Senior Mobile Engineer

Jobtailor; New York (NY); On-site; USD 120,000 - 190,000; Full time

Job summary

Jobtailor is looking for an experienced iOS engineer to build mobile apps for Amex cardholders, and to lead a team of mobile engineers. You will collaborate with designers, product owners, QA, and backend teams to deliver features and ensure high quality.

In a fast-paced, small-team environment, you will rapidly iterate on ideas, fix issues, and optimize performance, while dealing with Objective‑C legacy code and contributing to CI/CD workflows in a globally distributed team.

Qualifications

• Bachelor’s degree in Computer Science or related field or equivalent experience.
• Employment eligibility to work in the United States is required.
• American Express will not pursue visa sponsorship for these positions.

Responsibilities

• Build mobile iOS applications used by tens of millions of Amex cardholders worldwide.
• Lead a team of mobile engineers.
• Develop and improve features with designers, product owners, QA, and engineers.
• Rapidly iterate on ideas in a fast-paced small-team environment.
• Find and fix bugs.
• Analyze and optimize performance.
• Deal with Objective‑C legacy code.
• Develop unit and integration tests.
• Integrate with backend services.
• Design solutions for open-ended problems.
• Work with continuous integration patterns and build tools.
• Work in a globally distributed team.

Skills

Team Leadership

Collaboration

Problem Solving

Communication

Adaptability

Education

Bachelor's degree in Computer Science or related field

Tools

UIKit

MVVM

REST APIs

RAML API Documentation

Danger

μFeatures Architecture

Swift

Objective‑C

GitHub Actions

Circle CI

Tuist

XCTest/XCUITest

Unit Testing

Integration Testing

Performance Optimization

Bug Fixing

Job description

• Build mobile iOS applications used by tens of millions of American Express cardholders worldwide
• Lead a team of mobile engineers
• Develop and improve features with designers, product owners, QA, and engineers
• Rapidly iterate on ideas in a fast-paced small-team environment
• Find and fix bugs
• Analyze and optimize performance
• Deal with Objective‑C legacy code
• Develop unit and integration tests
• Integrate with backend services
• Design solutions for open-ended problems
• Work with continuous integration patterns and build tools
• Work in a globally distributed team

Requirements

• UIKit
• MVVM
• REST APIs
• RAML API Documentation
• Danger
• μFeatures Architecture
• Swift
• Objective‑C (in decreasing quantities!)
• GitHub Actions
• Circle CI
• XCTest/XCUITest
• Tuist
• Bachelor’s degree in Computer Science or related field, or equivalent experience
• Employment eligibility to work with American Express in the United States is required
• American Express will not pursue visa sponsorship for these positions

Core Competencies

Proficient in building mobile iOS applications using Swift and Objective‑C, with a strong focus on performance optimization, unit testing, and integration with backend services. Experienced in leading teams and collaborating in a fast-paced environment to deliver high-quality software solutions.

Highest-signal resume keywords

• Swift
• Objective‑C
• UIKit
• MVVM
• REST APIs

Hard Skills

• Swift
• Objective‑C
• UIKit
• MVVM
• REST APIs
• XCTest/XCUITest
• Unit Testing
• Integration Testing
• Performance Optimization
• Bug Fixing

Soft Skills

• Team Leadership
• Collaboration
• Problem Solving
• Communication
• Adaptability

Certifications & Qualifications

• Bachelor’s Degree in Computer Science

Industry Keywords

• Mobile Development
• IOS Applications
• American Express
• API Documentation
• Globally Distributed Team

Tools & Technologies

• GitHub Actions
• Circle CI
• Tuist
• Danger
• Continuous Integration