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I'm a software engineer with 11 years of experience delivering scalable web applications using the LAMP stack, PHP, MySQL, and modern JavaScript frameworks. I specialize in building secure backend services and responsive frontends, with a focus on performance, reliability, and clean architecture. I thrive in fast-paced, collaborative teams, work across Linux and containerized environments (Docker, Kubernetes), and enjoy integrating third-party services and AI tools to streamline workflows and improve decision-making.…I'm a software engineer with 11 years of experience delivering scalable web applications using the LAMP stack, PHP, MySQL, and modern JavaScript frameworks. I specialize in building secure backend services and responsive frontends, with a focus on performance, reliability, and clean architecture. I thrive in fast-paced, collaborative teams, work across Linux and containerized environments (Docker, Kubernetes), and enjoy integrating third-party services and AI tools to streamline workflows and improve decision-making.

Cheng Liu

Full Stack Developer, Web Developer, Back-End Developer, +2

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I'm a software engineer with 11 years of experience delivering scalable web applications using the LAMP stack, PHP, MySQL, and modern JavaScript frameworks. I specialize in building secure backend services and responsive frontends, with a focus on performance, reliability, and clean architecture. I thrive in fast-paced, collaborative teams, work across Linux and containerized environments (Docker, Kubernetes), and enjoy integrating third-party services and AI tools to streamline workflows and improve decision-making.…I'm a software engineer with 11 years of experience delivering scalable web applications using the LAMP stack, PHP, MySQL, and modern JavaScript frameworks. I specialize in building secure backend services and responsive frontends, with a focus on performance, reliability, and clean architecture. I thrive in fast-paced, collaborative teams, work across Linux and containerized environments (Docker, Kubernetes), and enjoy integrating third-party services and AI tools to streamline workflows and improve decision-making.

Available to hire

I’m a software engineer with 11 years of experience delivering scalable web applications using the LAMP stack, PHP, MySQL, and modern JavaScript frameworks. I specialize in building secure backend services and responsive frontends, with a focus on performance, reliability, and clean architecture.
I thrive in fast-paced, collaborative teams, work across Linux and containerized environments (Docker, Kubernetes), and enjoy integrating third-party services and AI tools to streamline workflows and improve decision-making.

Skills

Experience Level

Expert

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Intermediate

Intermediate

Intermediate

Work Experience

Software Engineer at Microsoft

August 1, 2021 - Present

Engineered a financial loan management platform with PHP backend services and JavaScript frontend components to deliver secure, responsive, and high-performance user experiences across web browsers. Architected modular backend services following clean architecture principles and deployed containerized applications using Docker on Linux infrastructure, enabling high availability and horizontal scalability. Developed and exposed RESTful APIs supporting end-to-end loan lifecycle operations using PHP with MySQL data persistence, integrating with external financial and third-party services. Crafted responsive HTML5 and CSS3 interfaces with JavaScript and jQuery, optimizing application performance, usability, and cross-browser compatibility for enterprise users. Implemented real-time loan status updates and notifications using JavaScript WebSocket connections. Modeled and optimized MySQL databases with relational schema design, applying indexing strategies, query optimization, and transactio

Senior Software Engineer at MaxMD

October 1, 2018 - August 31, 2021

Developed and supported backend services for a healthcare operations platform using PHP and MySQL, focusing on care coordination, audit tracking, and regulatory reporting workflows with high data integrity. Architected and maintained RESTful APIs with PHP to manage clinical staff workflows, care plans, referral tracking, insurance eligibility verification, and claims lifecycle processes. Designed modular PHP services to support independent scaling of clinical analytics, audit logging, and notification systems with decoupled architecture principles. Built secure healthcare data exchange integrations to consume and process patient encounter data and care summaries from external systems using PHP API clients. Provided technical leadership and hands-on support for healthcare system implementation, ensuring conformance with regulatory standards and data interoperability requirements. Constructed event-driven processing pipelines with message queuing to handle asynchronous events such as car

