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Freelance Developers

A&G is looking to partner with freelancers with unique skillsets across a wide range of languages and technologies to work with us on a project to project basis.  We love experimenting with new technologies and creatively solving problems and because of this we need your help. You'll get the chance to work with the other teams including Creative, User Experience, Business Leadership, Analytics and Digital Production. You'll need a keen curiosity and interest in physical computing and the Internet of Things, passion for navigating malleable data means and the belief that data is the new creative. You love digging into APIs to find new and interesting ways to create new utilities and you're a pro when it comes to responsive design.

We work in a fast paced environment where multi-tasking, attention to detail, collaboration and responsiveness is critical. You should be a self-starter, self-motivated as well as have strong communication and interpersonal skills. The ideal developer we’d like to work with is creative; a person who sees the possibilities of development beyond the code, who can connect code to a bigger picture experience.


We're looking for an array of developers to work with : Front End, .NET & Sitecore, PHP, iOS, Android and Creative developers to name a few. The required experience & responsibilities are listed below. If one of the following is your area of expertise and you feel like building some cool things with us, we want to hear from you!



  • Expert knowledge and experience with HTML, CSS JavaScript, and other web development/production tools
  • CSS Preprocessors such as SASS and LESS
  • Translating comps and wireframes into flexible and usable code
  • Experience with version control using GIT
  • Photoshop and/or Sketch experience
  • Experience developing large customer-facing websites
  • Experience with task runners such as Grunt and Gulp
  • Experience with front-end Frameworks such as Foundation, Bootstrap etc.




  • .NET and Sitecore CMS skills are imperative
  • Proven experience developing high-level applications with a focus on object-oriented programming
  • Expertise with HTML5, CSS (LESS/SASS), JavaScript (jQuery), SVGs and utilization of web APIs
  • Working knowledge of other CMSs, ex: Umbraco, EPiServer
  • An expert understanding of the MVC development pattern
  • Experience with Git versioning systems




  • PHP/MySQL skills are imperative and/or Node.js
  • Proven experience developing high-level applications with a focus on object-oriented programming in the LAMP/LEMP stack
  • Expertise with HTML5, CSS3, JavaScript/jQuery, JSON and utilization of web APIs
  • Experience with CMSs including Wordpress and/or CraftCMS
  • An expert understanding of the MVC development pattern




  • Identify and develop application features
  • Exceptional OO design and development skills
  • Debug and fix application bugs
  • Experience with Mobile database technologies
  • Experience using secured, web-based APIs
  • Hands-on experience supporting iOS applications, screen resolutions and device types
  • Expert in Mobile development (Objective-C, lifecycle of iOS apps, knowledge of Apple's Human Interface Guidelines)




  • Android development experience
  • Hands on Java/J2EE experience
  • Extensive experience in TDD
  • Understanding of multiple device compatibility in addition to various Android API levels, Android permissions, Multi-Threading and memory management specific to mobile devices




  • Unity3D (preferably JavaScript)
  • Developing for Augmentative Reality (AR) and Virtual Reality (VR)
  • Cinder and/or openFrameworks
  • UI for data and graphics-intensive visualization, including voice UI for Cortana, Alexa, Google
  • Three.js and/or Paper.js
  • TouchDesigner
  • Unreal
  • Processing(Java)
  • Projection Mapping


Allen & Gerritsen (A&G) is a fiercely independent agency in the cities where independence was born, Boston & Philadelphia. Innovation & culture drive its success. A&G runs its own innovation think/make tank (A&G Labs), creates original entertainment through its production studio (A&G Entertainment), embeds brands into the cultural conversation through its Brand Newsroom and creates Brand Experiences that marry a brand’s physical and digital worlds to enhance consumer engagement. Ad Age twice has named A&G the Best Place to Work in U.S. Marketing & Media. To learn more, check out or follow the agency on LinkedIn, Facebook, Twitter and Instagram.

Allen & Gerritsen is committed to creating a diverse and inclusive environment and is proud to be an equal opportunity employer. Unsolicited resumes from staffing agencies will not be accepted.

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