@TechAtBloomberg
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We are engineers and designers, builders and makers delivering unrivaled products and services every day. We have a lot to share and a lot to learn. Join us.
Joined August 2014
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Our CTO #DataScience Speaker Series welcomes @YaleEngineering's @armancohan to our Engineering office in NY today to talk with our #AI researchers about evaluation of LLM-based agents in open-ended domains
bloom.bg/4yZLY5W
#AIEvaluation #AgenticAI
ALT Arman Cohan is an Assistant Professor of Computer Science at Yale University, where he leads the Yale Natural Language Processing Lab.
At #AllThingsOpen this morning (10:30 AM), our OSPO's @alyssapwright & NVIDIA's Juanita Gomez discuss how our firms' engineers have been working to help sustain five different @NumFOCUS #opensource projects: #Blosc, #NumPy, #pandas, #SciPy & #Spyder
bloom.bg/3U3rCcL
Our engineers are hosting a Modern Data & .NET Meetup in Bloomberg's #Prague Office tonight (17:30-21:00 CEST); this evening's event is focused on modern software engineering in practice
bloom.bg/487kIGw
(1/3)
In the first block of talks, engineers from our Index Data Solutions team present:
Reliability Is an Engineering Problem
- Lucy Oliveira Antonino
Overclocking Your AI Software Factory
- Michal Frdlik
(2/3)
In the 2nd talk block, our engineers examine @dotnet + what it’s like to be an engineer at Bloomberg:
Under the Hood of .NET 11: Performance Improvements That Matter
- Jan Jahoda (formerly of MSFT's .NET Core team)
A Bloomberg Engineering Career
- Fang Liu & Andy Grout
(3/3)
STARTING NOW: Tune into tonight's @Bloomberg #Quant (BBQ) Seminar livestream, featuring a keynote by @JohnsHopkinsAMS' Hélyette Geman comparing the volatilities derived from financial markets & prediction markets + lightning talks
bloom.bg/4idhqGJ
#QuantFinance #Volatility
ALT H\u00E9lyette Geman is a Research Professor in mathematical finance in the Department of Applied Mathematics & Statistics at Johns Hopkins University.
At the 5th Workshop on Recent Trends in #ML and #RiskManagment at Stony Brook University today (4 PM EDT), #quant researcher Ruslan Tepelyan will deliver a talk about "Efficient Multivariate Kelly Optimization Reveals Sigmoidal Scaling"
bloom.bg/4ywelaO
#QuantFinance
In case you missed today's Featured Keynote at the @aiDotEngineer Conference on "Security in the Age of #AI: Recent Attacks, Incidents & Defenses" by @andrey_rybka, Head of Architecture & Emerging Technologies in @Bloomberg's CTO Office, watch it now: bloom.bg/4i0NLjQ
Congrats to former @TechAtBloomberg intern Abhishek Reddypalle & @torresariass of @PurdueEngineers + our CTO Office's @dns43 on receiving the Best Paper Award at #SCORED26 for their "Software Dark Matter" paper!🎉
Read their paper at arxiv.org/abs/2606.13966
#SupplyChainSecurity
At #SCORED26/#OpenSSFCommunity Day Europe 2026 today (3:45 PM CEST), our Dennis Roellke joins Purdue's Abhishek Reddypalle in presenting Software Dark Matter - the files in your artifacts that no #SBOM knows about
bloom.bg/4eazKPd
#supplychainsecurity
(1/5)
During their #CommunityOverCode Glasgow 2026 talk today (11:10 AM GMT), software engineers Jude Muriithi & Luke Kot-Zaniewski explore some concrete ideas for improving replication correctness and observability in the #Solr/Lucene ecosystem
bloom.bg/4i9vguF
#opensource
In their #CommunityOverCode Glasgow 2026 talk today (5 PM GMT), Isaac Reath & Andrés Beck-Ruiz explain why Bloomberg retired its proprietary @cassandra sidecar for #ApacheCassandra Sidecar - and how to automate your clusters with it
bloom.bg/4y1B51X
#opensource
In today's talk in #WFIC2026's Engineering Stream (2:40 PM CEST), Anders Johansson shares how our Feeds engineers made massive, schema-less #marketdata searchable in real time by decoding it on arrival to improve diagnosis, onboarding & #dataquality
bloom.bg/4hJf5nV
#WFIC
At #PyConGreece 2026 today (11:50 AM EEST), @StefanieMolin demonstrates how and why the mean & standard deviation can lie - using Data Morph, her #opensource tool that reshapes data into different shapes while keeping its stats identical
bloom.bg/47KGEHm
#Python🐍
In today's talk at #PyConGreece 2026 (11:10 AM EEST), #Python🐍 Guild Leader Olga Matoula explores uv's dependency resolver - showing how Python packaging boils down to a Boolean Satisfiability problem, and how uv's Rust-powered solver actually cracks it
bloom.bg/3UiNPU6
In her 90-minute tutorial at #PyConGreece 2026 today (11:10 AM EEST), "Hands-on Data Analysis with #Pandas" author @StefanieMolin helps attendees learn how to use pandas to filter, aggregate, reshape, and visualize data
bloom.bg/4hUsd8B
#Python🐍 #DataScience
In today's presentation in the Supply Chain & Binary Analysis track at #ISSTA26 (3:48 PM PDT), Hamed Ghavamnia discusses their research that tested five binary analysis tools on production code to see which actually produce usable syscall filters
bloom.bg/4hImUbY
In their #OSSummit Europe 2026 talk today (3:40 PM CEST), our Stephen Augustus & AboutCode's Philippe Ombredanne propose shared open data infrastructure for Software Composition Analysis - so every tool stops rescanning the same #opensource code repeatedly
bloom.bg/4AVhCCS
Two other findings:
- Disabling reasoning tanked Qwen & GPT's robustness, even on simple single-hop questions
- Treating retrieved docs as tool calls helped Claude models but actively hurted Qwen & GPT - same documents, opposite effect
#COLM2026 #InformationRetrieval
(5/6)
Read our team's #COLM2026 paper: "Evaluating the Retrieval Robustness of Large Language Models"
bloom.bg/3VVRJ5L
#InformationRetrieval #AI #LLMs
(6/6)
ALT Read the whole \"Evaluating the Retrieval Robustness of Large Language Models\" paper at https://openreview.net/pdf?id=GKvQGYzYME