Hi, I'm Omar Habra
I make languages cooperate under pressure.
Let's build systems that stay fast, safe, and human.
Swift × C++ at Apple, 3× RISC-V gains at SiFive, and guardrailed AI platforms for classrooms and retail floors. My happy place is the boundary between compilers, infrastructure, and people.
When I'm not shipping code, I'm chasing tempo splits or sketching new tooling ideas over espresso.
Shipping
Pairing Swift with modern C++ so platform teams stay fast and safe.
Debugging
Profiling vector lanes at 2 a.m. with Grafana on one screen and espresso on the other.
Training
Sunrise tempo run around Lake Union—cadence planning feels like release planning.
Build tooling that feels friendly, ships quickly, and survives real-world stakes. If your stack needs Swift ↔ C++, vectorized kernels, or AI guardrails that never flinch, I want to help.
Swift compiler contributions
Swift–C++ interoperability features that unlock modern C++ standard library access for millions of Apple platform developers.
4:10Mix Swift and C++
WWDC 2023 session showcasing the interoperability features I helped build: zero-copy STL bridging, property synthesis, and safe diagnostics.
Interop in production
Bridging work lands in the public Swift toolchain, connecting modern C++ APIs with Swift ergonomics.
Two merged Swift PRs ship in every compiler build, enabling core STL containers in Swift without wrappers.
Diagnostics and tooling updates were coordinated across Apple Silicon bring-up and open-source workflows.
Pull requests
Merged + in review#40842
C++ getters/setters interoperability
Implemented support for C++ getters and setters in Swift, enabling seamless property access patterns across language boundaries.
View on GitHub#40276
Pointer type handling in C++ interop
Fixed critical pointer type compatibility issues in C++ interoperability, improving memory safety and type correctness.
View on GitHub#58436
Cleanup after devirtualization
Optimisation work to improve code generation efficiency following devirtualisation passes in the Swift compiler.
View on GitHubTechnical impact
Language interoperability
Enabled modern C++ standard library features to flow into Swift codebases without wrappers, unlocking decades of ecosystem leverage.
Type system integration
Built robust type bridging between Swift and C++ so memory safety is preserved while performance stays native.
Developer experience
Eliminated manual bridging headers for common patterns—diagnostics map back to Swift sites exactly where teams need them.
Platform reach
Ships with every Swift compiler release, impacting millions of iOS, macOS, and Apple platform developers worldwide.
Journey
From compiler internals to production AI, every chapter builds on deep technical foundations.
Eight years of compiler optimization, performance engineering, and systems architecture. From Swift–C++ interoperability at Apple to 3x RISC-V performance gains at SiFive, to production AI infrastructure. Endurance athletics reinforces the discipline required for sustained technical excellence.
Swift/Clang Compiler Engineer
Apple
Let Swift and C++ speak the same language.
Open Source Contributor
Swift
Shipping code that millions of developers depend on.
Senior Software Engineer
SiFive
Optimizing RISC-V for 3x performance gains.
Independent Consultant
Self
Building production AI infrastructure with guardrails.
Let Swift and C++ speak the same language.
Two years inside Apple's compiler group taught me how to earn trust across dozens of teams. I led the Swift–C++ interoperability initiative, implementing AST bridging, type system integration, and ABI compatibility to unlock modern C++ standard library features for millions of Apple platform developers.
- Architected Swift ↔ C++ type bridging enabling seamless interoperability between language ecosystems.
- Contributed 2 merged open-source PRs to Swift compiler: C++ getters/setters support and pointer type fixes.
- Validated arm64 code generation for M1 architecture and guided Apple Silicon migration.
- Built multi-architecture CI infrastructure reducing compiler regression detection time by 40%.
Cupertino, CA · Compiler engineering at scale
Technical focus
Deep compiler expertise meets production infrastructure engineering.
Eight years specializing in compiler optimization (Swift, LLVM, Clang), systems architecture, and AI infrastructure. From language interoperability to performance tuning to production ML systems, I build the foundational layers that millions depend on.
Compiler Engineering
Swift, LLVM, C++ interoperability
Deep expertise in compiler internals, type systems, and language interoperability. From AST bridging to code generation optimization, I build the foundational tooling that millions of developers rely on.
- 2 merged Swift PRs enabling C++ interoperability for Apple platform developers.
- Swift–C++ type bridging, ABI compatibility, and AST integration at Apple.
- LLVM/Clang vectorization tuning delivering 3× RISC-V performance gains.
- Multi-architecture CI infrastructure and compiler regression prevention systems.
