09/08/2026 updated

YY
100 % available

Senior Full Stack Engineer

Austin, USA
Only remote
Bachelor's Degree in Computer Science
Austin, USA
Only remote
Bachelor's Degree in Computer Science

Profile attachments

Yuki_Yamamoto_Full_Stack_AI_Developer.pdf
Yuki_Yamamoto_Senior_Backend_Engineer_Resume.pdf
Yuki_Yamamoto_Android_Mobile_Engineer.pdf

About me

Full-Stack AI Developer with 8+ years of experience delivering production software across healthcare, life sciences, distribution,hospitality, construction, fintech, and enterprise SaaS. Specializes in AI-powered SaaS platforms, intelligent agents and automation,RAG knowledge systems, voice AI

Application Programming Interfaces (APIs)DevOpsPostgreSQLOpenStackBackendFastAPIBackend ProgrammingFull Stack DevelopmentFront End Software DevelopmentWebhooksMicroservices
Python & FastAPI Backend Development
Extensive experience building production-grade backend services with Python and FastAPI, including microservices architecture, idempotent operations, webhook processing, retries, and reconciliation for enterprise and high-traffic clients.

TypeScript & React Frontend Engineering
Strong proficiency in TypeScript, Next.js, and React for building responsive, accessible, and performant user interfaces tightly coupled to backend contracts, utilizing Tailwind CSS and Material UI.

PostgreSQL Data Modeling & Multi-Tenant Architecture
Deep expertise in PostgreSQL schema design and migrations, multi-tenant-aware data access patterns, RBAC, and Redis caching to ensure clear permission boundaries and scalable data management.

Payments & Billing Integration
Hands-on experience designing and shipping billing and payment flows using Stripe, covering payments, webhooks, refunds, reconciliation, invoicing, budgeting flows, and QuickBooks familiarity.

RESTful API & Microservices Design
Proven track record designing and optimizing RESTful APIs and microservices supporting complex workflows, real-time processing, and reliable API surfaces under live traffic.

Cloud Infrastructure & DevOps
Practical knowledge of AWS services including EC2, S3, RDS, and Lambda, as well as Docker, Kubernetes, CI/CD pipelines, TDD, and production monitoring.

MongoDB & NoSQL Databases
Experience integrating MongoDB for document-flexible data storage in large-scale analytics and processing pipelines alongside relational databases.

Angular & Vue.js Frontend Frameworks
Familiarity with Angular and Vue.js for building enterprise frontend applications, contributing to scalable architecture and long-term maintainability.

Java Backend Development
Experience developing Java backend services and collaborating with hardware and AI teams on production deployments, including Spring Boot and enterprise-scale systems.

Experience

Professional experience5 - 10 years
Freelancer since2017

Languages

EnglishNative speaker

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