Mobile Android Engineer, xAI

• All engineers and researchers are expected to have strong communication skills
• They should be able to concisely and accurately share knowledge with their teammates
• We’re seeking an exceptional Android Engineer to join a small, high-impact team dedicated to creating a transformative mobile experience at X, judged by the impact it delivers to users
• Expert in Kotlin, with deep knowledge of Jetpack Compose and the Android View system
• Proficient in performance optimization—memory, CPU, GPU—using low-level tools to deliver blazing-fast systems
• Experienced in designing and shipping intuitive, pixel-perfect mobile UIs that redefine how users interact with X, driven by a strong sense of product design and user needs
• Skilled in concurrency and reactive programming (Coroutines, Flow) for responsive, real-time apps
• Built high-throughput integrations with APIs (REST, GraphQL) or backend systems, ensuring seamless data flow while aligning with product goals
• Capable of owning complex features end-to-end, from architecture to Play Store deployment, with a focus on speed, scalability, and delivering measurable user value
• Technically Exceptional: You possess deep expertise in Android development, particularly with Kotlin. We seek individuals who operate at the highest levels of their craft
• Efficient: You excel at delivering results swiftly, often in a fraction of the time others require. Speed is a core value at X—we must act decisively to succeed
• Hardworking
• High Agency: You don’t wait for direction—you take initiative, propose bold ideas, and make things happen, both technically and from a product perspective
• Product-Minded: You have a sharp product sense, with an ability to empathize with users, anticipate their needs, and translate that into features that delight and deliver value

Desirable

• Our team is small, highly motivated, and focused on engineering excellence. This organization is for individuals who appreciate challenging themselves and thrive on curiosity
• All employees are expected to be hands-on and to contribute directly to the company’s mission. Leadership is given to those who show initiative and consistently deliver excellence. Work ethic and strong prioritization skills are important
• At X, our small but fast-paced team values innovation, creativity, and a strong commitment to our mission. As an Android Engineer, you'll have the opportunity to make a significant impact on the future of X and our aspiration to build the Everything App
• You’ll shape cutting-edge mobile experiences, blending technical mastery with a keen product sense to deliver experiences that resonate with users
• Dream up and craft delightful, intuitive user experiences that redefine how people interact with X on mobile, balancing technical innovation with a deep understanding of user behavior and needs
• Obsess over every pixel, animation, and interaction, ensuring the experience feels magical, seamless, and purposeful—delivering joy and utility in equal measure
• Build blazing-fast, highly performant systems where every millisecond counts, while ensuring the product solves real user problems
• Drive technical and product decisions, collaborating with designers, engineers, and cross-functional teams to deploy innovative features globally, with an eye toward maximizing user impact

• After submitting your application, the team reviews your CV and statement of exceptional work
• If your application passes this stage, you will be invited to a 15-30 minutes phone interview, during which a member of our team will ask technical questions
• If you clear the phone interview, you will proceed to next steps:
• Deep dive coding challenge
• Meet and greet with the wider team
• Our goal is to complete the process within one week. All interviews will be conducted in person when applicable

• Health and wellness: Comprehensive health insurance including medical, dental, vision, and disability coverage
• Life and family: Life and AD&D insurance and fertility benefits to ensure our team’s well-being and peace of mind
• Flexible vacation: We work hard but avoid burn out. Take time off when you need it
• Visa sponsorship: We support international talent with visa sponsorship to join our team
• 401(k) plan: Retirement savings plan to secure your financial future

Total funding: $12.1bn

xAI is Elon Musk's venture into the world of artificial intelligence, and like all things Musk, it's going big. Its setting out to build AI that helps humanity understand the universe and its starting with Grok, its conversational AI chatbot already integrated into X (formerly Twitter). With access to real-time data and a powerful ecosystem of Musk-led companies, xAI is certainly pushing towards artificial general intelligence at serious scale.