Omar Habra
AI Infrastructure & Compiler Engineer · ex-Apple, ex-SiFive
Open to work · Senior AI infrastructure & compiler roles
Summary
Senior engineer with production compiler experience at Apple (Swift/Clang) and SiFive (LLVM, RISC-V vectorization). Independent since 2023, building production AI systems on AWS for clients; since 2026, founder of two live AI products, DiffSwarm (AI code review) and RedlineAI (AI contract review for legal teams).
Experience
Independent · DiffSwarm, RedlineAI, consulting
2023 – PresentFounder & AI Infrastructure Engineer · San Francisco, CA
- RedlineAI: Shipped a macOS app and CLI that reviews NDAs, MSAs, DPAs, vendor agreements and SOWs, keeping only findings tied to the contract text; team plan for legal teams.
- DiffSwarm: Shipped a paid PR-review CLI where several AI reviewers work independently and only evidence-backed findings survive; bug-hunt and security modes, CI mode, Homebrew install.
- AI tutoring platform (client): Built the retrieval and Claude-on-Bedrock backend, with structured-output validation and regression checks on every curriculum change; infrastructure in Terraform on AWS.
- Image-generation pipeline (client): Cut latency and failures with caching and batching, and added an evaluation harness to catch model regressions.
SiFive
2022 – 2023Senior Software Engineer — LLVM for RISC-V · San Mateo, CA
- Sped up vector workloads on SiFive's RISC-V cores by tuning LLVM vectorization cost models and RVV code generation; added microbenchmarks that caught compiler regressions before they reached customers.
- Integrated LLVM analysis tooling into Freedom Studio IDE and built Python automation for toolchain builds and RISC-V ISA analysis.
- Automated cross-compilation, ISA validation, and performance benchmarking through CI pipelines with Ansible-managed environments.
Apple
2020 – 2022Software Engineer — Swift/Clang Compiler · Cupertino, CA
- Built Swift–C++ interoperability features in the Swift compiler (shipped in Xcode), including C++ getters/setters imported as Swift properties.
- Supported Apple Silicon compiler work by resolving ABI and backend issues across Swift, Clang, and LLVM for arm64 targets.
- Built cross-architecture CI and log-triage tooling for x86_64/arm64 compiler regressions across Clang, Swift, and LLVM workflows.
Products
DiffSwarmdiffswarm.com
2026 – PresentAI code review for pull requests, in the terminal and in CI. It runs on the user's own Claude Code or Codex, so code goes only to their own AI provider. Homebrew install; paid plan.
RedlineAIred-line-ai.com
2026 – PresentContract review for legal teams on the Mac. Every finding links to the exact clause, and the review runs on the customer's own Claude Code or Codex. Team plan.
Open source
Tenstorrent TT-MetalTenstorrent bounty #30876
Nov 2025 – Apr 2026Bounty contributor
Ported MaskFormer Swin-B and DPT-Large to Tenstorrent Wormhole for public bounties; Tenstorrent accepted both as complete (not merged upstream). MaskFormer: 72 ms per image (about 14 FPS) on one N300 with the program cache, down from 1,070 ms at bring-up.
- Bounty #30876 accepted
- Bounty #31290 accepted
Swift Programming LanguageMerged Swift PRs
2021 – 2022Contributor
Contributed merged PRs to the Swift compiler around C++ interoperability, including getter/setter support and pointer type handling.
- PR #40842: Implemented C++ getters/setters interoperability (Merged Mar 2022)
- PR #40276: Fixed pointer type handling in C++ interop (Merged Nov 2021)
Skills
- Compilers & systems
- LLVM, Clang, Swift compiler, RISC-V vector (RVV), Code generation, Vectorization, TT-Metal / TTNN, Performance tuning
- Languages
- C++, Rust, Python, Swift, TypeScript, Assembly
- AI infrastructure
- Agent harnesses, Tool use and MCP, Structured outputs, Retrieval (RAG, pgvector), Evaluation harnesses, AWS Bedrock, Claude, OpenAI API
- Cloud & data
- AWS (ECS, Lambda, Step Functions, S3, RDS), Terraform, Docker, GitHub Actions, Cloudflare Workers, PostgreSQL
- Web & product
- React, Next.js, Stripe, iOS (ARKit)
Background
- Education
- B.S. Computer Engineering, San José State University (May 2020)
- Languages
- Arabic (native), English (fluent)
- Outside work
- Marathon, Olympic triathlon, Brazilian jiu-jitsu