Perplexity

Build and evolve scalable, reliable AI systems managing orchestration, context, and performance. | 2+ years experience with large-scale AI systems, strong Python proficiency, and relevant degree required. | About Perplexity AI In 2026, we launched Computer, the defining product for the new era of agentic AI. We’ve scaled beyond the millions of people using Perplexity every day for research, shopping, investing and curiosity into a new paradigm of using AI to transform knowledge into action. As an engineer at Perplexity, your role will be to build products and systems that define how AI empowers humans to think, decide and act. You’ll ship fast and work between both product and infrastructure advancements in our technology. Why Perplexity is different Craftsmanship. We build high quality, tasteful products targeting both the AI native and AI curious. Ownership. You identify the problem, design the solution and ship it. Entrepreneurship. We think like founders, act with urgency, and hustle to deliver for each other and our users. Scholarship. Work among highly talented peers, pursuing knowledge and truth, upleveling ourselves, our teams, and our products. Partnership. We amplify each others' strengths, break down silos, and give selflessly to help our colleagues deliver excellence. About the Role Perplexity is looking for a software engineer to evolve the core agent harness that powers our flagship answer experience. You will combine strong product judgment with both single- and multi-agent engineering paradigms to help us build the world’s foremost agent for accumulating knowledge and answering our society’s most challenging questions. You will translate user needs and quantitative insights into improvements to the agent’s orchestration, context management, performance, and reliability. The ideal candidate understands that reliable agents at global scale require excellent observability, rigorous evaluation, and a developer experience that makes failures easy to reproduce and fix autonomously through methods like autoresearch. The same harness will power the training and evaluation of new models, creating a tight feedback loop between production experiences and model improvement that is central to Perplexity’s mission. Required Qualifications 2+ years of experience building and shipping large-scale AI systems and services with high reliability, availability, and performance. Strong software engineering craft, with special care for developer experience and designing future-proof systems that can evolve along with a rapidly advancing AI landscape. Proficiency with Python. Bonus if familiar with Rust and cloud infrastructure (AWS, Kubernetes). BS, MS, or PhD in Computer Science, Engineering, or related fields (or equivalent experience).

Build and manage the internal communications function including executive content and change management to protect company culture. | 6+ years in internal or corporate communications with world-class writing skills and ability to advise senior executives under pressure, preferably in a high-growth tech company. | Perplexity is seeking an Internal Communications Manager to build that function from the ground up. You will own how information moves through Perplexity. You will be responsible for what Perplexity employees think, feel, know, and do. This is a 0→1 role with executive exposure from day one. If you believe internal comms is a strategic function and want to shape how an n(1) company talks to itself, this role is for you. Responsibilities Listen and learn across the company. Understand what’s happening, how, and why in order to make sound recommendations on what should be amplified or addressed. Run all-hands and executive content. Planning, execution, measurement, and evolution. Internal storytelling. Turn strategy, launches, and hard decisions into messages that bring clarity to every team. Be the signal in noise. Cut through Slack sprawl. Establish the channels, cadences, and norms that keep a fast company informed without drowning it. Own change management. Deliver hard and easy news with equal clarity and candor. Earn trust for the message and the messenger.. Protect the culture. Words set the tone. Make sure ours sound like us as we grow. Measure what matters. Perplexity is a high-velocity high-humility organization. Partner across the company. Work with every team, brief executives directly, and earn standing as a truth-teller. Qualifications 6+ years in internal, executive, or corporate communications, ideally inside a high-growth technology company. A builder, not a maintainer. You've stood a function up, not just kept one running. World-class writing and editing. You can ghostwrite for an executive, draft an all-hands, or defuse a sensitive announcement in any voice or format. Proven change-management instincts. You've delivered complex news to a whole company and kept trust intact. Sharp judgment under pressure. You decide fast, say the hard thing kindly, and hold the line on quality on launch day. Comfort with executives who hold a strong vision. You can advise, challenge, and make recommendations to senior leaders without flinching. Deep familiarity with the rules of corporate comms, and a clear point of view on which ones to break and when. Comfort using AI tools in your workflow, and the ability to say exactly where and how you use them. A passion for the truth well-told