I am an Assistant Professor at Técnico (University of Lisbon), and a Senior Researcher INESC-ID Lisbon. Before, I was a Senior Researcher at Oracle Labs Zurich (working on GraalVM), and before that, I was a Post-doc Researcher in the Systems Group, ETH Zurich, which I joined after receiving my PhD in CS from Técnico (University of Lisbon).

Most of my research focuses in the intersection between Systems and Programming Languages. I am especially interested in optimizing language runtimes for cloud environments such as Microservices and Serverless. Besides language runtimes, I work on Operating Systems, and Parallel and Distributed Systems.

• Serverless High-density Environment for eLastic cLouds (Shell) proposal was accepted for a 3-year research grant by FCT!

• Mosaic was accepted at SESAME’25!

• Granny was accepted at NSDI’25!

• PraaS was accepted at SoCC’24!

• CRIUsec was accepted at APSys’24!

• I gave a talk at the vHive Community Meetings about WebAssembly Execution Envinronments [Talk];

• I gave a talk at the Huawei Memory Technologies Summit’24 about Elastic Language Runtime for Cloud Environments;

• I visited the ETH Zurich and gave a talk about on WebAssembly Execution Environments for scalable, elastic and efficient cloud apps;

• I visited the University of Oslo and gave a talk about our work-in-progress on elastic language runtimes for cloud environments;

• Granny: Granular Management of Compute-Intensive Applications in The Cloud in NSDI’25
  • Carlos Segarra, Simon Shillaker, Guo Li, Eleftheria Mappoura, Rodrigo Bruno, Lluis Vilanova, Peter Pietzuch
• Process-as-a-Service: Unifying Elastic and Stateful Clouds with Serverless Processes [Slides] in SoCC’24
  • Marcin Copik, Alexandru Calotoio, Gyorgy Rethy, Roman Boehringer, Rodrigo Bruno, Torsten Hoefler
• Pronghorn: Effective Checkpoint Orchestration for Serverless Hot-Starts [Slides] in EuroSys’24
  • Sumer Kohli, Shreyas Kharbanda, Rodrigo Bruno, Joao Carreira, and Pedro Fonseca
• Off-the-shelf Data Analytics on Serverless in CIDR’24
  • Michal Wawrzoniak, Rodrigo Bruno, Ana Klimovic, Gustavo Alonso
• Naos: Serialization-free RDMA networking in Java [Talk] [Slides] [Code] in ATC’21
  • Konstantin Taranov, Rodrigo Bruno, Gustavo Alonso, Torsten Hoefler
• From Warm to Hot Starts: Leveraging Runtimes for the Serverless Era [Talk] in HotOS’21
  • Joao Carreira, Sumer Kohli, Rodrigo Bruno, Pedro Fonseca
• Compiler-Assisted Object Inlining with Value Fields in PLDI’21
  • Rodrigo Bruno, Vojin Jovanovic, Christian Wimmer, Gustavo Alonso
• Boxer: Data Analytics on Network-enabled Serverless Platforms [Talk] in CIDR’21
  • Michal Wawrzoniak, Ingo Mueller, Rodrigo Bruno, Gustavo Alonso
• Photons: Lambdas on a diet [Code] [Talk] in SoCC’20
  • Vojislav Dukic, Rodrigo Bruno, Ankit Singla, Gustavo Alonso
• Runtime Object Lifetime Profiler for Latency Sensitive Big Data Applications [Code] [Slides] in EuroSys’19
  • Rodrigo Bruno, Duarte Patrício, José Simão, Luís Veiga, Paulo Ferreira
• Graviton: Trusted Execution Environments on GPUs in OSDI’18
  • Stavros Volos, Kapil Vaswani, Rodrigo Bruno
• A study on Garbage Collection Algorithms for Big Data Environments in ACM Computing Surveys 2017
  • Rodrigo Bruno, Paulo Ferreira
• NG2C: Pretenuring Garbage Collection with Dynamic Generations for HotSpot Big Data Applications [Code] [Slides] in ISMM’17
  • Rodrigo Bruno, Luís Picciochi Oliveira, Paulo Ferreira
• ALMA - GC-assisted JVM Live Migration for Java Server Applications [Code] [Slides] [Poster] in Middleware’16
  • Rodrigo Bruno, Paulo Ferreira

Full publication list.

