Cap

Senior Golang Backend & Web3 Developer

Seasoned Software Engineer with 10+ years of experience in enterprise-scale applications development, specializing in Go, blockchain, and distributed systems. Proven track record in team leadership and delivering complex projects across multiple industries.

leonscottcap@gmail.com +44 7731 759987

Download Resume

Featured Projects

Showcasing production-ready applications with real-world impact

SwapOnce - Web3 Trading Platform

A comprehensive full-stack decentralized exchange (DEX) platform demonstrating complete blockchain development lifecycle. Built with Next.js and React frontend, Go microservices backend with GORM ORM and PostgreSQL database, and custom Solidity smart contracts for secure DeFi operations.

Next.jsReactTypeScriptTailwind CSSGoGORMPostgreSQLSoliditySmart Contracts

✓Frontend: Next.js with React and TypeScript for type-safe development
✓UI/Styling: Tailwind CSS for responsive and modern interface design
✓Backend: Go microservices architecture with high-performance API endpoints
✓Database: GORM ORM with PostgreSQL for efficient data management
✓Blockchain: Custom Solidity smart contracts for token swapping logic
✓Full-stack ownership: Complete development from UI to smart contract deployment
✓Production deployment: Live DeFi platform with real trading capabilities
✓Web3 Integration: Seamless blockchain interaction and transaction handling

Private Repository

Live Demo

Olingal - AI Multilingual Learning Assistant

Chrome browser extension integrating multiple AI models (DeepSeek V3, GPT-4o, Claude 3.5, Gemini 2.0) with Google Translate and DeepL. Features interactive language learning, private dictionaries, and AI-powered translation with advanced highlighting and contextual learning.

ReactGoChrome Extension APITypeScriptAI IntegrationWebRTC

✓Integrated 4+ leading AI models for translation and learning
✓6,000+ monthly active users with premium subscription tiers
✓Advanced dictionary system supporting 50+ private dictionaries
✓Real-time web page content highlighting and translation
✓Go backend handling high-concurrency API requests and user management

Private Repository

Live Demo

High-Concurrency E-Commerce Flash Sale System

Full-stack e-commerce platform with high-concurrency flash sale capabilities, featuring distributed architecture, message queuing, and advanced performance optimization techniques for handling massive traffic spikes.

GoRabbitMQIris FrameworkMySQLRedisCookie Auth

✓Handles 200,000+ concurrent flash sale requests
✓Distributed permission verification replacing traditional sessions
✓Cookie-based authentication for improved performance
✓Multi-dimensional optimization: frontend, backend, and security
✓RabbitMQ message queuing for order processing reliability

Private Repository

Cloud-Native Microservices Infrastructure Platform

Comprehensive containerized microservices ecosystem with complete observability, featuring service mesh architecture, distributed tracing, and automated deployment pipelines for production-grade e-commerce applications.

GoDockerKubernetesConsulgRPCProtobufgo-micro

✓Complete containerized microservices with Docker orchestration
✓Service registry and configuration center with Consul
✓Distributed tracing and monitoring with observability platform
✓Circuit breaker, rate limiting, and load balancing implementation
✓Automated CI/CD pipelines with container-native deployment

Private Repository

Enterprise Kubernetes DevOps PaaS Platform

Production-grade Platform-as-a-Service built with Go microservices on Kubernetes, featuring comprehensive container orchestration, automated deployment pipelines, middleware marketplace, and enterprise-level monitoring solutions.

GoKubernetesgo-micro v3DockerIngressCephPrometheus

✓Complete PaaS platform with Pod, Service, Deployment management
✓Automated DevOps pipeline with one-click application deployment
✓Enterprise middleware marketplace with 50+ pre-configured services
✓Advanced monitoring and observability with Prometheus integration
✓Multi-tenant resource isolation and dynamic scaling capabilities

Private Repository

DeFi Lending Protocol

Built a decentralized lending platform with automated market makers, supporting multi-collateral loans and yield farming strategies.

SolidityGoReactWeb3.jsPostgreSQL

✓Smart contracts handling $10M+ TVL
✓Gas-optimized for 40% lower transaction costs
✓99.9% uptime over 12 months

Private Repository

Distributed Task Scheduler

High-performance distributed task scheduling system built with Go, handling millions of tasks daily with fault tolerance and auto-scaling.

