Senior UI Developer

Who we are:

Kolabtree is an on-demand platform with a vision to accelerate R&D and innovation through academia-business collaboration by connecting clients to highly qualified freelancers for advanced services. Put simply, we’re Uber for Scientists We look for people who want to build something revolutionary – who are passionate and enjoy problem solving in an uncertain environment. Ever wondered what it would’ve felt like to be part of the founding teams at Airbnb or Google? This is your chance to find out!


The opportunity:

We are looking for Senior UI Developer to join Kolabtree’s engineering team. As a valued member of the team, you will be developing and delivering a visually rich and behaviorally responsive application interface to Kolabtree users. We are looking for someone with fantastic attention to details and a passion for delivering world-class user experience.



  • Create and revise HTML, CSS, Angular and jQuery for website and application pages
  • Make sure web and application pages are fully responsive and optimized across devices
  • Optimize front-end code for fast cross-browser and cross-device performance
  • Implement UI validation where applicable
  • Use UI frameworks like Material UI to develop the aesthetics for website or product pages, from the layout menus and drop-down options to colors and fonts
  • Participate in design and code reviews
  • Build reusable code and libraries for future use
  • Ensure the technical feasibility of UI/UX designs
  • Implement industry best UI best practices for performance


Requirements (Desired skills & experience)

  • Must have 5+ yrs of experience including HTML5, CSS3, Angular 8+, jQuery, Bootstrap 3+ and Bootstrap material design Confidential
  • Proficient understanding of CSS pre-processing platforms, such as LESS and SASS
  • Ability to consume web APIs using Ajax and handle data binding on the UI
  • Experience in Responsive layouts and UI development
  • Proficient understanding of cross-browser compatibility issues and ways to work around them
  • Must have fantastic attention to detail and good eye for aesthetics: layout, grid systems, color theory and typography.
  • Working knowledge of Open Source CMS like WordPress is a plus
  • Proficient understanding of cross-browser compatibility issues and ways to work around them
  • Excellent communication and collaborative skills


What’s in it for you?

  • Be a member of a startup team where your work will directly contribute to business growth. You’re not just a cog in the machine, everything you do will matter.
  • Take advantage of major learning opportunities only available in a startup environment. Working with a small team, you’ll get a full 360 degree view of the business and work with a variety of roles and functions, with plenty of opportunities to work on new technologies and innovative solutions.
  • Enjoy a safe startup environment supported by CACTUS: As a startup incubated and owned by Cactus Communications, Kolabtree’s stakeholders are deeply invested in its success and fully support the Kolabtree team in all aspects.


Learn about Our Culture:

CACTUS is a culture-driven company powered by its people, their passion, and their inspiration. All Cactizens live by the culture and values that define us. We value people for their talent, personality, competency, and the ability to learn and grow. We create a work environment that allows people to thrive and show their best performance. We believe in meritocracy.

We take pride in our diversity. We strive to embrace diverse voices and create an inclusive workplace.

We encourage all Cactizens to talk openly about their ideas and opinions and provide feedback to anyone who is a part of CACTUS, regardless of designation, experience, or seniority. We also encourage them to place their trust and be open to differences in opinions and feedback.

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Cactus Communications Pvt. Ltd.
B-502, Satellite Gazebo, Guru Hargovindji Marg,
Andheri (East), Mumbai - 400093, India
Phone: +91–22–67148888 Fax: +91–22–67148889