Systematic optimization. Rigorous testing. Production excellence.
Systems Architecture
Performance, reliability, scale
Systematic performance optimization and reliability engineering across compiler toolchains, cloud infrastructure, and production systems. Every system I touch runs faster, safer, and more reliably.
- Apple Silicon (arm64) migration: validated code generation and ABI compatibility.
- RISC-V ISA-specific optimizations and microbenchmark suites preventing regressions.
- CI/CD automation reducing release cycles by 60% with Ansible and Python tooling.
- Observability and cost optimization for high-stakes production deployments.
Systematic optimization. Rigorous testing. Production excellence.
AI Infrastructure
Production ML with guardrails
Applying compiler-level rigor to AI systems: systematic validation, reliability testing, and performance tuning. Building RAG platforms, multi-tenant systems, and real-time inference pipelines.
- End-to-end RAG platform with >90% retrieval accuracy and multi-tenant security.
- Reduced LLM failure rates by 65% through structured validation frameworks.
- Real-time GenAI inference with 40% latency reduction via strategic caching.
- Terraform infrastructure automation and AWS cloud architecture at scale.
Systematic optimization. Rigorous testing. Production excellence.
Open Source Contributions
Shipping code that impacts millions
Contributing to critical open-source compiler infrastructure. My Swift–C++ interoperability work ships with every Swift compiler release, impacting the entire Apple developer ecosystem.
- Swift compiler contributor with merged PRs in type system and interoperability.
- Work featured in Apple WWDC 2023 "Mix Swift and C++" developer session.
- Contributions to Swift Evolution proposals defining language semantics.
- Collaboration with compiler teams across Apple, Swift community, and industry.
Systematic optimization. Rigorous testing. Production excellence.
What I'm exploring next
Bringing compiler-level rigor to AI systems for high-impact domains: education, healthcare, civic tech. Exploring intersections between systems engineering, biology, and learning sciences. Looking for teams that value reliability, long-term thinking, and measurable outcomes.
Beyond engineering
- Competitive Endurance AthleticsMarathon running · Triathlon competition · Brazilian Jiu-Jitsu (BJJ) competitor
- Interdisciplinary ScholarBiology and life sciences coursework · Interest in computational applications in biological systems · Cross-domain pattern recognition
Demos
Compiler rigor applied to interoperability, vectorization, and AI guardrails.
Each demo distils production work: Swift ↔ C++ bridging in the Swift toolchain, RVV vectorization wins that shipped to SiFive partners, and the guardrail systems keeping education AI deployments trustworthy.
Swift ↔ C++ interoperability in production toolchains
AST bridging and ABI-safe type translation allow Swift to call modern C++ libraries with zero-copy semantics. Compiler diagnostics map perfectly back to Swift call sites, so teams gain power without losing safety.
1// C++ header — ImageProcessor.hpp2class ImageProcessor {3 std::string name;4public:5 void process(const std::string &input);6 std::vector<uint8_t> getPixels() const;7};8 9// Swift bridging — zero-copy vectors10let processor = ImageProcessor()11processor.process("depth.png")12let pixels: [UInt8] = processor.getPixels()13if pixels.count < 1024 {14 throw InteropError.missingData15}16let histogram = pixels.chunked(into: 64).map(reduceHistogram)17analyze(histogram)- Bridged std::string, std::vector<uint8_t>, and template containers directly into Swift.
- Getter/setter detection exposes idiomatic C++ patterns as Swift properties.
- Shipped with WWDC 2023 "Mix Swift and C++" session and now part of every Swift release.
Designed for matte surfaces, consistent padding, and clear visual rhythm.
Athletics
Endurance sport keeps my engineering rigor honest.
Training blocks are product cycles: meter the stress, track the data, and keep the feedback loops tight. The same discipline that ships reliable compilers gets practiced long before sunrise on the road, in open water, and on the mats.
Lake Tye Olympic Triathlon
Open water swims and multi-discipline training build the same adaptability I bring to cross-functional engineering teams.
Seattle Marathon
Marathon prep mirrors performance engineering: break the course into measurable splits, instrument every long run, and iterate deliberately.
Brazilian Jiu-Jitsu competitor
Constant feedback loops and resilience under pressure translate directly into incident response leadership and calm code reviews.
6 podiums
Let’s build the next finish line
If your mission deserves resilient systems and a teammate who shows up when it matters, drop me a line.
I work with teams that value clarity, iteration, and care for the people their technology touches. Consulting, full-stack collaboration, or advisory support—let’s scope the right shape together.
GitHub