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Senior Javascript Developer Jobs in Philadelphia, PA

Vangard, Inc.

Senior Mobile DevOps Engineer

Malvern, PA · On-site

$127K - $163K/yr

We are looking for a Senior DevOps Engineer to join our team. You will provide senior level mobile ... React Native (TypeScript/JavaScript) * Familiarity with using mobile analytics tools (e.g ...

Vantage

Sr. Software Developer - PHP

New Hope, PA

Senior PHP Developer Company: Vantage Labs Vantage Labs is a world leader and innovator in the ... HTML/ CSS, JavaScript, XML, jQuery, Angular/React) Preferred skills that would be good to have:

Mirai, LLC

Senior .NET Developer

Philadelphia, PA · On-site

$55.50 - $70.75/hr

The Senior .NET Developer principally supports the Global Financials Systems team, in addition to ... Demonstrated Microsoft Development skills in C#, WCF, Web Services, ASP.NET, JavaScript, Angular ...

Mirai, LLC

Senior .NET Developer

Philadelphia, PA

$55.50 - $70.75/hr

The Senior .NET Developer principally supports the Global Financials Systems team, in addition to ... Demonstrated Microsoft Development skills in C#, WCF, Web Services, ASP.NET, JavaScript, Angular ...

Implify Inc

.Net Developer

Wayne, PA · On-site

$43.75 - $57.75/hr

Position: 2 Role: Sr.Net Developer Location: Wayne, PA Duration: Full Time (Permanent) Opportunity ... Net Development (all tiers) SQL Server Development Experience with Kendo UI and JavaScript driven ...

Systems Staffing Group

sr software Engineer

Horsham, PA · On-site

$120K - $159K/yr

Job Summary : Systems Staffing Group is looking for a Senior Software Developer with an ... Net C# technologies (.NET 4.6+, .Net Core), REST APIs, JavaScript, Typescript, JSON, XML, XSD • ...

Systems Staffing Group

sr software Engineer

Horsham, PA · On-site

$120K - $159K/yr

Systems Staffing Group is seeking a Senior Software Developer with an entrepreneurial mindset to ... Net C# technologies (.NET 4.6+, .Net Core), REST APIs, JavaScript, Typescript, JSON, XML, XSD • ...

USM

Senior .Net Developer

King Of Prussia, PA · On-site

$55/hr

Senior .Net Developer Location: KOP, PA Duration: Long Term Max rate: $55/hr only MUST BE LOCAL ... Net MVC with some JavaScript framework, preferably Angular. Hands-on with Dependency Injection and ...

Horizontal Talent

Sr. Optimizely Developer

Philadelphia, PA · Remote

$116K - $152K/yr

This Senior Optimizely Developer role is a great fit for someone who enjoys building scalable CMS ... Advanced frontend experience with HTML5, CSS3/SASS, and JavaScript, including Vanilla JS, ES6 ...

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Senior Javascript Developer information

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How much do senior javascript developer jobs pay per hour?

As of Sep 2, 2026, the average hourly pay for senior javascript developer in Philadelphia, PA is $60.95, according to ZipRecruiter salary data. Most workers in this role earn between $54.57 and $69.38 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 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 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 most commonly searched types of Javascript Developer jobs in Philadelphia, PA?

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Senior Javascript Developer jobs near you

Senior Mobile DevOps Engineer

Vangard, Inc.

Malvern, PA • On-site

$127K - $163K/yr

Full-time

Re-posted 1 hour ago

Job description

The Mobile team is hiring! We are looking for a Senior DevOps Engineer to join our team. You will provide senior level mobile engineering services, including the direction, evaluation, selection, configuration, implementation, testing, automation, and integration of new or existing technologies and tools.

The Personal Investor Technology Mobile team develops the Vanguard mobile app for our clients. The team has grown rapidly over the past several years and we have established a dedicated Mobile DevOps team. We are now expanding the DevOps team to further develop our mobile CI/CD pipeline, test automation, app store publishing management and other DevOps functions.

Our vision demands that "Vanguard's technology enables disruption through client experience, investment products, and advice." Vanguard's mobile apps are a key component in providing a modern client experience and driving client satisfaction.

What You'll Do

  • Mobile DevOps to support iOS, Android and React Native app development

  • Work cross-functionally with other Mobile product teams to deliver unified value

Qualifications

  • Minimum of eight years related work experience, with at least two years of development experience.

  • Undergraduate degree or equivalent combination of training and experience; graduate degree preferred.

  • Knowledge of Github, Github Actions and Fastlane.

  • Demonstrated experience with AWS infrastructure tools such as CloudFormation or Terraform.

  • Self-motivation and a strong passion for collaboration and partnership.

  • Excellent analytical, problem-solving, and reporting skills.

  • Ability to work across multiple functions spanning various levels of the organization.

  • Strong project execution skills, attention to detail and quality, and a risk-mitigation mentality.

  • Strong written and verbal communication skills.

Nice to Have

  • Experience with Unix / Linux / Mac shell scripting

  • Understanding of mobile platforms differences, advantages and platform-specific hardware and software limitations of mobile ecosystem

  • Understanding of mobile applications development and release cycles, including implementing new features and sunsetting old features for deprecated devices

  • Familiarity with app store submission processes, guidelines, and review criteria for both Apple App Store and Google Play Store

  • Mobile app development on iOS (Xcode/Swift), Android (Android Studio/Kotlin)or React Native (TypeScript/JavaScript)

  • Familiarity with using mobile analytics tools (e.g., Firebase, Splunk) to drive data-informed decisions

  • Knowledge of Mac/MacOS including command-line (Terminal)

Special Factors

Sponsorship

Vanguard is not offering visa sponsorship for this position.

About Vanguard

At Vanguard, we don't just have a mission-we're on a mission.

To work for the long-term financial wellbeing of our clients. To lead through product and services that transform our clients' lives. To learn and develop our skills as individuals and as a team. From Malvern to Melbourne, our mission drives us forward and inspires us to be our best.

How We Work

Vanguard has implemented a hybrid working model for the majority of our crew members, designed to capture the benefits of enhanced flexibility while enabling in-person learning, collaboration, and connection. We believe our mission-driven and highly collaborative culture is a critical enabler to support long-term client outcomes and enrich the employee experience.

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