Senior Frontend Engineer

Sincere is looking for a Senior Frontend Developer to join our growing team. The ideal candidate has 5+ years of experience in the evolving frontend technology space and considers themselves an expert in React, Next.js, Typescript, HTML, and CSS.  You believe that user interface details really matter, and you care about creating structured, well-tested, and maintainable code. Not only will you play a role in building the future of our products at Sincere, but you will also decide how the engineering team evolves to meet the needs of our Company as we grow.

You will:

  • Develop and implement user-friendly, responsive designs and functionality with React, Next.js, Typescript, Storybook, Tailwind, HTML, and CSS
  • Have the opportunity to own projects and influence design, UX, tooling, and architecture
  • Create and maintain documentation of frontend code, design guidelines, and best practices
  • Work within a nimble team of frontend and backend developers from multiple disciplines
  • Experience firsthand how engineering fits together with the other pieces of an organization to create a successful business and products that delight customers


You are:

  • An experienced developer who considers UI/UX development your craft
  • Passionate and opinionated about creating great products for the web
  • Experienced in leading and working with large frontend applications
  • Familiar with technologies such as Ruby on Rails, Serverless, MySQL, Git, and AWS
  • Eager to learn new technologies and techniques, and adaptable to changing development environments and standards


Do you want to work in a growing company that invests in its employees more than the average company? Sincere is a family of brands with heart. The Company is home to Punchbowl®, Timehop®, and Memento®, and builds technology that brings you closer and helps show you care to the people who matter the most. With Sincere Foundation, we support organizations that address basic needs, and envision a future where everyone has the opportunity to celebrate, recognize milestones, and honor memories. We provide a fun, casual, and innovative environment where hard work is recognized and rewarded.

Some Sincere Perks:

  • 100% healthcare coverage
  • Flexibility to work from wherever you will be most effective
  • A collaborative, start-up environment where you’ll learn a lot, get your hands dirty, and see your work directly impact our business
  • Fantastic, smart coworkers who are passionate about what they do
  • Virtual team coffee chats, trivia challenges, biannual Team Summits, and anything else we can think of to have fun as a team

PLEASE NOTE: Our team is primarily based in Framingham, MA and London, ON. We will consider applicants who reside anywhere in the United States or Canada who are willing to work “East Coast Hours” (roughly 9am-6pm EST). While this role is primarily remote, we have occasional in-person meetings (5-6 times a year typically).