Senior Staff, Software Engineer - Slack Front End Infrastructure

To get the best candidate experience, please consider applying for a maximum of 3 roles within 12 months to ensure you are not duplicating efforts. 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. Slack’s Frontend Infrastructure team is responsible for the foundation of our desktop web client. We build and maintain the systems that power the user interface of one of the most widely used enterprise communication platforms in the world. We’re seeking a Senior Staff Engineer to help lead the next generation of frontend architecture — improving performance, scalability, developer productivity, and reliability at scale. As a technical leader on the team, you'll partner across product, platform, and infrastructure to guide architectural decisions, mentor engineers, and shape the direction of the frontend at Slack. Responsibilities: Lead cross-functional frontend initiatives to improve performance, scalability, resiliency, and developer productivity. Design, maintain, and evolve core frontend modules — including Slack’s WebSocket infrastructure, boot process, Redux/React layers, logging, and alerting systems. Drive key architectural decisions that adapt our frontend infrastructure to meet evolving product and platform needs. Identify and resolve communication and alignment challenges across teams and stakeholders. Represent and advocate for frontend technical strategy at an organizational level. Required Qualifications: Extensive experience with JavaScript and TypeScript in large-scale applications. Deep familiarity with browser performance profiling and debugging tools. Proficient in React, Redux, and modern web technologies, with an ability to explain trade-offs and architectural complexities clearly. Author code that establishes forward-looking patterns that multiple teams depend on and can contribute to effectively. Strong communication skills — written and verbal — with a collaborative and empathetic approach to cross-team work. Passion for mentorship, technical education, and knowledge sharing. A people-centered mindset — you understand that long-term technical success depends on the experience of the engineers who build on your work. A related technical degree required. Preferred Qualifications: Expertise in frontend performance: React/Redux optimizations, memory profiling, flame graph analysis, and tuning for production. Experience leading large-scale migrations, upgrades, or frontend modernization initiatives. Familiarity with persistence layers, service workers, caching strategies, and offline functionality. In office expectations are 10 days/a quarter to support customers and/or collaborate with their teams. Unleash Your Potential When you join Salesforce, you’ll be limitless in all areas of your life. Our benefits and resources support you to find balance and be your best, and our AI agents accelerate your impact so you can do your best. Together, we’ll bring the power of Agentforce to organizations of all sizes and deliver amazing experiences that customers love. Apply today to not only shape the future — but to redefine what’s possible — for yourself, for AI, and the world. Accommodations If you need a reasonable accommodation during the application or the recruiting process, please submit a request via this Accommodations Request Form. Please note that Salesforce uses artificial intelligence (AI) tools to help our recruiters assess and evaluate candidates’ resumes and qualifications throughout the recruiting process. Humans will always make any candidate selection and hiring decisions. Please see our Candidate Privacy Statement for more information about how we use your personal data and your rights, including with regard to use of AI tools and opt out options. Posting Statement Salesforce is an equal opportunity employer and maintains a policy of non-discrimination with all employees and applicants for employment. What does that mean exactly? It means that at Salesforce, we believe in equality for all. And we believe we can lead the path to equality in part by creating a workplace that’s inclusive, and free from discrimination. Know your rights: workplace discrimination is illegal. Any employee or potential employee will be assessed on the basis of merit, competence and qualifications – without regard to race, religion, color, national origin, sex, sexual orientation, gender expression or identity, transgender status, age, disability, veteran or marital status, political viewpoint, or other classifications protected by law. This policy applies to current and prospective employees, no matter where they are in their Salesforce employment journey. It also applies to recruiting, hiring, job assignment, compensation, promotion, benefits, training, assessment of job performance, discipline, termination, and everything in between. Recruiting, hiring, and promotion decisions at Salesforce are fair and based on merit. The same goes for compensation, benefits, promotions, transfers, reduction in workforce, recall, training, and education. In the United States, compensation offered will be determined by factors such as location, job level, job-related knowledge, skills, and experience. Certain roles may be eligible for incentive compensation, equity, and benefits. 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. More details about company benefits can be found at the following link: [apply contact hidden] to the San Francisco Fair Chance Ordinance and the Los Angeles Fair Chance Initiative for Hiring, Salesforce will consider for employment qualified applicants with arrest and conviction records. At Salesforce, we believe in equitable compensation practices that reflect the dynamic nature of labor markets across various regions. The typical base salary range for this position is $218,400 - $365,200 annually. In select cities within the San Francisco and New York City metropolitan area, the base salary range for this role is $263,200 - $401,400 annually. The range represents base salary only, and does not include company bonus, incentive for sales roles, equity or benefits, as applicable. Slack is a messaging app for business which lets you organize conversations into channels so everyone moves faster and stays in sync. It’s a platform that connects everyone in your business—employees, customers, and partners— securely with each other and integrates easily with apps you use every day to get work done. And everything happens, using any device, within a digital workspace that’s super easy to use. Ensuring a diverse and inclusive workplace where we learn from each other is core to Slack’s values. We welcome people of different backgrounds, experiences, abilities and perspectives. We are an equal opportunity employer and a pleasant and supportive place to work. Come do the best work of your life here at Slack.