Senior Full Stack Engineer - .NET, AWS, Vue.js

Victor Yamamoto Lee

Senior Full Stack Software Engineer C# .NET AWS

Rio de Janeiro, Brazil

*****************@*******.***

https://www.linkedin.com/in/victor-yamamoto-lee-7556803a7/ Summary

Architecting end-to-end web platforms that bridge complex data ecosystems with intuitive user interfaces to empower operational excellence. As a Senior Full Stack Software Engineer, I specialize in constructing resilient .NET Core backends paired with Vue.js frontends, driving performance optimizations across AWS infrastructures. My focus remains on delivering scalable APIs and containerized deployments that resolve real-world scalability challenges while accelerating team delivery in dynamic environments. Experience

Senior Full Stack Software Engineer

Alice May 2025 - Present

Architected a comprehensive patient engagement platform for nationwide healthcare providers, orchestrating seamless data flows between provider directories, appointment scheduling modules, and real-time eligibility verification systems to streamline administrative workflows and enhance patient access to specialized care services across distributed networks.

Spearheaded backend service layer with C# and .NET Core, constructing resilient microservices that processed high-volume insurance claims data while integrating secure authentication mechanisms for multi- tenant environments.

Introduced Vue.js components with TypeScript for dynamic patient portals, enabling responsive interfaces that adapted to varying screen sizes and delivered intuitive navigation for scheduling and results viewing.

Optimized database interactions using SQL Server, crafting indexed stored procedures and query plans that slashed retrieval latencies by handling complex joins on patient demographics and treatment histories.

Containerized application deployments via Docker, establishing consistent build pipelines that facilitated rapid rollouts to development and staging clusters without environmental discrepancies.

Orchestrated cloud infrastructure on AWS, leveraging EC2 instances, RDS, and Lambda functions to scale processing during peak enrollment periods while maintaining cost controls through auto-scaling groups.

Automated testing suites with Jest and Playwright, achieving comprehensive coverage across unit, integration, and end-to-end scenarios to catch regressions early in the release cycles.

Mentored junior developers during code reviews, fostering adoption of modern patterns and contributing to Agile ceremonies that accelerated feature delivery timelines. Senior .NET Software Engineer

G-cluster Mar 2024 - Apr 2025

Directed the development of a multi-device cloud gaming backend, designing core services to manage game session orchestration, player matchmaking, and resource allocation across heterogeneous networks for global operator deployments.

Engineered high-throughput APIs in C# using .NET Core, implementing rate-limiting and caching layers to support concurrent streams for thousands of active sessions without service degradation.

Delivered frontend experiences with Vue 3 and TypeScript, building adaptive UIs for game catalogs that rendered fluidly on TVs, mobiles, and PCs with optimized asset loading strategies.

Streamlined data persistence in SQL Server through partitioned tables and optimized queries, enabling sub- millisecond lookups for player profiles and game metadata under heavy read workloads.

Integrated Docker containers for service isolation, automating orchestration with CI/CD workflows that reduced deployment times from hours to minutes across hybrid environments.

Migrated workloads to AWS using ECS, S3 for asset storage, and CloudWatch monitoring, achieving elastic scaling that handled traffic spikes from promotional events.

Implemented Vite bundling with Jest for frontend reliability, running parallelized test suites that validated cross-browser compatibility and performance benchmarks. Senior Backend Software Engineer

AP&O Solutions Aug 2022 - Feb 2024

Established secure communication platforms for federal agencies, architecting data ingestion pipelines and collaboration tools that integrated disparate legacy systems for mission-critical operations across defense and aerospace domains.

Developed robust services in C# and .NET Core, exposing RESTful APIs that facilitated real-time data synchronization between custom applications and enterprise databases.

Refactored data access layers for SQL Server, introducing connection pooling and query optimization to support high-concurrency reporting for government oversight functions.

Deployed containerized workloads with Docker, standardizing environments that ensured reproducibility in classified setups compliant with facility clearance requirements.

Pioneered AWS integration via IAM roles and EC2, provisioning VPCs that secured inter-service communications while enabling scalable analytics processing.

Automated validation with Jest unit tests, focusing on edge cases in data transformation logic to maintain integrity during system migrations.

Software Engineer

NoGravity.io May 2020 - Jul 2022

Built scalable web applications handling user authentication and content management, coordinating frontend and backend components to deliver seamless experiences for diverse operational teams.

Developed core logic in C# with .NET Core, creating services that processed business rules and integrated external feeds for dynamic content updates.

Implemented responsive interfaces using Vue.js and TypeScript, ensuring cross-device compatibility through modular component design.

Optimized SQL Server schemas and queries to enhance data throughput, reducing bottlenecks in reporting modules.

Leveraged Docker for local development and staging, streamlining team workflows with reproducible setups.

Introduced AWS basics like S3 and RDS to offload storage and persistence needs. Junior Software Engineer

Kaizen Technologies May 2019 - Apr 2020

Created foundational web features for internal tools, collaborating on initial architectures that supported early product iterations and user feedback loops.

Engineered backend endpoints in C#, focusing on basic CRUD operations that formed the backbone of administrative dashboards.

Assembled frontend views with JavaScript and early Vue.js patterns, prioritizing simplicity and load performance.

Managed data operations in SQL Server, writing initial queries to populate development datasets.

Explored Docker for project containerization, aiding in consistent setups across developer machines.

Contributed to testing with basic Jest scripts, verifying core functionality before handoffs. Education

The University of Aizu 2015-2019

Bachelor of Science Computer Science

Skills

Languages: C#, TypeScript, JavaScript, Python, HTML5, CSS3

Backend Frameworks: .NET Core, ASP.NET

Frontend Frameworks: Vue.js, Vue 3, Angular

Databases: SQL Server, PostgreSQL, DynamoDB

Cloud & DevOps: AWS (EC2, Lambda, ECS, RDS, S3, IAM, Route 53, CloudWatch), Docker, GitHub Actions, Terraform

APIs & Tools: RESTful APIs, GraphQL, Vite, Webpack

Testing: Jest, Playwright, Vitest

State Management: Vuex, Pinia, Redux

Soft Skills: Cross-Functional Collaboration, Mentorship, Agile Practices, Problem-Solving, Code Review

Architecture: Microservices, Serverless, Cloud-Native, Container Orchestration, Event-Driven Systems

Contact this candidate