Software Engineer, Principal

Meta Careers; Singapore; On-site; SGD 180,000 - 300,000; Full time

Job summary

Meta is seeking a Principal Software Engineer to drive technical strategy and architecture for key product systems in a large-scale, global infrastructure. You will lead multi-year initiatives and set standards for AI-native engineering practices across the portfolio.

You will mentor engineers, collaborate with product, design, data science, and ops partners, and shape priorities to accelerate speed, reliability, and impact across Meta's AI-driven products.

Qualifications

• Experience leading large-scale engineering initiatives.
• Proven ability to set technical direction and standards.
• Experience mentoring engineers and collaborating with product teams.

Responsibilities

• Define and drive multi-year technical vision and architecture for critical product systems.
• Lead transformative engineering initiatives to improve quality, performance or efficiency.
• Establish extensible foundations and coding standards across orgs and platforms.
• Develop AI-native engineering workflows to accelerate cross-disciplinary work.
• Mentor engineers and provide guidance for high-stakes technical decisions.

Skills

Architectural leadership

Technical strategy

AI-native engineering

Mentoring

Cross-functional collaboration

Job description

# Software Engineer, PrincipalSingapore Engineering+ 1 moreApply nowMeta is seeking a principal-level software engineer to drive technical strategy and engineering excellence across large-scale product systems. You will join XF APAC Products, an AI-first team leading commercial monetization, consumer app experimentation, and AI for Business This team is redesigning Meta's product development workflows for greater speed and efficiency. You will define architectural direction, lead multi-year technical initiatives, and set the standard for AI-native engineering practices across Meta's product portfolio.---## Software Engineer, Principal Responsibilities* Define and drive multi-year technical vision and architecture for critical product systems, ensuring designs are reliable, extensible, and built to scale across Meta's global infrastructure* Identify and lead transformative engineering initiatives that fundamentally improve product quality, system performance, or developer efficiency at the organizational level* Establish extensible technical foundations and coding standards that promote consistency across multiple engineering organizations and product platforms* Develop and champion AI-native engineering workflows that serve as force multipliers for cross-disciplinary teams, enabling broader scope and faster iteration* Diagnose and resolve the most complex systemic technical problems spanning multiple systems and abstraction layers, generalizing solutions to prevent entire classes of issues* Collaborate with product, design, data science, and operations partners to define strategic priorities, align on technical trade-offs, and drive execution across cross-functional teams* Mentor engineers across the organization by providing candid technical guidance, customized coaching, and frameworks for navigating ambiguous, high-stakes engineering decisions