Top Talent like Leon are on Pangea

Pangea, a YC company, connects companies with fractional talent. Fractional hiring allows companies to move faster and work with more specilaized talent, while giving talent more flexibilty and independence. If you are talent open to fractional work, apply here. If you’re a company looking for high-quality fractional talent, learn more here.
Recently Active

Leon Li

Full-stack Engineer • Frontend Developer • Backend Engineer • Katy, TX, US
Top Earner
Full Stack Development
Front-End Development
Backend Development
Web Development
Mobile App Development
Project Management
React
React Native
Next.js
Node.js
Express.js
TypeScript
Tailwind CSS
Flutter
MongoDB
PostgreSQL
Firebase
AWS Amplify
Vue.js
Python
Shopify
Redux
Microservices
Apache Kafka
Web3
TDD
CI/CD
Git
Amazon Web Services
Available for hire fromNegotiable
Full-Time Roles
Contracts
Full Stack Developer & Project Manager & Startup Tech Lead
Experienced Full Stack Engineer with a knack for crafting MVPs and innovative software solutions. Dedicated to long-term success, leverage the latest technologies and frameworks to drive projects forward. Exceptional team player with a talent for tackling complex technical challenges. Proficient in Test-Driven Development (TDD) and passionate about mentoring others. Consistently delivers phenomenal results while staying ahead of the curve through rapid learning and continuous self-improvement. Has rich experience working directly with clients across various industries and deep understanding of successful development processes. Partner with me to bring your project to success!

Projects

Bench Accounting

Bench Accounting is an online bookkeeping platform for small businesses. Bench Accounting provides simple, elegant software to track business financials and a team of bookkeepers to make sure the books are always perfect and tax-ready. Every month, the Bench bookkeeping team reviews the books and turns business data into tax-ready financial statements. Users can monitor the business’s financial health, download financial statements, and chat with the Bench bookkeeping team any time via the Bench app.See More

BIGContacts

BIGContacts by ProProfs is a CRM, email, and contact management solution for small businesses. It has a simple design so teams can grow their business and increase sales with user-friendly software. BIGContacts enables companies to manage prospects and customer relationships by keeping track of all contacts, calendars, and tasks in one platform. Additionally, this CRM software allows teams to automatically send personalized emails from individual sales reps based on where the prospect is in the sales cycle. Users can also view all current sales activities for all team members and drill down to specific contacts that make up the total sales funnel. With BIGContacts, businesses can nurture sales leads, create campaigns, and manage reports. Its contact management feature lets teams organize, sort, and view contacts by pending or upcoming activity, opportunity, last contact, or last communication.See More

DrChrono

Serving tens of thousands of physicians and over 17 million patients, DrChrono by EverHealth was the first EHR to build a native app for the iPad and iPhone. We’re the only official Apple Mobility Partner for healthcare, the youngest company to be included in the US Government Precision Medicine Initiative, the #1 EHR as voted by doctors, and the #1 mobile EHR as voted by Black Book. Our products can be completely tailored to any medical practice—small, large, enterprise, or specialty—and are open to third-party innovation via a robust API.See More

TALKPAL AI

TalkPal is a GPT-powered AI language tutor. Chat about unlimited amount of interesting topics either by writing or speaking while receiving messages with realistic voice.See More

Work History

T

Full Stack Developer (Remote)

TechmedicsApr 2020 - Dec 2023 • 3 yrs 9 mosContributed to the success of an enterprise-level financial services platform, serving over 100k+ users, through valuable contributions to the development and optimization of software solutions. - Led the development of a robust back-end system using Java, impacting the platform's performance and responsiveness. - Optimized PostgreSQL database structures and queries, resulting in a 30% reduction in system latency and enhancing data retrieval efficiency. - Implemented strategic caching mechanisms, reducing load times by 25% for critical functions and improving overall user experience. - Managed and maintained API endpoints, implementing robust error handling, optimizing performance, and ensuring secure data transmission to enhance system reliability and scalability. Played a key role in the success of a real-time collaboration platform, actively participating in its development and optimization to meet the needs of a substantial user base exceeding 10k+ individuals. - Directed the development of responsive and intuitive front-end interfaces using React.js. - Executed and built back-end functionalities using Node.js and NestJS, contributing to the platform's robust architecture and scalability to accommodate a 50% growing user demands. - Successfully integrated third-party APIs and services like Twilio, Agora, and Google Cloud TTS, expanding the platform's functionality and providing users with a comprehensive suite of collaboration tools. - Identified and addressed performance bottlenecks, resulting in a 15% increase in overall system efficiency and responsiveness. - Established a robust CI/CD pipeline on AWS, incorporating Docker images and optimizing a GitHub workflow, leading to a significant 30% improvement in development speed and efficiency.
A

