Sr. Software Engineer, Cloud Network - Slack

Salesforce Salesforce · Enterprise · Washington DC Metro, VA · Remote

Salesforce is hiring a Sr. Software Engineer for their Cloud Network team, focusing on the infrastructure that powers Slack. The role involves designing, building, and operating global cloud networking systems, including load balancing, DNS, CDN, and traffic management. Responsibilities also include developing DDoS defense systems, contributing to infrastructure-as-code, and ensuring system observability and reliability. The role requires strong experience in distributed systems, cloud networking, and Linux environments.

What you'd actually do

  1. Design, build, and operate the systems that power Slack’s global cloud networking stack—including ingress/egress load balancing, service-to-service networking, DNS, CDN, and traffic management.
  2. Develop and automate detection, mitigation, and response systems to defend against DDoS and other large-scale network threats.
  3. Contribute to infrastructure-as-code and automation frameworks to improve reliability, repeatability, and efficiency.
  4. Troubleshoot complex issues across applications, distributed systems, and networks in Linux-based environments.
  5. Partner closely with AWS and other engineering teams to scale Slack’s worldwide infrastructure and adopt new cloud technologies.

Skills

Required

  • 5+ years of experience in software engineering, with a strong focus on distributed systems, cloud-native applications, and microservices.
  • Hands-on experience with cloud providers such as AWS or GCP
  • Strong knowledge of TCP/IP, DNS, DNSSEC, and related network protocols.
  • Proven track record of building tools, automation, or services using one or more programming languages (e.g., Go, Ruby, Python, C/C++).
  • Extensive experience with infrastructure-as-code (Terraform, CloudFormation).
  • Prior experience deploying, operating, and debugging server software on Linux.
  • Strong interpersonal and communication skills; able to explain complex technical concepts to designers, support staff, and fellow engineers.
  • A BS, MS, or Ph.D. in Computer Science, Engineering, or related technical field (or equivalent work experience).

Nice to have

  • A domain expert within the AWS ecosystem (NLB, VPC / IAM / S3 / EC2)
  • Experience contributing to or operating large-scale, highly available production systems.
  • Knowledge of DDoS detection/mitigation strategies and automation frameworks.
  • Interest in cost optimization and operational efficiency at cloud scale.

What the JD emphasized

  • U.S. Citizenship or Permanent Residency (Green Card holder). We are unable to provide visa sponsorship for this role.