TechLead (Golang)

На данный момент Senior Software Engineer.

Мои компетенции и опыт

Ethan Lim

Singapore | нужен доступ к резюме | нужен доступ к резюме | нужен доступ к резюме

Summary

Seasoned software engineer and technical leader with over 10 years of experience in full-stack and backend development, specializing in Golang, microservices, and high-load payment systems. Proven expertise in designing fault-tolerant, horizontally scalable architectures, implementing secure transaction flows, and optimizing distributed systems. Skilled in DevOps, containerization, orchestration, CI/CD pipelines, cloud platforms, and event-driven architectures. Adept at technical leadership, mentoring teams, defining coding standards, and delivering end-to-end production-ready solutions. Experienced in banking integrations, PCI DSS compliance, and building robust APIs for mission-critical applications. Recognized for driving measurable results, increasing system reliability, and fostering collaborative, high-performance teams.

Experience

Rescode | Senior Software Engineer May 2022 ~ Present

• Led design and implementation of scalable microservices architecture in Golang for secure transaction processing
• Refactored legacy code to mitigate architectural risks and improve maintainability
• Developed APIs for high-load systems ensuring fault tolerance and horizontal scalability
• Set up Docker-based containerization and Kubernetes orchestration for production environments
• Implemented CI/CD pipelines to automate deployments, testing, and monitoring workflows
• Designed message broker integrations and optimized database performance (PostgreSQL, Redis)
• Applied security standards including TLS, OAuth2/OpenID Connect for transaction flows
• Built observability dashboards using Prometheus and Grafana to monitor service health and metrics
• Conducted code reviews, enforced coding conventions, and mentored junior engineers
• Developed proof-of-concept modules and prototypes for new platform features
• Led system design sessions, defining technical requirements in collaboration with business stakeholders
• Enhanced DevOps processes for reliability and scalability of microservices
• Reduced system latency by 30% through architecture optimization and profiling
• Implemented automated unit and integration tests to ensure robust code delivery
• Collaborated with external partners and banks to integrate payment gateways
• Documented architecture decisions, API specifications, and best practices for team alignment

Doodle Labs | Senior Full Stack Engineer Apr 2019 ~ Apr 2022

• Built and optimized backend services in Golang and Python for payment and fintech applications
• Designed microservice-based systems with event-driven architecture for high-traffic workloads
• Developed APIs and transaction flows with strict security compliance and reliability standards
• Implemented Docker/Kubernetes deployments with Helm for reproducible production environments
• Set up monitoring and logging solutions with Prometheus, Grafana, and ELK stack
• Automated CI/CD pipelines to streamline feature delivery and system updates
• Optimized PostgreSQL and Redis for high-performance transaction processing
• Conducted system audits, debugging, and root-cause analysis for mission-critical services
• Mentored team members, establishing code ownership and review processes
• Improved deployment lead times and reduced system downtime by 25%
• Documented architecture, coding conventions, and technical decisions for team reference
• Collaborated closely with business stakeholders to align technical solutions with requirements
• Implemented secure payment integrations with third-party gateways and providers

Wise | Full Stack Engineer May 2015 ~ Feb 2019

• Developed backend systems in Golang and Python for financial services platforms
• Designed and implemented microservices architecture with secure transaction flows
• Managed Dockerized applications and orchestrated deployments using Kubernetes
• Implemented unit, integration, and e2e testing to ensure code quality and reliability
• Optimized PostgreSQL and Redis for scalable transaction processing
• Collaborated with DevOps teams to establish monitoring and observability practices
• Debugged production issues, improving system availability and performance
• Developed reusable internal libraries for team-wide use
• Mentored junior engineers in Go, microservices, and backend best practices
• Coordinated with external partners for banking integrations and secure data handling
• Documented architecture, design decisions, and CI/CD processes

Education

National University of Singapore Aug 2009 ~ Jul 2013

Bachelor’s Degree in Computer Science

Skills

• Backend / Golang: Golang, Microservices, High-load Systems, Distributed Systems, APIs, Event-driven Architecture, Unit/E2E Testing, Fault-tolerant Systems
• Databases / Storage: PostgreSQL, Redis, MongoDB, SQL/NoSQL Optimization, Caching Strategies
• DevOps / Cloud: Docker, Kubernetes, Helm, CI/CD, Prometheus, Grafana, AWS, Azure, GCP, Monitoring, Observability
• Security / Payment Standards: PCI DSS, TLS, OAuth2/OpenID Connect, Secure Transaction Flows, Payment Gateway Integrations
• Collaboration / Leadership: Agile (Scrum, Kanban, SAFe), Mentoring, Code Review, Technical Documentation, Stakeholder Management
• Other: Problem-solving, System Design, Architecture Refactoring, Prototyping, Performance Optimization