Full Stack Developer (Remote)

AzumoDec 2018 - Mar 2020 • 1 yr 4 mosLed the development of a healthcare information system as the lead full-stack developer, contributing to a 20% increase in system efficiency. - Achieved a 15% increase in query efficiency by optimizing GraphQL schemas and utilizing batched requests. - Engineered a secure and scalable RESTful API for the healthcare information system using Node.js, ensuring efficient communication between the front-end and back-end components. - Implemented cron jobs in Express.js for scheduled tasks, such as data backups and routine system maintenance, contributing to a 15% improvement in system reliability. - Executed interactive data visualizations using React components, enhancing the representation of healthcare data and facilitating a 50% better understanding for end-users. - Integrated Redux for complex state management scenarios, contributing to a 40% decrease in application bugs related to state inconsistencies. - Boosted UI responsiveness by utilizing useQuery with cached queries for efficient patient data fetching, complemented by useMutation to streamline data mutations and ensure a significant improvement in overall application performance.
A

Full Stack Developer (Remote)

AzumoNov 2017 - Dec 2018 • 1 yr 2 mosPioneered the development and implementation of a cutting-edge Language Learning Chatbot, leveraging Python-based AI algorithms to create an interactive and personalized language learning experience for users, attracting and engaging over 10k+ learners globally. - Applied AI-based speech recognition in Python for accurate pronunciation evaluation during language exercises, providing instant feedback to users for improved spoken language skills. - Incorporated external language APIs seamlessly into Django, enriching language data sources and providing users with diverse and up-to-date language content for learning purposes. - Designed a responsive layout using Tailwind CSS, allowing the Chatbot to adapt seamlessly to various screen sizes and devices for a consistent user experience. - Utilized Next.js Server-Side Rendering to optimize the performance of the front-end, achieving a 20% reduction in page load times, ensuring swift content delivery and improving SEO rankings by generating responsive pages on the server, resulting in a seamless and responsive user experience. - Conducted thorough 200 code reviews, designed best practices with TypeScript, and employed unit testing using Jest, Mocha, and Chai, ensuring comprehensive test coverage and elevating the overall quality, maintainability, and reliability of the codebase.
U

Frontend Web Developer (Remote)

UpworkSep 2016 - Nov 2017 • 1 yr 3 mos- Showcased expertise in front-end technologies, building over 100+ responsive, pixel-perfect landing pages for 20 clients with React.js, Html, Bootstrap, and TypeScript. - Enacted OAuth2 authentication and authorization flows in the Node.js-based e-commerce site backend, utilizing JWT tokens for secure and stateless user sessions. - Utilized JSP's support for JavaBeans in conjunction with MySQL, facilitating efficient data handling and processing for a seamless user experience. - Delivered 5 prototyping websites for both companies and clients, utilizing React.js, Material UI, and Styled Components. - Advanced proficiency in back-end technologies, mastering Java, Node.js, and Microservices.
Reviews
Exceeds Expectations
Exceeds ExpectationsRecommended by clients 1 times.
Exceeds Expectations
Top EarnerHas earned $5k+ on Pangea.

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.

Education

T

The University of Texas at Dallas

Bachelor's Degree, Computer Software EngineeringApr 2012 - Aug 2016

How Pangea Works

Effortlessly discover top talent

We’ve distilled the candidate search from endless hours down to just a few minutes. Using Pangea’s AI-powered search tools, you can find top fractional talent able to take on your next project. Our system looks at your company’s niche and your needs to find the perfect match faster than any traditional hiring platform.

Start working with talent today

The top talent on Pangea is ready to get started with you right now. You can message or hire a candidate right from their profile page and start assigning work as soon as they respond. And the best part? Pangea’s fractional contract structure lets you start small and ramp up as your needs change, keeping your costs manageable and your team’s capabliities flexible.

Track work and invoices in one place

Assign tasks, track progress, and complete invoices all on Pangea. We’ve combined every part of the hiring process into one platform to eliminate the miscommunication that’s unavoidable on other freelance platforms. We even send out 1099s to your contractors at the end of the year!

