Mich Crisologo

MC

Looking for a job

Mich Crisologo

@michcrisologo

Senior Backend & AI Systems Engineer at Dasig Solutions, Inc., delivering production RAG systems and MCP servers for SaaS clients.

At Dasig Solutions, Inc., I architect backend systems for international SaaS clients and deliver production-grade RAG systems for semantic search and AI-assisted workflows. I also build MCP servers that connect AI applications with internal tools, business processes, and structured datasets.

I’ve built and scaled Ruby on Rails applications, modernized legacy systems, and improved SQL performance, reducing page load times by 60%. I designed high-availability infrastructure that maintained 99.9%+ uptime.

At MedCheck.com.ph, I delivered the MVP in two weeks as the first engineering hire and led a backend team of five. I built healthcare APIs for enterprise and government integrations and helped move the monolith toward service-oriented architecture, reducing time-to-market by 30%.

Experience

Work history, roles, and key accomplishments

ME

Current

Engineering Lead

Current

MedCheck.com.ph

Jan 2016 - Present (10 years 9 months)

First engineering hire; delivered MVP in 2 weeks and led a backend team of 5. Built healthcare APIs, migrated to service-oriented architecture, and increased test coverage to 90%+.

Ruby on Rails PostgreSQL Healthcare APIs Service Oriented Architecture Test Driven Development Team Leadership

DI

Current

Senior Engineer, Founder

Current

Dasig Solutions, Inc.

Jan 2014 - Present (12 years 9 months)

Architected and delivered backend systems for international SaaS clients, including RAG systems, MCP servers, and AI integrations. Scaled Ruby on Rails applications, improved performance, and maintained high-availability infrastructure.

Docker CI CD Performance Optimization Test Driven Development Ruby on Rails PostgreSQL Redis Sidekiq REST APIs GraphQL RAG MCP AI Integration AWS GCP

SM

Lead Ruby Engineer

Sakura Sky Media

Jan 2013 - Dec 2017 (4 years 11 months)

Architected eCommerce Rails platforms and optimized Sidekiq workloads, reducing queue backlog by 80%.

Ruby on Rails Sidekiq Ecommerce Performance Optimization

FG

Senior Software Engineer

Friendster / MOL Global

Jan 2010 - Dec 2013 (3 years 11 months)

Worked on high-traffic backend systems and improved bug turnaround by 50% through TDD and CI practices.

Test Driven Development Continuous Integration Backend Systems

NT

Software Engineer

NEC Telecom

Developed C++ and Java telecom systems.

C++Java Telecom Systems

BR

Software Engineer

Branders.com

Developed Java and PHP web applications.

Java PHP Web Development

UV

Research Assistant

UP Visayas

Assisted in research activities at the University of the Philippines Visayas.

Education

Degrees, certifications, and relevant coursework

GC

Google Cloud

Google Cloud Platform Qualified Developer, Cloud Computing

Qualified Developer certification from Google Cloud.

SA

Scrum Alliance

Certified Scrum Master, Project Management

Certified Scrum Master credential.

UV

University of the Philippines Visayas

Bachelor of Science, Computer Science

Grade: Cum Laude

Activities and societies: DOST Scholarship Awardee

Bachelor of Science in Computer Science, graduated Cum Laude and recipient of the DOST Scholarship Award.

Tech stack

Software and tools used professionally

Sidekiq

PostgreSQL

Ruby on Rails

Redis

Vue.js

Java

PHP

C++

GraphQL

Docker

Stimulus

AWS

Availability

Looking for a job

Location

Philippines

Authorized to work in

Salary expectations

50k+ GBP

Job categories

Backend Engineer AI Systems Engineer Software Engineer Engineering Manager

Skills

Backend Engineering AI Systems Engineering Ruby on Rails RAG MCP Server Development AI Product Integration PostgreSQL Distributed Systems Service Oriented Architecture REST APIs GraphQL RAG Systems Harness Engineering Loop Engineering Prompt Orchestration Platforms

Interested in hiring Mich?

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