Software Engineer, Cloud Networking

A marketplace app company focused on circulating all forms of value to unleash potential in people.
Minato City, Tokyo, Japan
Cloud
Senior Software Engineer
Hybrid
1,000 - 5,000 Employees
5+ years of experience
E-Commerce

Description For Software Engineer, Cloud Networking

Mercari, a leading marketplace app company, is seeking a Software Engineer specializing in Cloud Networking to join their team in Tokyo. The role is part of the Networking Platform Team, which is crucial in making communication between customers and systems smooth, reliable, and secure. The team manages the entire network infrastructure from CDN to physical data centers, utilizing modern technologies like Kubernetes and Istio service mesh.

The ideal candidate will be working on cutting-edge projects including service mesh implementation, Kubernetes cluster migration, and building cloud networking foundations for global scaling. This position offers a unique opportunity to work with large-scale systems and impact both developers and end users through end-to-end ownership of networking solutions.

The company culture is built on strong engineering principles including Passion For The Product, Grow Together, Solve Through Mechanisms, and Collaborate Openly. Mercari offers a flexible work environment with full flextime and no core hours, based in their Roppongi office.

This role requires a strong background in networking fundamentals, cloud platforms (GCP/AWS), and modern infrastructure tools. The successful candidate will be involved in critical projects like implementing service mesh, managing Kubernetes clusters, and establishing robust networking foundations for global scale operations.

Working at Mercari means joining a company with a clear mission to "Circulate all forms of value to unleash the potential in all people." The company values diversity and inclusion, ensuring equal opportunities for all candidates regardless of their background.

Last updated 5 days ago

Responsibilities For Software Engineer, Cloud Networking

  • Develop and evolve cloud networking and infrastructure solutions to support the entire business
  • Design and implement networking solutions for global and multi-region strategies
  • Enhance the system to reduce operational engineering costs
  • Support migration to and adoption of new platform features and tools
  • Work with SRE and Security teams to improve platform security and reliability
  • Automate daily platform operations
  • Collaborate with internal developers to understand their needs and provide solutions

Requirements For Software Engineer, Cloud Networking

Kubernetes
Python
Go
  • Strong foundational networking expertise (TCP/IP, IPAM, OSI Layers 4-7, cloud routing, CDN, DNS, TLS, HTTP)
  • Cloud networking experience with GCP and/or AWS in production environments
  • Linux and Kubernetes networking experience in production environments
  • Proficient with network proxies (Envoy, HAProxy, Nginx) and regional/VPC routing
  • Able to automate network-related workflows using Python, Bash scripts
  • Experience with Infrastructure as Code
  • Experience writing design docs and making tech decisions
  • English: Proficient (CEFR - C1)
  • Japanese: Basic (CEFR - A2) optional

Benefits For Software Engineer, Cloud Networking

  • Full Flextime (no core time)

Interested in this job?

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