Senior Full Stack Engineer — AI Travel Platforms (Equity + Unlimited PTO)

Mobi; Somerville, Northern (MA, KY); Hybrid; USD 150,000 - 190,000; Full time

Benefits offered by this job

Base salary + annual bonus

Health Insurance (medical, dental, and

Vision coverage

Job summary

Mobi is seeking a Senior Full Stack Engineer to design and build AI-powered web experiences for global travel brands. You will shape architectures and implement scalable APIs, collaborating with product, design, and other engineers to deliver reliable, high-performance solutions for travelers.

You will own both frontend and backend components, contributing across the stack from product interfaces to APIs and infrastructure, with scope for influence across the travel AI portfolio.

Qualifications

• Bachelor's degree in Computer Science, Engineering, or related field.
• Proficiency in Python.
• Familiarity with testing frameworks (Jest, Cypress, Playwright).
• Proficiency with backend APIs and RESTful services.
• Experience with AWS compute and storage services (Lambda, DynamoDB).
• Experience with AI Tools to automate workflows.
• Strong problem-solving skills and a collaborative mindset.
• Understanding of MCP and Agent frameworks.

Responsibilities

• Develop, test, and maintain scalable MCP and agent applications using modern frameworks and libraries.
• Build, maintain, and optimize APIs and infrastructure.
• Collaborate with cross-functional teams to define, design, and ship new features.
• Optimize applications for maximum speed, scalability, and performance.
• Review code to troubleshoot, debug, and resolve issues; Implement best practices for code quality, testing, and maintainability.
• Follow best practices for testing and evaluation of agent applications, including unit, integration, and end-to-end testing.
• Stay current with trends, tools, and emerging technologies in the field of computer science and artificial intelligence.

Skills

Python

Testing frameworks

Backend APIs

AWS services

AI tools

MCP & Agent frameworks

Problem solving

Education

Bachelor's degree in CS/Engineering

Tools

Jest

Cypress

Playwright

AWS Lambda

DynamoDB

Job description

Mobi is seeking a Senior Full Stack Engineer to design and build AI-powered web experiences for global travel brands. You will shape architectures and implement scalable APIs, collaborating with product, design, and other engineers to deliver reliable, high-performance solutions for travelers.

You will own both frontend and backend components, contributing across the stack from product interfaces to APIs and infrastructure, with scope for influence across the travel AI portfolio.