About the Position

Published: February 28, 2026

Location: Boulder, United States of America

Job Type: Full-Time

Category: Coding & Tech Stuff

Company Overview

At Humango, we are a dynamic and rapidly growing startup at the intersection of artificial intelligence and sports coaching. With a distributed development team spanning the USA, Europe, and India, we leverage cutting-edge technology to revolutionize coaching methodologies. Our work not only drives innovation in sports training but also addresses societal needs on a global scale.

Position Overview

We are seeking skilled Senior Frontend Developers with expertise in Flutter, with a focus on Apple HealthKit, Google Fit, and payment system integration. As part of our innovative team, you will play a crucial role in designing and implementing user-friendly interfaces for our AI coaching platform. Your responsibilities will include collaborating with backend developers, UI/UX designers, and product managers to deliver seamless experiences for athletes and coaches, including secure payment solutions.

Responsibilities

Establish and drive initiatives to ensure a high-quality and consistent product across all target environments. This includes unit testing, integration testing, UI testing, CI/CD, coaching junior team members, and continuously looking for opportunities to multiply your impact.
Develop and maintain responsive and intuitive user interfaces for web and mobile applications using Flutter, ensuring cross-platform compatibility and optimal performance on iOS and Android devices.
Collaborate with UI/UX designers to translate wireframes and design mockups into polished and engaging user interfaces, incorporating animations, transitions, and interactive elements to enhance user experience.
Extend the application integration with various fitness systems using Bluetooth FTMS or with Apple Health/Google Fit.
Enhance payment processing functionality, integrating third-party payment gateways and APIs (e.g., Stripe, Apple Store, Google Play) to facilitate secure and seamless transactions within our applications.
Optimize frontend code for performance, scalability, and maintainability, leveraging best practices and design patterns to ensure code quality and reusability across projects.
Conduct thorough testing of frontend components and features, including unit tests, integration tests, and end-to-end tests, to identify and resolve bugs and ensure software reliability.
Stay updated on the latest trends and advancements in frontend development, actively contributing to the evolution of our technology stack and development practices.
Collaborate closely with cross-functional teams, including backend developers, QA engineers, and product managers, to plan and prioritize features, sprint goals, and deliverables in an Agile development environment.

Requirements

Bachelor's or Master's degree in Computer Science, Software Engineering, or a related field.
Proficiency in frontend development with Flutter for both Mobile and Web, with demonstrable experience building and shipping production-quality web and mobile applications.
Strong knowledge of iOS app development using Flutter, with experience deploying apps to the App Store and familiarity with Apple's Human Interface Guidelines (HIG).
Strong knowledge of Android app development using Flutter, with experience deploying apps to the Google Play store.
Very good experience integrating via Bluetooth FTMS and with Apple Health/Google Fit.
Experience integrating payment processing functionality into web and mobile applications, using payment gateways such as Stripe, Google Play, or Apple Pay.
Familiarity with state management libraries/frameworks such as Provider (for Flutter) to manage application state and data flow.
Solid understanding of modern web technologies, including HTML5, CSS3, JavaScript/TypeScript, and responsive design principles.
Experience with version control systems (e.g., Git), code review processes, and continuous integration/continuous deployment (CI/CD) pipelines.
Excellent problem-solving skills, attention to detail, continuous improvement drive, and ability to collaborate effectively in a distributed team environment.
An understanding of the Sports Coaching domain is a plus.

We Offer

Competitive salary
Opportunity to work in a dynamic and innovative environment
Collaborative and inclusive team culture
Professional development opportunities

About the Company

At Humango, we are committed to leveraging cutting-edge technology to revolutionize sports coaching methodologies. Our distributed team spans the USA, Europe, and India, working together to create innovative solutions that address global societal needs.

Senior Front-end developer

Job description