GoKubernetesRedisgRPCPrometheus

✓Processes 50M+ tasks daily
✓Sub-millisecond scheduling latency
✓Horizontal scaling to 100+ nodes

Private Repository

Blockchain Analytics Platform

Real-time blockchain data analytics platform providing insights for DeFi protocols, NFT collections, and on-chain activities.

GoNext.jsTypeScriptGraphQLTimescaleDB

✓Real-time data from 5+ blockchains
✓Advanced data visualization
✓Used by 1000+ daily active users

Private Repository

View More on GitHub

Open Source Contributions

Active contributor to the open source community

1,847

Contributions (2024)

Public Repos

156

Pull Requests

238

Followers

Contribution Activity

Less

Core Competencies

Comprehensive expertise spanning backend development, blockchain technology, and modern web applications

Backend & Infrastructure

10+ years Go development experience building high-scale microservices.
Expertise in designing high-performance, fault-tolerant Go applications.
Advanced knowledge of Go concurrency, memory management, and optimization.
Expert in cloud-native technologies (Docker, Kubernetes).
Proficient in PostgreSQL database design and optimization.

Blockchain & Web3

3+ years developing production-grade DeFi protocols with Solidity.
Implemented secure DEX platforms with AMMs and liquidity pools.
Designed and deployed lending protocols and yield farming systems.
Specialized in smart contract security, gas optimization, and Web3 integration.
Deep expertise in Solidity for complex DeFi applications.

Full Stack Development

3+ years expertise in React.js, Next.js, and TypeScript.
Advanced proficiency in state management and modern frontend best practices.
Skilled in optimizing web performance and user experience.

Professional Experience

A decade of building scalable systems and leading technical innovation

July 2023 - PresentRemote

Senior Golang & Blockchain Developer

Web3 Company

Independently design and develop high-performance Go microservices handling significant transaction volumes.
Architect and implement scalable blockchain backend solutions with complex distributed systems design.
Design and develop secure Solidity smart contracts for DeFi applications.
Implement comprehensive microservices architecture using Go.
Design and optimize high-performance backend systems with 40% latency reduction.

2017 - July 2023Onsite

Senior Infrastructure & DevOps Engineer

Cloud Platform

Architected and developed enterprise-scale cloud management platform using Go microservices.
Led development of an automated operations platform for 500+ entities.
Built comprehensive DevOps platform handling 50,000+ daily builds.
Established robust CI/CD pipelines and DevOps practices, reducing deployment time by 70%.

2015 - 2017Shanghai

Junior Golang Developer

Tech Enterprises Inc

Developed backend services in Go under senior developer guidance.
Participated in creating Go libraries for company projects.
Implemented caching solutions and learned distributed system concepts.
Assisted in system migration to PostgreSQL.

Key Technical Projects

Advanced technical projects showcasing expertise in specific domains

Production PlatformLive Deployment

SwapOnce - Web3 Trading Platform

Full-Stack DeFi Development

Architected and developed comprehensive Web3 trading platform using Next.js, React, and TypeScript for frontend.
Built high-performance Go backend with GORM ORM and PostgreSQL database for efficient data management and API services.
Designed and implemented custom Solidity smart contracts for secure token swapping and DeFi operations.
Integrated modern UI with Tailwind CSS, ensuring responsive design and seamless user experience across devices.
Deployed production-ready DeFi platform with real trading capabilities and blockchain transaction handling.
Demonstrated full-stack Web3 development expertise from smart contract deployment to frontend user interaction.

Advanced ProjectProduction Ready

High-Concurrency E-Commerce Flash Sale System

Go Full-Stack Development

Architected and implemented high-performance flash sale system using Go with RabbitMQ message queuing.
Designed distributed permission verification system replacing traditional distributed sessions with Cookie-based authentication.
Implemented multi-dimensional optimization including frontend caching, server-side optimization, and security measures.
Built scalable architecture handling massive concurrent traffic with minimal system complexity.
Achieved significant performance improvements through Go's concurrency model and efficient resource management.

Enterprise ScaleKubernetes

Cloud-Native Microservices Platform

Container & Orchestration

Developed comprehensive Go microservices architecture with full containerization using Docker and Kubernetes.
Implemented observable microservices with distributed tracing, monitoring, and logging systems.
Built service mesh infrastructure with advanced traffic management and security policies.
Designed cloud-native deployment strategies with auto-scaling and fault tolerance mechanisms.
Created development-to-production pipeline with GitOps and continuous deployment practices.

