Nodejs Backend Developer

На данный момент Senior full stack developer.

Мои компетенции и опыт

Leo Wei

SUMMARY

Senior Full Stack Developer with 9+ years of progressive experience in backend and full-stack engineering, specializing in нужен доступ к резюме , TypeScript, SQL databases, and AWS serverless architectures. Proven expertise in designing scalable APIs, optimizing database performance, and integrating secure cloud solutions for international enterprises across technology, finance, and healthcare-related sectors. Adept at building RESTful services, automating deployments, leading refactoring of legacy applications, and ensuring security compliance. Strong cross-functional collaborator, delivering solutions in remote, distributed teams while maintaining high code quality through reviews, documentation, and best practices.

PROFESSIONAL EXPERIENCE

Senior Full Stack Developer

Micron

Sep 2023 – Present Riga, Latvia

• Architected and developed serverless backends using AWS Lambda, API Gateway, S3, and DynamoDB, handling sensitive enterprise-grade workloads with strict uptime requirements.
• Built and maintained нужен доступ к резюме + TypeScript microservices, enabling high-performance, low-latency processing for global-scale applications.
• Designed and deployed RESTful APIs that powered healthcare-style applications, including secure prescription and records handling flows.
• Optimized SQL (PostgreSQL/MySQL) queries and schemas, achieving >40% faster query execution for mission-critical features.
• Implemented multi-layer Lambda functions with reusable AWS layers, streamlining deployments and ensuring modular code reuse.
• Automated build, test, and deployment pipelines via GitLab CI/CD, reducing manual deployment errors by 80%.
• Collaborated with frontend teams using React, MobX, and Tailwind CSS, ensuring smooth integration between UI and backend APIs.
• Enhanced monitoring and observability by setting up CloudWatch dashboards, alarms, and structured logging pipelines.
• Partnered with international stakeholders, translating requirements into technical documentation and architectural diagrams in English.
• Conducted code reviews, security audits, and performance tuning, ensuring all deliverables aligned with best practices.

Full Stack Developer

UNECOS SOLUTIONS

Apr нужен доступ к резюме Sep 2023 Riga, Latvia

• Developed нужен доступ к резюме + нужен доступ к резюме backends, integrating with SQL and NoSQL databases to deliver scalable SaaS and B2B platforms.
• Built REST APIs consumed by mobile/web apps, ensuring security compliance and fast response times.
• Worked extensively with AWS (S3 for file storage, Lambda for serverless execution, API Gateway for routing, DynamoDB for structured data storage).
• Contributed to infrastructure-as-code setups with Terraform, automating AWS provisioning for multi-environment deployments.
• Migrated and upgraded legacy PHP/Node systems into modern microservice-based architectures, reducing technical debt and improving maintainability.
• Refactored SQL database schemas and queries, applying normalization and indexing techniques for performance improvements.
• Implemented secure authentication flows (JWT, OAuth2) across distributed applications.
• Created frontend interfaces in React with MobX and Tailwind CSS, ensuring responsive and accessible UX.
• Coordinated with cross-functional teams (QA, analysts, DevOps) to deliver features in Agile sprints, maintaining strong communication in English.
• Researched and integrated XML/XSD parsing services for healthcare-related data exchange formats.

Frontend Developer

Onez

• Delivered frontend solutions for enterprise web platforms using React, JavaScript (ES6+), TypeScript, jQuery, HTML5, CSS3.
• Integrated REST APIs from backend teams, ensuring clean data flow and efficient rendering.
• Worked closely with backend developers to define API requirements and optimize performance of data-heavy applications.
• Gained early experience with AWS-hosted environments, configuring S3 for static asset delivery.
• Introduced state management with MobX to improve client-side performance and maintainability.
• Collaborated in creating UI systems with Tailwind CSS and custom design frameworks, producing pixel-perfect responsive layouts.
• Developed internal tools for documentation, logging, and debugging APIs, improving developer productivity.
• Participated in Agile team workflows, learning remote-first collaboration, Git workflows, and CI/CD basics.

EDUCATION

The Hong Kong University of Science and Technology

May нужен доступ к резюме May 2016 Hong Kong

нужен доступ к резюме in Computer Science & Applied Mathematics

LANGUAGES

English

SKILLS

Backend & APIs

• нужен доступ к резюме (7+ years), TypeScript, JavaScript (ES6+), нужен доступ к резюме , REST API Design, Serverless Architecture
• Microservices, Authentication/Authorization (JWT, OAuth2), Secure API Development

Databases

• MySQL 8, PostgreSQL, DynamoDB, SQL Query Optimization, Database Schema Design, Stored Procedures

AWS & Cloud

• AWS Lambda, API Gateway, S3, DynamoDB, CloudWatch, Serverless Framework, Terraform, CI/CD (GitLab, GitHub Actions)
• Infrastructure as Code, Logging & Monitoring, Scalability Engineering

Frontend Development

• React, MobX, Tailwind CSS, JavaScript, TypeScript, HTML5, CSS3, Responsive UI, Accessibility (WCAG)

Development Practices

• Git, GitLab, GitHub, Code Reviews, Unit & Integration Testing, Agile/Scrum, Remote Collaboration
• Technical Documentation, API Specs, Architecture Diagrams

Additional

• XML/XSD Data Processing, Healthcare Data Exchange Formats, Legacy System Upgrades
• Performance Tuning, Security Auditing, International Team Collaboration (English B2/C1)