Mubarak is available for hire
Hire MubarakMubarak Awal
Verified Expert in Engineering
Full-stack Developer
Berlin, Germany
Toptal member since October 17, 2022
Bio
Mubarak is a senior full-stack developer with over nine years of experience. He is a big fan of using AI to improve the quality and speed of product delivery. He has extensive knowledge in the gaming, education, and tech recruitment industries. Mubarak is a keen problem solver with experience building and managing mission-critical enterprise-level applications and startup projects.
Portfolio
eGym
Java, Go, JavaScript, React, Spring, Node.js, APIs, Spring Boot, MySQL...
VoiceOps
Node.js, TypeScript, Amazon Web Services (AWS), PostgreSQL, AWS Lambda...
Teddy Lubin
Node.js, React Native, iOS, Swift, TypeScript, AI Model Integration, Codex...
Experience
- JavaScript - 10 years
- React Native - 9 years
- TypeScript - 9 years
- Node.js - 9 years
- React - 9 years
- Laravel - 8 years
- PHP - 8 years
- Java - 5 years
Preferred Environment
Node.js, React, TypeScript, JavaScript, Java, Vibe Coding
The most amazing...
...project I've worked on involved building and managing a fund-sourcing app for schools and libraries in the US.
Work Experience
Software Engineer
2023 - PRESENT
eGym
- Built and owned the entire front end single-handedly of a major feature that generated millions of dollars in revenue.
- Worked on enhancements and internal tooling in collaboration with other software engineers and product managers, incorporating feedback from the support and operations teams.
- Created a highly scalable endpoint with low latency, processing 20+ requests per second.
Technologies: Java, Go, JavaScript, React, Spring, Node.js, APIs, Spring Boot, MySQL, PostgreSQL, Express.js, HTML, CSS, Architecture, Back-end Development, Full-stack Development, Databases, Integration, MongoDB, AI Tools, Full-stack, OpenAI, Kubernetes, GraphQL, Back-end, Software Architecture, Solution Architecture, System Architecture, Front-end, Google Cloud Platform (GCP), Large Language Models (LLMs), Artificial Intelligence (AI), Web Development, Microservices, OpenCV, Agentic Coding, Vibe Coding, Authentication, Email Authentication, SQLite, User Authentication, Codex, ChatGPT, Object-oriented Design (OOD), AI Engineering, Agentic AI, CI/CD Pipelines, Claude Code
Back-end Engineer
2025 - 2026
VoiceOps
- Led the integration of new platforms with AI into the VoiceOps platform.
- Improved stability of all external platform integrations and added extensive monitoring for all client integrations.
- Handled client communications, acting as first-level support for everything integration-related.
- Used Claude code and Codex to quickly fix bugs and release new features.
Technologies: Node.js, TypeScript, Amazon Web Services (AWS), PostgreSQL, AWS Lambda, AWS Step Functions, React, AI Tools, Claude Code, Claude, Codex, ChatGPT, Claude API, OpenAI, LLM Integration, Back-end, Software Architecture, Solution Architecture, System Architecture, Large Language Models (LLMs), Artificial Intelligence (AI), Next.js, Web Development, Microservices, OpenCV, Vibe Coding, Authentication, Email Authentication, SQLite, User Authentication, Object-oriented Design (OOD), Agentic Coding, AI Engineering, Agentic AI, CI/CD Pipelines, WebSockets
Full-stack Node.js + React Native Developer
2025 - 2025
Teddy Lubin
- Took full ownership of the full product from the mobile app to the back end, AWS platform, and App Store/Play Store publishing.
- Integrated AI computer vision into the app to help detect golf swing start and speed.
- Used Claude code and Codex to quickly iterate through client ideas to help the client make informed design decisions.
Technologies: Node.js, React Native, iOS, Swift, TypeScript, AI Model Integration, Codex, Claude, Computer Vision, Amazon Web Services (AWS), ECS, App Store Connect, Google Play Store, Back-end, Software Architecture, Solution Architecture, System Architecture, Front-end, Python, Large Language Models (LLMs), Artificial Intelligence (AI), Web Development, Microservices, OpenCV, Expo, Mobile Development, Vibe Coding, Authentication, Email Authentication, User Authentication, iOS Authentication, AI Tools, ChatGPT, Agentic Coding, AI Engineering, Agentic AI, CI/CD Pipelines, Claude Code
Senior Full-stack Developer
2021 - 2023
Big Viking Games
- Rebuilt game functionalities to improve performance by over 60%. Reduced load times from 21 seconds to less than seven seconds.
- Managed a distributed team of six engineers to meet OKRs and improve game health and uptime to 99.99%.
- Responded to emergent issues affecting the game. Supported new feature releases to increase company revenue by 30%.
