Senior Frontend Software Engineer

KAYAK

Senior Frontend Software Engineer developing user experiences for KAYAK4Business team. Responsible for building innovative features for millions of corporate travelers.

Posted 5/1/2026full-timeCambridge • Massachusetts • 🇺🇸 United StatesSenior💰 $140,000 - $160,000 per yearWebsite

Tech Stack

Tools & technologies

AngularJavaJavaScriptReactVue.js

About the role

Key responsibilities & impact

Work on K4B product features used by millions of corporate travelers
Have end-to-end ownership of the UI, including testing, monitoring and troubleshooting
Make architectural decisions and build prototypes
Review and scope feature requests
Drive technical debt reduction, oversee code quality, and pair with other developers
Refactor and optimize existing code
Work with geographically distributed teams
Leverage modern AI tools & technologies to build excellent user interfaces

Requirements

What you’ll need

4+ years of meaningful work experience building web applications
Bachelor's degree or higher, preferably in a quantitative/technical field (e.g. Computer Science, Engineering, Physics, Math)
Deep experience building layouts using CSS and HTML
Advanced understanding of JavaScript, ideally with some experience using a modern UI framework or library (we use React, but Angular and Vue.js experience counts)
Knowledge of performance considerations, especially with respect to browsers
Experience working in Java, C#, or a similar object-oriented language
Experience leveraging AI tools (Claude Code, Codex, Cursor or similar) to building high quality software solutions
Ability to…
Debug issues in a full-stack environment
Work independently on solutions and designs with minimal oversight
Produce scalable, high quality, and accurate work
Estimate effort accurately and execute with pace
Show good judgment in architecting software
Use metrics to validate decision-making
Owns communication to key stakeholders on assigned projects
Easily relate technical subjects to non-technical audiences
Demonstrate leadership across teams and business functions

Benefits

Comp & perks

Work from (almost) anywhere for up to 20 days per year
Focus on mental health and well-being:
Company-paid therapy sessions through SpringHealth
Company-paid subscription to HeadSpace
Company-wide week off a year - the whole team fully recharges (and returns without a pile-up of work!)
No meeting Fridays
Paid parental leave
Generous paid vacation + time off for your birthday
Paid volunteer time
Focus on your career growth:
Development Dollars
Leadership development
Access to thousands of on-demand e-learnings
Travel Discounts
Employee Resource Groups
Competitive retirement and health plans
Free lunch 2 days per week
Fun quarterly events such as boat trips, arcades, ski trips, Thursday socials, and more

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

CSSHTMLJavaScriptReactAngularVue.jsJavaC#AI toolsfull-stack development

Soft Skills

independent workproblem-solvingcommunicationleadershipjudgmentcollaborationscalability focusaccuracyeffort estimationstakeholder management

Certifications

Bachelor's degreeComputer Science degreeEngineering degreePhysics degreeMath degree