Software Engineer at MaxMD

June 1, 2017 - October 31, 2018

Designed and developed backend services using PHP and MySQL, supporting secure authentication, clinical data exchange, document workflows, and mobile client integrations. Engineered the redesign of digital signature functionality, improving the accuracy and consistency of form positioning across devices, screen sizes, and document formats. Built responsive and maintainable interfaces using JavaScript, HTML5, and CSS3 to manage document preparation, signature workflows, and administrative functions with optimal user experience. Implemented real-time document interaction features using JavaScript WebSocket protocols, enabling live updates for document status and collaborative user actions. Optimized MySQL performance through stored procedures, indexing strategies, query tuning, and schema optimization to support high-volume document transactions. Secured APIs with JWT authentication and implemented role-based access control across healthcare workflows. Applied caching strategies to impro

Software Engineer at MaxMD

June 1, 2014 - July 31, 2017

Developed contract management system modules using PHP and MySQL, delivering core functionality for contract fulfillment tracking and renewal workflows. Built RESTful APIs using PHP and documented endpoints with OpenAPI specifications for the new contract system serving internal and external consumers. Designed interactive frontend components using JavaScript, HTML, and CSS with responsive design principles for contract lifecycle management. Secured APIs with JWT authentication and implemented refresh token flows for stateless session management across client applications. Deployed the system to Linux servers with Docker containerization and automated CI/CD pipelines using Jenkins for reliable, repeatable deployments. Optimized MySQL queries and stored procedures for improved performance and reduced database load during peak contract processing periods. Implemented role-based access control and permission enforcement using PHP session-based authorization for multi-tenant contract manag

Software Engineer Internship at CyberFlow Analytics

May 1, 2013 - August 31, 2013

Analyzed MIT cybersecurity datasets containing PCAP/TCPDUMP files and attack metadata to identify and correlate malicious network activities. Parsed raw network traffic data to generate normalized packet-level files, preserving protocol details, timestamps, source/destination IPs, ports, and payload metadata. Created session-level datasets by aggregating packet files into TCP/UDP flows, enabling temporal and behavioral analysis of network communications. Designed and built a Neo4j graph database, modeling network entities as nodes (IPs, sessions, attacks) and relationships to represent communication paths and attack patterns. Developed graph-based visualizations to analyze and explore relationships between IP addresses, sessions, and attack events for threat investigation. Built geospatial visualizations using Google Maps, mapping IP locations and rendering links with contextual attack and traffic information. Enabled advanced querying and analysis of network behavior by combining grap

Senior Software Engineer at MaxMD Fort Lee, NJ

October 1, 2018 - August 1, 2021

Developed and supported backend services for a healthcare operations platform with PHP and MySQL, focusing on care coordination, audit tracking, and regulatory reporting. Built RESTful APIs to manage clinical workflows, care plans, referrals, insurance eligibility verification, and claims processing. Designed modular services to scale analytics, audit logging, and notification systems with decoupled architecture. Implemented secure data exchange with external systems and built event-driven processing pipelines using message queues. Managed Red Hat Linux servers, applied security updates, and maintained production stability. Implemented automated CI/CD pipelines with Jenkins and Perforce, and created interactive dashboards using JavaScript and jQuery for real-time monitoring. Integrated AI-assisted clinical documentation tools into workflows to reduce manual data entry and improve staff efficiency.

Software Engineer at MaxMD Bermuda

October 1, 2017 - October 1, 2018

Engineered PHP/MySQL backend services supporting secure authentication, clinical data exchange, and document workflows, including mobile client integrations. Led the redesign of digital signature functionality to improve accuracy and consistency across devices. Built responsive interfaces with HTML5/JavaScript for document preparation and signature workflows, and implemented real-time document interactions via WebSocket. Optimized MySQL performance through stored procedures, indexing, and query tuning; secured APIs with JWT and role-based access control; applied caching to reduce latency. Deployed services to Linux containers with Docker and designed event-driven workflows for notifications and session management. Developed analytics dashboards to monitor user engagement and document processing metrics.

Software Engineer at MaxMD Fort Lee, NJ

June 1, 2014 - July 1, 2017

Developed contract management modules using PHP and MySQL, delivering core functionality for contract fulfillment and renewal workflows. Built RESTful APIs with OpenAPI specifications for internal and external consumption. Created interactive frontend components with JavaScript, HTML, and CSS for contract lifecycle management and secured APIs with JWT authentication and refresh tokens. Deployed to Linux servers via Docker and automated deployments with Jenkins. Optimized MySQL queries and stored procedures to handle peak processing and implemented role-based access control for multi-tenant environments.