Swift-C++ Interoperability
Apple2020–2022
Led the implementation of C++ getter/setter support in the Swift compiler, enabling seamless property-style access across language boundaries. Featured in WWDC 2023.
Omar Habra • Compiler & AI Engineer • Ultramarathon Runner
I make code and humans go faster,for a very long time.
I build high-performance compilers and AI systems, and I test my own limits in 100km+ races. I like tight loops, low latency, and long horizons.
- Reduced transformer inference latency by 47% with custom kernel fusion.
- Designed IR passes that cut compile time for large models by 30%.
- Finished a 100-mile ultramarathon in under 24 hours.
Runtime Profile● Active
Compiler / IR95%
GPU kernels90%
Distributed systems80%
ML infrastructure85%
Endurance Profile▲ Training
Longest race
100mi
Mountain ultra
Elevation
+6,000m
Total gain
Fastest 100k
9h 30m
Weekly vol.
80-100km
Currently focused onLive
Reducing kernel launch overhead
Trail running in the Pacific Northwest
Same endurance mindset as debugging production systems
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Featured Work
Technical contributions with measurable impact
From compiler infrastructure to AI acceleration, each project represents production-grade engineering with real-world results.
RISC-V Vectorization
SiFive2022–2023
Significant performance improvements on NASA benchmark suite through LLVM vectorization tuning and custom cost models for RISC-V Vector Extension.
Vision Model Acceleration
Tenstorrent2025
Porting DPT-Large depth estimation to Wormhole N300 AI accelerators with production-grade performance through bfloat8_b optimization.
Experience
Building at the cutting edge
8+ years building compilers, toolchains, and production systems at companies pushing the boundaries of what software can do.
Independent Consulting
AI Infrastructure & Systems Engineer
2023 – Present
Seattle, WA
- Shipped production AI tutoring platform serving multiple school districts: built end-to-end RAG pipeline with document ingestion, pgvector semantic search, Bedrock/Claude integration, and Next.js interface; delivered teacher-orchestrated learning workflows with retrieval accuracy >90%
- Architected secure multi-tenant infrastructure on AWS: implemented RBAC, per-school data isolation, Secrets Manager integration, VPC networking, and comprehensive audit logging; automated infrastructure provisioning via Terraform reducing deployment time from days to hours
- Reduced LLM failure rates by 65% through reliability engineering: built offline prompt/tool validators, Pydantic structured-output schemas, and automated regression suites; maintained consistent answer quality across diverse curricula
SiFive
Senior Software Engineer
2022 – 2023
San Mateo, CA
- Achieved 3x performance improvement on NASA benchmark suite by tuning Clang/LLVM vectorization cost models and code generation heuristics for RISC-V vector extension (RVV); implemented architecture-specific optimizations and delivered microbenchmark suite preventing regressions
- Led toolchain integration and automation: embedded LLVM analysis tools into FreedomStudio IDE, shipped Python-based compiler infrastructure for build automation, and developed custom RISC-V ISA analysis utilities
- Built robust CI/CD infrastructure: designed automated testing pipelines covering cross-compilation, ISA validation, and performance benchmarking; created Ansible automation for vendor environments, reducing release effort by 60%
Apple
Software Engineer — Clang/Swift Compiler
2020 – 2022
Cupertino, CA
- Led Swift–C++ interoperability initiative across the Swift/Clang toolchain, implementing AST bridging, name mangling compatibility, and ABI integration to unlock modern C++ standard library features for Apple platform teams; contributed to Swift Evolution proposals and open-source compiler infrastructure
- Coordinated Apple Silicon (arm64) compiler migration: validated code generation for new ISA, resolved ABI compatibility issues, optimized Clang/LLVM backend for M1 architecture; partnered with internal product groups to ensure smooth rollouts across iOS, macOS, and watchOS
- Engineered compiler reliability infrastructure: built CI bots for continuous integration testing across multiple architectures (x86_64, arm64); implemented automated log-triage and regression detection systems reducing time-to-diagnosis on critical Clang/Swift/LLVM issues by 40%
Technical Expertise
Deep knowledge across the stack
From low-level compiler internals to production AI infrastructure, with a focus on performance and reliability.
Compilers & Systems Engineering
LLVMClangSwift compilerRISC-VCode generationVectorization+3 more
Languages & Low-Level Skills
C++PythonSwiftTypeScriptJavaScriptAssembly+2 more
AI/ML & LLMs
RAGLangChainpgvectorEmbeddingsAWS BedrockClaude+7 more
Product & Web Development
ReactNext.jsNode.jsGraphQLREST APIsARKit+3 more
Cloud & Infrastructure
AWS ECS FargateAWS Step FunctionsAWS LambdaAWS S3AWS RDSTerraform+4 more
Databases & Storage
PostgreSQLpgvectorRedisS3Vector databases
Security & Compliance
Multi-tenant architectureRBACData isolationAWS Secrets ManagerAudit loggingPrivacy-by-design
Observability & Reliability
MonitoringTracingCost optimizationIncident responseSLA managementLoad testing
Beyond the Keyboard
Endurance builds discipline
Endurance athletics teaches the same lessons as systems engineering: deliberate practice, measurable progress, and staying calm under pressure.
Seattle Marathon 2024
26.2 miles through downtown Seattle
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Full marathon
Seattle Marathon
First marathon finish after four months of structured training.
Purple belt competitor
Brazilian Jiu-Jitsu
Multiple matches in a single day, adapting under stress.
Olympic distance
Lake Tye Triathlon
Open water swim, bike, and run.
Get in Touch
Let's build something together
Open to compiler engineering, AI infrastructure, and systems architecture opportunities. Based in Seattle, WA, remote-friendly.
Ready to discuss your next project?
Whether you need compiler expertise, AI infrastructure, or performance engineering, I'd love to hear about what you're building.