Senior Full Stack & AI Engineer with 10+ years building scalable SaaS platforms, cloud-native distributed systems, and production-grade AI features for enterprise workflows. Deep hands-on experience integrating LLMs, GenAI, NLP, embeddings, vector search, and RAG—focused on reliable retrieval, prompt quality, scalable APIs, security, and observability in AWS/Azure environments.

John Arrendondo

Senior Full Stack & AI Engineer with 10+ years building scalable SaaS platforms, cloud-native distributed systems, and production-grade AI features for enterprise workflows. Deep hands-on experience integrating LLMs, GenAI, NLP, embeddings, vector search, and RAG—focused on reliable retrieval, prompt quality, scalable APIs, security, and observability in AWS/Azure environments.

Available to hire

Senior Full Stack & AI Engineer with 10+ years building scalable SaaS platforms, cloud-native distributed systems, and production-grade AI features for enterprise workflows.

Deep hands-on experience integrating LLMs, GenAI, NLP, embeddings, vector search, and RAG—focused on reliable retrieval, prompt quality, scalable APIs, security, and observability in AWS/Azure environments.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
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Work Experience

Senior Software Engineer at Propertybase by Lone Wolf
September 1, 2021 - June 1, 2026
Led development of AI-enabled SaaS capabilities across React, Next.js, TypeScript, Java Spring Boot, Node.js, Python, PostgreSQL, and cloud services for an enterprise CRM platform. Integrated LLM APIs to support knowledge processing, summarization, intelligent assistance, and workflow automation. Built AI-driven enterprise search and knowledge retrieval using embeddings, vector search, and RAG; improved retrieval and prompt workflows through testing and edge-case handling. Designed scalable backend services and REST APIs for data processing, business logic, and third-party integrations. Implemented asynchronous and event-driven workflows for long-running operations and resilient data processing. Optimized PostgreSQL schemas, queries, and indexing for large datasets. Delivered production deployments on AWS using Docker, Kubernetes, Jenkins, and CI/CD with logging, monitoring, and troubleshooting. Collaborated across product, frontend, backend, and architecture teams on secure, scalable,
Senior Full Stack Engineer at Microsoft
July 1, 2017 - August 1, 2021
Developed enterprise and cloud-based applications using React, TypeScript, Java Spring Boot, and Node.js, applying distributed-systems patterns for large business workflows. Built scalable REST APIs and microservices connecting internal platforms and external enterprise integrations. Implemented data-processing and service-integration workflows for reliable movement, validation, and transformation of information across distributed applications. Delivered cloud-native workloads on Azure using Docker, Kubernetes, and automated CI/CD. Improved performance via database optimization, caching, asynchronous processing, and API/service tuning. Implemented authentication, authorization, access control, automated testing, monitoring, and production troubleshooting practices. Contributed to architecture reviews and code reviews in cross-functional delivery with engineers, architects, and product stakeholders.
Software Engineer at Clari
August 1, 2013 - May 1, 2017
Built features for a data-intensive revenue intelligence SaaS platform covering sales forecasting, pipeline management, analytics, and decision workflows. Developed React and TypeScript dashboards and reusable UI components for analytics, reporting, and workflow experiences. Implemented backend APIs and services for customer-data processing, reporting, integrations, and high-volume workflows. Delivered data-driven capabilities surfacing revenue insights from customer and sales datasets. Improved scalability and responsiveness through frontend optimization, backend service improvements, and database tuning. Supported integrations across multiple systems to improve consistency for downstream product features. Worked with product and engineering teams on testing, debugging, code quality, continuous integration, and iterative customer-facing SaaS delivery.

Education

Bachelor of Computer Science at Dowling College
August 1, 2009 - May 1, 2013

Qualifications

Add your qualifications or awards here.

Industry Experience

Software & Internet, Financial Services, Real Estate & Construction