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Engineering at Meta
engineering. fb. com > 05/01/2026 > security > meta-strengthening-end-to-end-encrypted-backups

How Meta Is Strengthening End-to-End Encrypted Backups

16+ hour, 55+ min ago  (445+ words) The HSM-based Backup Key Vault Meta's HSM-based Backup Key Vault provides the foundation for end-to-end encrypted backups for Whats App and Messenger. The system allows people to protect their backed-up message history with a recovery code, ensuring that the recovery…...

Engineering at Meta
engineering. fb. com > 04/21/2026 > ml-applications > modernizing-the-facebook-groups-search-to-unlock-the-power-of-community-knowledge

Modernizing the Facebook Groups Search to Unlock the Power of Community Knowledge

1+ week, 3+ day ago  (423+ words) People struggle with three friction points when searching for answers in community content " discovery, consumption, and validation. We needed a system where searching for an "Italian coffee drink" effectively matches a post about "cappuccino," even if the word "coffee" is…...

Engineering at Meta
engineering. fb. com > 04/16/2026 > developer-tools > capacity-efficiency-at-meta-how-unified-ai-agents-optimize-performance-at-hyperscale

Capacity Efficiency at Meta: How Unified AI Agents Optimize Performance at Hyperscale

2+ week, 1+ day ago  (537+ words) Here's how it works and where we're headed: When the code you ship serves more than 3 billion people, even a 0. 1% performance regression can translate to significant additional power consumption. In Meta's Capacity Efficiency organization, we see efficiency as a two-sided…...

Engineering at Meta
engineering. fb. com > 04/09/2026 > developer-tools > escaping-the-fork-how-meta-modernized-webrtc-across-50-use-cases

Escaping the Fork: How Meta Modernized Web RTC Across 50+ Use Cases

3+ week, 1+ day ago  (1429+ words) At Meta, real-time communication (RTC) powers various services from global Messenger and Instagram video chats to low-latency Cloud Gaming and immersive VR casting on Meta Quest. To meet the performance demands of billions of users, we spent years developing a…...

Engineering at Meta
engineering. fb. com > 04/08/2026 > security > trust-but-canary-configuration-safety-at-scale-meta-tech-podcast

Trust But Canary: Configuration Safety at Scale

3+ week, 2+ day ago  (186+ words) As AI increases developer speed and productivity it also increases the need for safeguards. On this episode of the Meta Tech Podcast, Pascal Hartig sits down with Ishwari and Joe from Meta's Configurations team to discuss how Meta makes config…...

Engineering at Meta
engineering. fb. com > 04/06/2026 > developer-tools > how-meta-used-ai-to-map-tribal-knowledge-in-large-scale-data-pipelines

How Meta Used AI to Map Tribal Knowledge in Large-Scale Data Pipelines

3+ week, 4+ day ago  (643+ words) AI coding assistants are powerful but only as good as their understanding of your codebase. When we pointed AI agents at one of Meta's large-scale data processing pipelines " spanning four repositories, three languages, and over 4, 100 files " we quickly found that…...

Engineering at Meta
engineering. fb. com > 04/02/2026 > developer-tools > kernelevolve-how-metas-ranking-engineer-agent-optimizes-ai-infrastructure

Kernel Evolve: How Meta's Ranking Engineer Agent Optimizes AI Infrastructure

4+ week, 1+ day ago  (366+ words) None of these custom operators appear in vendor libraries, and many are too workload-specific to warrant a library implementation. Without native accelerator implementations, these operators either fall back to CPU " forcing disaggregated serving architectures with significant latency overhead " or run…...

Engineering at Meta
engineering. fb. com > 03/31/2026 > ml-applications > meta-adaptive-ranking-model-bending-the-inference-scaling-curve-to-serve-llm-scale-models-for-ads

Meta Adaptive Ranking Model: Bending the Inference Scaling Curve to Serve LLM-Scale Models for Ads

1+ mon, 1+ day ago  (300+ words) Meta continues to lead the industry in utilizing groundbreaking AI Recommendation Systems (Rec Sys) to deliver better experiences for people, and better results for advertisers. To reach the next frontier of performance, we are scaling Meta's Ads Recommender runtime models…...

Engineering at Meta
engineering. fb. com > 03/17/2026 > developer-tools > ranking-engineer-agent-rea-autonomous-ai-system-accelerating-meta-ads-ranking-innovation

Ranking Engineer Agent (REA): The Autonomous AI Agent Accelerating Meta's Ads Ranking Innovation

1+ mon, 2+ week ago  (798+ words) Meta's advertising system delivers personalized experiences to billions of people across Facebook, Instagram, Messenger, and Whats App. Powering these interactions are highly sophisticated, complex and massively distributed machine learning (ML) models that continuously evolve to serve both advertisers and people who…...

Engineering at Meta
engineering. fb. com > 03/13/2026 > android > ai-codemods-secure-by-default-android-apps-meta-tech-podcast

Patch Me If You Can: AI Codemods for Secure-by-Default Android Apps

1+ mon, 2+ week ago  (194+ words) Meta's Product Security team has developed a two-pronged strategy to address this: The result is a system that can propose, validate, and submit security patches across millions of lines of code with minimal friction for the engineers who own them....