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Front End Developer (Emails and Banners)

Company:
Critical Mass
Location:
San Jose, Costa Rica
Posted:
April 30, 2025
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Description:

We are looking for an experienced and motivated Front-End Developer (FED). The FED is responsible for completing front-end tasks and providing support to web applications. The FED is able to work independently in basic tasks, assuming ownership for the design and programming required. For more complex work, this individual will rely on existing designs and seek guidance from more senior positions. The FED should also be able to provide constant progress status to a senior level as needed and estimates for his tasks, that must be approved by his senior or technology lead of the current project.

A FED works with web applications and a variety of front-end technologies including HTML5, JavaScript and is comfortable with content management systems platforms.

You will

Responsible for translating graphic designs delivered in composition documents into standard-compliant HTML and CSS

Collaborate in implementing data exchange between application layers via AJAX

Work closely with Creative, Business, Technology and QA teams to ensure quality and punctual web development

Translate graphical designs and wireframes into fully styled markup code

Implement technical solutions following the Capability’s best practices

Debug or troubleshoots simple issues in existing web applications

Provide feedback on policies and procedures when an opportunity for improvement exists

Proactively provide coaching and support to other members of the in fulfilling their tasks and improving their performance and overall technical skills

Ensure concise and clear documentation is maintained by all peers for the projects as dictated by each Capability’s guidelines and best practices

Debug or troubleshoot complex or critical issues that cannot be handled by junior positions, and provides root cause analysis

You have

Ideally, intermediate-advanced English Proficiency (B2+ reading, writing, and conversation)

At least 2+ years of experience working with Front-End technologies (HTML/CSS/JavaScript)

Experience dealing with Cross-browser and Responsive development

Excellent knowledge of recent development practices (Mobile First, MVC, Object-Oriented development)

Basic experience with popular JavaScript frameworks and cross-browser compatibility

Work experience with automation and pre-processing tools (e.g., Gulp, SASS)

Work experience integrating web solutions with external web services advanced-level knowledge of Front-End technologies (e.g., HTML, CSS, JavaScript)

Knowledge of pre-processed CSS styling (SASS, LESS)

Fluency with data transfer formats and protocols popular in web applications (e.g., JSON, XML, HTTP)

Capable of working with version control systems (GIT)

Capable of building proof of concept prototypes

Capable of integrating a web solution based on a Content Management System

Capable of troubleshooting, debugging, and doing root cause analysis of web applications issues

Capable of consuming, parse and translate SOAP or REST web services

Working experience with Emails or Banners development

BS in Computer Science or related technical discipline; or equivalent experience as Software Developer)

Capable of writing code compliant with modern accessibility (e.g., ARIA, WCAG, Microformats, ADA, RDF) and SEO guidelines and best practices

Previous experience in pharmacy accounts

Experience in Digital Agencies projects, Web development projects, SCRUM/Agile software projects)

Knowledge of design patterns (e.g., model-view-controller, observer, object-oriented, etc.) and working with several mainstream libraries and frameworks (jQuery, React, VueJS, or any other)

What We Offer:

Maternity and parental leave extra days

Competitive benefits packages

Vacation, compassionate leave, sick days, and flex days

Access to online services for families and new parents

Diversity and Inclusion Board with 12 affinity groups

Internal learning and development programs

Enterprise-wide employee discounts

And more…

At Critical Mass, we value our employees and offer competitive compensation and benefits packages. If you’re looking for a challenging and rewarding opportunity to make a significant impact on the lives of our employees, we encourage you to apply for this exciting position today!

The Talent Team at Critical Mass is focused on ensuring we provide the best training, onboarding, and employee experience possible! 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.

The ask stems from our want to:

Strengthen opportunity for continuous learning

Improve collaboration and team relationships.

Increase employee engagement

This work model balances the need for individual flexibility while maintaining the relentless customer focus we provide at CM. We understand that not everyone may feel comfortable with this expectation, so we ask that you please let us know immediately if there are any concerns so we can help navigate accordingly.

Critical Mass is an equal opportunity employer.

The Critical Mass Talent Acquisition team will only communicate from email addresses that use the URLs 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.

If U.S. based:

If Canada based:

If U.K. based:

If Costa Rica based:

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