Talk with a Talent Expert

Members of our team are available to help you speed through the hiring process.
Available Now
Book a Call
Recently Active
Full Stack Developer & Project Manager & Startup Tech Lead
Experienced Full Stack Engineer with a knack for crafting MVPs and innovative software solutions. Dedicated to long-term success, leverage the latest technologies and frameworks to drive projects forward. Exceptional team player with a talent for tackling complex technical challenges. Proficient in Test-Driven Development (TDD) and passionate about mentoring others. Consistently delivers phenomenal results while staying ahead of the curve through rapid learning and continuous self-improvement. Has rich experience working directly with clients across various industries and deep understanding of successful development processes. Partner with me to bring your project to success!

Talk with a Talent Expert

Members of our team are available to help you speed through the hiring process.
Available Now
Book a Call

Top Talent like Leon are on Pangea

Pangea, a YC company, connects companies with fractional talent. Fractional hiring allows companies to move faster and work with more specilaized talent, while giving talent more flexibilty and independence. If you are talent open to fractional work, apply here. If you’re a company looking for high-quality fractional talent, learn more here.

Leon Li

Full-stack Engineer • Frontend Developer • Backend Engineer • Katy, TX, US
Top Earner
Full Stack Development
Front-End Development
Backend Development
Web Development
Mobile App Development
Project Management
React
React Native
Next.js
Node.js
Express.js
TypeScript
Tailwind CSS
Flutter
MongoDB
PostgreSQL
Firebase
AWS Amplify
Vue.js
Python
Shopify
Redux
Microservices
Apache Kafka
Web3
TDD
CI/CD
Git
Amazon Web Services
Available for hire fromNegotiable
Full-Time Roles
Contracts

Projects

Bench Accounting

Bench Accounting is an online bookkeeping platform for small businesses. Bench Accounting provides simple, elegant software to track business financials and a team of bookkeepers to make sure the books are always perfect and tax-ready. Every month, the Bench bookkeeping team reviews the books and turns business data into tax-ready financial statements. Users can monitor the business’s financial health, download financial statements, and chat with the Bench bookkeeping team any time via the Bench app.

BIGContacts

BIGContacts by ProProfs is a CRM, email, and contact management solution for small businesses. It has a simple design so teams can grow their business and increase sales with user-friendly software. BIGContacts enables companies to manage prospects and customer relationships by keeping track of all contacts, calendars, and tasks in one platform. Additionally, this CRM software allows teams to automatically send personalized emails from individual sales reps based on where the prospect is in the sales cycle. Users can also view all current sales activities for all team members and drill down to specific contacts that make up the total sales funnel. With BIGContacts, businesses can nurture sales leads, create campaigns, and manage reports. Its contact management feature lets teams organize, sort, and view contacts by pending or upcoming activity, opportunity, last contact, or last communication.

DrChrono

Serving tens of thousands of physicians and over 17 million patients, DrChrono by EverHealth was the first EHR to build a native app for the iPad and iPhone. We’re the only official Apple Mobility Partner for healthcare, the youngest company to be included in the US Government Precision Medicine Initiative, the #1 EHR as voted by doctors, and the #1 mobile EHR as voted by Black Book. Our products can be completely tailored to any medical practice—small, large, enterprise, or specialty—and are open to third-party innovation via a robust API.

TALKPAL AI

TalkPal is a GPT-powered AI language tutor. Chat about unlimited amount of interesting topics either by writing or speaking while receiving messages with realistic voice.

Work History

T

Full Stack Developer (Remote)

TechmedicsApr 2020 - Dec 2023 • 3 yrs 9 mosContributed to the success of an enterprise-level financial services platform, serving over 100k+ users, through valuable contributions to the development and optimization of software solutions. - Led the development of a robust back-end system using Java, impacting the platform's performance and responsiveness. - Optimized PostgreSQL database structures and queries, resulting in a 30% reduction in system latency and enhancing data retrieval efficiency. - Implemented strategic caching mechanisms, reducing load times by 25% for critical functions and improving overall user experience. - Managed and maintained API endpoints, implementing robust error handling, optimizing performance, and ensuring secure data transmission to enhance system reliability and scalability. Played a key role in the success of a real-time collaboration platform, actively participating in its development and optimization to meet the needs of a substantial user base exceeding 10k+ individuals. - Directed the development of responsive and intuitive front-end interfaces using React.js. - Executed and built back-end functionalities using Node.js and NestJS, contributing to the platform's robust architecture and scalability to accommodate a 50% growing user demands. - Successfully integrated third-party APIs and services like Twilio, Agora, and Google Cloud TTS, expanding the platform's functionality and providing users with a comprehensive suite of collaboration tools. - Identified and addressed performance bottlenecks, resulting in a 15% increase in overall system efficiency and responsiveness. - Established a robust CI/CD pipeline on AWS, incorporating Docker images and optimizing a GitHub workflow, leading to a significant 30% improvement in development speed and efficiency.
A

