Principal Software Engineer

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 a Principal Software Engineer. About the job Twilio is looking for a Principal Software Developer embedded within the Product organization to help drive growth for the next generation of the Twilio platform - designed to power the agentic future of customer conversations. In this role, you will serve as a hands-on, customer-facing technical expert, collaborating directly with Product Managers, Engineers, Designers, GTM, and Developer Evangelism. You will deliver code, often open source, to demonstrate the power of Twilio, help prove product market fit, and as a first-best user of Twilio's APIs, show the art of the possible both internally to other teams and publicly to the world. This person will help us get our ideas out into the world and provide hands-on feedback in the earliest stages of product development, yielding signals that will directly impact the trajectory of what and how we build. Responsibilities In this role, you'll: • Design and deliver high-quality, solution-oriented code, including quickstart repos, "Hello World" POCs, and demos, that serve as inspiration and a model for builders to adopt. • Be the high-bandwidth bridge between the market and the roadmap. You'll translate raw customer friction and "agentic" trends into actionable product strategy, ensuring we build what builders actually need. • Build brand trust and authority by delivering high-impact conference talks, producing technical deep-dives and blogs, and contributing to open source projects that demonstrate the product's value to the broader developer ecosystem. • Actively partner with PMs, GTM, and Engineering teams to provide actionable feedback on technical and product direction, user experience, pain points, and systemic challenges. Help assemble complex Twilio products into cohesive solution blueprints. • Translate complex technical concepts for diverse audiences including product managers, executives, non-technical stakeholders, and community members. • Work very closely with Solution Engineers, Developer Evangelists, and Customers to help them understand how to assemble Twilio products for agentic and non-agentic applications. Qualifications Twilio values diverse experiences from all kinds of industries, and we encourage everyone who meets the required qualifications to 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: • Systems Mastery: 7+ years architecting and operating high-scale cloud systems; expert in building resilient, distributed architectures. • AI and Polyglot Expert: Deep production experience in JS/TS and Python using AI-assisted development, setting the bar for modern, type-safe, and AI-integrated codebases. • API & DX Excellence: Proven mastery of RESTful design, setting the global standard for "best-in-class" Developer Experience. • Strategic Roadmap Influence: Ability to synthesize complex market friction into formal proposals that pivot engineering priorities. • Public Technical Voice: A recognized authority with a portfolio of high-impact open source, technical keynotes, or publications. • 0-to-1 Execution: A "Builder at Heart" capable of shipping the foundational JS/TS and Python reference code that inspires thousands. • Active in Cloud or AI open-source communities with documented projects, contributions, and thought leadership. Desired: • AI/Agentic Experience: Documented implementation of LLMs, RAG, and agentic frameworks into production-ready developer tools. Location This role will be remote, but is not eligible to be hired in CA, CT, NJ, NY, PA, WA. Travel We prioritize connection and opportunities to build relationships with our customers and each other. For this role, approximately 20% travel is anticipated to help you connect in-person in a meaningful way. What We Offer Working at Twilio offers many benefits, including competitive pay, generous time off, ample parental and wellness leave, healthcare, a retirement savings program, and much more. Offerings vary by location. Compe