Boris Ulasevich
Principal Software Engineer at BellSoft
Argentina
Summary
👤
Senior🎓
Top SchoolBoris Ulasevich is a Principal Software Engineer with a 25-year track record designing and implementing JVMs, compilers, and embedded runtimes, currently leading low-level VM work at BellSoft from Argentina. He brings deep expertise in HotSpot/CLDC, JIT code generation (including Thumb-2 and Cortex-M4F), debugger and profiler integration, and bare-metal porting acquired across Sun, Oracle, and embedded projects. Known for bridging theory and practice, he started in compiler bootstrapping and language toolchains (Visual Prolog) and moved into production JVM engineering and innovative profiling architectures for constrained devices. His contributions to improving LLDB test automation reflect a rigorous QA mindset that complements his systems-level development. Colleagues rely on him for organizing complex porting efforts and delivering reliable runtime behavior rather than typical application-level Java development. He holds a Master’s in Mathematics from Saint Petersburg State University, underscoring a strong formal foundation behind his systems design decisions.
9 years of coding experience
14 years of employment as a software developer
Master, Mathematics, Master, Mathematics at Saint Petersburg State UniversityPhysical and mathematical Lyceum No. 30 (St. Petersburg)
Stackoverflow
249reputation
19kreached
2answers
0questions
Github Skills (11)
debugging10
python10
lldb10
test-automation10
unit-testing9
clang6
programming-language6
singleton6
android6
llvm6
java6
Programming languages (4)
Github contributions (5)
llvm-mirror/lldb
Dec 2016 - Feb 2017
Project moved to: https://github.com/llvm/llvm-project
Role in this project:
QA Engineer / Test Automation Engineer
QA Engineer / Test Automation EngineerContributions:5 commits in 1 month
Contributions summary:Boris primarily focused on improving the testing of the lldb debugger. Their contributions involve writing and modifying test cases, specifically related to breakpoint behavior, stepping, and conditional breakpoints. The code changes demonstrate the implementation of test scenarios using Python and lldb's testing framework to verify debugger functionality. The user ensured the debugger's correct behavior by testing various stepping and breakpoint scenarios.
llvmdebuggerlldbgdb
sifive/riscv-llvm
Nov 2016 - Feb 2017
SiFive's LLVM working tree
Contributions:8 commits in 3 months
llvm
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