Rebellions
rebellions.ai
Actively hiring
AI Compute & Inference
AI Chips & Accelerators
Processors, MCUs & AI Chips
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Overview
News
Technologies
Salaries
Products
People
Growth
Offices
Jobs
Financials
Funding and backers
Total raised
$424M
3 rounds on record
Latest round
$250M
Series C · 2025 · 15 mo ago
Team
501-1000
employees, estimated range
Hiring now
38
+3 posted in 30 days
Backers
2
Bon Angels Venture Partners, InterVest
The money's age
Due for its next round
15 months since the last round · and hiring
Momentum
18/100
hiring for its size, in the news
Last sign of life
this month
a posting or a news item
The story so fareach stage dated by its source: the company's releases, the press, registers, filings
Sep 16
Partnership AI chip startup Rebellions partners with ai& for Japanese AI infrastructure deployment · datacenterdynamics.com
Sep 16
First sales or marketing role [채용전환형 인턴] Marketing Designer
2025
Raised a round Series C $250M
2023
Raised a round Series B $124M
2021
Raised a round Series A $50M
2020
Founded
Tractionpublic signals, read monthly
Web presence
top 2%
of 133.2M domains by links, Common Crawl
Funding rounds
| Round | Date | Amount | Investors | Source |
|---|---|---|---|---|
| Series C | 2025 | $250M | — | |
| Series B | 2023 | $124M | — | |
| Series A | 2021 | $50M | — |
Founders and leadersfrom filings, registers and the company's site
Sunghyun ParkCo-Founder & Chief Executive Officer
Jinwook OhCo-Founder & Chief Technology Officer
Backed byfrom the funds' portfolios and accelerator catalogs
Bon Angels Venture Partners 
InterVest Investors in similar startupsfunds that back the companies most like this one
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How Rebellions hires
Truth index
C 65/100
Median time to fill
48 days
Ghost roles
58%
Stale roles
0%
Reposted roles
0%
Rebellions scores C on the Alion truth index (A is best, E worst), measured over 38 open roles re-checked against its own hiring board: 58% look like ghost listings, 0% have gone stale and 0% are the same role posted again. Its roles close in a median of 48 days. It measures how much of what this employer publishes turns into a real, finite search - not the employer as a workplace. How the index is computed
Overview
Rebellions is a South Korean semiconductor company founded in 2020 by former Wall Street quantitative engineers and IBM chip designers to build accelerators specialised for AI inference rather than training. Its ATOM processor targets efficiency per watt in data centre inference, and the follow-on REBEL design uses chiplet packaging to scale to large language model workloads. The company merged with Sapeon Korea, the AI chip unit of the SK group, to consolidate the domestic effort against foreign GPUs, becoming South Korea's first AI semiconductor unicorn and working closely with SK Telecom, KT and Samsung Foundry.
News
Report
Report
Nvidia Eyes Rebellions Deal as AI Inference Competition Heats Up
Nvidia is reportedly discussing a partnership, investment or acquisition involving South Korean AI chip startup Rebellions as inference demand grows.
Read more
Report
Nvidia and South Korean chip startup Rebellions discussing potential collaboration - report
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Report
Building AI Infrastructure with Rebellions
. The post Building AI Infrastructure with Rebellions appeared first on Rebellions.
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Report
RAISE Summit 2026 Keynote I The Most Profitable AI Inference Chip Runs Here
The post RAISE Summit 2026 Keynote I The Most Profitable AI Inference Chip Runs Here appeared first on Rebellions.
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Report
Domestic Technology-Based AI Full-Stack Solution for Patent Technical Document Classification and Summarization
Summary Wert Intelligence's keywert is an AI service capable of searching, classifying, and summarizing over 300 million global patent data entries. L&F integrated ATOM (a domestic AI semiconductor) with keywert powered by PlutoLM (a domestic AI model) to
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Report
NPU Server-Based Physical AI: Water Purification Robot Solution in the United Arab Emirates (UAE)
Summary ECOPEACE's "ECOBOT," an autonomous water pollutant detection and purification solution based on AI vision recognition. Deployment of Rebellions NPU servers within UAE local infrastructure to support ECOBOT operations. Demonstrated operational effi
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Report
2026 vLLM Korea Meetup
Hosted by the vLLM KR Community, with support from Rebellions, SqueezeBits, Red Hat APAC, and PyTorch Korea, the vLLM Korea Meetup 2026 was held in Seoul on April 2nd. This meetup proved to be much more than a standard tech event. Not only did it see stro
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Report
ISSCC A Quad-Chiplet AI SoC with Full-Chip Scalable Mesh over 16Gbps UCIe-Advanced Die-to-Die Interface for Large Scale AI Inferencing
View the Paper on IEEE Xplore The post ISSCC A Quad-Chiplet AI SoC with Full-Chip Scalable Mesh over 16Gbps UCIe-Advanced Die-to-Die Interface for Large Scale AI Inferencing appeared first on Rebellions.
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Report
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Tech stack
Technologies named in job postings at Rebellions over the last 12 months, by layer, with the share of postings for each.
