Micro-frontend architecture
Contributed to a host-shell architecture composing 10+ React micro-frontends with single-spa, Webpack 5, and isolated Tailwind theming — letting teams ship independently without breaking a coherent product surface.
Open to interesting conversations
Cristian
Sandu
I build fast, thoughtful React interfaces and resilient end-to-end systems.
Senior full-stack engineer based in Chisinau, Moldova. I work on React micro-frontend architecture, design systems built on Tailwind and Radix UI, and serverless backends on AWS Lambda and Step Functions — mostly in fintech.
9+ yearsEngineering experience
10+ MFEsComposed by a host shell
AWSLambda · Step Functions · DynamoDB
FintechProduct domain
Engineering focus
Polished interfaces, practical architecture, reliable delivery.
Cristian is a senior full-stack engineer working across React micro-frontends, component libraries, and event-driven serverless backends in finance-focused product environments. He enjoys turning complex product requirements into polished UIs, owning work end-to-end across React, Node.js, AWS Lambda, Step Functions, and DynamoDB, and keeping large codebases maintainable as they scale.
Design systems
Worked on a multi-generation React component library built on Radix UI primitives and Tailwind, with Storybook documentation and typed component contracts shared across product teams.
Serverless workflows on AWS
Designed and shipped event-driven backends on AWS Lambda, Step Functions, and DynamoDB using SST and AWS CDK, with Datadog tracing and OpenAPI-typed contracts across services.
Stack
Tools I work with.
A full-stack toolkit centered on React, Node.js, AWS, data systems, and architecture choices that fit the product phase.
Frontend
UI & styling
Backend
AWS
Data
Observability
Testing
Languages
Team
Writing
Notes on engineering, product work, and growth.
What I like about end-to-end engineering in fintech
A personal note on building interfaces, services, and workflows in finance-focused products.
Micro-frontends: lessons I keep in mind
Micro-frontends can help teams move independently, but only when the boundaries are chosen carefully.
Why frontend performance matters
A short note on why fast interfaces are not just technical wins, but product wins.
Contact
Always happy to talk shop.
Currently employed full-time, but open to interesting conversations — especially with friendly teams building ambitious fintech, React, and AWS-backed products.