About Me

Computer scientist located in London, UK, working on static/dynamic program analysis at Meta/WhatsApp. PhD in formal methods from BME, Hungary. Former intern at CERN and SRI International.

Employment

2021 - present: Meta/WhatsApp, London, UK, Software engineer
Working on automated static and dynamic program analysis tools for WhatsApp server (Erlang) and clients (Android/iOS), mostly concerning reliability, performance and privacy properties.
2019 - 2021: Budapest University of Technology and Economics, Assistant lecturer
Involved in research, projects and education at the Critical Systems Research Group, related to software model checking and other verification techniques.

Education

2016 - 2020: Budapest University of Technology and Economics
Computer science PhD, advised by Dr. Zoltán Micskei
Dissertation: Effective Domain-Specific Formal Verification Techniques
2014 - 2016: Budapest University of Technology and Economics
Computer Engineering MSc thesis
2010 - 2014: Budapest University of Technology and Economics
Computer Engineering BSc thesis

Internships

2019: SRI International, New York, USA (12 weeks)
Formalizing and verifying advanced data structures in Solidity.
2018: SRI International, New York, USA (12 weeks)
Developing solc-verify, a formal verification tool for Solidity smart contracts.
2017: McGill University, Montréal, Canada (8 weeks)
Working on functional verification for cyber-physical systems.
2015: CERN, Geneva, Switzerland (10 weeks)
Developing code generation in ROOT, a data analysis framework for the experiments.
2013: evopro, Budapest, Hungary (6 weeks)
Modeling and analyzing public transportation networks using Petri nets.

Tools and Projects

2021 - present: Infer
Infer is a general purpose static analysis platform developed at Meta. I am working on the integrations of Infer on WhatsApp codebases (server/Android/iOS), including the Erlang frontend and some customized analyses.
2022 - 2024: Sapienz
I worked on integrating Sapienz – an automated UI testing engine – with the WhatsApp iOS client to perform taint analysis for privacy properties.
2021 - 2022: FAUSTA
FAUSTA is a traffic generation-based automated testing tool for WhatsApp server. I worked on more precise fault localization.
2015 - 2021: Theta
Theta is a generic, modular and configurable model checking framework. I was one of the original founders and main developers, focusing on the abstraction-based algorithms for transition systems and programs.

Selected Publications

SOAP’25 Compositional Static Callgraph Reachability Analysis for WhatsApp Android App Health paper slides
FSE’24 Automated End-to-End Dynamic Taint Analysis for WhatsApp paper slides
ICSE’24 PrivacyCAT: Privacy-Aware Code Analysis at Scale paper
ICST’22 FAUSTA: Scaling Dynamic Analysis with Traffic Generation at WhatsApp paper
VSTTE’19 solc-verify: A Modular Verifier for Solidity Smart Contracts paper slides
FMCAD’17 Theta: a Framework for Abstraction Refinement-Based Model Checking paper slides talk

Full list of publications / Google Scholar / dblp

Service

PC chair: Erlang’25, FormaliSE’25-AE, Infer’23
PC member: Infer’24, FormaliSE’23, VMCAI’23, WoSoCer’22, FORTE’22, OMBEE’21, FMICS’21, MSR’21-shadow, SV-COMP’21, OMBEE’20
AE PC member: CAV’22, TAP’21, PLDI’21, TAP’20, VMCAI’20
Journal reviewer: SCP’24, FAC’24, SCP’23, SQJ’22, STTT’22, IEEE Access’20
Subreviewer: VMCAI’22, POPL’22, FASE’21, MODELS’20, VSTTE’19, HASE’19, LADC’18, SRDS’17
Volunteer: DISC’19, AVM’17, SRDS’16, ICACON’15, DSN’13