Yvan Ton-That
Verified Expert in Engineering
React and Full-stack Developer
Yvan is a software architect and full-stack developer passionate about building products that customers love and creating new technology to improve the world. He has a proven track record of growing products by planning, launching, and monitoring growth experiments. He is focused on product discovery to improve the state of home healthcare in Canada.
Portfolio
Experience
Availability
Preferred Environment
Visual Studio, GitHub, Azure DevOps, Azure, MongoDB, .NET, React, Next.js, Material UI, Domain-driven Design (DDD)
The most amazing...
...thing I've done is launch a company to simplify the lives of Canadians by providing access to independent nurses who offer in-home care services.
Work Experience
Co-founder
Vesta Health Technologies Inc.
- Validated market (home care) and user (nurses and patients) problems based on literature reviews and user interviews.
- Generated solutions, created disposable prototypes with Figma, and validated solutions with usability testing.
- Launched online experiments to validate messaging, user interest for each type of care, and other factors. A fake door test measured an ad click-through rate over 10% and a search rate over 50%.
- Created and evolved a roadmap of outcomes based on learnings from market research, user research, and experiments.
- Designed, developed, and launched a solution that enables patients to receive nursing care at home.
- Designed, developed, and launched a solution that enables nurses to build their profiles, make themselves available, provide in-home care, and have access to an EMR.
Freelance Developer
Levio Consulting
- Developed applications and services that cash all checks deposited by members of one of Canada's largest banks: these applications and services replaced those of a supplier that no longer met the client's security criteria.
- Tracked and fixed bugs using Jira as a reporting tool.
- Migrated applications and services that archive bank checks to .NET Framework 4.8.
Freelance Developer
Sleep Geekz Inc.
- Developed, from scratch, the infrastructure required by the Biz Ops team to streamline business operations. The infrastructure contained serverless functions and integrations with Dynamics 365 Business Central, shipping providers, etc.
- Automated business operations include requesting shipping quotes, picking the best quotations, creating shipping orders, etc.
- Ensured the infrastructure was tolerant of failures using cloud patterns such as retry, bulkhead, circuit breaker, etc.
- Implemented continuous integration and delivery of the solution using Azure DevOps.
Freelance Developer
Pen to Paper Co.
- Developed, from scratch, the infrastructure required by all developers to build the company's many emails.
- Integrated MJML into the workflow to reduce the pain of coding responsive emails that look good to most email clients.
- Integrated Litmus into the workflow to test the emails more effectively and allow peers to review them as different email clients render them.
- Ensured accessibility was built into all emails (light/dark mode, usability, copy, screen readers).
Senior Developer
GSoft
- Established a team to acquire more users for Softstart, which HR leaders and managers use to conduct better onboarding.
- Established a team to activate more users in Officevibe and generate additional revenue. Managers use Officevibe to engage with their team members and cultivate trust.
- Planned and delivered growth experiments and analyzed and shared the results. One result was helping to achieve quarterly goals by implementing and optimizing trials in Officevibe.
- Integrated tools, such as Mixpanel, Hotjar, and Intercom. Created resilient services that teams needed to collect and analyze user data and reduced data loss caused by transient errors from 18% to 0.01%.
- Created a microservices-based architecture to eliminate the monolith that was difficult to scale.
- Established, promoted, and animated a community of 20+ members, in which they developed a growth mindset and shared practices for building products that users want.
- Created, promoted, and animated a book club with 20+ members, in which members shared out-of-domain knowledge to foster creativity.
Developer
Orckestra
- Migrated the product and sales management platform from Silverlight to AngularJS.
- Developed a reference application to deliver new sites faster, such as Mondou and Sport Expert.
- Created a stack of automated tests to reduce blockers to continuous delivery.
Software Development Engineer in Test
Genetec
- Created an automated test architecture, including integration, UI, acceptance, and load tests, to reduce the burden on software testers and human errors.
- Integrated testing and reporting frameworks, such as Selenium and Azure Test Plans.
- Created test suites for Android, iOS, and web applications and reported regressions to product teams.
Experience
Vesta Health Technologies Inc.
https://getvesta.coSkills
Languages
C#, JavaScript, SQL, TypeScript, CSS, HTML, C#.NET, SCSS, Sass, HTML5, Visual Basic .NET (VB.NET)
Frameworks
.NET, Next.js, Material UI, Redux, Selenium, Jest, Tailwind CSS, AngularJS, .NET Core, Angular, ASP.NET Core, ASP.NET, ASP.NET MVC, VB.NET WinForms, MJML
Libraries/APIs
React, REST APIs, Nightwatch.js, Google Maps API, Twilio API, Vue, JSON API, Node.js, Azure API Management, Windows Forms (WinForms), Stripe, Stripe API
Tools
Figma, Visual Studio, GitHub, Azure Key Vault, Azure Application Insights, Hotjar, Fiddler, SendGrid, Azure Application Gateway, Git, Azure Network Security Groups, Azure App Service, xUnit, Jira, C#.NET WinForms, Litmus, Microsoft Dynamics, Stripe Checkout
Paradigms
CQRS, Azure DevOps, Microservices, Usability Testing, Event Sourcing, REST, DevOps, Unit Testing, B2B, Agile
Platforms
Azure, Azure Functions, Mixpanel, Salesforce, Twilio, Sanity Studio, Docker, Azure PaaS, Oracle Database
Other
Domain-driven Design (DDD), Lean Experiments, Event Modeling, Software Development, Azure Service Bus, User Research, Intercom, UX Research, Web Accessibility, Product Roadmaps, Feature Roadmaps, Copywriting, User Interviews, Market Research, Semantic UI, Electrical Design, Azure Event Grid, Content Creation, User Interface (UI), User Experience (UX), eCommerce, APIs, Code Review, Web Development, Full-stack, Front-end, Email Templates, HTML Email, Responsive Email Templates, HTML Templates, Firewalls, A/B Testing, CI/CD Pipelines, Material Design, GitHub Actions, API Management, Leadership, Back-end, Email, Email Coding, Email Design, Email Markup, Accessibility, Fault Tolerance, IT Operations Management (ITOM)
Storage
MongoDB, NoSQL, Redis, Redis Cache, Azure Cache, PL/SQL
Education
Master's Degree in Computer Engineering
Polytechnique Montréal - Montréal, Canada
Bachelor's Degree in Electrical Engineering
McGill University - Montréal, Canada
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