Senior/Staff TypeScript Engineer

Senior/Staff TypeScript Engineer for an early-stage AI company building an enterprise-ready AI coworker for procurement, legal, and sales teams. The role involves full-stack development with TypeScript, Node.js, Next.js, and AWS, working directly with enterprise customers. Remote contract position.

• Design, build, and ship production features across Vallor’s TypeScript stack
• Own backend services, APIs, integrations, data flows, and serverless infrastructure
• Contribute to the frontend when needed using Next.js and TypeScript
• Work directly with enterprise customers to understand their workflows and technical requirements
• Translate customer needs into well-scoped, maintainable product features
• Communicate tradeoffs, clarify requirements, and push back constructively when needed
• Build integrations across enterprise systems, contract platforms, communication tools, and third-party APIs
• Design and maintain serverless, event-driven systems on AWS
• Contribute to infrastructure-as-code workflows using SST and related tooling
• Use AI coding agents extensively to accelerate development and parallelize work
• Review, test, debug, and improve AI-generated code rather than accepting raw output
• Maintain a high standard for code quality, security, reliability, and maintainability
• Help shape engineering practices and technical direction as the team grows
• Identify opportunities beyond the initial customer requirements and turn them into valuable product improvements

• Senior or Staff-level software engineering experience
• Deep professional experience with TypeScript
• Strong backend engineering skills using Node.js, Bun, or similar runtimes
• Ability to contribute across the full stack, including modern React or Next.js applications
• Experience building and operating production systems on AWS
• Strong understanding of serverless and event-driven architecture
• Experience designing APIs, integrations, and distributed backend workflows
• Experience with PostgreSQL or similar relational databases
• Familiarity with infrastructure as code
• Strong product judgment and ability to turn ambiguous needs into shipped solutions
• Excellent written and verbal English communication
• Ability to work directly with customers and non-technical stakeholders
• Strong organization, attention to detail, and project ownership
• Experience using advanced AI coding tools or agents as a core part of daily development
• Ability to critically review and take ownership of AI-generated code
• Previous experience as a founding engineer or early-stage startup engineer
• Experience in a forward-deployed, solutions engineering, implementation, or technical consulting role
• Experience working directly with enterprise customers
• Deep knowledge of AWS infrastructure and systems architecture
• Experience with SST, Pulumi, or comparable infrastructure-as-code tools
• Experience coordinating multiple AI coding agents in parallel
• Experience building enterprise AI products or workflow-automation platforms
• Experience integrating with systems such as SAP, NetSuite, Salesforce, Snowflake, Microsoft 365, Slack, or contract lifecycle management platforms
• Public projects, open-source contributions, or code samples that demonstrate engineering quality
• Experience bringing structure and engineering maturity to a small, fast-growing team