xAI
Software Engineer, X Chat - Cryptography
Software Engineer, X Chat - Cryptography
xAI’s mission is to create AI systems that can accurately understand the universe and aid humanity in its pursuit of knowledge. Our team is small, highly motivated, and focused on engineering excellence. This organization is for individuals who appreciate challenging themselves and thrive on curiosity. We operate with a flat organizational structure. 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. All engineers are expected to have strong communication skills. They should be able to concisely and accurately share knowledge with their teammates. About the Role About xAI xAI’s mission is to create AI systems that can accurately understand the universe and aid humanity in its pursuit of knowledge. Our team is small, highly motivated, and focused on engineering excellence. This organization is for individuals who appreciate challenging themselves and thrive on curiosity. We operate with a flat organizational structure. 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. All engineers are expected to have strong communication skills. They should be able to concisely and accurately share knowledge with their teammates. About the Role We’re seeking an exceptional Software Engineer to join a small, high-impact X Chat team dedicated to creating a transformative mobile chat experience. You’ll shape intuitive, secure mobile apps, blending technical expertise with a keen product sense to deliver user impact. An ideal candidate meets at least the following requirements: Expert in Swift, Objective-C, Kotlin, or Java, with deep knowledge of mobile architectures.
Proficient in performance optimization for responsive, secure apps.
Experienced in designing and shipping intuitive mobile UIs with E2EE integration.
Skilled in concurrency (Coroutines, Flow) for real-time, encrypted messaging.
Built high-throughput API integrations (REST, GraphQL) with backend systems.
Capable of owning features end-to-end, from architecture to app store deployment, focusing on user value.
Additionally, experience in any of the following may set you apart: Deep expertise in iOS/Android ecosystems and tools (Xcode, Android Studio, Gradle).
Proven track record of shipping standout mobile apps with secure features.
What You’ll Do
Craft delightful, secure mobile experiences for X Chat on iOS/Android.
Obsess over performance and UI, ensuring seamless, encrypted interactions.
Drive technical and product decisions, collaborating with designers and engineers.
Deploy innovative, secure features globally, maximizing user impact.
Who You Are
Technically Exceptional : Deep expertise in mobile development, particularly with Kotlin or Swift.
Efficient : Deliver results swiftly, prioritizing speed and quality.
Hardworking : Committed to building secure, user-focused apps.
High Agency : Take initiative and drive feature development.
Product-Minded : Empathize with users to create delightful, secure experiences.
Tech Stack
Swift, Objective-C, Kotlin, Java
REST, GraphQL
Xcode, Android Studio, Gradle
Interview Process After submitting your application, the team reviews your CV and statement of exceptional work. If your application passes, you’ll be invited to a 15-30 minute phone interview with technical questions. If cleared, you’ll proceed to: 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. Location The role is based in Palo Alto. Candidates are expected to be located near the Bay Area or open to relocation. Annual Salary Range $180,000 - $440,000 USD Benefits Base salary is just one part of our total rewards package at X, which also includes equity, comprehensive medical, vision, and dental coverage, access to a 401(k) retirement plan, short & long-term disability insurance, life insurance, and various other discounts and perks. xAI is an equal opportunity employer. California Consumer Privacy Act (CCPA) Notice
Seniority level
Seniority level Entry level Employment type
Employment type Full-time Job function
Job function Engineering and Information Technology Industries Technology, Information and Internet Referrals increase your chances of interviewing at xAI by 2x Sign in to set job alerts for “Software Engineer” roles.
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Software Engineer, X Chat - Cryptography
xAI’s mission is to create AI systems that can accurately understand the universe and aid humanity in its pursuit of knowledge. Our team is small, highly motivated, and focused on engineering excellence. This organization is for individuals who appreciate challenging themselves and thrive on curiosity. We operate with a flat organizational structure. 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. All engineers are expected to have strong communication skills. They should be able to concisely and accurately share knowledge with their teammates. About the Role About xAI xAI’s mission is to create AI systems that can accurately understand the universe and aid humanity in its pursuit of knowledge. Our team is small, highly motivated, and focused on engineering excellence. This organization is for individuals who appreciate challenging themselves and thrive on curiosity. We operate with a flat organizational structure. 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. All engineers are expected to have strong communication skills. They should be able to concisely and accurately share knowledge with their teammates. About the Role We’re seeking an exceptional Software Engineer to join a small, high-impact X Chat team dedicated to creating a transformative mobile chat experience. You’ll shape intuitive, secure mobile apps, blending technical expertise with a keen product sense to deliver user impact. An ideal candidate meets at least the following requirements: Expert in Swift, Objective-C, Kotlin, or Java, with deep knowledge of mobile architectures.
