Salary
≈ $57k – $143k per year (Estimated)
Location
In office (Seongnam)
Seniority
Senior · 5+ years exp
Confirmed on the employer's own hiring board on Sep 25, 2026. First seen by Alion on Apr 13, 2026. Rebellions scores C on the Alion truth index.
Overview
Company
Impact
Profile match
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.
Responsibilities and Opportunities
- Designing and implementing key components of a communication software stack including collective communication library and driver specifically engineered for our NPU and related communication topologies
- Contributing to the technical design, API definition, and performance optimization of the communication stacks across software and hardware layers
- Collaborating with hardware and software teams to analyze performance bottlenecks and influence future NPU and interconnect topology
Key Qualifications
- Minimum of 5 years of professional experience in systems software development, or a Ph.D. in a related field (HPC, Parallel Computing, Computer Architecture, Collective Communication, or equivalent)
- Strong collaboration and problem-solving skills for complex technical issues
- Proficiency in low-level systems programming (C/C++) and understanding of OS internals and networking
- Proven experience developing and delivering complex, high-performance, and reliable software in a collaborative environment
- Understanding of hardware accelerators (GPUs, TPUs, or other NPUs) and their performance characteristics
Ideal Qualifications
- Solid understanding of collective communication algorithms (e.g., All-Reduce, All-Gather, Reduce-Scatter) and their performance characteristics
- Prior experience contributing to high-performance communication libraries (e.g., NCCL, MPI), parallel runtimes, and/or high-performance networks (e.g., RDMA/RoCE, NVLink, CXL)
- Understanding of interconnect topologies and Network-on-Chip (NoC) architectures
전형절차
- 서류전형 > On-line 인터뷰(Culture-fit, 코딩테스트 포함) > On-site 인터뷰(기술 발표) > 평판 조회 > 처우 협의 > 최종 합격
- 전형절차는 직무별로 다르게 운영될 수 있으며, 일정 및 상황에 따라 변동될 수 있습니다.
- 전형 일정 및 결과는 지원 시 작성하신 이메일로 개별 안내드립니다.
참고사항
- 본 공고는 모집 완료 시 조기 마감될 수 있습니다.
- 지원서 내용 중 허위사실이 있는 경우에는 합격이 취소될 수 있습니다.
- 채용 및 업무 수행과 관련하여 요구되는 법령 상 자격이 갖추어지지 않은 경우 채용이 제한될 수 있습니다.
- 보훈 대상자 및 장애인 여부는 채용 과정에서 어떠한 불이익도 미치지 않습니다.
- 담당 업무 범위는 후보자의 전반적인 경력과 경험 등 제반사정을 고려하여 변경될 수 있습니다. 이러한 변경이 필요할 경우, 최종 합격 통지 전 적절한 시기에 후보자와 커뮤니케이션 될 예정입니다.
- 채용 관련 문의사항은 아래 메일 주소로 문의바랍니다.
- [email protected]
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