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Toss

Fintech super-app for payments and banking

Systems Engineer – GPU

Platform EngineeringConfirmed live in the last 24 hours
Full-timeSeoul, South KoreaNo salary listedIn-person

About the Job

Requirements

  • At least 3 years of experience as a systems engineer operating large-scale Linux server infrastructure.
  • Deep hands-on experience in at least one of operating systems, kernels, or drivers, including solving problems in that area.
  • Experience building and operating HPC or AI clusters using GPU servers.
  • Experience automating recurring operations with code and documenting standards.
  • Ability to collaborate with multiple teams based on technical reasoning.

Responsibilities

  • Design, build from bare metal, and operate GPU computing cluster infrastructure.
  • Track current GPU lineups and architecture changes; validate adoption through proofs of concept and benchmarks; and develop the infrastructure roadmap.
  • Configure standard operating systems and software stacks for GPU servers, and reproducibly provision large numbers of nodes.
  • Design high-performance networks and storage to optimize cluster performance.
  • Monitor GPU resources, diagnose failures, identify root causes, respond to incidents, and automate operations.
  • Use utilization and capacity metrics to determine when to expand, considering power, cooling, racks, and other infrastructure conditions to ensure stable expansion.

Desired Qualifications

  • Understanding of GPU computing technologies such as CUDA, NCCL, NVLink, and RDMA.
  • Experience designing and operating high-speed networks based on InfiniBand or RoCE.
  • Hands-on experience with hardware-level components such as firmware, BIOS, and BMC.
  • Experience building monitoring systems using tools such as DCGM, Prometheus, and Grafana.
  • Experience collaborating with AI/ML organizations or understanding MLOps pipelines.
  • Experience designing large-scale computing environments with consideration for physical infrastructure such as data-center power, cooling, and racks.

About the Company

Toss

Fintech super-app for payments and banking

Toss is a South Korean financial services platform that started as a peer-to-peer money transfer service and has grown into a digital 'super app' for personal finance. Its products are accessed through one mobile interface that unifies bank accounts, credit cards, loans, investments, and other financial services, including its own Toss Bank and Toss Securities. It differentiates itself by offering a broad, integrated ecosystem—combining digital banking, asset management, and brokerage services under one roof and running its own banking and securities units. Its goal is to become the leading consumer finance platform in South Korea while expanding its user base globally.

Company size
1,001-5,000
Company stage
Series G
Total funding
$1.5B
Headquarters
Seoul, South Korea
Founded
2011

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