Fintech • NLP • Intelligence

[REDACTED] Pakistan Neobank

Alternative Credit Scoring & Banking AI

Client:Pakistan-Based Neobank (Karachi)
Timeline:12 months (2025-2026)
Team:AI Engineering, Mobile & Risk Analysts
Alt-CreditLlama 3Roman UrduXGBoostWhatsApp Business APIFintech
System Architecture

The Challenge

A licensed Pakistani neobank targeting the 100M+ underbanked population struggled to serve customers with zero traditional credit history. Their manual underwriting took 14 days with a 73% rejection rate, while customer support was overwhelmed by 40,000+ monthly WhatsApp queries with an 11-hour response lag.

  • High rejection rates for first-time borrowers due to thin credit files
  • Operational bottleneck in manual loan underwriting
  • Poor customer support scaling with 11-hour response times
  • Lack of financial literacy among target demographic

The Solution

Implemented a multi-dimensional AI layer combining alternative credit scoring, real-time underwriting, and an Urdu-first LLM banking assistant.

  • Alternative Credit Scoring Engine using 50+ non-traditional behavioral signals
  • 90-Second Underwriting Pipeline for real-time loan decisioning
  • Urdu-First AI Banking Assistant (Llama 3) for Roman Urdu and Urdu script
  • WhatsApp Business API Integration for seamless customer service
  • Automated Regulatory Reporting per SBP (State Bank of Pakistan) guidelines

Lexer System's Approach

1

Behavioral Feature Engineering

Designed signals from mobile airtime patterns, utility regularity, and app behavioral data to build creditworthiness without traditional CIBIL scores.

2

Sovereign LLM Fine-Tuning

Fine-tuned Llama 3 on local banking regulations and Urdu dialogue to create a fluent, compliant banking assistant for underbanked users.

3

Real-Time Pipeline Architecture

Built a high-performance decision API using FastAPI and Kafka to integrate document verification (NADRA) and risk scoring into a 90-second flow.

4

Risk Intelligence Dashboard

Developed an internal platform for risk officers to monitor portfolio health, model drift, and default trends in real-time.

Results & Impact

14d → 90s
Underwriting Time

For returning customers, 4h for first-time

+34%
Approval Rate

Approval increased from 27% to 61% for first-time

-42%
Default Rate

Reduction in defaults from 19% to 11%

79%
Support Resolution

Queries resolved by AI without human intervention

Technical Highlights

Roman Urdu NLP

Advanced fine-tuning to handle phonetic Roman Urdu used widely in Pakistan, which traditional LLMs struggle with.

Non-Traditional Scoring

Ensemble models that derive stability and ability-to-pay from unconventional data points like ecommerce history.

SBP Compliance

Governance framework built to satisfy Pakistan's central bank AI transparency and security requirements.

Lessons Learned

  • Alternative data is a superior predictor of repayment in emerging markets than traditional bureau data
  • Localization (Roman Urdu) is the key to massive adoption in the underbanked demographic
  • Continuous learning loops are vital as repayment behavior shifts after the first loan cycle

Next Steps

  • Integrate AI-powered wealth management and saving suggestions
  • Implement biometric voice authentication for increased security in Urdu queries
  • Expand to SME lending using supply-chain transaction data

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