• PhDs and RAs:
  • Vasyl Lanko
  • Bernardo Ribeiro (co-advised with Nuno Santos)
  • Miguel Lourenço
  • Serhii Ivanenko
  • Radostin Stoyanov (co-advised with Wes Armour)
• MSc students:
  • André Páscoa (co-advised with Rodrigo Rodrigues)
  • André Jesus
  • Nyckollas Brandão
  • Evandro Giovanini

Past Members

• Gonçalo Duarte Java File System Virtualization (MSc, University of Lisbon)
• Wallace Garbim Optimizing AOT Compilation Pipeline for Cloud Applications (MSc, University of Lisbon)
• Rodrigo Cidra Faastion: Secure and Elastic Multi-tenant Serverless Runtime (MSc, University of Lisbon)
• Cláudio Correia (PostDoc, University of Lisbon)
• Pedro Luís, Reducing FaaS Latency with Storage-backed Caching (MSc, University of Lisbon)
• Sanaz Tavakoli User-Centric Approaches to Garbage Collector Selection and Heap Size Optimization for Java Applications (PhD at the University of Oslo, co-advised with Paulo Ferreira)
• David Nunes, CGroup Caching @ Graalvisor (MSc, University of Lisbon, co-advised with Luís Veiga)
• Jorge Godinho, Java Network Virtualization (MSc, University of Lisbon)
• Diogo Santos, Multi-Step Function-as-a-Service Application Profiler (MSc, University of Lisbon)
• António Elias, Serverless Machine Learning (MSc, University of Lisbon)
• Roman Babynyuk, Efficient Data Structures with GraalVM Native Image (MSc, University of Lisbon)
• Filipe Sousa, Performance Isolation in GraalVM Native Image Isolates (MSc, University of Lisbon, co-advised with Luís Veiga)
• David Frickert, Photons@Graal - Enabling Efficient Function-as-a-Service on GraalVM (MSc, University of Lisbon, co-advising with Luís Veiga)
• Sutao Wang, Thin Serverless Functions with GraalVM Native Image (MSc, ETH Zurich, co-advised with Ingo Mueller and Gustavo Alonso)
• Domantas Lionas, Runtime Object Lifetime Profiler for the Virtual Machine GraalVM (MSc, University of Oslo, co-advised with Paulo Ferreira)
• Fernando Moreira, Termite – Supporting Encounter Based Apps (MSc, University of Lisbon, co-advised with Paulo Ferreira)
• Carlos Oliveira, A Performance Comparison of Modern Garbage Collectors for Big Data Environments (MSc, University of Lisbon, co-advised with Paulo Ferreira)

Opportunities

• Reach out if you are interested in Cloud Computing, Operating Systems, Language Runtimes, or Compilers.
  • Let me know if you are considering a master thesis, interhsip, or starting a PhD program.

• Program Committee:
  • 2026: EuroSys’26, ASPLOS’26
  • 2025: ATC’25, ASPLOS’25, ICDCS’25, ICOOOLPS’25
  • 2024 EuroDW’24, ISMM’24, MoreVMs’24, ATC’24, EuroSys’24 (Fall), NSDI’24, ASPLOS’24
  • 2023: SoCC’23, VMIL’23, WORDS’23, ASPLOS’23
  • 2022: OSDI’22, NSDI’22 (ERC)
  • 2021: Middleware’21 (ERC)
  • 2020: EuroSys’20 (Shadow PC)
• Artifact Evaluation Committee: SOSP’21
• Organizing Commitee: SESAME’25, SESAME’24, MPLR’23, SESAME’23, MoreVMs’22

• Management and Administration of It Infrastructures and Services, Fall Semester, MEIC, Técnico
• Computer Systems Engineering, Fall Semester, MEIC, Técnico
• Cloud Computing and Virtualization, Spring Semester, MEIC, Técnico

• Research grant awarded to work on Serverless High-density Environment for eLastic cLouds (Shell) by FCT
• EdgeEmu received the best paper award!
• Best Young Researcher 2022 Award by INESC-ID
• Research work mentioned in The Raspberry Pi Super Computer in DevNucleus at Cloud World 2022
• Research work mentioned in Introducing HERMES
• Invited to the Google PhD Internal Research Conference 2018
• Invited to the Google Compiler and Programming Language Summit 2017 and 2019
• Awarded the “excellence” recognition for teaching in 2014/2015, 2017/2018, 2017/2018, 2021/2022, 2022/2023, 2023/2024
• Awarded 2nd place in the Fraunhofer Portugal Challenge 2018 in the PhD category
• Awarded the Doctoral Student Merit Award 2017 by the Distributed Systems Group at INESC-ID Lisboa
• Research work mentioned in Reducing Memory Usage to Speed Up Live Migration
• Invited submission to the Journal of Internet Services and Applications (JISA) by CCB’14 organizing committee
• Merit Award from EJEA, given to the top three students finishing under graduate degree

• Graalvisor (runtime virtualization layer) used in a large-scale Pi cluster at Cloud World 2022
• Object Inlining optimization in production at GraalVM Native Image
• Mobility simulator Hermes used in production at SBB and merged into MATSim
• External memory tracking system developed during intership used in V8 JS Engine
• Elastic memory contribution deployed in OpenJDK HotSpot JVM (JEP 346)
• Socket-based live process migration integrated into CRIU

This research group is funded in part by generous donations from Oracle Labs.