Backend Engineer (Remote)

We are hiring for one of our clients, seeking a Backend Engineer (JSON Schema Developer) to work on a contract basis. In this role, you will design, build, and validate JSON schemas to ensure high-quality data extraction from complex PDF documents.

• Review and analyze 25–150-page PDF documents to identify and model key data points relevant to domain-specific use cases.
• Design comprehensive JSON extraction schemas from scratch, determining optimal field extraction logic, data types, and structural organization—including deep nesting and repetition patterns.
• Embed field-level validation logic directly into JSON schemas, such as sum requirements, null-value testing, and conditional pattern matching.
• Define and maintain API contracts that ensure consistency between schema definitions and downstream system integrations.
• Collaborate with cross-functional teams to align schema design with data architecture goals and model evaluation objectives.

• Proficiency in JSON Schema specification and its application in data modeling and validation workflows.
• Experience designing schemas for real-world document processing, including handling complex nesting and repetition structures.
• Strong understanding of data typing, validation rules, and error handling within schema definitions.
• Familiarity with API contract design and integration patterns, including OpenAPI/Swagger and schema-first development.
• Ability to analyze unstructured documents (e.g., PDFs) and extract structured representations suitable for AI training pipelines.