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Slack

Staff/Senior Software Engineer, Cloud Network

Slack, San Francisco, California, United States, 94199

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Staff/Senior Software Engineer, Cloud Network Join to apply for the

Staff/Senior Software Engineer, Cloud Network

role at Slack.

5 days ago Be among the first 25 applicants.

This is a full-time staff engineering position based in the U.S.

About the Team The Cloud Network team is a globally distributed team of systems and software engineers across Australia, the U.S., and Canada, responsible for enabling the fast and reliable delivery of Slack to over 17M+ daily active users worldwide.

We manage Slack’s AWS cloud ecosystem and provide the foundational networking, account and identity access, and infrastructure-as-code platforms that power Slack’s operations at scale.

Our work spans ingress load balancing and intelligent traffic management—including our own fleet of software load balancers, cloud load balancing infrastructure, DNS and CDN services.

We also design and operate systems for DDoS detection and automated mitigation, ensuring Slack remains resilient against large-scale threats.

We are a small team making a large impact. We rapidly iterate and work closely with other teams in engineering ensuring resilient systems built to scale.

Job Responsibilities

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.

Develop and automate detection, mitigation, and response systems to defend against DDoS and other large-scale network threats.

Contribute to infrastructure-as-code and automation frameworks to improve reliability, repeatability, and efficiency.

Troubleshoot complex issues across applications, distributed systems, and networks in Linux-based environments.

Partner closely with AWS and other engineering teams to scale Slack’s worldwide infrastructure and adopt new cloud technologies.

Drive improvements in system observability, reliability, and ease-of-use by iterating quickly on designs and collaborating across engineering.

Participate in on-call rotations to ensure the availability and resiliency of critical Slack infrastructure.

Qualifications

Must have lawful permanent residency in the U.S.

8+ 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).

Bonus Points

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.

Accommodations If you require assistance due to a disability applying for open positions please submit a request via this Accommodations Request Form.

Posting Statement Salesforce is an equal opportunity employer and maintains a policy of non-discrimination with all employees and applicants for employment. This policy applies to recruiting, hiring, job assignment, compensation, promotion, benefits, training, performance assessment, discipline, termination, and everything in between. The same goes for compensation, benefits, promotions, transfers, reduction in workforce, recall, training, and education. Salesforce offers a variety of benefits to help you live well including: time off programs, medical, dental, vision, mental health support, paid parental leave, life and disability insurance, 401(k), and an employee stock purchasing program.

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