

Posted today

Jobsbridge

Senior Node.js Developer

Los Angeles, CA · On-site

$58.75 - $77.50/hr

Be it core Java, full-stack Java, Web/UI designers, Big Data or Cloud or Mobility developers ... Javascript Knowledge of Node.js and frameworks available for it like Typescript and React ...

3B Staffing LLC

Senior Angular Developer

Glendale, CA · On-site

$58 - $71/hr

Senior Angular developer Responsibilities * Develop modular, independently deployable components ... Create responsive user interfaces with HTML5, CSS3, and JavaScript, ensuring compatibility across ...

Posted today

PacSun

Sr. OMS Developer

Anaheim, CA · On-site

$116K - $132K/yr

As a Senior OMS Developer, this is a crucial role in designing and developing technical solutions ... Mastery of programming languages such as JavaScript and Java. * Strong understanding of data ...

Prosum

Senior Front-End Engineer

Glendale, CA

$129K - $178K/yr

Sr. Front-End Engineer We are looking for a passionate engineer who wants to shape the next ... A master of: JavaScript (coffeescript, typescript, es6) HTML CSS (LESS/SASS/Stylus) Able to ...

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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.

Sr. Fullstack Developer - Interactive

iSpace, Inc

Glendale, CA • On-site

Other

Posted 13 days ago

Job description

Title: Senior Full-Stack Developer - Interactive
Location: Hybrid - Glendale, CA
Duration: 6 Months +
Position Summary
Seeking a highly skilled Senior Full-Stack Developer to design and develop next-generation interactive facility maps and digital rental experiences for our customers. This role will focus on transforming static property and unit maps into dynamic, customer-friendly digital experiences that provide real-time unit availability, pricing, promotions, and online rental capabilities.
The ideal candidate will possess strong front-end, back-end, and data integration expertise, with experience building interactive web applications that combine visual mapping technologies, real-time inventory systems, and e-commerce functionality.
Key Responsibilities

  • Design and develop interactive storage facility maps that allow customers to view available units, pricing, dimensions, and property features.
  • Convert static PDF and facility layout diagrams into responsive, interactive digital experiences.
  • Build customer-facing web applications that enable online reservations, rentals, and account management.
  • Integrate real-time inventory, pricing, and promotional data from enterprise systems and APIs.
  • Develop scalable front-end applications using modern JavaScript frameworks such as React, Angular, or Vue.
  • Create interactive SVG- and canvas-based visualizations representing storage units and facility layouts.
  • Collaborate with UX/UI designers to deliver intuitive and engaging customer experiences.
  • Develop and maintain RESTful APIs and backend services supporting availability, pricing, reservations, and rental transactions.
  • Integrate applications with CRM, inventory management, payment processing, and customer service platforms.
  • Optimize application performance, scalability, security, and mobile responsiveness.
  • Participate in architecture reviews, code reviews, and technology planning initiatives.


Required Qualifications

  • 5+ years of experience developing customer-facing web applications.
  • Strong proficiency in JavaScript, TypeScript, HTML5, and CSS3.
  • Experience with React, Angular, or Vue.js.
  • Experience developing interactive SVG, Canvas, or mapping-based applications.
  • Strong backend development experience using .NET/C#, Node.js, Java, or Python.
  • Experience designing and consuming REST APIs and integrating third-party services.
  • Strong SQL and database development skills (SQL Server, PostgreSQL, Oracle, MySQL, etc.).
  • Experience working with cloud platforms such as Azure, AWS, or Google Cloud.
  • Understanding of application security, authentication, and authorization best practices.


Preferred Qualifications

  • Experience with Google Maps API, Mapbox, Leaflet, or GIS-based technologies.
  • Experience developing e-commerce, reservation, booking, or rental platforms.
  • Knowledge of real-time pricing engines and inventory management systems.
  • Experience working with customer analytics and behavioral data.
  • Familiarity with CI/CD pipelines, DevOps practices, and modern software architecture patterns.

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