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Critical Mass // digital experience design agency
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The Senior Email Developer (SED) is responsible for designing & writing code & providing support to build also responsive email designs. They need to know HTML, CSS & media query, the SED is able to work independently tasks, assuming ownership for the design & programming required. SED should handle the code very well, to developing a responsive email, this individual will rely on existing designs. The SED should also be able to provide accurate estimates for his tasks. Guide & inspire new hires.

You will: 

  • HTML & CSS oriented for email development.
  • Propose solutions & provide estimations on projects.
  • Work with the design team, tech leads & PMs.
  • Ensure emails follow best practices.
  • Develop responsive email design.
  • Coach & support other Email Developers in fulfill their tasks & improving their skills.
  • Ensure that implementation matches the design.
  • Ability to work under tight deadlines.
  • Create & update templates (basic to complex level).
  • Analyze complex emails testing to improve solutions on environments issues.
  • Knowledge on ADA implementations for emails.
  • Perform code reviews; develop & adhere to coding standards
  • Optimize Images, HTML, CSS code to achieve maximum performance with minimum size.
  • Ensure desktop & browsers engines compatibility.
  • Research online marketing resolutions.
  • Stay abreast of ever-emerging technologies & techniques
  • Being aware & having a proactive, mindful eye to problem identification & mitigation (associated with execution of HTML Email Campaigns); capable & confident problem-solving skills.
  • Using the following programs Adobe Creative Suite (Dreamweaver & Photoshop), MailChimp, HTML/CSS Skills.

You have:

  • English Proficiency (B2+/C1 reading, writing, & conversation).
  • At least 3 - 4 years email specific development experience.
  • Must have digital portfolio, covering dynamic email samples.
  • Familiar with ad publishers (eg. Marketo, Salesforce, Engage, Silverpop, etc)
  • Knowledge on pixel perfect implementation on htmls.
  • Knowledge for MSO compatibility & issues related fixes.
  • ADA compliance knowledge.
  • Dark mode & fixes.
  • Experience dev skills in HTML, CSS
  • Concept of live text vs images
  • Knowledge in W3C Standards (or able to learn quickly about them).
  • Image optimization
  • Independent, responsible, & proactive with the ability to learn & achieve superior results.
  • Understanding of media queries for responsive layout
  • Experience working with mobile & web templates.
  • Basic HTML & simple/nested table structure
  • Hands on QA experience utilizing Litmus or similar.
  • Photoshop proficiency required to manipulate assets.
  • Detail oriented, organized, & the ability to meet deadlines while working with some projects at the same time.
  • Proven experience with modern web standards & cross-browser compatibility issues
  • Familiarity with MSO code.

What We Offer

  • Maternity & parental leave extra days
  • Competitive benefits packages
  • Vacation, compassionate leave, sick days, & flex days
  • Access to online services for families & new parents
  • End-of-year closure days (not deducted from vacation balance)
  • Diversity & Inclusion Board with 12 affinity groups
  • Internal learning & development programs
  • Enterprise-wide employee discounts
  • And more

At Critical Mass, we value our employees & offer competitive compensation & benefits packages. If youre looking for a challenging & 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, & employee experience possible! Our new hires & employees are the future of our organization, & 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.

Critical Mass is an equal opportunity employer that is committed to diversity & inclusion in the workplace. We do not tolerate discrimination on the basis of race, national origin, gender, gender identity, sexual orientation, protected veteran status, disability, age, or other legally protected status. If you are an individual with disabilities who would like to request an accommodation, please reach out to

We are committed to fostering diversity, equity, & inclusion within our pool of candidates, with a target of achieving at least 50% representation from underrepresented communities.

The Critical Mass Talent Acquisition team will only communicate from email addresses that use the URLs and 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 & reach out to them directly.

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