T

Toss

Fintech super-app for payments and banking

IDC Infrastructure Engineer - Network & System

System Administration +1Confirmed live in the last 24 hours
Full-timeSeoul, South KoreaNo salary listed

About the Job

Requirements

  • At least 5 years of data center (IDC) or infrastructure design and operations experience.
  • Experience designing data center network architectures, including Spine-Leaf and redundancy.
  • Understanding of server and storage hardware and operating systems, including Linux, Windows, and hypervisors.
  • Ability to design based on hardware-level understanding of NICs, cabling, and switch ASICs.
  • Experience with data center floor space, rack layout, and power and space design and operations.
  • Experience across data center operations, including large-scale equipment deployment, relocation, and asset management.
  • Ability to resolve incidents by considering both physical and logical perspectives.
  • Ability to collaborate with vendors and internal teams.
  • Experience with equipment introduction proofs of concept, vendor evaluation, and performance verification.
  • Experience writing infrastructure standards documentation, such as design guides and operating procedures.

Responsibilities

  • Design hardware architectures for network and server infrastructure, and establish equipment selection criteria and deployment standards.
  • Design data center network architectures, including Spine-Leaf and redundancy, and server and storage configurations.
  • Define bandwidth requirements, NIC specifications (10G/25G/100G/400G), cabling (OM, LR/SR, MPO), and switch port configurations.
  • Design physical infrastructure considering data center rack space, power, and floor space.
  • Define and manage infrastructure standards for equipment models, firmware, and configuration templates across the company.
  • Install, configure, operate, and continuously improve servers, storage, and network equipment.
  • Plan and execute equipment delivery, removal, installation, and relocation work while managing quality and safety.
  • Perform cabling, equipment installation, and configuration with vendors, and manage technical standards and quality.
  • Monitor data center conditions, including power, temperature, network, and equipment status, and proactively respond to abnormal indications.
  • Provide initial incident response, analyze root causes, and own prevention of recurrence.
  • Analyze and lead resolution of complex incidents spanning network, systems, and physical infrastructure.
  • Manage the lifecycle of data center assets, including servers, network equipment, and power equipment, and maintain data accuracy.
  • Develop and optimize medium- and long-term data center operating plans considering capacity, power, and space.
  • Coordinate schedules, quality, and costs with colocation providers and vendors.
  • Automate repetitive work such as firmware upgrades, configuration deployment, and asset collection.
  • Build monitoring and CMDB integration based on SNMP and REST APIs.
  • Establish and continuously improve operating standards, procedures, and policies.

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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