Software Engineer - Consumer Subscriptions

Pantera Capital; Palo Alto (CA); On-site; USD 180,000 - 440,000; Full time

Benefits offered by this job

Equity

Medical coverage

401(k)

Job summary

SpaceXAI is seeking an engineer for Consumer Subscriptions to own the end-to-end billing and monetization infrastructure powering one of our fastest-growing revenue units. You will lead a dedicated team responsible for subscriptions, promotions, global payments, and personalized user experiences at massive scale.

This role offers high-impact, hands-on ownership of features for X Premium and SuperGrok, with opportunities to directly influence revenue growth and product experiences for hundreds of

Qualifications

• Experience building large-scale backend systems (billing/payments/transactions).
• Experience leading engineering initiatives and teams.
• Strong track record delivering consumer applications at scale.

Responsibilities

• Own the complete billing infrastructure for subscriptions end-to-end with reliability and security.
• Design and build promotional offer infrastructure and internal tools to drive revenue.
• Develop communications systems for push, email, and in-app messaging to boost engagement.
• Implement market-specific billing methods and compliance for global expansion.
• Architect product bundles across the X ecosystem for different markets.
• Build models to deliver targeted messages, offers, and information at the right time.
• Recruit, build, and lead a high-performing Consumer Subscriptions engineering team.
• Hands-on ownership and development of key features for X Premium and SuperGrok.

Skills

Billing systems

Lead engineering teams

Distributed systems

Monetization experience

Go

Python

Java

Rust

Billing payments

Tools

Promotions tooling

Global payments integration

A/B testing frameworks

Job description

SpaceXAI'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 employees are expected to have strong communication skills. They should be able to concisely and accurately share knowledge with their teammates.

ABOUT THE ROLE:

As an engineer for Consumer Subscriptions (X Premium & SuperGrok), you will own the entire billing and monetization infrastructure powering one of SpaceXAI's fastest-growing revenue organizations. You will build and lead the dedicated engineering team responsible for subscriptions, promotions, global payments, and personalized user experiences at massive scale. This high-impact engineering role offers the opportunity to directly drive significant revenue growth while architecting systems that serve hundreds of millions of users worldwide and shape the future of premium AI and social products.

RESPONSIBILITIES:

• Own the complete billing infrastructure for consumer subscriptions end-to-end, ensuring world-class reliability, security, and scalability.
• Design and build sophisticated promotional offer infrastructure and internal tools to supercharge the revenue organization.
• Develop comprehensive communications systems enabling intelligent push, email, and in-app messaging that drive engagement and conversions.
• Implement market-specific billing methods and compliance solutions to accelerate global expansion.
• Architect compelling product bundles across the X ecosystem tailored to different markets and consumer needs.
• Build intelligent models and systems that serve the right messages, offers, and information to users at the optimal time.
• Recruit, build, and lead a high-performing Consumer Subscriptions engineering team.
• Hands-on ownership and development of key features for X Premium and SuperGrok products.

BASIC QUALIFICATIONS:

• Exceptional software engineering background with deep experience building large-scale, high-stakes systems (billing, payments, or transactional platforms preferred).
• Proven ability to lead technical initiatives and influence or directly manage engineering teams.
• Strong track record delivering complex backend systems for consumer applications at scale.
• Passion for revenue-generating products and creating exceptional user experiences.

PREFERRED SKILLS AND EXPERIENCE:

• 5+ years of experience working on large-scale consumer applications, ideally in monetization, subscriptions, or fintech.
• Experience leading engineering efforts in a fast-paced, high-growth environment.
• Expertise in distributed systems, global payments infrastructure, personalization engines, or A/B testing frameworks.
• Proficiency with high-performance languages and tools such as Go, Python, Java, Rust, or similar.

COMPENSATION AND BENEFITS:

$180,000 - $440,000 USD

Base salary is just one part of our total rewards package at SpaceXAI, 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.

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