Backend developer

На данный момент Senior full stack developer.

Мои компетенции и опыт

Leo Wei

SUMMARY

Senior Backend and Full Stack Engineer with 9+ years of professional experience in high-load SaaS platforms, microservice architecture, and distributed systems. Expert in Go ( нужен доступ к резюме +), нужен доступ к резюме , TypeScript, PostgreSQL, MongoDB, Redis, Kafka, RabbitMQ, NATS, Kubernetes, Docker, and CI/CD pipelines. Proven ability to design scalable microservices, refactor monolithic systems, optimize database performance, implement asynchronous pipelines, mentor teams, and maintain observability. Experienced in cross-functional collaboration, architectural planning, and leading backend development initiatives for enterprise-scale SaaS products.

PROFESSIONAL EXPERIENCE

Senior Full Stack Developer

Micron

Sep 2023 – Present Riga, Latvia

• Developed new Go microservices from scratch to support enterprise SaaS features, using concurrency patterns, goroutines, channels, generics, and memory optimizations.
• Refactored monolithic нужен доступ к резюме services, migrating functionality into microservices while preserving performance and reliability.
• Implemented asynchronous event-driven pipelines using Kafka, RabbitMQ, and NATS for real-time messaging, notifications, and background task processing.
• Optimized PostgreSQL database performance, implementing complex queries, joins, indexing, transactions, and schema evolution for high-load environments.
• Leveraged Redis for caching, session management, and temporary high-frequency data storage to improve application throughput.
• Collaborated with DevOps on Kubernetes deployments, Docker containerization, CI/CD pipelines, and infrastructure scaling in both cloud and VM environments.
• Conducted cross-team code reviews, architecture discussions, and RFC/ADR participation, improving maintainability and system robustness.
• Mentored junior developers on Go idioms, нужен доступ к резюме migration, SQL optimization, microservices design, and best coding practices.
• Monitored production systems with Prometheus, Grafana, ELK Stack, and Sentry, analyzing logs and metrics, and participating in on-call rotations to resolve incidents.
• Designed fault-tolerant and highly available service architectures, considering load balancing, failover strategies, and service observability.
• Technical Stack: Go нужен доступ к резюме +, нужен доступ к резюме , PostgreSQL, MongoDB, Redis, Kafka, RabbitMQ, NATS, Kubernetes, Docker, CI/CD, Prometheus, Grafana, ELK, Sentry

Full Stack Developer

UNECOS SOLUTIONS

Apr нужен доступ к резюме Sep 2023 Riga, Latvia

• Built and maintained Go and нужен доступ к резюме microservices for high-load SaaS platforms, supporting enterprise clients with real-time data processing.
• Designed and implemented microservice architecture, asynchronous messaging, and event-driven pipelines using Kafka and RabbitMQ.
• Migrated and modularized нужен доступ к резюме monolith into distributed microservices, enhancing maintainability, scalability, and performance.
• Implemented PostgreSQL optimizations for high-load operations, complex query handling, transaction management, and data integrity.
• Integrated MongoDB for semi-structured data storage and Redis caching for session and frequently-accessed data.
• Participated in architecture planning, code reviews, and RFC discussions, defining service interfaces, communication patterns, and technical standards.
• Conducted unit and integration testing, ensuring high code quality and reducing production incidents.
• Collaborated with DevOps teams on Kubernetes deployments, Docker builds, and CI/CD pipeline automation, improving release stability.
• Mentored Middle and Junior engineers on Go and нужен доступ к резюме microservices, database optimization, asynchronous processing, and coding standards.
• Implemented observability and monitoring frameworks using Prometheus, Grafana, ELK, and Sentry to track performance, errors, and user activity.
• Technical Stack: Go нужен доступ к резюме +, нужен доступ к резюме , PostgreSQL, MongoDB, Redis, Kafka, RabbitMQ, Kubernetes, Docker, CI/CD, Prometheus, Grafana, ELK, Sentry

Frontend Developer

Onez

• Developed dynamic frontend applications using React, integrating with backend APIs in нужен доступ к резюме and Go services.
• Assisted backend development teams with нужен доступ к резюме services, API integrations, database queries, and asynchronous processing.
• Refactored legacy backend code for modularity, maintainability, and performance improvements, including SQL query optimization and Redis caching.
• Participated in team code reviews, Git workflows, and Agile/Scrum ceremonies, ensuring high-quality software delivery.
• Contributed to database schema design, query optimization, and performance tuning for internal SaaS platforms.
• Supported real-time dashboards and monitoring tools, integrating backend metrics for operational visibility.
• Technical Stack: нужен доступ к резюме , React, PostgreSQL, Redis, Go (basic microservice support), Git, Agile

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 & Microservices: Go нужен доступ к резюме +, нужен доступ к резюме , TypeScript, microservices, concurrency patterns (goroutines, channels, scheduler), asynchronous event-driven architecture, DDD, SOLID, code refactoring, unit/integration testing

Databases & Data Management: PostgreSQL (queries, joins, indexing, transactions, schema design), MongoDB, Redis, query optimization, high-load data handling

Messaging & Integration: Kafka, RabbitMQ, NATS, event-driven pipelines, asynchronous processing, inter-service communication

Infrastructure & DevOps: Kubernetes (Pods, Deployments, Services, Ingress), Docker, CI/CD pipelines, self-hosted and cloud environments, monitoring and observability (Prometheus, Grafana, ELK, Sentry), Linux/Unix

Performance & Reliability: Profiling (pprof), bottleneck analysis, memory optimization, high-load system design, fault-tolerant architecture

Leadership & Collaboration: Mentoring, code reviews, Agile/Scrum workflows, architecture planning, cross-team collaboration, RFC/ADR participation

Tools & Version Control: Git, Jira, YouTrack, CI/CD tools, monitoring dashboards, logging and alerting frameworks