Toan Nguyen
Senior Software Engineer at PromptQL
Ho Chi Minh City, Vietnam
Summary
🤩
Rockstar🎓
Top SchoolToan Nguyen is a senior software engineer in Ho Chi Minh City with 11 years of experience building full-stack and cloud-native systems for startups and digital product companies. He currently contributes to core Hasura projects—helping power the widely used Hasura GraphQL Engine and Data Delivery Network—bringing expertise in scalable API design, observability, and SRE practices. Known for practical cloud architecture and microservices design, he has also advised teams as a chief technical advisor, driving adoption of GraphQL federation and CI/CD best practices. Toan combines hands-on backend contributions (including JSON path querying, raw log query fields, and OpenTelemetry templating in a major open-source GraphQL engine) with end-to-end ownership of AI integrations and high-impact platform features. He balances deep technical craft with mentoring and training, helping teams move from prototypes to resilient production systems. Fluent in turning complex data and API challenges into observable, cost-efficient cloud solutions, he brings both startup velocity and production-grade rigor.
11 years of coding experience
6 years of employment as a software developer
Computer Software Engineering, Computer Software Engineering at University of Information Technology
English, Vietnamese, Chinese
Stackoverflow
2,223reputation
208kreached
54answers
0questions
angular
top-5%
javascript
top-5%
typescript
top-5%
Github Skills (25)
postgresql10
wpgraphql10
wordpress-graphql10
graphql10
haskell10
graphql-api9
javascript9
json9
typescript9
api9
angular9
opentelemetry9
logging8
database6
angularfire6
Programming languages (15)
Github contributions (5)
hasura/graphql-engine
Mar 2019 - May 2020
Blazing fast, instant realtime GraphQL APIs on all your data with fine grained access control, also trigger webhooks on database events.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:8 commits, 13 PRs, 4 branches in 1 year 2 months
Contributions summary:Toan primarily contributed to the core functionality of the GraphQL engine, specifically by enhancing the JSON path argument for querying values within JSON columns, which improved the flexibility and expressiveness of the API. They also implemented a raw query field for error HTTP logs. Furthermore, the user added support for environment variable templates for OpenTelemetry URLs and attributes, enhancing the configurability and monitoring capabilities of the platform. Finally, the user contributed to improving the logging of response sizes and query execution times in the websocket transport.
realtimefine-grained-access-controlgraphql-serversql-serverhaskell
hasura/helm-charts
Jul 2023 - Mar 2025
A repository for Hasura GraphQL Engine helm charts
Contributions:8 reviews, 36 PRs, 50 pushes in 1 year 8 months
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