Principal Software Engineer

About the Company

OneByZero is a Frontier Systems Integrator building agentic AI systems for leading banks, telecommunications companies, insurers, and retailers across Asia Pacific. We work on high-impact problems for institutions operating the financial and digital infrastructure of the region. We operate exclusively on AWS and leverage partnership programmes that provide co-sell reach, funded innovation opportunities, and delivery credibility across multiple markets. We value individuals who are technically strong, delivery-focused, collaborative, and committed to solving complex engineering challenges.

About the Role

The Principal Software Development Engineer (Principal SDE) is a senior technical leader who sets architecture and engineering direction across multiple teams and engagements. The Principal SDE tackles OBZ's most complex technical challenges, defines platform and solution architectures for enterprise AI systems in regulated environments, and elevates engineering capability across the firm. This is a hands-on technical leadership role with broad organisational influence. At OBZ, all engineers are expected to use AI tools effectively in their daily work. AI assistants and workflow automation tools are expected to improve engineering productivity, testing, debugging, documentation, and delivery execution.

Responsibilities

• Define architecture and technical strategy across multiple engagements, platforms, and teams.
• Lead the design of complex, large-scale, secure production systems for regulated enterprise clients.
• Set engineering standards, reference architectures, and best practices adopted firm-wide.
• Provide deep technical leadership on the most challenging delivery and reliability problems.
• Partner with delivery leadership, architects, and senior client stakeholders on technical direction and proposals.
• Drive build-vs-buy, technology selection, and platform investment decisions.
• Mentor senior and staff engineers, and grow the technical bench across teams.
• Contribute reusable platforms, accelerators, and frameworks that scale delivery.
• Champion responsible, effective use of AI tools across engineering.

Qualifications

• 10 to 14 years of experience delivering and architecting production software at scale.
• Recognised depth in system design, distributed systems, and cloud-native architecture.
• Extensive AWS expertise, including security, networking, and enterprise deployment patterns.
• Track record setting technical direction across multiple teams or a business line.
• Experience in regulated industries (financial services, telco, insurance) is strongly valued.
• Strong influence, communication, and stakeholder leadership skills.
• Continued hands-on engineering credibility.

Required Skills

• You have owned architecture for mission-critical systems in regulated enterprises.
• Experience architecting AI/agentic platforms at scale.
• You have shaped engineering culture, standards, and reusable platforms across an organisation.
• You are a recognised technical authority and mentor.

Preferred Skills

• Fluency in spoken and written English is required across all markets.
• Strong communication skills are important for collaboration across engineering teams, delivery teams, and enterprise stakeholders.
• Local language proficiency is considered an advantage, particularly in Japan, Vietnam, Thailand, and the Philippines.
• AWS Certified Solutions Architect Professional or DevOps Engineer Professional certifications are strongly valued.