17 Brookfield St., Roslindale, MA • +1 603-801-4558 • pablo@halpern.dev
Principal C++ Engineer | WG21 Contributor | Parallelism & Allocator Systems
C++ expert specializing in library design, memory allocators, and parallel runtime systems. ISO C++ (WG21) committee member and author of numerous adopted proposals, including polymorphic memory resources and trivial relocatability. Led design and implementation of allocator-aware systems and parallel runtimes at Bloomberg and Intel. Deep experience in large-scale, high-reliability systems with emphasis on correctness, performance, and API design.
· C++ language, Standard Library, and allocator-model design
· Parallel programming systems (Cilk, task-based runtimes)
· Generic programming and template metaprogramming
· Runtime systems and compiler integration (Clang/LLVM)
· Large-scale component architecture, testing, documentation, and code review
Additional Technologies: Git, C, Python, Unix systems, compilers, networking (SNMP)
Author/co-author of 50+ WG21 proposals, many adopted into the C++ standard.
· P3091: Improved associative container lookup (2025)
· P2786: Trivial Relocatability (2025)
· P2127: Allocator-aware software design (2024)
· P0155: Parallel Task Blocks (2015)
· N3916: Polymorphic memory resources (2014)
· N2554: Scoped allocator model (2008)
· Book: The C++ Standard Library from Scratch (Que, 1999)
· 10+ CppCon talks on allocators, parallelism, and modern C++
· SPAA 2009 Best Paper: Reducers and other Cilk++ Hyperobjects
C++ Development Consultant — Halpern-Wight, Inc. | 2019–2026
· Led design and implementation of allocator-aware extensions to Bloomberg’s (client) core libraries, aligning with C++17 pmr allocator model
· Authored documentation clarifying allocator model semantics and usage
· Conducted design and code reviews for core C++ infrastructure
· Collaborated on WG21 proposals improving allocator usability
· Coordinated team of compiler engineers implementing standards-aligned features
Parallel Programming Languages Architect — Intel Corporation | 2009–2019
· Chaired cross-organization effort to unify parallelism strategy
· Drove design of language and library features across C, C++, Fortran, and OpenMP
· Refactored Cilk runtime scheduler for open-source release
· Prototyped parallelism features in Clang front end and LLVM back end
· Delivered training on parallel programming systems
Member of Technical Staff — Cilk Arts | 2007–2009
· Guided evolution of Cilk++ language design
· Implemented parallel loop constructs in compiler front end
· Contributed to work-stealing scheduler
· Designed reducer abstractions (SPAA award-winning work)
Senior Software Engineer — Bloomberg LP | 2003–2007
· Led team building C++ interface layer for rapid application development
· Achieved near-100% test coverage in core libraries
· Implemented custom STL with advanced allocator model support
· Authored tools and training to improve engineering practices
Earlier Career
Founder and consultant (Halpern-Wight Inc.), product developer (CLI Power Tools), and contributor across networking, embedded systems, and tooling domains.
Education
B.A., Computer Science — Hampshire College
Senior Thesis: Language Extensions for Improved Data Abstraction