Sr. Software Engineer - Full Stack - Core Platform Services

Oscar is working with a leading AI solution for Semiconductor Manufacturing Process Optimization organization that is looking for an experienced Sr. Software Engineer - Full Stack - Core Platform Services to join their team.

As the Sr. Software Engineer - Full Stack - Core Platform Services
, you will own the design, development, and delivery of our customer-facing platform experiences and extensibility features. You'll build intuitive, high-performance user interfaces that enable data scientists, ML engineers, and business users to interact seamlessly with our AI data platform. On the backend, you ll develop robust middleware services, APIs, and orchestration layers that power our multi-tenant SaaS architecture.

• Design, develop, and maintain scalable, responsive frontend experiences using modern frameworks (React, Next.js, Type Script) for the Multiscale platform UI
• Build and optimize backend middleware services, RESTful APIs, and Graph
  
  QL endpoints to support platform features, integrations, and orchestration
• Architect and implement App Hub infrastructure—a marketplace and runtime environment enabling users to develop, deploy, and manage custom apps, extensions, and integrations (similar to Replit, Vercel Marketplace, or Snowflake Marketplace)
• Develop one-click provisioning, app sandboxing, unified billing, authentication, and app lifecycle management for App Hub
• Collaborate with cross-functional teams, including product managers, designers, data scientists, and platform engineers to deliver seamless, production-grade user experiences
• Implement best practices for security, performance, scalability, and code quality across the full stack
• Participate in code reviews, sprint planning, and technical design discussions to drive platform innovation

• Bachelor s or master s degree in computer science, Engineering, or related field
• 5+ years of professional experience in full-stack software engineering, SaaS platforms, or developer tools
• Hands-on experience with modern frontend technologies (React, Next.js, Type Script, HTML/CSS, Redux or similar state management)
• Strong backend development skills with languages like Python, Node.js, Go
• Experience building and consuming RESTful APIs, Graph
  
  QL, and microservices architectures
• Strong communication and teamwork abilities

• Experience building app marketplace infrastructure, extensibility platforms, or developer-facing tooling (e.g., Replit-like environments, Vercel Marketplace, Snowflake Marketplace, VS Code extensions)
• Familiarity with containerization (Docker, Kubernetes), sandboxing, and orchestration for multi-tenant app execution
• Knowledge of cloud platforms (AWS, Azure, GCP) and infrastructure-as-code (Terraform, Cloud Formation)
• Experience with CI/CD pipelines, automated testing (Jest, Cypress, Playwright), and Dev Ops practices
• Understanding of billing/subscription integrations, app provisioning workflows, and partner/vendor onboarding

• Type:
  Full time Permanent
• Rate: $175k - $195k annual salary dependent on relevant experience

If you think you re a good fit for the role, we d love to hear from you!