Mobi.AI

Senior Frontend Engineer

Somerville, Massachusetts, United States · Senior · Full-time

Sponsorship not specified$140k-$200kDetected 79 days ago

JavaScriptReactHTMLCSSViteGitRESTUX DesignWireframingCypressPlaywrightJestResearchCommunicationCollaborationProblem Solving

About the role

We're seeking a passionate and innovative Frontend Engineer to help define the next generation of intelligent customer experiences at the intersection of travel and AI.
You'll be working on cutting-edge products that integrate with state-of-the-art AI platforms, including interactive AI assistants and app integrations based on the Model Context Protocol (MCP).
We work with major global brands and industry leaders to shape the search and concierge experience for their users.

Develop, test, and maintain scalable front-end applications using modern frameworks and libraries (e.g., React).
Translate UI/UX design wireframes and prototypes into high-quality, responsive, and accessible code.
Collaborate with cross-functional teams to define, design, and ship new features.
Optimize applications for maximum speed, scalability, and performance.
Own the full frontend lifecycle from development through testing and shipping, while implementing best practices for code quality, maintainability, and comprehensive testing (unit, integration, and end-to-end).
Create transparency, collaborate better. We believe knowledge grows when it's shared. Clear, open communication builds trust and strengthens collaboration.
Build thoughtfully, create impact. We design for clarity, build for scale, and measure success through real-world impact.
In this role, you'll build elegant, highly interactive user interfaces that power AI-driven search and recommendation systems, virtual concierge services, and data-rich dashboards for analytics and visualization.
You'll collaborate closely with clients and cross-functional teams to translate user needs into beautiful, intuitive digital experiences - from concept through delivery.
Some client engagements involve deep collaboration to understand unique requirements and deliver tailored solutions, while others push the boundaries of what's possible with evolving AI ecosystems.

Bachelor's degree in Computer Science, Engineering, or related field-or equivalent practical experience.
Proficiency in HTML5, CSS3, JavaScript (ES6+).
Experience with React framework.
Experience with TypeScript.
Familiarity with testing frameworks (e.g., Playwright, Jest, Cypress).
Experience and comfort using AI Tools (CodeX, Claude Code, Copilot, etc.) to automate workflows
Experience with build tools and version control (e.g., Next, Vite, Git).
Recent Experience working on AI Applications.
Understanding of backend APIs, and RESTful services.
Understanding of responsive design principles and cross-browser compatibility.
Strong problem-solving skills and a collaborative mindset.
Bonus: Understanding of MCP and response streaming.
Pay Transparency:
The base salary range for this US full-time position is between $140,000- $200,000 and is eligible for an annual company bonus, subject to standard withholding and applicable taxes. All candidates receive equity (ISO) and access to a comprehensive benefits offering. The base salary range reflects the minimum and maximum targets for candidates. The following factors are considered when determining the compensation offered: work location, skills, experience, and any relevant education or training. The Recruiter or Hiring Manager can share more about the specific salary range with you during the recruitment process and answer any questions you have.

Competitive Base Salary + Annual Bonus
The base salary range for this US full-time position is between $140,000- $200,000 and is eligible for an annual company bonus, subject to standard withholding and applicable taxes.

Competitive Base Salary + Annual Bonus
Comprehensive Health Insurance (Medical, Dental, and Vision) for you and your family, covered mostly by the company.
Company-paid Disability and Life Insurance
Paid Parental Leave (for all types of parents and families)
Equity ownership in the company
Unlimited Paid Time Off + $1,000 Bonus for taking five consecutive days off
Tuition Reimbursement
Cell Phone & Transportation Reimbursement

Foster community, be compassionate. We show up for our teammates, customers, and neighbors. Strong businesses grow from relationships built with care and grounded in shared effort.

We are an equal opportunity employer
applicants, employees, and former employees are protected from employment discrimination and harassment of any type based on race, color, religion, sex (including pregnancy, sexual orientation, or gender identity), national origin, age, disability, protected veteran status and genetic information (including family medical history), or any other characteristic protected by federal, state or local laws.
We are an equal opportunity employer; applicants, employees, and former employees are protected from employment discrimination and harassment of any type based on race, color, religion, sex (including pregnancy, sexual orientation, or gender identity), national origin, age, disability, protected veteran status and genetic information (including family medical history), or any other characteristic protected by federal, state or local laws.

This listing is sourced directly from Mobi.AI's careers page and normalized into a canonical job model.