Microcode SW Engineer

2 days ago

Tel Aviv, Tel Aviv, Israel GSI Technology Full time ₪104,000 - ₪130,878 per year

Microcode SW Engineer for LLM / VLM applications

Location: Ramat Hahayal , Tel -Aviv

Employer: GSI Israel

Term: Full-time Position

GSI is pioneering the Gemini APU—a cutting-edge, game-changing processor designed to accelerate compute-intensive tasks like large language models, machine learning, advanced image processing, and radar imaging.

If you're passionate about architecting high-performance software systems, implementing advanced algorithms, and drilling into low-level technical details, this is the role for you

We're seeking a dynamic and fast-learning engineer with a passion for diving deep into large language model implementations, and a keen focus on performance optimization and efficient execution

What you'll be owning

  • Deep dive into our cutting edge associative HW processing unit
  • Design, build, and optimize low-level microcode—including instruction scheduling, memory access patterns, and control flow—for our custom Associative Processing architecture. You'll be working directly with a novel instruction set and hardware behaviors to craft routines that unlock parallelism and maximize throughput. This involves writing cycle-aware logic for compute units, managing hardware state transitions, and tuning for ultra-low latency across deeply pipelined data paths
  • Prototype, and iterate on diverse workloads—including transformer-based LLM inference, OpenCV pipelines, FFTs, and edge ML use cases—pushing the boundaries of distributed compute and memory co-location
  • Team up across disciplines to turn wild ideas into reliable, high-performance code
  • Squash bugs and bottlenecks using analyzers, profilers, and trace tools, always backed by data
  • Level up our CI, testing, and docs, keeping dev velocity high and friction low
  • Adapt fast, dive into unfamiliar tech, and thrive in the pivot-friendly chaos of startup life

Qualifications

  • B.Sc. or M.Sc. in Computer Science, Electrical Engineering, Software Engineering
  • Experience Path 1:
  • 5+ years of professional C/C++ development focused on low-level programming or microcode for hardware processing units (e.g., CPU, GPU)
  • Experience Path 2:
  • 5+ years in RTL design/verification plus 2+ years of hands-on C/C++ development

Required Technical Expertise

  • Proven track record developing and optimizing software algorithms with deep consideration for hardware architecture, memory bandwidth, and system constraints
  • Strong understanding of processor architecture fundamentals—caches, pipeline stages, execution units, and memory hierarchies
  • Ability to interpret detailed hardware specifications and translate them into robust, efficient software solution

Preferred Qualifications / Additional Skills

  • Practical experience with microcode development and optimization
  • Proficiency in assembly language programming
  • Strong understanding of deep learning or computer vision algorithms, architectures, and frameworks
  • Demonstrated ability to port and refine complex algorithms in performance-sensitive, low-level environments
  • Experience with Python scripting for tool creation, data analysis, and automated testing workflows
  • Solid foundation in compiler theory, including design principles and code generation techniques
  • Practical experience writing performance-critical code, including firmware, compute kernels, and device drivers

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