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Rebellions Tech Stack

5nm AI accelerator cards and servers with dataflow architecture for inference

Semiconductor Manufacturing Seoul 201–500 employees Founded 2020 Privately Held

Rebellions manufactures 5nm AI accelerator hardware optimized for HBM and chiplet layouts, paired with a full-stack software layer supporting PyTorch 2.x and vLLM. The company is in mass production and already shipping thousands of ATOM cards to telecom operators. Hiring is heavily skewed toward senior engineering (9 of 15 open roles), with active projects spanning driver development, network scaling POCs, and production system code—indicating a transition from R&D into manufacturing operations and supply-chain scaling.

Tech Stack 38 technologies

Core StackC++ Linux TensorFlow PyTorch Python TypeScript JavaScript Next.js C PCIe IOMMU RTOS GPU TPU KVM SR-IOV Ethernet RDMA InfiniBand TCP/IP UDP IEEE 802.3 Bash Robot Framework ARM Cortex-A RISC-V C/C++ NCCL MPI NVLink+7 more

AdoptingvLLM

What Rebellions Is Building

◆Challenges

Supply chain lead time management
Partner sales pipeline management
Improving software efficiency
Enhancing robustness
User-friendliness of software
Improving it asset lifecycle management
Performance bottlenecks in npu communication
Preparing ipo documents
Managing regulatory filings
Monitoring regulations

▲Active Projects

Proof-of-concept solution to validate network based ai scale up and scale out technology
Early development and participation in new soc and hardware bring ups
Collaborate to enable novel network architecture
Ai server hardware procurement strategy
Supply chain lead time optimization
Partner sales pipeline management
Device driver development for rtos environments
Poc software for ai/ml task scheduling and hardware accelerators
Bsp platform for multiple architectures
Production system code development

Hiring Activity

Steady15 roles · 5 in 30d

Department

Engineering

11

Ops

2

Finance

1

Manufacturing

1

Seniority

Senior

9

Mid

5

Manager

1

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About Rebellions

Rebellions is a Seoul-based AI chip startup founded in 2020, designing and manufacturing 5nm AI accelerator cards, servers, and rack-scale systems for datacenters. The product includes custom ASIC hardware optimized for memory bandwidth and chiplet interconnect, plus a proprietary software stack that integrates with existing AI frameworks (PyTorch, vLLM). The company has begun mass production and is already deployed in commercial AI services at telecom operators. Current operational focus spans hardware bring-up, device driver support, supply-chain lead-time optimization, and early-stage partnership sales.

HeadquartersSeoul

Company Size201–500 employees

Founded2020

Hiring MarketsSouth Korea

Frequently Asked Questions

What is Rebellions' tech stack?

Core languages: C, C++, Python. System-level: Linux, RTOS, KVM, SR-IOV, PCIe, IOMMU. Networking: Ethernet, RDMA, InfiniBand, TCP/IP. AI frameworks: PyTorch, TensorFlow, NCCL, MPI. Adopting vLLM.

What is Rebellions working on?

Mass-producing 5nm accelerator cards (ATOM), scaling network architecture via POCs, driver development for RTOS, AI/ML task scheduling software, and supply-chain optimization to reduce lead times.