Full Stack Developer (Remote)

AzumoDec 2018 - Mar 2020 • 1 yr 4 mosLed the development of a healthcare information system as the lead full-stack developer, contributing to a 20% increase in system efficiency. - Achieved a 15% increase in query efficiency by optimizing GraphQL schemas and utilizing batched requests. - Engineered a secure and scalable RESTful API for the healthcare information system using Node.js, ensuring efficient communication between the front-end and back-end components. - Implemented cron jobs in Express.js for scheduled tasks, such as data backups and routine system maintenance, contributing to a 15% improvement in system reliability. - Executed interactive data visualizations using React components, enhancing the representation of healthcare data and facilitating a 50% better understanding for end-users. - Integrated Redux for complex state management scenarios, contributing to a 40% decrease in application bugs related to state inconsistencies. - Boosted UI responsiveness by utilizing useQuery with cached queries for efficient patient data fetching, complemented by useMutation to streamline data mutations and ensure a significant improvement in overall application performance.
A

Full Stack Developer (Remote)

AzumoNov 2017 - Dec 2018 • 1 yr 2 mosPioneered the development and implementation of a cutting-edge Language Learning Chatbot, leveraging Python-based AI algorithms to create an interactive and personalized language learning experience for users, attracting and engaging over 10k+ learners globally. - Applied AI-based speech recognition in Python for accurate pronunciation evaluation during language exercises, providing instant feedback to users for improved spoken language skills. - Incorporated external language APIs seamlessly into Django, enriching language data sources and providing users with diverse and up-to-date language content for learning purposes. - Designed a responsive layout using Tailwind CSS, allowing the Chatbot to adapt seamlessly to various screen sizes and devices for a consistent user experience. - Utilized Next.js Server-Side Rendering to optimize the performance of the front-end, achieving a 20% reduction in page load times, ensuring swift content delivery and improving SEO rankings by generating responsive pages on the server, resulting in a seamless and responsive user experience. - Conducted thorough 200 code reviews, designed best practices with TypeScript, and employed unit testing using Jest, Mocha, and Chai, ensuring comprehensive test coverage and elevating the overall quality, maintainability, and reliability of the codebase.
U

Frontend Web Developer (Remote)

UpworkSep 2016 - Nov 2017 • 1 yr 3 mos- Showcased expertise in front-end technologies, building over 100+ responsive, pixel-perfect landing pages for 20 clients with React.js, Html, Bootstrap, and TypeScript. - Enacted OAuth2 authentication and authorization flows in the Node.js-based e-commerce site backend, utilizing JWT tokens for secure and stateless user sessions. - Utilized JSP's support for JavaBeans in conjunction with MySQL, facilitating efficient data handling and processing for a seamless user experience. - Delivered 5 prototyping websites for both companies and clients, utilizing React.js, Material UI, and Styled Components. - Advanced proficiency in back-end technologies, mastering Java, Node.js, and Microservices.
Reviews
Exceeds Expectations
Exceeds ExpectationsRecommended by clients 1 times.
Exceeds Expectations
Top EarnerHas earned $5k+ on Pangea.

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.

Education

T

The University of Texas at Dallas

Bachelor's Degree, Computer Software EngineeringApr 2012 - Aug 2016

How Pangea Works

Effortlessly discover top talent

We’ve distilled the candidate search from endless hours down to just a few minutes. Using Pangea’s AI-powered search tools, you can find top fractional talent able to take on your next project. Our system looks at your company’s niche and your needs to find the perfect match faster than any traditional hiring platform.

Start working with talent today

The top talent on Pangea is ready to get started with you right now. You can message or hire a candidate right from their profile page and start assigning work as soon as they respond. And the best part? Pangea’s fractional contract structure lets you start small and ramp up as your needs change, keeping your costs manageable and your team’s capabliities flexible.

Track work and invoices in one place

Assign tasks, track progress, and complete invoices all on Pangea. We’ve combined every part of the hiring process into one platform to eliminate the miscommunication that’s unavoidable on other freelance platforms. We even send out 1099s to your contractors at the end of the year!

Talk with a Talent Expert

Members of our team are available to help you speed through the hiring process.
Available Now
Book a Call
Pangea empowers fractional work across the world for marketing and design roles.