Proficient in performance optimization for responsive, secure apps.
Experienced in designing and shipping intuitive mobile UIs with E2EE integration.
Skilled in concurrency (Coroutines, Flow) for real-time, encrypted messaging.
Built high-throughput API integrations (REST, GraphQL) with backend systems.
Capable of owning features end-to-end, from architecture to app store deployment, focusing on user value.
Additionally, experience in any of the following may set you apart: Deep expertise in iOS/Android ecosystems and tools (Xcode, Android Studio, Gradle).
Proven track record of shipping standout mobile apps with secure features.
What You’ll Do
Craft delightful, secure mobile experiences for X Chat on iOS/Android.
Obsess over performance and UI, ensuring seamless, encrypted interactions.
Drive technical and product decisions, collaborating with designers and engineers.
Deploy innovative, secure features globally, maximizing user impact.
Who You Are
Technically Exceptional : Deep expertise in mobile development, particularly with Kotlin or Swift.
Efficient : Deliver results swiftly, prioritizing speed and quality.
Hardworking : Committed to building secure, user-focused apps.
High Agency : Take initiative and drive feature development.
Product-Minded : Empathize with users to create delightful, secure experiences.
Tech Stack
Swift, Objective-C, Kotlin, Java
REST, GraphQL
Xcode, Android Studio, Gradle
Interview Process After submitting your application, the team reviews your CV and statement of exceptional work. If your application passes, you’ll be invited to a 15-30 minute phone interview with technical questions. If cleared, you’ll proceed to: 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. Location The role is based in Palo Alto. Candidates are expected to be located near the Bay Area or open to relocation. Annual Salary Range $180,000 - $440,000 USD Benefits Base salary is just one part of our total rewards package at X, which also includes equity, comprehensive medical, vision, and dental coverage, access to a 401(k) retirement plan, short & long-term disability insurance, life insurance, and various other discounts and perks. xAI is an equal opportunity employer. California Consumer Privacy Act (CCPA) Notice
Seniority level
Seniority level Entry level Employment type
Employment type Full-time Job function
Job function Engineering and Information Technology Industries Technology, Information and Internet Referrals increase your chances of interviewing at xAI by 2x Sign in to set job alerts for “Software Engineer” roles.
Mountain View, CA $145,000.00-$170,000.00 4 days ago Mountain View, CA $138,225.00-$207,575.00 5 days ago Software Engineer, AI Platform - New Grad
Mountain View, CA $145,000.00-$170,000.00 4 days ago San Jose, CA $100,500.00-$173,250.00 1 week ago Mountain View, CA $130,000.00-$176,000.00 3 weeks ago Palo Alto, CA $140,000.00-$185,000.00 2 weeks ago San Jose, CA $113,400.00-$206,300.00 1 week ago San Jose, CA $113,400.00-$206,300.00 1 week ago Palo Alto, CA $140,000.00-$265,000.00 2 weeks ago Software Engineer, Google Store, Front End
Mountain View, CA $141,000.00-$202,000.00 2 weeks ago Palo Alto, CA $122,800.00-$153,500.00 2 weeks ago eCommerce Full Stack Developer (React / Shopify) - On Site
San Jose, CA $113,400.00-$206,300.00 1 week ago Menlo Park, CA $157,000.00-$230,000.00 2 weeks ago Palo Alto, CA $86,200.00-$145,400.00 2 weeks ago San Jose, CA $113,400.00-$206,300.00 1 week ago Frontend Software Engineer - University Graduate 2025
San Mateo, CA $120,000.00-$165,000.00 3 days ago Mountain View, CA $141,000.00-$202,000.00 6 days ago San Mateo, CA $145,000.00-$165,000.00 1 week ago Web UI Engineer (L4), Identity & Security Experiences
We’re unlocking community knowledge in a new way. Experts add insights directly into each article, started with the help of AI.
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