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engineering Articles

54 articles

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pinterest(24)
infrastructure(18)
technology(13)
machine-learning(10)
ai(8)
performance(6)
observability(5)
open-source
(5)
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Engineering(4)
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Airbnb logoAirbnb
101 min read
Machine Learning•2026-03-12

Recommending Travel Destinations to Help Users Explore

Airbnb describes how they built a destination recommendation model to help exploratory users in the trip planning stage discover and narrow down travel destinations.

ai
travel
technology
engineering
Pinterest logoPinterest
61 min read
AI•2026-03-06

Unified Context-Intent Embeddings for Scalable Text-to-SQL

Pinterest evolved its Text-to-SQL system into a production Analytics Agent using unified context-intent embeddings and governance-aware ranking to serve 100,000+ tables and 2,500+ analysts.

agentic-bi
context-engineering
pinterest
engineering
text-to-sql
Airbnb logoAirbnb
91 min read
DevOps•2026-03-04

It Wasn’t a Culture Problem: Upleveling Alert Development at Airbnb

Airbnb explains how they rebuilt their Observability as Code (OaC) alert development workflow to eliminate weeks-long validation cycles.

infrastructure
software-engineering
observability
technology
engineering
Pinterest logoPinterest
71 min read
Machine Learning•2026-03-03

Unifying Ads Engagement Modeling Across Pinterest Surfaces

Pinterest unified three separate ads engagement models for Home Feed, Search, and Related Pins into one shared architecture.

monetization
model-unification
recommender-systems
pinterest
engineering
Pinterest logoPinterest
181 min read
Machine Learning•2026-02-27

Bridging the Gap: Diagnosing Online–Offline Discrepancy in Pinterest’s L1 Conversion Models

Pinterest investigates the online–offline discrepancy in L1 CVR models in their ads funnel.

ads-ranking
machine-learning
pinterest
engineering
conversion-modeling
Airbnb logoAirbnb
101 min read
Machine Learning•2026-02-24

Academic Publications & Airbnb Tech: 2025 Year in Review

Airbnb recaps its 2025 academic research at KDD, CIKM, and EMNLP covering ML, NLP, and recommendation systems.

machine-learning
engineering
ai
data-science
technology
Pinterest logoPinterest
101 min read
Architecture•2026-02-24

Piqama: Pinterest Quota Management Ecosystem

Pinterest's Piqama is a generic quota management ecosystem that handles the full lifecycle of resource quotas across Big Data Processing and Online Services.

data-governance
distributed-systems
engineering
pinterest
infrastructure
Airbnb logoAirbnb
491 min read
DevOps•2026-02-18

Safeguarding Dynamic Configuration Changes at Scale

This post describes how Airbnb built "Sitar," their internal dynamic configuration platform for shipping runtime config changes safely at scale.

engineering
software-development
infrastructure
distributed-systems
software-architecture
Pinterest logoPinterest
281 min read
Data Engineering•2026-02-17

Drastically Reducing Out-of-Memory Errors in Apache Spark at Pinterest

This post describes Pinterest's Auto Memory Retries feature for Apache Spark, which automatically retries OOM-failed tasks on larger executors to reduce failures and resource waste.

engineering
data
pinterest
apache-spark
open-source
Pinterest logoPinterest
141 min read
Machine Learning•2026-02-13

GPU-Serving Two-Tower Models for Lightweight Ads Engagement Prediction

Pinterest introduced a GPU-served two-tower model using MMOE-DCN architecture for lightweight ads engagement prediction.

engineering
pinterest
monetization
Airbnb logoAirbnb
161 min read
Culture•2026-02-11

My Journey to Airbnb — Anna Sulkina

Anna Sulkina, Senior Director of Engineering at Airbnb, shares her career journey from Soviet-era Ukraine to leading Application & Cloud Infrastructure.

engineering
people
leadership
technology
software-development
Pinterest logoPinterest
41 min read
Data Engineering•2026-02-05

Next Generation DB Ingestion at Pinterest

Pinterest describes its next-generation database ingestion framework built on CDC, Kafka, Flink, Spark, and Iceberg to replace legacy batch-based pipelines.

pinterest
icebergs
change-data-capture
spark
engineering
Pinterest logoPinterest
41 min read
Machine Learning•2026-02-02

Beyond Two Towers: Re-architecting the Serving Stack for Next-Gen Ads Lightweight Ranking Models…

Spotify's ads team describes how they re-architected their serving stack to replace the Two-Tower model with more expressive neural networks capable of deep feature interactions.

engineering
pinterest
monetization
Pinterest logoPinterest
41 min read
Machine Learning•2026-01-28

Ads Candidate Generation using Behavioral Sequence Modeling

Pinterest's Ads team developed transformer-based behavioral sequence models to improve ad candidate generation using users' offsite activity history.

ads-retrieval
engineering
deep-learning
transformers
pinterest
Pinterest logoPinterest
61 min read
Machine Learning•2026-01-13

PinLanding: Turn Billions of Products into Instant Shopping Collections with Multimodal AI

Pinterest introduces PinLanding, a production pipeline that uses multimodal AI to automatically generate shopping collections from billions of catalog items.

engineering
ai
pinterest
large-language-models
shopping
Airbnb logoAirbnb
91 min read
Architecture•2026-01-12

Pay As a Local

This post explains how Airbnb launched 20+ local payment methods (LPMs) across global markets in 14 months through architectural modernization.

payments
tech
technology
engineering
Pinterest logoPinterest
31 min read
Machine Learning•2025-12-10

LLM-Powered Relevance Assessment for Pinterest Search

Pinterest Search presents a methodology for scaling search relevance assessment using fine-tuned LLMs to replace costly human annotation.

machine-learning
search
pinterest
experimentation
engineering
Pinterest logoPinterest
31 min read
AI•2025-12-08

How Pinterest Built a Real‑Time Radar for Violative Content using AI

Pinterest built a real-time AI-assisted system to measure the prevalence of policy-violating content by tracking what users actually see, not just what they report.

ai
engineering
pinterest
foundational-model
trust-and-safety
Pinterest logoPinterest
41 min read
Machine Learning•2025-12-05

Improving Quality of Recommended Content through Pinner Surveys

Pinterest describes how Pinner (user) surveys are used to train a machine learning model that improves content quality recommendations across Homefeed, Related Pins, and Search.

engineering
surveys
pinterest
pinner-experience
machine-learning
Pinterest logoPinterest
71 min read
Machine Learning•2025-12-04

On the (re)-prioritization of open-source AI

Pinterest shares its strategic shift toward fine-tuned open-source AI models, achieving comparable performance at less than 10% the cost of proprietary models.

foundation-models
open-source
pinterest
ai
engineering