K8s FoundationMulti-Cloud

Multi-Cloud DevOps Management Platform

Infrastructure Automation

Architected enterprise DevOps platform managing multiple cloud providers with Kubernetes as core orchestration layer.
Implemented automated CI/CD pipelines supporting diverse deployment environments and cloud-native applications.
Built comprehensive monitoring and observability stack with custom metrics and alerting systems.
Designed infrastructure-as-code solutions with Terraform and Helm for consistent environment provisioning.
Created unified management interface for multi-cloud resource optimization and cost management.

Community Contributions

Technical education and knowledge sharing through comprehensive courses and tutorials

57,208+

Developers Served

Technical Courses

4.8+

Average Rating

9.93/10

1,478+ students

Go High-Concurrency E-Commerce Flash Sale System

Advanced Technical Course • imooc.com

Comprehensive full-stack development course covering high-concurrency system architecture.
Advanced Go programming with RabbitMQ message queuing and distributed systems design.
Real-world e-commerce flash sale implementation with performance optimization strategies.
Production-ready code examples and best practices for handling massive concurrent traffic.

View Course

4.8/5

865+ students

Go Microservices to Container Orchestration

Cloud-Native Development • imooc.com

Complete microservices architecture implementation using Go with Docker containerization.
Kubernetes orchestration and deployment strategies for cloud-native applications.
Observable microservices with distributed tracing, monitoring, and logging systems.
Service mesh implementation and advanced traffic management techniques.

View Course

4.9/5

500+ students

Multi-Cloud DevOps Platform with Kubernetes

Infrastructure & DevOps • imooc.com

Enterprise-scale DevOps platform managing multiple cloud providers using Kubernetes.
Advanced CI/CD pipeline automation and infrastructure-as-code implementation.
Multi-cloud resource optimization and unified management interface development.
Comprehensive monitoring stack with custom metrics and alerting systems.

View Course

4.7/5

54,365+ students

Go Language Fundamentals & Best Practices

Programming Foundation • imooc.com

Comprehensive Go language introduction designed for developers transitioning to Go.
Core concepts, syntax, and Go idioms with practical coding examples.
Concurrency patterns and goroutine best practices for high-performance applications.
Foundation course enabling tens of thousands of developers to start their Go journey.

View Course

What People Say

Testimonials from colleagues, managers, and clients I've worked with

“Yinneng is one of the most talented engineers I've worked with. His deep understanding of distributed systems and ability to architect scalable solutions saved us months of development time. He reduced our infrastructure costs by 40% while improving performance.”

Michael Chen

CTO at BlockFi Solutions

“Working with Yinneng on our open-source Kubernetes operator was a great experience. His code reviews were thorough, and his contributions significantly improved the project's performance. He's a true team player who mentors junior developers.”

Sarah Williams

Engineering Manager at Google

“Yinneng built our entire smart contract infrastructure from scratch. His attention to security and gas optimization was exceptional. The protocol has processed over $50M in transactions without a single issue. Highly recommended!”

David Thompson

Founder at DeFi Protocol

Technical Articles

Sharing knowledge and insights from real-world engineering experiences

Featured

Go Performance Optimization: From 50ms to 2ms in Production

Master Go performance optimization with advanced profiling techniques, memory management strategies, and production-proven patterns that achieved 96% latency reduction.

January 20, 202512 min read

GoPerformanceProfiling

Read Article

Web3 Go Backend Architecture: Building Scalable Blockchain Infrastructure in 2025

Deep dive into designing and implementing production-grade Web3 backend services with Go, covering everything from RPC optimization to MEV protection.

January 15, 202515 min read

Web3BlockchainGoArchitecture

Read Article

Microservices Communication Patterns: From Chaos to Symphony

A deep dive into microservices communication patterns with real-world examples and Go implementations - evolving from tangled service calls to orchestrated architecture.

August 28, 202410 min read

MicroservicesBackendCommunication

Read Article

View All Articles

Let's Connect

Have a project in mind or want to discuss opportunities? I'd love to hear from you.

Get in Touch

I'm always interested in hearing about new projects and opportunities. Whether you have a question or just want to say hi, feel free to reach out!

leonscottcap@gmail.com

Response Time

Usually within 24 hours

Preferred Contact Methods:

• Email for project inquiries
• LinkedIn for professional networking
• GitHub for open source collaboration