Meet Crystal
Product-minded backend & systems engineer focused on workflow-heavy products, API integrations, and complex business operations. I turn ambiguous requirements into clear system designs and working software — from workflows and business rules to APIs, integrations, and backend implementation. I work across the lifecycle: understand the problem, design the solution, build, integrate, and deliver.
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Rate
$25 - $50/hr
Skills and tools
Backend EngineerSoftware ArchitectSoftware EngineerFullstack EngineerBusiness AnalystProduct StrategistTechnical WriterSystems EngineerProduct ManagerSoftware ConsultantConsultantFrontend EngineerAI DeveloperProject ManagerAI AutomationBusiness Workflow AutomationAI EngineerJavaSpring BootMediumFastAPIPostgreSQLNext.jsTypeScriptPythonNotionDiagrams.netGoogle DocsOllamaContraMySQLReactAWSDockerKafka
Details
Hong Kong
(GMT+8) China Standard Time (CST), ±5 hours
Fluent in Mandarin • Professional Working Proficiency in English