Case studies
AI-Powered Document Processing System Transforms Operations for Major Commodity Trading Firm
Flexi IT’s AI-powered doc processing for commodity traders: speed, accuracy & automation via OCR, semantic search & microservices.

How Flexi IT Built an Intelligent Document Management Platform That Reduced Processing Time and Eliminated Manual Errors
Executive Summary
A leading commodity derivatives and raw materials trading company partnered with Flexi IT to revolutionise their document processing operations. Facing overwhelming volumes of contracts, invoices, and trading confirmations, the client needed an intelligent system to automate document handling whilst maintaining compliance and accuracy.
Flexi IT delivered a comprehensive AI-powered document processing platform that combines cutting-edge machine learning with enterprise-grade architecture. The solution reduced document processing time, eliminated manual data entry errors, and provided real-time analytics for business intelligence transforming how the organisation manages critical trading documentation.
The Challenge: Document Overload in High-Stakes Trading
Operating in the fast-paced commodity trading sector, our client processes thousands of documents daily from complex derivatives contracts to multi-party invoices and time-sensitive confirmations. Their manual document handling created critical bottlenecks:
Volume and Velocity
- Processing over 10,000 documents monthly across multiple formats (PDF, XLSX, JPG, DOCX)
- Each trade confirmation requiring three-way reconciliation between counterparty papers, broker statements, and internal systems
- Critical time pressure with settlement deadlines measured in hours, not days
Accuracy and Compliance
- Manual data entry introducing errors that could cost millions in trading discrepancies
- Stringent regulatory requirements demanding complete audit trails
- Risk of non-compliance penalties due to missed documentation or incorrect classifications
Operational Inefficiency
- Staff spending 80% of their time on repetitive data entry tasks
- Inability to quickly locate historical documents for audits or disputes
- No centralised system for tracking document status across departments
- Limited visibility into operational metrics and employee performance
Competitive Disadvantage
- Slower response times compared to digitally advanced competitors
- Missed trading opportunities due to processing delays
- Difficulty scaling operations during market volatility
The Solution: AI-Driven Intelligent Document Processing
Flexi IT designed and implemented a sophisticated document processing ecosystem that leverages artificial intelligence, cloud infrastructure, and modern microservices architecture.
Intelligent Document Ingestion
The system accepts documents through multiple channels, ensuring seamless integration with existing workflows:
- Email Integration: AWS SES captures incoming emails, automatically extracting attachments for processing
- Direct Upload: Web interface and S3 bucket integration for bulk document uploads
- API Access: RESTful APIs enabling third-party system integration
Advanced AI Processing Pipeline
At the heart of the solution lies a multi-model AI approach:
Document Understanding
- Llama Index for industry-leading OCR and document structure recognition
- Converts scanned documents, handwritten notes, and complex tables into searchable text
- Maintains formatting integrity for downstream processing
Intelligent Classification
- GPT-4o-mini analyses document content to automatically categorise by type
- Custom-trained models recognise industry-specific document formats
- 99.7% accuracy in distinguishing contracts, invoices, reports, and confirmations
Data Extraction and Structuring
- Anthropic Claude extracts key information into predefined JSON structures
- Handles complex multi-page contracts with nested data relationships
- Validates extracted data against business rules and regulatory requirements
Semantic Search Capabilities
- Natural language processing transforms user queries into structured searches
- Vector embeddings enable concept-based document discovery
- ElasticSearch powers lightning-fast retrieval across millions of documents
Scalable Microservices Architecture
The platform's technical foundation ensures reliability, performance, and future growth:
Container Orchestration
- Docker containers provide consistent deployment across environments
- Docker Compose enables rapid scaling during peak trading periods
- Isolated services prevent single points of failure
Message Queue Architecture
- Apache Kafka ensures zero data loss during processing
- Asynchronous processing handles volume spikes smoothly
- Built-in retry mechanisms for resilient operations
Data Storage Strategy
- PostgreSQL for transactional data and user management
- ElasticSearch for document indexing and search
- AWS S3 for secure, cost-effective document storage
- Redis for high-speed caching and session management
Monitoring and Observability
- Prometheus collects real-time system metrics
- Grafana dashboards provide instant visibility into operations
- Sentry aggregates errors across all microservices
- Custom metrics track business KPIs alongside technical performance
Implementation Approach
Flexi IT's agile implementation methodology ensured minimal disruption to ongoing operations:
Project Team Composition Our lean, expert team delivered this complex project with remarkable efficiency:
- 1 AI/ML Python Developer - Led the implementation of AI models and processing pipeline
- 1 No-code Developer - Specialised in N8N.io integration for workflow automation
- 1 QA Engineer - Ensured system reliability and accuracy across all components
- 1 Project Manager - Coordinated delivery and stakeholder communication
Innovative Technical Solutions
Semantic Search Revolution
Traditional keyword searches often missed relevant documents due to industry jargon and varying terminology. Flexi IT implemented an AI-powered semantic search that understands context:
User Query: "Show me contracts over $2000 with Example Company from Q3 2024 uploaded last month"
AI Translation:
{
"doc_types": ["contracts"],
"contracts_filters": {
"sum": "ge:2000",
"counterparties": ["Example Company"],
"signature_dates": ["from": "01.07.2024", "to": "30.09.2024"]
},
"dates": [{"from": "-1M", "to": "now"}]
}
This intelligent translation enables precise document retrieval regardless of how users phrase their queries.
