Looking for a job

Christian Peraren

@christianperaren

Senior Software Engineer at GlobalNexus building production AI services for document analysis, knowledge retrieval, and business automation.

Philippines

Message

At GlobalNexus, I architect and deliver production AI services with Python, FastAPI, GPT-4, and Claude. These services support enterprise document analysis, information extraction, knowledge assistance, and automated content generation.

I build retrieval-augmented generation pipelines with LangChain, PostgreSQL, and pgvector, grounding generated answers in internal business documents. I also integrate multiple model providers and develop tool-calling workflows with validated, structured outputs.

Previously, at Monterail, I developed AI features for business applications, and at EasyParcel I built backend services for shipping operations. Earlier, I contributed to rebuilding Yichuang Cloud’s knowledge base search engine, improving average search execution speed by 12%.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

GlobalNexus

Oct 2024 - Present (2 years)

Architected and delivered production AI services using Python, FastAPI, GPT-4, and Claude, developing asynchronous REST endpoints for enterprise document analysis and structured information extraction. Implemented multi-provider LLM integration and RAG pipelines with LangChain, PostgreSQL, and pgvector.

Python fastAPI GPT 4 Claude Gemini OpenAI API Anthropic API Gemini API Lang Chain PostgreSQL Pgvector Docker AWS GitHub Actions Pytest Pydantic JSON schema Hugging Face Transformers LLaMA

Senior Full Stack Engineer

Monterail

Jul 2022 - Sep 2024 (2 years 2 months)

Developed Python and FastAPI services integrating OpenAI GPT-4 and Anthropic Claude into business applications, implementing authenticated endpoints for document summarization and structured data extraction. Implemented RAG with LangChain and PostgreSQL, and built asynchronous LLM processing endpoints.

Python fastAPI GPT 4 Claude Gemini OpenAI API Anthropic API Gemini API Lang Chain PostgreSQL Pgvector Pytest JSON schema Pydantic

Senior Software Engineer

EasyParcel

Aug 2019 - May 2022 (2 years 9 months)

Designed and maintained Python backend services for shipping operations, connecting parcel booking, carrier integrations, and shipment tracking through REST APIs. Built PostgreSQL-backed knowledge retrieval services and improved API performance with query optimization and Redis caching.

Python fastAPI PostgreSQL Redis Docker Pytest Git REST APIs Asynchronous Processing

Software Engineer

Yichuang Cloud

Jan 2016 - Apr 2019 (3 years 3 months)

Contributed to rebuilding key components of an enterprise knowledge base search engine using Apache Solr and Spring Data Solr, improving document retrieval. Improved search execution speed by 12% and implemented monitoring with Elasticsearch, Logstash, and Kibana.

Apache SOLR Spring Data Elasticsearch Logstash Kibana Java Search Optimization Monitoring