Sr. Software Engineer, Cloud Infrastructure - Slack

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Job Category

Software Engineering

Job Details

About Salesforce

Salesforce is the #1 AI CRM, where humans with agents drive customer success together. Here, ambition meets action. Tech meets trust. And innovation isn’t a buzzword — it’s a way of life. The world of work as we know it is changing and we're looking for Trailblazers who are passionate about bettering business and the world through AI, driving innovation, and keeping Salesforce's core values at the heart of it all.

Ready to level-up your career at the company leading workforce transformation in the agentic era? You’re in the right place! Agentforce is the future of AI, and you are the future of Salesforce.

About the Team

At Slack, the Cloud Engineering team is the backbone of our infrastructure — a dynamic group of Cloud Engineers, Financial Analysts, and AWS Subject Matter Experts united by a single mission: keeping Slack fast, reliable, and cost-efficient for millions of users worldwide.

We tackle unique, large-scale challenges that very few engineers ever get to work on. From designing the systems that power global real-time communication to writing software that brings deep visibility into our cloud infrastructure, our work has direct impact every single day. We partner with teams across Slack to maximize cloud value, champion cost-conscious engineering, and build a platform that scales with our ambitions. If you're energized by high availability, resilience, and the right technology choices — this is the team for you.

Slack has a positive, diverse, and supportive culture — we look for people who are curious, inventive, and work to be a little better every single day. In our work together we aim to be smart, humble, hardworking and, above all, collaborative. If this sounds like a good fit for you, read on ahead!

What you will be doing:

• Lead software projects end-to-end — from scoping and architecture through delivery, iteration, and long-term ownership

• Architect and build a next-generation internal platform that gives engineering teams a powerful foundation to innovate quickly

• Deliver cutting-edge solutions leveraging containerization, virtualization, and a broad suite of AWS services

• Author, extend, and improve Terraform modules that power infrastructure-as-code across Slack

• Design and implement an in-house system to deploy, manage, and scale applications for service owners

• Partner directly with development teams to identify performance bottlenecks and drive cloud efficiency improvements

• Build strong, trusted relationships with service owners — serving as a go-to advisor on cloud architecture and best practices

• Champion a culture of platform efficiency by sharing knowledge, writing runbooks, and leading internal enablement sessions

• Mentor and grow junior engineers, scaling the impact of the team through thoughtful technical leadership

• Make a measurable financial impact — driving millions of dollars in cloud cost savings annually

• Participate in on-call rotation and collaborate with our operations team to triage and resolve production incidents with urgency and precision

• Build observability and introspection tooling that gives engineers deep, real-time visibility into system health and bottlenecks

What you should have:

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

• Genuine curiosity about how cloud infrastructure works — and a passion for sharing that knowledge with your team

• Proven ability to analyze, optimize, and improve reliability in high-traffic, production internet applications

• A strong mentoring instinct and commitment to engineering excellence: you lead by example in code reviews, testing, design docs, and debugging

• Deep, hands-on AWS experience — broad familiarity across many services with deep expertise in at least a few

• Demonstrated experience deploying cloud applications and managing infrastructure-as-code using Terraform and/or CloudFormation

• Strong ability to troubleshoot and debug complex issues across infrastructure, applications, and distributed systems

• A track record of professional software development you're proud of — you can point to real-world systems you've built, scaled, and im