Software Engineer, AI Inference Platform

Elastixai Inc.
Seattle, WA, United States
1 day ago
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Role details

Contract type
Permanent contract
Employment type
Full-time (> 32 hours)
Experience level
Experienced
Experience required
3 years minimum
Working hours
Regular working hours
Job source

Tech stack

Abstraction Layers Application Programming Interfaces (APIs) Artificial Intelligence C++ (Programming Language) Nvidia CUDA Computer Engineering Shard (Database Architecture) Software Debugging Distributed Systems Memory Management Design of User Interfaces Python (Programming Language)
+13 more
Open Source Technology PCI Express Performance Tuning System Programming Pytorch Large Language Models Containerization Kubernetes Information Technology Low Latency Machine Learning Operations TensorRT Docker

Job description

We’re looking for a systems-minded AI Software Engineer to join our core inference platform team. You’ll design and extend the low-level serving stack - hacking open-source frameworks like vLLM, SGLang, and TensorRT-LLM, building new model sharding and scheduling logic, and integrating deeply with our proprietary AI accelerator. This role sits at the intersection of ML systems, compiler/runtime engineering, and hardware-software co-design., * Architect, extend, and optimize core components of our AI serving platform for throughput, latency, and scalability.

  • Customize open-source serving frameworks (e.g., vLLM) for proprietary model ingestion and accelerator integration.
  • Develop efficient model partitioning, scheduling, and memory management strategies for multi-device inference.
  • Collaborate with ML engineers on model export and runtime optimization (quantization, graph transforms).
  • Work closely with hardware engineers to influence accelerator interface design and performance tuning.
  • Build APIs and runtime tools enabling flexible, PyTorch-native model deployment on our infrastructure.
  • Profile, debug, and optimize across the full stack - from Python orchestration to C++ kernels and PCIe drivers.

Requirements

  • BS/MS/PhD in Computer Science, Electrical/Computer Engineering, or related field.
  • 3+ years of professional experience in systems programming, ML infrastructure, or distributed inference.
  • Proficient in C++ and Python, with strong debugging and performance analysis skills.
  • Deep familiarity with one or more LLM serving frameworks (vLLM, SGLang, TensorRT-LLM, DeepSpeed-Inference, etc.).
  • Understanding of model deployment internals - token scheduling, KV caching, batching, and pipelined inference.
  • Comfortable working close to the hardware abstraction layer - CUDA, PCIe, memory management, or runtime scheduling.
  • Strong collaboration and communication skills; ability to work cross-functionally in a fast-paced startup environment., * Experience with hardware-aware ML optimization, compiler/runtime integration, or accelerator SDKs.
  • Hands-on experience profiling GPU/accelerator workloads.
  • Familiarity with containerized deployments (Docker/Kubernetes).
  • Exposure to distributed systems or large-scale inference clusters.
  • Contributions to open-source ML or serving frameworks.

Benefits & conditions

  • A dynamic and collaborative work environment and the change to have a significant impact on new technology
  • The opportunity to work on challenging problems at the intersection of ML, software, and systems.
  • Competitive compensation and startup equity package
  • Comprehensive medical, dental, and vision coverage (100% paid by employer)
  • Life insurance and AD&D
  • Flexible Time Off (FTO)
  • 12-paid holidays
  • Paid parental leave
  • Gym or fitness benefit
  • Commuter benefit
  • Weekly catered lunches in the office
  • Investment in employee learning & development

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