Justin Joy

Mobile Engineer

Coventry, England, United Kingdom12 yrs 8 mos experience

Highly Stable

Key Highlights

Led mobile app development at Airbase, enhancing user engagement by 25%.
Established analytics infrastructure, improving app performance by 40%.
Transformed mobile app into a white-label product, expanding market adaptability.

Stackforce AI infers this person is a SaaS-focused Mobile Software Engineer with expertise in React Native and performance optimization.

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Skills

Core Skills

Mobile Software DevelopmentReact NativeAnalyticsPerformance Optimization

Other Skills

AJAXAWS IoTAdobe PhotoshopAlgorithmsAnalytics & Crash ReportingAndroidAndroid DevelopmentAndroid StudioBlockchainC++Cascading Style Sheets (CSS)Clean CodingClient CollaborationCode ReviewCoding Standards

About

With a decade of experience as a Software Engineer, I have developed a strong skill set in JavaScript, TypeScript, React Native and React, making me a valuable asset to any software development team. In my current role at Airbase Inc, I have been responsible for mobile app development. I have successfully delivered feature enhancements that led to a 25% increase in user engagement and app usage. Additionally, I have gained extensive experience in TypeScript and have a deep understanding of React, React Native, Redux, ReactQuery, REST APIs, Firebase, Python etc. One of my proudest accomplishments has been my involvement in building the mobile app from scratch at Airbase. As a lead developer, I have leveraged my expertise in React Native, Redux, and React Query, to design and develop key features of the app. I have also implemented a comprehensive framework for analytics and crash monitoring, ensuring the app's stability and performance. With a focus on scalability, I optimised the app to handle the rapid growth of users, enabling it to serve several thousand monthly active enterprise users. Throughout my career, I have demonstrated a strong ability to collaborate with cross-functional teams and deliver high-quality software solutions. I thrive in fast-paced environments and excel at problem-solving and finding innovative solutions to complex challenges.

Experience

12 yrs 8 mos

Total Experience

3 yrs 5 mos

Average Tenure

2 yrs 3 mos

Current Experience

Ben

Senior Mobile Engineer

Mar 2024 – Present · 2 yrs 3 mos · London Area, United Kingdom · Hybrid

Lead Mobile Engineer: As the sole dedicated mobile engineer, I lead the development of our mobile application, collaborating closely with frontend engineers to introduce innovative features.
Strategic Planning: Partnered with product management and leadership to define the mobile app roadmap and plan sprints, ensuring alignment with company goals and user needs.
White-Label Solutions: Transformed our mobile app into a white-label product, allowing for customizable client solutions and expanding our market adaptability.
Feature Delivery: Drove the release of new features and updates, enhancing app performance and reliability, which resulted in a significant boost in customer satisfaction.
Mentorship: Mentored incoming engineers, streamlining their onboarding process and promoting best practices in mobile development.
Technical Debt Management: Proactively addressed technical debt and architectural challenges, improving scalability and maintaining the app’s long-term health.
Pipeline Automation: Implemented automation in our deployment pipeline for the white-labelled app versions, reducing delivery time and improving efficiency.

Mobile Application DevelopmentFeature DeliveryTechnical Debt ManagementPipeline AutomationMobile Software DevelopmentReact Native

Airbase

Senior Software Engineer

Feb 2019 – Mar 2024 · 5 yrs 1 mo · Remote

Founding Engineer & Acquisition Success: As one of the founding engineers, played a pivotal role in building Airbase’s core products from the ground up. Contributed significantly to the company’s growth, culminating in a successful acquisition in 2024.
Lead Mobile Engineer: Led the development of Airbase’s mobile application, mentoring junior developers in React Native best practices and integrating advanced technologies like React Query for efficient state management.
Performance Optimization & Feature Development: Implemented enhancements that reduced screen load times by 90% and designed key features such as a receipt inbox and expense approvals, significantly improving user experience and workflow efficiency.
Technical Debt Management & Process Improvement: Proactively addressed technical debt and architectural challenges to ensure long-term scalability. Optimised development processes by incorporating automated testing and establishing CI/CD pipelines, reducing development cycles and enhancing release quality.
Analytics & Crash Reporting: Established comprehensive analytics and crash reporting infrastructure using tools like Firebase Analytics and Sentry. Improved product performance by up to 40% and reduced reported issues by 30%.

Mobile Application DevelopmentPerformance OptimizationTechnical Debt ManagementAnalytics & Crash ReportingReact NativeMobile Software Development

Sayone technologies

Software Engineer

Feb 2017 – May 2018 · 1 yr 3 mos · Ernakulam, Kerala, India · On-site

As an Android developer at SayOne Technologies, I played a key role in building and maintaining mobile apps for our clients. However, I saw an opportunity to increase our efficiency and profitability by introducing React Native to the team. I took the initiative to learn the technology and implemented it for client projects, resulting in a significant reduction in development time and an increase in profits for both our clients and the company.
I mentored and trained other developers on the technology and helped to establish best practices for its use. I also worked closely with clients to understand their needs and translate them into successful app development projects.
Overall, my contributions to SayOne Technologies were instrumental in driving the company's growth and success in the mobile app development space. My ability to identify opportunities for innovation and drive results has been a key asset throughout my career in software engineering.

React NativeAndroid DevelopmentClient CollaborationMobile Software Development

Freelance

Software Developer

Jan 2013 – Feb 2017 · 4 yrs 1 mo · Remote

I started my career as a freelance software developer in 2013, where I honed my skills in PHP, Java, Android, React Native, Python, and various other technologies. During this time, I worked on a diverse range of projects for clients across different industries, including e-commerce, healthcare, and education. As a result, I became responsible for every stage of the development process, from ideation and design to implementation and deployment. This experience has given me a well-rounded understanding of the software development lifecycle, allowing me to create high-quality applications that meet client needs and exceed expectations.

PHPJavaAndroid DevelopmentReact NativePython