TechnicalLead

SmartDev is an AI-powered software development company headquartered in Vietnam, part of the Verysell Group. We help global businesses deliver faster and build smarter — combining AI-driven development practices with deep expertise across fintech, healthcare, retail, and enterprise technology. Our team of engineers, architects, and AI specialists works across the full stack: from custom software and cloud solutions to generative AI, MLOps, and intelligent automation. At SmartDev, we believe that great architecture and AI-first thinking are a competitive advantage — and we build our teams accordingly. The company is at a pivotal point in our journey: transitioning from a pure IT outsourcing provider to an AI-enabled solutions partner. We have over 200 talented employees working both on-site and remote/hybrid at locations: * Danang: 81 Quang Trung, Hai Chau 1 ward, Hai Chau District, Danang * Hanoi: Zodiac building, 19 Duy Tan Street, Dich Vong Hau ward, Cau Giay District, Hanoi We’re looking for a hands-on Lead Engineer to own critical parts of our platform end-to-end, from backend services and databases through to web front-end and the pipelines that deploy them. This is a broad role by design. You’ll work across many services and a wide tech stack, set the technical standards the team follows, and be the senior person others turn to when something is hard. We value strong generalists who are comfortable moving across the full stack over specialists in a single area. * Design, build, and run production.NET microservices that handle real money and transactions — where correctness, reliability, and security matter most. * Lead architecture decisions and review code across multiple teams and repositories. * Own data across both relational (PostgreSQL) and NoSQL (MongoDB) databases - schema design, performance, and integrity. * Build and integrate withthird-party providers (payments, identity/KYC, data partners) using resilient, fault-tolerant patterns. * Develop custom