Cong D.-Software Engineer
Check rate
Experience
Software Engineer
PointClickCare
- Developed and maintained full stack features for a healthcare SaaS platform using Java, Spring, JSP, JavaScript/TypeScript, React, Azure, and SQL Server, delivering robust solutions across the stack.
- Optimised SQL Server queries which reduced query execution time by 70%.
- Performed proactive monitoring and incident response using AppDynamics and Kibana.
- Optimized development productivity by using GitHub Copilot/Claude Code to decrease implementation time and enhance code consistency.
Software Developer
OpenText
- Developed and maintained system functionality for the Content Management System using Java Spring Boot, JavaScript, TypeScript, React, Marionette, jQuery, Backbone.js, Kubernetes, Docker, and Google Cloud.
- Collaborated with another developer to design and develop a new notification service within a microservice architecture, utilizing Java/Spring Boot, Redis, RabbitMQ, and PostgreSQL.
- Developed in-app and email notification systems for a Content Management Application using Java Spring Boot, JavaScript, and Backbone.js.
Software Engineer
Sandvine Corporation
- Designed and implemented a comprehensive dashboard solution using TypeScript, JavaScript, React, and Redux, empowering customers to enhance application and network Quality of Experience (QoE) by providing real-time insights and network visibility.
- Developed high-performance REST APIs using Node.js, Go, Docker, and Java/Spring Boot, enabling seamless communication between the dashboard and backend systems.
- Developed a Python-based tool and leveraged Jenkins to automate and schedule daily data exports from the Vertica database, eliminating the need for manual exports.
- Developed integration testing with TestCafe that reduced times required for UI tests by 20% when releasing new features.
- Implemented a high-performance pre-caching algorithm with Redis in Java/Spring Boot, resulting in a significant decrease of 75% in API response time.
Software Developer
Netwila Application Corporation
- Developed RESTful web APIs with TypeScript, NestJS, and MongoDB to enhance frontend consumption.
- Designed and implemented a dashboard for supply chain management using JavaScript, React, and Redux.
- Utilized pagination and optimized UI rendering logic to reduce web application load times by 50%.
Java Developer
mgm technology partners GmbH
- Designed RESTful web APIs with Java/Spring Boot to improve the speed of loading by twice.
- Improved fetching received mails from the mail server to the application by using cache and watcher.
- Improved test coverage by 10% with new unit tests.
Software Developer
VieGrid JSC
- Developed tools with Python to crawl data to create datasets for the data team.
- Enhanced the time image processing by 15% with OpenCV and C/C++.
- Reduced the labeling images time by 50% for the data team by creating the image annotation tool in Qt C++.
Industry experience
See where this freelancer has spent most of their professional time.
Experienced in Information Technology, Telecommunication, Healthcare, and Transportation.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Information Technology, Product Development, Quality Assurance, and Supply Chain Management.
Summary
I have over 7 years of experience in developing robust full stack solutions and optimizing application performance in various industries such as healthcare, content management, and network monitoring. My work spans across Java, JavaScript, TypeScript, Python, and C/C++, using frameworks and tools like Spring Boot, React, Docker, Kubernetes, and Redis to build efficient systems. I am passionate about reducing processing times and enhancing code quality, which has led to significant improvements in API response, query execution, and overall productivity.
I continuously strive to simplify complex processes by automating tasks and refining both frontend and backend functionalities. By focusing on practical solutions and measurable performance enhancements, I ensure the delivery of reliable and scalable software that meets diverse project needs.
Languages
Education
Conestoga College
Post Graduate · Mobile Solutions Development · Waterloo, Canada
University of Sciences, Hue University
Bachelor of Science · Software Engineering · Viet Nam
Statistics
Experience
Global experience
Expertise
Qualifications
Profile
Frequently asked questions
Have questions? Find more information here.
Cong is based in Toronto, Canada and prefers 100% remote projects.
Cong speaks the following languages: Vietnamese (Native), English (Advanced).
Cong has at least 7 years of experience. During this time, Cong has worked in at least 3 different roles and for 6 different companies. The average length of individual experience is 1 year and 2 months. Note that Cong may not have shared all experience and actually has more experience.
Based on recent experience, Cong would be well-suited for roles such as: Software Engineer, Software Developer, Java Developer.
Cong's most recent position is Software Engineer at PointClickCare.
In recent years, Cong has worked for PointClickCare, OpenText, and Sandvine Corporation.
Cong is most experienced in industries like Information Technology, Telecommunication, and Healthcare. Cong also has some experience in Transportation.
Cong is most experienced in business areas like Information Technology, Product Development, and Quality Assurance. Cong also has some experience in Supply Chain Management.
Cong has recently worked in industries like Information Technology, Telecommunication, and Healthcare.
Cong has recently worked in business areas like Information Technology, Product Development, and Quality Assurance.
Cong holds a Bachelor in Software Engineering from University of Sciences, Hue University.
The availability of Cong needs to be confirmed.
Daily rate distribution
The rates shown represent the typical market range for freelancers in this position based on recent contracts on our platform.
Average rates for similar positions
Rates are based on recent contracts and do not include FRATCH margin.
The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.
The median daily rate is the middle value of all daily rates — half of comparable freelancers charge less, half charge more. Unlike the average, it is barely affected by outliers.
Calculated based on our freelancers’ daily rates as of 18 Sep 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
Similar freelancers
Discover other experts with similar qualifications and experience
Lan anh T.
Duc F.
Hooman B.
Ulm P.
Timon R.
Tamás N.
Tungi D.
Stefan B.
Christian H.
Alexander K.
Experts recently working on similar projects
Freelancers with hands-on experience in comparable project as a Software Engineer
Lukasz R.
John A.
Thorsten M.
Hüseyin K.
Robert R.
Marijn S.
Simona T.
Niko S.
Christoph T.
Janusz M.
Nearby freelancers
Professionals working in or nearby Toronto, Canada
Soroush S.
Deepak Y.
Ian D.
Francisco M.
Neil R.
Chelly V.
Wolfgang K.
Jaana K.
Ata Ur Rahman K.
Pooria V.
