Resume / backend

Henry Li

Senior Backend Engineer

Staff Backend Engineer and boutique software studio co-owner with 5+ years building cloud-backed services across consulting, logistics, and real-time platforms. Delivered Java, Spring Boot, Node.js, and PostgreSQL services, modernized Oracle PL/SQL workflows into event-driven architectures, and improved release delivery with CI/CD and Kubernetes for platforms handling 1M+ daily transactions with 99.95% uptime expectations. Strong in API design, service reliability, observability, and production operations.

1M+

daily transactions

99.95%

uptime environment

35%

lower transaction costs

2d

release lead time from 2 weeks

capability map

Languages & Frameworks

JavaSpring BootNode.jsExpress.jsTypeScriptJavaScriptPythonDjangoShell ScriptingSolidity

Architecture & APIs

MicroservicesRESTful APIsEvent-Driven ArchitectureKafka/SQSServerlessJWT/OAuthWebSockets

Databases & Caching

PostgreSQLOracle PL/SQLSQLMySQLMongoDBRedisRelational Database DesignQuery OptimizationMigrationsORM

Cloud, DevOps & Reliability

AWSEC2RDSS3LambdaDockerKubernetesCI/CDObservabilityPrometheusGrafanaELKFuzz TestingIncident Response

delivery timeline

Staff Software Engineer

Horizon Technologies Advertisement

Jul 2025 - Present

Node.jsTypeScriptPostgreSQLAWSAPI designCI/CD
  • Co-own a boutique software studio and lead backend delivery for client apps, designing APIs, data models, authentication flows, and deployment paths for web and mobile products.
  • Own infrastructure and release workflows across small-team engagements, balancing speed, reliability, and maintainability without heavy process overhead.
  • Turn business requirements into pragmatic technical roadmaps, selecting stacks, integrating third-party services, and setting delivery standards for client projects.

Application Engineer

Arrow Electronics

Jun 2024 - Jun 2025

JavaSpring BootOracle PL/SQLKubernetesAWSCI/CD
  • Built and scaled services for a warehouse management platform handling 1M+ daily transactions with 99.95% uptime requirements across global logistics hubs.
  • Modernized core Oracle PL/SQL workflows into event-driven Java and Spring services, improving incident response and increasing change velocity.
  • Built CI/CD pipelines and Kubernetes deployment workflows that cut release lead time from 2 weeks to 2 days.

Senior Software Engineer

Amtran International

Oct 2022 - Apr 2024

Node.jsPostgreSQLSolidityReal-time indexingFuzz testing
  • Built backend services and real-time data pipelines for a high-traffic platform serving 3,000+ concurrent users.
  • Optimized critical execution paths, reducing transaction-level execution costs by 35%.
  • Established static analysis and fuzz testing practices that supported zero critical findings across two external audits.

System Analyst

Ace Technologies Limited

Apr 2022 - Sep 2022

FlutterNode.jsAWS
  • Shipped Node.js-backed product services for a cross-platform app supporting $50k+/month in in-app revenue.
  • Introduced RFC-driven development and onboarding documentation that reduced new-hire ramp-up time by 50%.

Analyst Programmer

Global Logistics System (HK) Limited

Nov 2021 - Apr 2022

.NETAWSLogistics systems
  • Maintained backend workflows for a global logistics platform processing terabytes of freight data under 24/7 availability requirements.
  • Delivered the Cathay Pacific Fly Greener portal, supporting a 3x increase in corporate participation after launch.

Web Developer

MADTec Solutions Limited

Jan 2021 - Aug 2021

PythonDockerAlibaba CloudCloud migration
  • Supported a zero-downtime cloud migration that maintained 99.9% service levels and reduced hosting costs by 35%.
  • Delivered secure web applications for government and financial clients that passed penetration testing requirements.

additional information

Languages

English (Fluent), Cantonese (Native), Mandarin (Proficient)

Education

BA Economics, The University of Manchester