Sr Software Engineer - Frontend (React JS , Javascript)

About Gartner IT :

Join a world-class team of skilled engineers who build creative digital solutions to support our colleagues and clients. We make a broad organizational impact by delivering cutting-edge technology solutions that power Gartner. Gartner IT values its culture of nonstop innovation, an outcome-driven approach to success, and the notion that great ideas can come from anyone on the team.

About this role:

We’re seeking a well-rounded and motivated Senior Frontend Software Engineer (SSE) to join our Product Delivery Organization, responsible for developing and maintaining web-based applications that drive client engagement and internal productivity. You’ll collaborate closely with Product, UX/UI Design, and backend teams to deliver high-quality, scalable solutions in a fast-paced Agile/Scrum environment.

What you’ll do:

• Collaborate with Product and Design teams to build, test, and ship modern web applications

• Develop reusable front-end components and UX libraries, translating style guides and mockups into polished user experiences

• Work with open-source technologies—primarily React, Node.js, JavaScript—and tools such as Webpack, Rollup, Docker

• Define front-end solutions and explore opportunities to improve existing systems

• Write clean, maintainable code and comprehensive tests (unit, integration, end-to-end)

• Participate in code reviews, pair-programming sessions, and technical design discussions

• Monitor application performance, troubleshoot issues, and optimize for speed and scalability

• Contribute ideas to improve development processes, UI/UX, and adoption of new technologies

What you’ll need:

• 5+ years of professional software development experience with modern front-end technologies: ReactJs (preferred)

• Strong proficiency in JavaScript/TypeScript, functional programming patterns, and component-based architecture

• Experience with React-based frameworks (Next.js), styling preprocessors (Sass/LESS), and UI libraries (Material-UI)

• Familiarity with testing libraries such as Jest

• Exposure to data visualization tools (D3.js, Highcharts)

• Solid understanding of web fundamentals: HTML5, CSS3, cross-browser compatibility, responsive design, performance optimization

• Bachelor’s degree (or foreign equivalent) in Computer Science or related field

• Excellent communication, collaboration, and prioritization skills in an Agile/Scrum environment

• Self-starter mindset with strong problem-solving skills and accountability for end-to-end delivery

Who you are:

• Effective time management skills and ability to meet deadlines.

• Excellent communications skills interacting with technical and business audience’s.

• Excellent organization, multitasking, and prioritization skills.

• Must possess a willingness and aptitude to embrace new technologies/ideas and master concepts rapidly.

• Intellectual curiosity, passion for technology and keeping up with new trends.

• Delivering project work on-time within budget with high quality.

Don’t meet every single requirement? We encourage you to apply anyway. You might just be the right candidate for this, or other roles.

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Who are we?

At Gartner, Inc. (NYSE:IT), we guide the leaders who shape the world.

Our mission relies on expert analysis and bold ideas to deliver actionable, objective insight, helping enterprise leaders and their teams succeed with their mission-critical priorities.

Since our founding in 1979, we’ve grown to more than 21,000 associates globally who support ~14,000 client enterprises in ~90 countries and territories. We do important, interesting and substantive work that matters. That’s why we hire associates with the intellectual curiosity, energy and drive to want to make a difference. The bar is unapologetically high. So is the impact you can have here.

What makes Gartner a great place to work?

Our sustained success creates limitless opportunities for you to grow professionally and flourish personally. We have a vast, virtually untapped market potential ahead of us, providing you with an exciting trajectory long into the future. How far you go is driven by your passion and performance.

We hire remarkable people who collaborate and win as a team. Together, our singular, unifying goal is to deliver results for our clients.

Our teams are inclusive and composed of individuals from different geographies, cultures, religions, ethnicities, races, genders, sexual orientations, abilities and generations.

We invest in great leaders who bring out the best in you and the company, enabling us to multiply our impact and results. This is why, year after year, we are recognized worldwide as a great place to work .

What do we offer?

Gartner offers world-class benefits, highly competitive compensation and disproportionate rewards for top performers.

In our hybrid work environment, we provide the flexibility and support for you to thrive — working virtually when it's productive to do so and getting together with colleagues in a vibrant community that is purposeful, engaging and inspiring.

Ready to grow your career with Gartner? Join us.

The policy of Gartner is to provide equal employment opportunities to all applicants and employees without regard to race, color, creed, religion, sex, sexual orientation, gender identity, marital status, citizenship status, age, national origin, ancestry, disability, veteran status, or any other legally protected status and to seek to advance the principles of equal employment opportunity.

Gartner is committed to being an Equal Opportunity Employer and offers opportunities to all job seekers, including job seekers with disabilities. If you are a qualified individual with a disability or a disabled veteran, you may request a reasonable accommodation if you are unable or limited in your ability to use or access the Company’s career webpage as a result of your disability. You may request reasonable accommodations by calling Human Resources at +1 (203) 964-0096 or by sending an email to ApplicantAccommodations@gartner.com .

Job Requisition ID:101151

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