Principal Architect | AI B2B SaaS | Bengaluru

Define the architecture of a Series B AI platformBe a part of 10x growth story About Our Client Our client is a Series B B2B HealthTech company building an enterprise AI platform for leading healthcare providers across the United States. The platform leverages agentic AI to transform complex clinical data into intelligent workflows, helping healthcare organisations automate high-value, data-intensive processes. Having raised US$36M+ in funding, the company is backed by leading institutional investors including Battery Ventures, Nexus Venture Partners, Lightspeed Venture Partners, and Y Combinator. It has achieved 10x growth over the past year and now processes millions of clinical documents each month through its production platform. With multiple enterprise deployments live across the US healthcare ecosystem, the business is entering its next phase of rapid growth and platform scale. Job Description Reporting into the senior engineering leadership team, the Principal Architect will own the technical direction of the company's platform and serve as the highest technical authority across architecture and distributed systems design. Key responsibilities include: Define the long-term architectural roadmap across platform, infrastructure, AI serving, data pipelines, and enterprise integrations.Design highly scalable, secure, and resilient distributed systems capable of supporting rapid business growth.Lead architecture reviews and establish engineering standards, design principles, and technical governance.Partner with Product, Engineering, and Machine Learning teams to translate complex business problems into scalable technical solutions.Drive platform reliability, observability, performance, and technical quality across the engineering organisation.Architect multi-tenant SaaS and enterprise deployments across cloud, private cloud, and customer-controlled environments.Mentor senior engineers and influence technical direction across multiple engineering teams.Identify and eliminate architectural bottlenecks before they become scaling constraints. The Successful Applicant We are looking for an accomplished technical leader who combines exceptional architectural thinking with deep hands-on engineering expertise. You will bring: 10+ years building large-scale software platforms, including experience as a Principal Engineer, Principal Architect, Staff Engineer, Distinguished Engineer, or equivalent.Deep expertise designing distributed systems, microservices, event-driven architectures, and cloud-native platforms.Strong experience building large-scale B2B SaaS, enterprise software, or data-intensive platforms.Expertise across AWS and/or Azure, Kubernetes, modern backend architectures, CI/CD, and cloud infrastructure.Experience designing highly reliable systems with strong observability, fault tolerance, scalability, and operational excellence.Strong understanding of data processing platforms, document pipelines, search technologies, and enterprise integrations.The ability to influence technical direction across multiple engineering teams without relying on organisational authority.Excellent communication skills with the ability to simplify complex technical decisions for both technical and business stakeholders. What's on Offer Define the technical architecture of a rapidly scaling Series B AI company.Solve complex distributed systems, AI infrastructure, and platform engineering challenges at enterprise scale.Work alongside an exceptional team of engineering and machine learning leaders.Build technology used by leading healthcare organisations across the United States.Influence architectural decisions that will shape the company's platform for years to come.Join a company backed by leading global investors with US$36M+ in funding and 10x year-on-year growth.Competitive compensation within a high-performance, engineering-first culture. Define the architecture of a Series B AI platformBe a part of 10x growth story About Our Client Our client is a Series B B2B HealthTech company building an enterprise AI platform for leading healthcare providers across the United States. The platform leverages agentic AI to transform complex clinical data into intelligent workflows, helping healthcare organisations automate high-value, data-intensive processes. Having raised US$36M+ in funding, the company is backed by leading institutional investors including Battery Ventures, Nexus Venture Partners, Lightspeed Venture Partners, and Y Combinator. It has achieved 10x growth over the past year and now processes millions of clinical documents each month through its production platform. With multiple enterprise deployments live across the US healthcare ecosystem, the business is entering its next phase of rapid growth and platform scale. Job Description Reporting into the senior engineering leadership team, the Principal Architect will own the technical direction of the company's platform and serve as the