Data Infrastructure Engineer

San Francisco on site Until 8/22/2026 First posted March 18, 2026 Last posted March 18, 2026
Job description

About Alljoined

Alljoined is creating a future where humans are fully understood and augmented by technology. Our work solves the communication bottleneck between humans and computers by decoding thoughts from the brain, entirely non-invasively. We apply deep learning research to large scale EEG datasets to decode multimedia input, eventually moving to internal thought. We are state-of-the art in capabilities and are fully vertically integrated. Our goal is to develop a general consumer interface to completely transform how we can live our lives.

We are actively growing our founding engineering team to build the underlying infrastructure that makes this ambitious future a reality.

About the Role

As a Data Infrastructure Engineer, you will build the backend and hardware architecture that allows us to do high-quality and fast research. You'll be owning our entire data lifecycle, from building pipelines that process massive multimodal datasets (video, audio, text, time-series) to provisioning and managing both cloud and bare metal compute clusters we use to train on it. You will be powering our foundational model training by bridging the gap between physical neuro hardware and our central repositories, working alongside world-class researchers to ensure they have a high-throughput, low-latency pipeline straight to the GPUs.

You might be a good fit if you

  • Have 3+ years of production software engineering experience with deep expertise in systems-level architecture and languages like Python, Rust, C++, or Go.

  • Have built and maintained high-performance ETL pipelines capable of processing, buffering, and storing terabytes of daily unstructured data.

  • Are comfortable architecting, provisioning, and maintaining bare-metal local compute clusters, storage servers, and high-speed networking for intensive ML workloads.

  • Have a background in handling continuous, highly concurrent data streams from heterogeneous hardware peripherals without data loss.

  • Are capable of working across hybrid environments to define storage topologies, manage databases (TimescaleDB, ClickHouse), and sync massive datasets between on-premise edge servers and the cloud (AWS/GCP/Azure).

  • Enjoy owning the entire technical lifecycle of infrastructure, from optimizing low-level I/O bound operations to production deployment.

Strong candidates may have

  • A deep understanding of modern ML frameworks (PyTorch/TensorFlow) and know how to build datasets that maximize and saturate GPU utilization.

  • Experience managing networking for distributed GPU training (InfiniBand, RoCE) or optimizing zero-copy networking and shared memory.

  • Built infrastructure involving programmatic video processing (FFmpeg, GStreamer, OpenCV)

Compensation Range

$140,000 - $180,000/year

While this represents our expected range based on market data, final compensation will be determined based on your specific skills and experience and may be outside this range.

Benefits

  • Competitive equity compensation at a seed stage startup

  • Options for housing support

  • Visa sponsorship

  • 3% 401k matching

  • Health insurance

Compensation (from employer):
$140K – $180K • Offers Equity

About this role

Summary

Build and maintain high-performance data infrastructure and hardware for ML research.

Job title

Data Infrastructure Engineer

Experience level

3+ years

Industry

technology

Location requirements

San Francisco; remote not allowed

Salary

$140,000 - $180,000/year

Management role

No

Skills & keywords

Required skills

PythonC++ETL pipelinescloud computinghardware management

Preferred skills

deep learningML frameworksnetwork managementvideo processing

Specializations

systems architecturedata pipelinescloud infrastructurehardwaremachine learning
Locations

Structured locations inferred from the posting.

San Francisco, CA, USA

On-site City