Technologies: TypeScript, JavaScript, Java, PHP, React, Node.js, Linux, Sass, APIs, Spring Boot, MySQL, PostgreSQL, Express.js, HTML, CSS, Architecture, Back-end Development, Full-stack Development, Databases, Integration, MongoDB, Full-stack, Kubernetes, GraphQL, AWS Lambda, AWS Step Functions, Back-end, Software Architecture, Solution Architecture, System Architecture, Front-end, Next.js, Web Development, Microservices, NestJS, Authentication, Email Authentication, SQLite, User Authentication, Object-oriented Design (OOD), CI/CD Pipelines, WebSockets
Coding Boot Camp Instructor
2016 - 2021
Codetrain
- Trained and coached 400+ software engineers (mobile and web) in a boot camp, ultimately landing some students jobs in companies like Microsoft.
- Reviewed and debugged over 10+ student projects (mobile apps and web apps) every week, giving feedback on code optimization and helping with code debugging.
- Learned new coding stack quickly to train new students based on market demand and curriculum, e.g., changed stack from Laravel (back end) and Native Android (mobile) to React, React Native, and Node.js in a week.
Technologies: PHP, Python, Java, JavaScript, TypeScript, Android Studio, Xcode, Laravel, Node.js, Firebase, React, React Native, PostgreSQL, Docker, APIs, MySQL, HTML, CSS, Back-end Development, Full-stack Development, Databases, Integration, iOS, Full-stack, Minimum Viable Product (MVP), Android, Kubernetes, GraphQL, Back-end, Software Architecture, Solution Architecture, System Architecture, Front-end, Web Development, Microservices, eCommerce, Google Play Store, Expo, Mobile Development, NestJS, Authentication, Email Authentication, User Authentication, iOS Authentication, CI/CD Pipelines, WebSockets
Senior Software Engineer
2016 - 2021
Codetrain
- Served as a back-end engineer on multiple projects. Collaborated with front-end engineers and built scalable RESTful services endpoints for mobile and web applications.
- Collaborated with a team of designers and engineers to build a stunning pixel perfect UI for mobile and web apps with a great user experience.
- Wrote simple, easy to read, clean, and easily maintainable code with over 90% of test coverage. Included type, unit, integrated, and end-to-end tests for both mobile and back-end applications.
Technologies: TypeScript, Node.js, React, JavaScript, PHP, Laravel, Java, HTML, CSS3, Bootstrap, APIs, MySQL, Express.js, CSS, Architecture, Back-end Development, Full-stack Development, Databases, Integration, MongoDB, Swift, iOS, Full-stack, Minimum Viable Product (MVP), Android, Kubernetes, AWS Lambda, AWS Step Functions, Supabase, Back-end, Software Architecture, Solution Architecture, System Architecture, Front-end, Python, Google Cloud Platform (GCP), Next.js, Web Development, Microservices, eCommerce, Google Play Store, Expo, Mobile Development, NestJS, Authentication, Email Authentication, SQLite, User Authentication, iOS Authentication, Object-oriented Design (OOD), CI/CD Pipelines, WebSockets
Experience
Eratesync - Files Retention App
Served as a lead back-end engineer (PHP, Laravel, AWS) to build and deploy a mission critical web-based enterprise application. I helped libraries and schools in the United States get funding from the US government.
Beset - Mastermind Groups App
Served as the lead mobile engineer (React Native, TypeScript, JavaScript) to plan, design, and build a cross platform mobile app. I helped mastermind group facilitators and members create groups, schedule, and run meetings easily.
Goalgum - Goalsetter App
A React Native-based cross-platform mobile application with over 1,000 active users. I worked as the lead React Native engineer on this project, shaping the vision of the project, working with designers, and building a highly scalable mobile app while managing other engineers. The back end of this app is built with Firebase.
Certifications
SEPTEMBER 2016 - PRESENT
Software Developer Certificate
Sleekjob
JANUARY 2016 - PRESENT
Sales Management
Alison
Skills
Libraries/APIs
Node.js, React, OpenCV, Claude API
Tools
Claude Code, Claude, Codex, ChatGPT, Expo, AWS Step Functions, Android Studio, Xcode
Languages
TypeScript, JavaScript, PHP, Java, HTML, CSS3, Swift, CSS, Python, GraphQL, Go, Sass
Frameworks
Laravel, React Native, Spring Boot, Express.js, Next.js, NestJS, Bootstrap, Spring, CodeIgniter
Paradigms
Microservices, Mobile Development, Object-oriented Design (OOD), Agile
Platforms
Firebase, iOS, Android, Kubernetes, Google Cloud Platform (GCP), Amazon Web Services (AWS), Docker, AWS Lambda, Linux
Storage
MySQL, Databases, MongoDB, SQLite, PostgreSQL
Other
APIs, Back-end Development, Full-stack Development, Integration, AI Tools, Full-stack, Minimum Viable Product (MVP), OpenAI, Google Play Store, Supabase, Back-end, Software Architecture, Solution Architecture, System Architecture, Front-end, Large Language Models (LLMs), Artificial Intelligence (AI), Web Development, eCommerce, Vibe Coding, Agentic Coding, Authentication, Email Authentication, User Authentication, iOS Authentication, AI Engineering, Agentic AI, CI/CD Pipelines, WebSockets, Architecture, LLM Integration, Business, Planning, Organization, WatermelonDB, AI Model Integration, Computer Vision, ECS, App Store Connect
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