Principal Software Development Engineer I

About OneByZero OneByZero is a Frontier Systems Integrator building agentic AI systems for leading banks, telcos, insurers, and retailers across Asia Pacific. We work on mission-critical problems for organizations operating the region's financial and digital infrastructure. Operating exclusively on AWS, we combine deep technical expertise with strong partnership programs that enable innovation, scale, and delivery excellence. We build with people who are technically serious, outcome-focused, and passionate about solving complex enterprise challenges. The Role The Principal Software Development Engineer I is a senior technical leader who sets architecture and engineering direction across multiple teams and engagements. The Principal SDE I 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. Key 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. Requirements Required Skills & Experience 10 to 15 years of experience delivering and architecting production software at scale. Recognized 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. What sets you apart 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 organization. You are a recognized technical authority and mentor. Benefits What We Offer Competitive compensation benchmarked to market. The opportunity to work on AI transformation programmes that matter to the institutions millions of people in Asia Pacific depend on. A team that spans 10 markets, brings together some of the most experienced AI, data, and enterprise technology practitioners in the region, and moves fast without losing quality. Access to the AWS partnership programmes and frontier AI tooling that most firms in this region do not have. A firm that is building something genuinely new, with a leadership team that has scaled and delivered before. OneByZero is an equal opportunity employer. We are committed to building a diverse and inclusive team and welcome applications from candidates of all backgrounds. Why OneByZero Agentic AI in regulated enterprise is the hardest version of this problem. The clients are the institutions that run the financial infrastructure of Asia Pacific. The constraints are real. The stakes are high. OBZ is one of the few firms in the region doing this work at production scale in regulated industries, with an AWS partnership that puts you at the frontier of what is deployable. You will build systems that matter, work in squads small enough that your contribution is visible, and use AI coworkers as a genuine force multiplier. If you are at the start of your career and want to be shaped by the hardest agentic engineering problems in the region, this is where that happens. If you are experienced and want to work on problems that are still genuinely unsolved, this is also where that happens.