Technologies in use
83
Postings analysed
37
Stack modernity
67/100AI adopter
Languages
C++43%
Python38%
SystemVerilog14%
Verilog11%
Frameworks & libraries
PyTorch14%
CUDA8%
PyTorch C++8%
UVM8%
Databases
InfluxDB3%
Cloud & platforms
Linux35%
RTOS22%
Kubernetes11%
vLLM11%
AI & ML
LLM19%
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Full Rebellions tech stack
83 technologies · by team · pay by technology · changes · similar stacks
Products
Model Zoo
The model zoo provides pre-optimised open models ready to run on the company's accelerators. It shortens the evaluation cycle for prospective customers.
rebellions.ai
RBLN SDK
The RBLN software development kit compiles and runs PyTorch and TensorFlow models on Rebellions hardware. Software maturity is the main barrier for any GPU alternative.
rebellions.ai
REBEL
REBEL is the company's next-generation chiplet-based accelerator aimed at large language model inference. It uses advanced packaging to scale memory bandwidth.
rebellions.ai
ATOM
ATOM is Rebellions' data centre inference accelerator, designed for efficiency per watt rather than raw training throughput. It is deployed with Korean cloud and telecom operators.
rebellions.ai
People
Sunghyun Park
Co-Founder & Chief Executive Officer
Sunghyun Park co-founded Rebellions in 2020 and leads it as chief executive. He previously worked as a quantitative engineer at Morgan Stanley after a doctorate in physics.
Jinwook Oh
Co-Founder & Chief Technology Officer
Jinwook Oh co-founded Rebellions and leads its chip architecture. He previously designed AI accelerators at IBM Research.
Names and roles come from public filings, company registers and the company's own site. Is this you? Correct or remove · How we handle this data
Growth
Hiring Momentum
48/100
Stable
Open positions
38
2 opened / 4 closed in 30 days
Median time-to-fill
39 days
faster than 33% of the market
ATS activity
Every ~4 hours
Today
Hiring Dynamics
+100%
Hiring Focus
The percentage next to each role is its share of the company's job openings over the last 90 days; the arrow shows the shift versus the previous period.
Hardware
31% ▼
DevOps
19% ▲
Support
13% ▲
Security
6% ▼
HR
6% ▼
Legal
6% ▲
Offices
Where the company hires and what each office is for
Cities
2
Hiring now
1
Countries
2
Busiest office
Seongnam
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Headquarters
Builds here
Office with open vacancies
No open vacancies right now Tap a pin for the office
Seongnam
South Korea
HQ
40 open roles 15 posted in 90 days 70% engineering 500-1000 est. staff
hires for Hardware, Backend, DevOps
경기도 성남시 분당구 정자일로156번길 6 Rebellions
Toranomon
Japan
Regional office
Toranomon Hills Business Tower 15F, 1-17-1 Toranomon, Minato-ku, Tokyo, Japan
Earlier presence
Seoul, South Korea
Jobs
Apply
≈ $58k – $138k per year (Estimated) • In office • 4+ years exp • Seongnam
ISO 27001
SOC 2
GDPR
DLP
Apply
≈ $64k – $178k per year (Estimated) • In office • 5+ years exp • PhD • Seongnam
C
C++
MPI
AI/ML
TPU
NCCL
NVLink
DevOps
HPC
Apply
≈ $94k – $218k per year (Estimated) • In office • 6+ years exp • PhD • Seongnam
C++
TensorFlow C++
PyTorch C++
AI/ML
TensorFlow
PyTorch
TPU
DevOps
RTOS
KVM
Linux
Apply
≈ $59k – $164k per year (Estimated) • In office • 6+ years exp • Seongnam
C++
RTOS
Linux
Apply
≈ $62k – $144k per year (Estimated) • In office • 4+ years exp • Bachelor's Degree • Seongnam
C++
RTOS
Linux
Apply
≈ $61k – $169k per year (Estimated) • In office • 5+ years exp • Bachelor's Degree • Seongnam
Rust
C++
Linux
Apply
≈ $66k – $196k per year (Estimated) • In office • 5+ years exp • Master's Degree • Seongnam
C
C++
MPI
AI/ML
TPU
NCCL
NVLink
DevOps
HPC
Apply
≈ $65k – $192k per year (Estimated) • In office • 5+ years exp • Master's Degree • Seongnam
Python
C++
TensorFlow C++
PyTorch C++
AI/ML
vLLM
CUDA Toolkit
JAX
Multimodal AI
AI Agents
Diffusers
TensorRT
TensorRT-LLM
Transformers
TensorFlow
PyTorch
LLM
CUDA
Triton
Hugging Face
MLIR
Apache TVM
DevOps
GitHub Actions
CI/CD
Docker
Kubernetes
Buildkite
Apply
≈ $66k – $195k per year (Estimated) • In office • 5+ years exp • Bachelor's Degree • Seongnam
Python
C++
PyTorch C++
AI/ML
vLLM
SGLang
TensorRT
TensorRT-LLM
Transformers
PyTorch
LLM
TPU
KV Cache
Apply
In office • Master's Degree • Seongnam
Python
C++
CUDA Toolkit
Computer Vision
Speech Recognition
OpenCL
CUDA
Apply
Apply
Financials
Total raised
$424M
Latest round
Series C
Funding rounds
3
Investors
5
Funding rounds
| Round | Announced | Amount | Valuation |
|---|---|---|---|
| Series C | 2025 | $250M | $1.4B |
| Series B | 2023 | $124M | — |
| Series A | 2021 | $50M | — |
Key Investors
Arm
Arm invested in Rebellions as a strategic partner on chiplet and interconnect standards. The two work together on data centre compute architectures.
arm.com
Korelya Capital
Korelya Capital backed Rebellions in its growth financings. The firm invests European and Korean capital across technology companies.
korelyacapital.com
Temasek
Temasek participated in Rebellions' Series C round. The Singapore state investor has taken positions across AI semiconductor companies.
temasek.com.sg
KT
KT led Rebellions' Series B financing and deploys its accelerators in its own cloud. The telecom operator backs domestic AI silicon as a sovereignty play.
kt.com
SK Telecom
SK Telecom became a major shareholder in Rebellions through the merger with its Sapeon chip unit. The operator is also one of the company's largest customers.
sktelecom.com