As an Android engineer at xAI, you will be responsible for designing and developing high-quality mobile applications using Kotlin, Jetpack Compose, and reactive programming. You will work closely with cross-functional teams to ensure technical excellence and exceptional product intuition.

Responsibilities:

• Design and develop high-quality mobile applications using Kotlin, Jetpack Compose, and reactive programming
• Collaborate with cross-functional teams to ensure technical excellence and exceptional product intuition
• Work on the most critical product or technical challenge at any given time
• Optimize for performance, stability, and reliability

Requirements:

• Proficient in Kotlin, Jetpack Compose, and reactive programming
• Strong product sense and high craft bar
• Experienced in architecting modern large production apps while embodying technical excellence
• Strong sense of ownership and agency

Preferred Skills and Experience:

• A proven track record of shipping standout apps or features that demonstrate both technical excellence and exceptional product intuition
• Deep expertise in the Android ecosystem and related development tools (Android Studio, Gradle, etc.)
• Rust for working with our backend components

Compensation and Benefits:

$180,000 - $440,000 USD

Base salary is just one part of our total rewards package at xAI, which also includes equity, comprehensive medical, vision, and dental coverage, short & long-term disability insurance, life insurance, and various other discounts and perks.

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xAI's mission is to create AI systems that can accurately understand the universe and aid humanity in its pursuit of knowledge.

We're seeking an exceptional Android engineer to join a small, high-impact team dedicated to creating the world's most valuable AI application, judged by the impact it delivers to users. You'll shape cutting-edge mobile experiences, blending technical mastery with a keen product sense to deliver brilliance that resonates with users. You will work on the most critical product or technical challenge at any given time.

Responsibilities

• Shape cutting-edge mobile experiences using technical mastery and a keen product sense
• Work on the most critical product or technical challenge at any given time
• Collaborate with a small, high-impact team to create the world's most valuable AI application

Basic Qualifications

• Proficient in Kotlin, Jetpack Compose and reactive programming
• Has a strong product sense and high craft bar
• Experienced in architecting modern large production apps while embodying technical excellence
• Strong sense of ownership and agency
• Able to put on multiple hats and take responsibility for large areas
• Able to optimise for performance, stability and reliability

Preferred Skills and Experience

• A proven track record of shipping standout apps or features that demonstrate both technical excellence and exceptional product intuition
• Deep expertise in the Android ecosystem and related development tools (Android Studio, Gradle, etc.)
• Rust for working with our backend components

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Our data analytics platform can translate mobile sensor data from real-world human activity into a “digital fingerprint” with no conscious action from the user, all in real-time, and in a way that respects user privacy.

This is an opportunity to be a part of something truly unique and game-changing.

Your day-to-day

• Be an early member of a high-performing team of software engineers and machine learning researchers building a new human identity platform
• Take ownership, be creative, and think outside the box to invent and build solutions to real-world customer problems
• Provide thought leadership on industry best practices around design, testing, and security
• Be proactive in ensuring that customers using your software have a great experience
• Wear many hats to make things happen in a dynamic startup environment
• Bring your own unique expertise to the team and learn from others
• Enjoy tight collaboration with your teammates

Ideal candidates will have...

• Spent at least 5 years in the trenches of the software industry, delivering quality software that matters to people that care
• Many “been there, done that” stories related to shipping and maintaining mobile releases for large numbers of customers
• Experience executing on complex features leveraging the power of native Android SDKs
• Strong knowledge of Android Studio along with competency using Android standard libraries
• Experience analyzing features in production using analytics and experiments (e.g. A/B testing; use various reporting systems to identify root cause of issues etc.)
• A breadth of technical skills and know how to use the right tool for the job
• A positive can-do attitude and bring a passion for excellence to the workplace
• Excellent collaboration and communication skills
• Knowledge of cybersecurity, machine learning, or experience working with motion sensor data a bonus

Additional Information

Join us! As we continue to scale our company, we are looking for people who know how to make an impact. We’re talking self-starting professionals who thrive in a fast-paced environment, process information quickly, and make intelligent decisions. The work is challenging and requires not only smarts but natural curiosity and tenacity. Teamwork is also important to us – we work together and play together. Prove has big plans; we’re excited and optimistic about the future. If this sounds like a career for you – come check us out.

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We are looking for a seasoned software engineer with deep experience on Android to join our A+ technical team in designing and building innovative mobile solutions to our customers.

UnifyID is building a platform to solve one of the world's biggest unsolved security problems in a completely novel way, requiring us to push the boundaries of what's possible in production machine learning and on mobile devices.

Our data analytics platform can translate mobile sensor data from real-world human activity into a 'digital fingerprint' with no conscious action from the user, all in real-time, and in a way that respects user privacy.

This is an opportunity to be a part of something truly unique and game-changing.

Your day-to-day

• Be an early member of a high-performing team of software engineers and machine learning researchers building a new human identity platform

• Take ownership, be creative, and think outside the box to invent and build solutions to real-world customer problems

• Provide thought leadership on industry best practices around design, testing, and security

• Be proactive in ensuring that customers using your software have a great experience

• Wear many hats to make things happen in a dynamic startup environment

• Bring your own unique expertise to the team and learn from others

• Enjoy tight collaboration with your teammates

Ideal candidates will have...

• 5+ years in the trenches of the software industry, delivering quality software that matters to people that care

• Many 'been there, done that' stories related to shipping and maintaining mobile releases for large numbers of customers

• Experience executing on complex features leveraging the power of native Android SDKs

• Strong knowledge of Android Studio along with competency using Android standard libraries

• Experience analyzing features in production using analytics and experiments (e.g. A/B testing; use various reporting systems to identify root cause of issues etc.)

