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Senior Front-End Developer, React

London

Tribal is a creative force that blends strategy, design, and technology, and we are on the hunt for a talented and experienced Senior Developer who is equal parts craftsperson, collaborator, and tech trailblazer to elevate our London-based team! As a Senior Front-End Developer (SFED), you’ll help shape digital experiences from bold marketing sites to interactive web applications, bringing both creative flair and technical excellence to everything you touch and the code you produce.

In this role, you will work with a team of creative individuals while also collaborating closely with your Tech Lead to provide insightful solutions and accurate estimates for your tasks. You’ll immerse yourself in a diverse array of front-end technologies, including REACT, HTML5, CSS, and JavaScript, and you’ll be right at home with content management systems.

Our new hires & employees are the future of our organization, and we want to set you up for long-term success. In an effort to do so, we expect our team to work from an office a minimum of 3 days a week.

You will:

  • Develop web applications that follow the latest web standards and conform to leading-edge front-end technologies
  • Work closely with the Creative, Business, Technology, and QA teams to ensure the solution meets the requirements and performance targets (mobile and desktop).
  • Own the development of web applications and ensure they follow the overall technical architecture and design established by the technical lead
  • Implement user and business requirements, which are composed of multiple development activities
  • Maintain up-to-date and complete documentation on projects as dictated by the capability’s guidelines and best practices
  • Debug or troubleshoot complex issues in existing web applications
  • Proactively provide feedback on policies and procedures when an opportunity for improvement exists
  • Proactively provide guidance and support to other members in fulfilling their tasks and improving their performance and overall technical skills.

You have: 

  • At least 5-7 years of experience working with Front-End technologies (HTML/CSS/JavaScript)
  • Excellent knowledge of recent development practices (Mobile First, MVC, Object Oriented development)
  • Fluency in ReactJS
  • Work experience with cross-browser and cross-device compatibility
  • Work experience with automation and pre-processing tools (e.g. Gulp, Grunt, LESS)
  • Work experience integrating web solutions with external web services
  • Knowledge of design patterns (e.g., model-view-controller, observer, object-oriented, etc.)
  • Experience of pre-processing CSS styling
  • Fluency with data transfer formats and protocols popular in web applications (e.g. JSON, XML, HTTP)
  • Experience writing code compliant with modern accessibility (e.g. ARIA, WCAG, Microformats, ADA, RDF) and SEO guidelines and best practices
  • Experience working with version control systems (SVN, GIT, Mercurial)
  • Experience building proof-of-concept prototypes
  • Experience troubleshooting, debugging, and doing root cause analysis of web application issues.
  • Cloud knowledge: AWS, Azure, etc.
  • Desirable: Experience in Digital Agencies projects, Web development projects, SCRUM/Agile software projects. 

What We Offer 

  • Global maternity and parental leave 
  • Competitive benefits packages 
  • Vacation, compassionate leave, wellness days, and flex days 
  • Access to online services for families and new parents
  • Early Dismissal Friday’s (off at 3:00 PM local time every Friday) 
  • Diversity and Inclusion Board with 13 affinity groups 
  • Internal learning and development programs 
  • Enterprise-wide employee discounts 

Tribal Worldwide is an equal opportunity employer. 

The Tribal Worldwide Talent Acquisition team will only communicate from email addresses that use the URLs tribalworldwide.co.uk, criticalmass.com, and us.greenhouse-mail.io. We will not use apps such as Facebook Messenger, WhatsApp, or Google Hangouts for communicating with you. We will never ask you to send us money, technology, or anything else to work for our company. If you believe you are the victim of a scam, please review your local government consumer protections guidance and reach out to them directly. UK based https://www.gov.uk/consumer-protection-rights 

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DE&I Questionnaire

Voluntary Self-Identification

At Critical Mass, we are dedicated and determined to build a workforce that reflects the diversity of the communities in which we live and work. It is crucial that every team member can thrive and reach their full potential.

With that said, we’d like to know a little more about you. We ask all applicants to fill out the below voluntary self-identification questions in order to evaluate and improve our recruitment and diversity efforts. Answering is completely voluntary and will not affect the outcome of your application.

The data collected may be reviewed by the Critical Mass Talent Acquisition Team, Human Resources, our Diversity, Equality and Inclusion team, and our executives, but they will neither be reviewed by nor disclosed to anyone else. All the information that you share with us pursuant to this survey will be stored on our secure network servers located within Canada and the United States.  We will only retain this information so long as it is necessary for the purpose that we have described here or as may be required by applicable laws. Thereafter, we will either anonymize the information or delete it entirely.  If you elect to complete this survey, and at any point in the future you wish to retract or amend your responses, or otherwise have any questions about your data, you may contact our Talent Acquisition team at accommodations@criticalmass.com.

As set forth in Critical Mass’s Equal Employment Opportunity policy, we do not discriminate on the basis of any protected group status under any applicable law.

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Aboriginal Peoples means persons who are defined as: Indians (more commonly referred to as First Nations), Inuit, or Métis.

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Members of Visible Minorities means persons, other than Aboriginal people, who are non-Caucasian in race or non-white in color.
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Persons with Disabilities Definition:

Persons with Disabilities means persons who have a physical or mental impairment or medical condition that substantially limits a major life activity, or if you have a history or record of such an impairment or medical condition.

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