Senior Backend Developer

На данный момент Hong Kong, China.

Мои компетенции и опыт

Hi,

I am a backend-focused full-stack developer with a proven record of designing and delivering high-performance, cloud-native architectures

and building AI-powered systems that solve complex business challenges. Across my career—from innovating in a fast-paced Austin startup to

leading backend and AI development at a San Francisco SaaS company—I have consistently delivered measurable results through robust server-side

engineering, intelligent automation, and data-driven solutions.

At uShip (Austin Startup), I engineered scalable backend services using Python, Go, C#, PHP, Java, Rust, Solidity, нужен доступ к резюме , and Ruby,

along with modern frontend frameworks such as React, нужен доступ к резюме , and React Native, powering systems that served tens of thousands of concurrent users.

I built AI-driven workflow automation pipelines and predictive financial analytics tools, enabling real-time trading insights and improving analytics

speed by 76%. I also architected enterprise-grade APIs, integrated secure data flows, and led the cloud-native migration to AWS Lambda and Kubernetes,

cutting infrastructure costs by 42% and enabling zero-downtime deployments for 50K users.

At Opendoor Real Company, Inc., I led backend development for a SaaS platform, optimizing MongoDB pipelines for a 70% API speed boost and implementing

secure authentication, compliance, and payment systems. I designed NLP-powered chatbots (Dialogflow, spaCy) that automated 30% of customer support queries,

saving $90K/year, and developed AI-based resource allocation models that reduced operational turnaround by 20%. My recent work includes integrating LLMs (OpenAI,

Claude, LLaMA) with low-code/no-code platforms (n8n, Make, Zapier) for automated workflows, and leveraging Solidity for smart contract integrations and Rust for

high-performance microservices.

In addition to technical expertise, I bring HR and recruitment experience from collaborating closely with hiring managers and leading technical interview processes.

I have screened, evaluated, and onboarded engineering candidates, ensuring cultural fit and technical excellence. My ability to bridge business needs with talent

strategy has helped build effective development teams while reducing hiring time by 30%.

Money is not my primary motivator—I have enough for a comfortable living. My priority is contributing backend,

AI, and blockchain expertise to deliver high-impact, scalable solutions, while continuing to expand my international experience.

нужен доступ к резюме I am currently based in Hong Kong, China, but I plan to migrate to Russia within 5 years. I am eager to learn more about Russian business culture,

technology practices, and to build long-term collaboration with Russian colleagues.

Best regards,

David Campbell

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