This article describes how Grab's internal AI platform SpellVault evolved from a no-code LLM app builder into an agentic AI platform capable of reasoning and acting dynamically.

engineering

performance

Engineering

Data

Grab

213 min read

DevOps•2025-11-06

Grab's Mac Cloud Exit supercharges macOS CI/CD

Grab migrated its macOS CI/CD infrastructure from a US cloud vendor to a self-owned colocation cluster in Malaysia, achieving major cost and performance gains.

Machine Learning•2025-11-04

How we built a custom vision LLM to improve document processing at Grab

Grab built a custom ~1B Vision LLM to improve eKYC document processing for Southeast Asian languages and documents.

Hijacking Amazon EventBridge for launching Cross-Account attacks

This article explores how AWS EventBridge cross-account configurations can be exploited for infiltration, exfiltration, and persistent attacks.

Engineering

Squareup

01 min read

Machine Learning•2025-03-10

RoBERTa Model for Merchant Categorization at Square

This post describes Square's development of a RoBERTa-based ML model for accurately categorizing merchants into business types.

An analysis of the Square and Cash App outage

Square and Cash App experienced a system-wide outage on February 26 caused by a faulty security certificate bundle deployment.

Kube-Policies: Guardrails for Apps Running in Kubernetes

This post describes how a Compute Security team built kube-policies, a custom Kubernetes admission controller on top of Open Policy Agent (OPA) to replace Pod Security Policies with adaptive security guardrails.

Making Insights-Driven Decisions in an Ecosystem of Ecosystems

Block shares their data-driven cloud security platform and a GCP static credential elimination case study.

Leveraging Linux Internals to Supercharge Osquery Malware Detection

This post describes a novel technique combining osquery, YARA, and the Linux /proc filesystem to detect fileless and in-memory malware on Linux systems.

Evolution of Developer Productivity at Square - Part Four

Square's fourth developer productivity post covers investments in reliability culture and test engineering infrastructure.

Evolution of Developer Productivity at Square - Part Three

Square's third article in their developer productivity series covers platform-specific tooling, hardware upgrades, and key learnings from scaling engineering practices.

Evolution of Developer Productivity at Square - Part Two

Square's Client Foundations team shares concrete improvements made to developer productivity across Android, iOS, and backend development workflows.

Engineering