Senior Ads Platform Engineer — AI, Scale, Equity

SpaceXSI; Palo Alto (CA); On-site; USD 180,000 - 330,000; Full time

Benefits offered by this job

Equity

Health coverage

401(k)

Disability & life insurance

Job summary

SpaceXSI’s SR. SOFTWARE ENGINEER, ADS PRODUCT role sits within X Ads Platform, focusing on large-scale systems and AI integration. Early-career engineers can own components, contribute to ads delivery, and learn from experienced engineers in a fast-paced setting.

You will work across product, backend systems, infrastructure, and AI-powered features impacting X’s revenue, with a strong emphasis on performance and reliability.

Qualifications

• 5+ years of software development experience including internships, projects, or roles.
• Experience with ads, AI, or large-scale systems is a plus.
• Ability to learn quickly and ship quickly in a fast-moving environment.
• Comfort working across product, backend, infrastructure, and AI features.

Responsibilities

• Build and ship product features across the X Ads Platform
• Work on systems related to ad delivery, targeting, optimization, measurement, and advertiser experience
• Use SpaceXSI infrastructure and AI capabilities to improve performance and quality of advertising products
• Contribute to distributed systems that are reliable, fast, and scalable
• Collaborate with engineers, product leads, and cross-functional partners to turn ideas into working products
• Learn quickly, take ownership, and operate in a fast-moving environment
• Debug, maintain, and improve production systems that serve real users and drive business impact

Skills

Strong software engineering basics

Write clean, maintainable code

Problem solving

Ownership mindset

Ship-focused delivery

Ads/AI product experience

Large-scale backend systems

Frontend & backend stack (React, Gol &

ML/LLM systems

Job description

SpaceXSI’s SR. SOFTWARE ENGINEER, ADS PRODUCT role sits within X Ads Platform, focusing on large-scale systems and AI integration. Early-career engineers can own components, contribute to ads delivery, and learn from experienced engineers in a fast-paced setting.

You will work across product, backend systems, infrastructure, and AI-powered features impacting X’s revenue, with a strong emphasis on performance and reliability.