Reinaldi Mohamad Yusup

Product Engineer
Bandung, Indonesia | +62 896-5523-8972 | aldi.reinaldi.muhamad@gmail.com | linkedin.com/in/alldiezzz | github.com/alldiezzz | alldiezzz.github.io/portofolio-v2

Professional Summary

Product Engineer with 10+ years of experience delivering backend and full stack products across healthcare, e-commerce, and education. Specializes in Ruby on Rails, Go, and event-driven services, with hands-on technical leadership and cloud infrastructure experience. Delivered a healthcare system in 9 days, reduced AWS costs by 30%, and built products for teams in the UK, Singapore, the US, and Indonesia.

Professional Experience

Zero Gravity Mar 2025 - Present
Product Engineer (previously Senior Full Stack Engineer) United Kingdom (Remote)
  • Developing career assessment features to help users explore career paths.
  • Connecting the core platform with internal applications through a shared gateway, enabling existing functionality from both applications to be reused through a single entry point.
  • Built a university and job application tracker with Ruby on Rails and Hotwire, increasing active product usage by 70%.
  • Improved job recommendation accuracy by 80% through refined matching logic and behavioral data; enhanced mentor matching.
  • Delivered AI video transcripts, a tailored CV generator, and contextual guidance through the AI Wingman feature.
  • Integrated Google, Microsoft, and Apple single sign-on to simplify authentication.
  • Built Anthropic SDK agents for UI generation, automated QA, and planning workflows.
Biomark May 2021 - Feb 2025
Backend Engineer, promoted to Technical Lead Singapore (Remote)
  • Delivered a production patient data and lab management system in 9 days, from planning and development through testing and deployment.
  • Promoted from Backend Engineer to Technical Lead; led backend, frontend, and QA delivery for doctor portals, lab dashboards, and hospital integrations.
  • Worked on migrating the legacy application to a new NestJS application, using TypeScript and Apache Kafka to unify doctor and lab platforms.
  • Improved CI/CD pipelines supporting application delivery and deployment.
  • Reduced critical API response times by 200ms+ and search latency from approximately 5 seconds to under 1 second with Elasticsearch.
  • Reduced AWS infrastructure costs by 30%; implemented ISO 27001 controls and Prometheus/Grafana monitoring.
  • Introduced AI-driven patient recommendations, increasing user engagement by 25%.
Gardeneur Sep 2020 - Apr 2021
Backend Software Engineer San Jose, CA (Remote)
  • Led a monolith-to-microservices migration, improving system performance by 40%.
  • Cut search response times by 50% with Elasticsearch and checkout time by 30% with Stripe payment flows.
  • Optimized inventory, order, and shipping workflows, contributing to a 10% revenue increase.
Forstok.com Mar 2018 - Aug 2020
Senior Software Engineer Jakarta, Indonesia
  • Improved backend query performance by 50% and built an Excel data synchronization tool that saved 30 hours of manual work per month.
  • Developed Go microservices for the monolith migration, using goroutines and channels for concurrent data processing.
  • Integrated Shopee, Tokopedia, Lazada, and Bukalapak APIs to automate multichannel product listings.
Jualo.com Sep 2016 - Feb 2018
Full Stack Developer Jakarta, Indonesia
  • Developed re-commerce features and payment processing microservices.
  • Migrated search to Elasticsearch, reducing response times by 50%.
Karir.com Nov 2015 - Aug 2016
Rails Developer Jakarta, Indonesia
  • Built and maintained a job portal serving 5,000+ daily active users; optimized database queries to reduce page load times.
  • Managed AWS infrastructure and Terraform deployments.
Tri Saudara Sentosa Industry Apr 2015 - Oct 2015
Rails Developer Bekasi, Indonesia
  • Translated stakeholder requirements into an internal ERP system using Ruby on Rails.
Arthajina Mandala Nusantara May 2014 - Mar 2015
.NET Developer Bandung, Indonesia
  • Built .NET business automation systems and reduced ERP operational errors by 20% through automated validation.

Personal Projects

Family Protector Apr 2026
Android App — Kotlin, Jetpack Compose, Firebase Personal Project
  • Built an Android family safety app with remote device locking, screen time monitoring, and real-time messaging using Kotlin and Jetpack Compose.
  • Used Clean Architecture, Hilt, and coroutines; integrated Firebase authentication, data sync, storage, and push notifications.
  • Shipped a signed Android App Bundle to Google Play with Firestore rules enforcing parent-child data isolation.

Technical Skills

Languages: Go, Ruby, TypeScript, JavaScript, Python, Kotlin
Frameworks: Ruby on Rails, NestJS, Node.js, Hotwire, Turbo, Stimulus, React, Jetpack Compose
Mobile: Android (Kotlin, Jetpack Compose, Material3), Hilt DI, Firebase (Auth, Firestore, FCM)
Databases & Search: PostgreSQL, MySQL, Redis, Elasticsearch, OpenSearch
Messaging & Streaming: Apache Kafka, Event-Driven Architecture
DevOps & Infrastructure: AWS, Kubernetes, Docker, Terraform, GCP, CI/CD, API Gateway
Observability: Prometheus, Grafana
Compliance & Security: ISO 27001, OAuth (Google, Microsoft, Apple SSO)
AI & Developer Tools: Anthropic SDK (Agent Development), Claude Code, Cursor, OpenClaw

Education

Software Engineering 2014
STTB, Bandung
Computer Programming (RPL) 2009 - 2012
SMK Al-Marwah, Bandung