Staff, Software Engineer (L4) - Email

Who we are At Twilio, we’re shaping the future of communications, all from the comfort of our homes. We deliver innovative solutions to hundreds of thousands of businesses and empower millions of developers worldwide to craft personalized customer experiences. Our dedication to remote-first work , and strong culture of connection and global inclusion means that no matter your location, you’re part of a vibrant team with diverse experiences making a global impact each day. As we continue to revolutionize how the world interacts, we’re acquiring new skills and experiences that make work feel truly rewarding. Your career at Twilio is in your hands. We use Artificial Intelligence (AI) to help make our hiring process efficient. That said, every hiring decision is made by real Twilions! . See yourself at Twilio Join the team as our next Staff, Software Engineer (L4) - Email Platform Who we are & why we’re hiring Twilio powers real-time business communications and data solutions that help companies and developers worldwide build better applications and customer experiences. Although we're headquartered in San Francisco, we're on a journey to becoming a globally antiracist company that supports diversity, equity & inclusion wherever we do business. We employ thousands of Twilions worldwide, and we're looking for more builders, creators, and visionaries to help fuel our growth momentum. About the job This position is needed to fulfill the critical role of a Software Engineer within Twilio Sendgrid, to be both hands-on in creating, deploying and managing highly available, very large scale distributed systems. Our systems processed 12 billion emails on Black Friday 2025 and we continue to scale! You will be a key contributor in one or more of these areas - Redesigning backend services to improve scalability, strengthening service security to keep up with changing threats. Delivering solutions that enhance the customer journey and developing new product offerings that provide actionable insights into the health of customers’ email programs. Responsibilities In this role, you’ll: Build and operate your team's services in a distributed production environment used by millions of customers across the globe. Collaborate routinely with other team members as well as members of the wider organization to tackle complex problems in distributed computing. Help, guide, mentor and influence more junior members of the team in their career. Communicate effectively to executives, to your peers, and internally among your team. Constantly look for areas of improvement in systems and optimize. Be an advocate for balancing tech debt and feature development Qualifications Not all applicants will have skills that match a job description exactly. Twilio values diverse experiences in other industries, and we encourage everyone who meets the required qualifications to apply. While having “desired” qualifications make for a strong candidate, we encourage applicants with alternative experiences to also apply. If your career is just starting or hasn't followed a traditional path, don't let that stop you from considering Twilio. We are always looking for people who will bring something new to the table! Required: 8+ years of relevant experience building highly available, scalable, fault tolerant and maintainable distributed systems to help deliver mission critical applications. Strong experience with Golang, Java, or similar technologies Demonstrated track record in service ownership Operational excellence focussed mindset: Understands value of monitoring with metrics and alerting. Knows how to build resilient systems that are maintainable for years to come. Excellent written and spoken communication skills. Ability to articulate and present vision to both technical and non technical stakeholders. Strong technical and leadership chops - Led technical decisions for your team and influenced technical decisions across your functional domains on large scale projects. Led