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I'm JUAN J. MARTINEZ Acosta

El Paso, TX · (915) 777-5465 · [email protected] ·

I'm a software engineer who enjoys building products from 0 to 1.

I focus on creating systems that solve real problems while balancing engineering, product thinking, and user experience — taking an idea, designing the architecture, and bringing it to production.

I'm a Lead Software Engineer at Quext, where I design and build AI-powered systems for the multifamily housing industry. I've led the transition to a generative AI chatbot platform using RAG, vector search, and prompt engineering (improving response accuracy by 90%), architected the TransUnion credit and screening integration (reducing manual review by 70%), and developed the Right to Review feature that helped drive adoption by Greystar, the largest property management company in the U.S.

I specialize in cloud-native AWS architectures and platforms that leverage AI and distributed systems. Outside of work, I'm building Grammaia, an AI-powered language learning platform with serverless infrastructure. I care about ownership and impact — driving technical decisions and building products that meaningfully improve how people interact with technology.

Experience

Lead Software Engineer (Remote)

Quext, Lubbock, TX
  • Led the transition to a generative AI–powered chatbot platform, automating document ingestion and improving response accuracy by 90% using RAG pipelines, vector search, and advanced prompt engineering. (Python, TypeScript, PostgreSQL)
  • Architected and expanded the TransUnion integration to securely fetch, store, and parse credit, eviction, and criminal reports using Named Entity Recognition (NER), reducing manual review time by 70%. (Python, TypeScript, PostgreSQL)
  • Led the design and launch of the Right to Review feature, enabling applicants to access and share screening records while ensuring state law compliance, driving adoption by Greystar, the largest U.S. property management company. (TypeScript, PostgreSQL, AWS)
  • Designed and implemented a scalable scheduling system supporting thousands of property tours, reducing scheduling errors by 40%. (TypeScript, PostgreSQL)
  • Provided technical leadership and architecture direction, mentoring engineers and collaborating with product and business teams to align technology with company goals.

View Quext Go Product

July 2020 - Current

Founding Software Engineer

Quext, Lubbock, TX
  • Built the first-generation AI chatbot platform for apartment communities, integrating Google Dialogflow ES to automate inquiries about unit availability, amenities, and tour scheduling. (TypeScript, PostgreSQL)
  • Developed the initial CGI-rendered chatbot interface in collaboration with Soul Machines, scaling the system to support 15,000+ monthly user interactions. (JavaScript, HTML, CSS, Bootstrap)
  • Established the technical foundations of the platform, including database schema design, coding standards, and early system architecture that supported the product's initial launch and growth.
July 2019 – July 2020

Projects

Grammaia.com

Founder & Engineer, El Paso, TX
  • Building an AI-powered language learning platform that dynamically generates grammar lessons and exercises using LLMs.
  • Designed a serverless AWS architecture using Lambda, API Gateway, DynamoDB, S3, CloudFront, and Cognito, integrating OpenAI LLM and vision models to dynamically generate grammar lessons, analyze learning content, and support AI-driven language exercises.
  • Implemented structured JSON schemas and REST APIs to support extensible activity types and automated content generation.
  • Focused on scalable system design, rapid curriculum iteration, and maintainable backend architecture.

View Product Website

December 2025 – Current

Technical Skills

Programming Languages & Frameworks
  • TypeScript
  • JavaScript
  • Python
  • SQL
  • Vue3
  • NestJS
Cloud & AWS Architecture
  • AWS Lambda
  • API Gateway
  • S3, CloudFront, Cognito
  • SQS, SNS
  • CloudFormation
  • Serverless Framework
Databases
  • PostgreSQL
  • MySQL
  • DynamoDB
  • Amazon RDS
AI & ML Technologies
  • OpenAI LLMs
  • OpenAI Embeddings
  • Hugging Face Sentence Transformers
  • Amazon S3 Vectors
  • Pinecone (Vector Search)
  • AWS Bedrock
  • Google Dialogflow ES
  • Retrieval-Augmented Generation (RAG)
Monitoring & Observability
  • AWS CloudWatch
  • Logging and metrics monitoring
Tools & Technologies
  • GitHub
  • Jenkins
  • HTML5, CSS

Education

The University of Texas At El Paso

B.S. in Computer Science
El Paso, TX
December 2018

Professional Development

Certificate in Architecting in AWS

Amazon Web Services, Online
June 2020

Awards

1st Place Parkhub Challenge

HackDFW, Fort Worth, TX
  • Achieved first place out of 25 teams by developing a traffic prediction solution for public events, with my contribution focusing on the creation of the mobile application for end users.
February 2019