• A breadth of technical skills and know how to use the right tool for the job

• A positive can-do attitude and bring a passion for excellence to the workplace

• Excellent collaboration and communication skills

• Knowledge of cybersecurity, machine learning, or experience working with motion sensor data a bonus

Additional Information

Join us!

As we continue to scale our company, we are looking for people who know how to make an impact.

We're talking self-starting professionals who thrive in a fast-paced environment, process information quickly, and make intelligent decisions.

The work is challenging and requires not only smarts but natural curiosity and tenacity.

Teamwork is also important to us – we work together and play together.

Prove has big plans; we're excited and optimistic about the future.

If this sounds like a career for you – come check us out.

This team is located in the heart of Silicon Valley in downtown Redwood City and has unparalleled access to deep entrepreneurial expertise, high-caliber academic research institutions, and top-tier VC resources.

Finally, it is important that you be authentic and be yourself.

Prove is an equal opportunity employer committed to providing equal employment opportunity for all people regardless of race, color, religion, gender or sexual orientation, age, marital status, national origin, citizenship status, disability, veteran status, or other personal characteristics.

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Seattle; San Francisco

Employment Type

Full time

Department

Applied AI

Compensation

• $325K – $385K • Offers Equity

The base pay offered may vary depending on multiple individualized factors, including market location, job-related knowledge, skills, and experience. If the role is non-exempt, overtime pay will be provided consistent with applicable laws. In addition to the salary range listed above, total compensation also includes generous equity, performance-related bonus(es) for eligible employees, and the following benefits.

• Medical, dental, and vision insurance for you and your family, with employer contributions to Health Savings Accounts

• Pre-tax accounts for Health FSA, Dependent Care FSA, and commuter expenses (parking and transit)

• 401(k) retirement plan with employer match

• Paid parental leave (up to 24 weeks for birth parents and 20 weeks for non-birthing parents), plus paid medical and caregiver leave (up to 8 weeks)

• Paid time off: flexible PTO for exempt employees and up to 15 days annually for non-exempt employees

• 13+ paid company holidays, and multiple paid coordinated company office closures throughout the year for focus and recharge, plus paid sick or safe time (1 hour per 30 hours worked, or more, as required by applicable state or local law)

• Mental health and wellness support

• Employer-paid basic life and disability coverage

• Annual learning and development stipend to fuel your professional growth

• Daily meals in our offices, and meal delivery credits as eligible

• Relocation support for eligible employees

• Additional taxable fringe benefits, such as charitable donation matching and wellness stipends, may also be provided.

More details about our benefits are available to candidates during the hiring process.

This role is at-will and OpenAI reserves the right to modify base pay and other compensation components at any time based on individual performance, team or company results, or market conditions.

About the Team

The Monetization team is a new cross-functional group working across engineering, product, research, and design to build the foundational systems that will help OpenAI scale access to intelligence responsibly. Our mission is to develop user-first, privacy-preserving monetization products, including next-generation ads experiences that strengthen user trust, unlock economic opportunity, and support OpenAI’s long-term innovation.

Monetization plays a critical role in enabling OpenAI to continue pushing the boundaries of AI capabilities while ensuring the benefits of AGI are broadly shared. We believe monetization must be aligned with user value, uphold rigorous privacy and safety standards, and sustain a healthy ecosystem of developers and businesses.

This team operates in a greenfield environment and moves quickly through prototyping, experimentation, and iterative deployment. We partner closely with Product, Design, and Research to bring research breakthroughs into real-world systems at global scale.

About the Role

We’re looking for a Senior Android Engineer on OpenAI’s Applied team to build the core mobile experiences that power how users sign up, manage their account, use family features, pay for services, stay safe, and interact with OpenAI’s products with confidence.

This role is about building high-quality products and reusable Android foundations that product teams across OpenAI apps depend on to ship quickly while meeting the highest standards for security, reliability, privacy, and user trust. You’ll own complex client-side systems spanning UI, networking, local state, payments, and Android platform integrations, and you’ll work closely with backend, product, and safety partners to shape the architecture that supports OpenAI’s mobile ecosystem at global scale.

In this role, you will

• Build and ship monetization experiences on Android (e.g., plan selection, purchase flows, subscription management, entitlements, and policy-aware UX patterns).

• Design and maintain shared Android frameworks and primitives for account, trust, and commerce flows used across OpenAI’s mobile apps (auth/session, entitlements, checkout abstractions, safety gates, etc.).

• Own complex Android systems end-to-end across UI architecture, networking, local persistence/state, observability, and release processes.

• Build robust integrations with Android platform and ecosystem components (e.g., Google Play Billing, authentication, device security signals, deep links, push).

• Optimize performance, reliability, and responsiveness at global scale (startup time, rendering, network resiliency, battery, crash-free sessions).

• Establish and evolve testing and quality systems (unit/integration/UI tests, CI reliability, automated regression, release validation).

• Collaborate with Product, Design, Research, backend, and Safety to deliver features that meet OpenAI’s highest standards for safety, privacy, fairness, and policy compliance.

• Provide technical leadership through architecture reviews, mentoring, and setting engineering standards across the Android foundations surface.

You might thrive in this role if you

• Have 4+ years of professional software engineering experience with meaningful Android ownership.

• Have a track record of building and shipping high-quality Android applications in production (especially for reliability- and trust-sensitive flows like identity and payments).

• Are fluent in Kotlin and comfortable with Android tooling and architecture (Gradle, Android Studio, modern app architecture patterns, Jetpack Compose).

• Enjoy making pragmatic architectural tradeoffs while keeping systems maintainable, testable, and scalable.

• Care deeply about performance, security, privacy, and user experience, and you bring a high bar for polish.

• Thrive in 0→1 environments where systems, architecture, and processes are constantly evolving.

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