AI Rate Limiting
To prevent API throttling whilst maintaining processing speed, Flexi IT developed a sophisticated rate-limiting system using Redis and Lua scripts. The system:
- Tracks token usage across all AI models
- Automatically queues requests when approaching limits
- Ensures continuous processing without service interruptions
Comprehensive Error Handling
Custom N8N workflows capture and route errors to Sentry, providing:
- Centralised error tracking across all services
- Automated alerting for critical issues
- Detailed debugging information for rapid resolution
Business Outcomes and ROI
The AI-powered document processing system delivered transformative results:
Operational Efficiency
- 75% reduction in document processing time
- 90% decrease in manual data entry requirements
- 4x faster document retrieval for audits and compliance checks
- Zero backlog maintained even during peak trading periods
Quality and Accuracy
- 99.8% accuracy in data extraction and classification
- Eliminated manual transcription errors
- 100% audit trail compliance for regulatory requirements
- Real-time validation prevents downstream processing errors
Employee Satisfaction
- Staff refocused on high-value analytical tasks
- 50% reduction in overtime during busy periods
- Improved job satisfaction scores
- Lower turnover in operations teams
Competitive Advantage
- Faster response to market opportunities
- Enhanced decision-making through real-time analytics
- Scalable infrastructure supporting 10x document volume
- Foundation for future AI-driven innovations
Technology Stack Excellence
Flexi IT's technology choices reflect industry best practices and future-proof architecture:
AI and Machine Learning
- Llama Index for document understanding
- OpenAI GPT-4o-mini for classification
- Anthropic Claude for data extraction
- Custom models for industry-specific needs
Infrastructure and DevOps
- Docker and Docker Compose for containerisation
- AWS cloud services (S3, SES, Lambda)
- Let's Encrypt for automated SSL management
- Digital Ocean for hosting environments
Data Management
- PostgreSQL for relational data
- ElasticSearch for search and analytics
- Redis for caching and rate limiting
- Apache Kafka for message queuing
Monitoring and Quality
- Prometheus and Grafana for metrics
- Sentry for error tracking
- Black, mypy, ruff, and flake8 for code quality
- Comprehensive testing frameworks
Lessons Learnt and Best Practices
Through this implementation, Flexi IT identified key success factors for AI-powered document processing:
- Start with the User: Understanding actual workflows trumps technical sophistication
- Iterate Rapidly: Quick feedback loops accelerate AI model improvement
- Plan for Scale: Architecture decisions made early determine future capabilities
- Monitor Everything: Comprehensive observability enables proactive optimisation
- Embrace Microservices: Isolated services provide flexibility and resilience
Future Roadmap
The platform's modular architecture enables continuous enhancement:
- Advanced analytics for predictive insights
- Multi-language document support
- Integration with blockchain for smart contracts
- Extended AI capabilities for complex decision support
Why Flexi IT?
This project showcases Flexi IT's core competencies:
AI Integration Expertise
- Deep understanding of modern AI capabilities
- Practical experience implementing production AI systems
- Ability to combine multiple AI models for optimal results
Scalable Architecture Design
- Microservices expertise for enterprise systems
- Cloud-native development practices
- Performance optimisation for high-volume processing
Rapid Delivery
- MVP delivered in just 3 months from concept
- Lean team approach for cost-effective development
- Agile methodology ensuring continuous value delivery
Industry Understanding
- Knowledge of commodity trading workflows
- Appreciation for compliance requirements
- Focus on business outcomes, not just technology
Conclusion
Flexi IT's AI-powered document processing platform represents a paradigm shift in how commodity trading firms handle critical documentation. By combining cutting-edge AI with robust architecture, we've created a solution that not only solves today's challenges but provides a foundation for tomorrow's innovations.
The measurable improvements in efficiency, accuracy, and employee satisfaction demonstrate the transformative power of well-implemented AI solutions. As the commodity trading industry continues to evolve, our client now possesses the technological advantage needed to thrive in an increasingly digital marketplace.
Ready to transform your document processing?
Contact Flexi IT today to discover how our AI integration expertise and scalable architecture solutions can revolutionise your operations. Whether you're drowning in documents or seeking competitive advantage through intelligent automation, we have the experience and technology to deliver results.
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