Senior Full Stack Developer

Role: Senior Full Stack Developer
Location: Santa Clara, CA (Onsite 5 days)
Duration: 6+ Months

Overview: We are seeking a highly skilled Contract Senior Full-Stack Software Engineer to join our Manufacturing Execution System (MES) Software Engineering team, reporting to the Software Engineering Manager, to support modernization of legacy manufacturing systems into a cloud-native, multi-tenant SaaS platform on Microsoft Azure.
This is a hands-on engineering role covering front-end development, backend services, system architecture, and data/analytics enablement , with SQL Server to PostgreSQL migration planned in a later phase . The engineer will work closely with architecture, DevOps, and engineering teams to design and deliver scalable MES SaaS capabilities, APIs, and analytics solutions.

Must Have: Java 21 & Spring Boot, React (or Angular/Vue), Microservices & REST APIs (gRPC, Temporal), Azure (AKS, App Services, Functions) with Docker & Kubernetes, SQL Server & PostgreSQL (Migration), Multi-Tenant SaaS Architecture & MES Development

Key Responsibilities:

• Design, build, and deliver MES SaaS product features end-to-end across UI, API, backend, and data layers
• Develop modern front-end applications using React (preferred) or Angular/Vue
• Build backend services using Java 21 and Spring Boot
• Design and implement RESTful APIs and microservices supporting MES workflows
• Implement gRPC-based cross-service communication for high-performance service-to-service interaction
• Use Temporal for workflow orchestration for complex MES and enterprise processes
• Contribute to solution architecture and system design for scalable multi-tenant SaaS platform
• Refactor legacy MES components into modular cloud-native services
• Define and implement multi-tenant SaaS architecture (isolation, scalability, performance)
• Support data architecture and future migration from SQL Server to PostgreSQL (later phase)
• Build and support Power BI dashboards and MES analytics layer
• Develop data pipelines supporting reporting and analytics
• Work with Azure services (App Services, AKS, Functions), Docker, and Kubernetes
• Support CI/CD pipelines, testing, and production releases
• Integrate legacy MES systems with modern SaaS services

Must Have Skills & Experience:

• 8-10+ years software engineering experience (full-stack or backend-heavy)
• Strong hands-on architecture, design, and development experience
• Deep experience with Java 21 and Spring Boot
• Strong front-end development experience with React (preferred) or Angular/Vue
• Strong experience with SQL Server and PostgreSQL , including migration exposure
• Experience designing or working with multi-tenant SaaS applications
• Strong experience with microservices architecture and REST APIs
• Experience with gRPC for service-to-service communication
• Familiarity with Temporal workflow orchestration
• Experience with MES / ERP / manufacturing systems (preferred)
• Strong understanding of relational database design and performance tuning
• Experience with data lakes, ETL, or analytics systems
• Hands-on experience with Power BI (dashboards, datasets, or semantic models)
• Azure cloud experience (App Services, AKS, Functions)
• Docker, Kubernetes, and distributed systems experience

Soft Skills:

• Strong technical documentation skills (design docs, architecture diagrams, runbooks)
• Excellent communication across engineering and business stakeholders
• Strong collaborative team player mindset
• Ability to operate in a fast-paced, execution-driven environment
• Strong ownership and end-to-end delivery accountability