Christopher Marlon Abastar

Glimpse / Software Development Engineer

Remote (Philippines), Lead Backend Engineer

Own infrastructure, backend and security end to end for a consumer-trends discovery platform.

• Built Glimpse from the ground up, including the Glimpse Chrome extension (200K+ active users, rated 4.8/5, Featured).
• Built highly scalable data-processing and web-scraping pipelines in Python.
• Built RAG pipelines on vector databases (pgvector on PostgreSQL, Pinecone) for embedding storage and semantic search.
• Run the AWS stack (EC2, ECS/Fargate, RDS PostgreSQL, Redshift, ELB), provisioned with Docker & Ansible on Ubuntu.
• Own security and private network access via VPN and WireGuard.
• Build internal tooling and analytics: Flask frontends, REST APIs and SQL reporting.

Collabspot / Software Specialist

Remote, Philippines

• Backend services in Python and Django.
• Owned CRM data-sync services and the consistency guarantees behind them.

XII Braves / Senior Software Engineer, Tech Lead

Singapore, game server for Valiant Force

• Architected the REST/HTTP API on Python 3, Flask, PostgreSQL 9.4, Redis, Celery & Socket.io, on AWS EC2 (FreeBSD) behind Nginx/Gunicorn.
• Split the platform into microservices for independent, decoupled scaling.
• Tuned the full stack for high traffic: FreeBSD kernel, PostgreSQL (JSONB, GIN, autovacuum), PgBouncer pooling, HAProxy for WebSockets.
• Secured game auth with JWT; automated FreeBSD provisioning with Ansible.

TransferTo / Technical Operations

Singapore, B2B airtime for 300+ operators worldwide

• Maintained 99.9% uptime across servers handling live telco transactions.
• Built a scalable Redis promotions system for targeted marketing, with analytics in PostgreSQL & Perl.
• Built CGI/HTML accounting reports: FX, per-country tax, discounts, revenue.
• Built a promo-code system extending airtime into value-added services.

Gumi Asia / Server Engineer

Singapore, mobile games infrastructure

• Built a scalable multi-platform push-notification service and improved login systems.
• Built a payment gateway (PayPal, Amazon App Store) to expand monetization.
• Designed AWS VPC networking, office VPN, and HA NAT; ran MongoDB as DBA.
• Tuned the Linux kernel (NAT, TCP/IP) for higher throughput.

zvelo / Threat Prevention → Lead Software Engineer

United States, web classification & threat detection

• Automated web-classifier expansion: 100+ categories in a new language in three months.
• Built a distributed queueing architecture for threat sensors on RabbitMQ.
• Grew the English classification system to 144 categories; integrated Google Safe Browsing & AV scanning.

Narrasystems / Software Development Engineer

Silicon Valley startup, networking test appliances

• Built a multi-threaded C/C++ packet generator and a full TCP/IP routing-protocol test suite (Tcl/Tk).
• Automated router testing with Expect across BGP, OSPF, IS-IS, RIP, PIM-SM, LDP.