arijit das

Strategic, results-oriented Senior Directorwith over 15 years’ experience across fintech, AI-native, and cloud-native platforms, including roles at Amazon,IBM, and Upstart.Experience driving engineering strategy, operation efficiency while leading intelligent workflow teams using AI/ML and AGI (genAI) to automate critical business processes. Thrive in fast-paced environments where technical innovation drives business value, and bring a deep track record in scaling teams, modernizing architecture, and delivering measurable outcomes. Speaker in multiple AWS conferences and developer communities.

Director of Engineering, Upstart, Dallas, TX                                                                                                                 08/2022 – Present

Technical Leadership & Business Impact:

• Built Real-Time Fraud Detection System: Led development of LangGraph based Agentic AI workflow for real time approval of loans through custom risk modelsand 3rd PartySaaS integrations such as Plaid,Socure and ChexAdvisor which resulted in 12% reduction of fraudulent loans
• Design and Build a Personal Helper Agent for Customer Service Reps to assist them with querying customer profile and load data interactively to provide more accurate and meaningful response to customers. This led to improved NPS by 28%. 
• Develop custom Upstart LLM through fine tuning pretrained open source model (Llama-3.1-8B) to secure sensitive data propagation to Frontier Models
• Developed ML-Powered LendingIntelligence Platform: Led the design and launch of ensembleML models combiningmultivariate regression models (XGBoost), and traditional risk models, resulting in 12% increase in loan originations($50M+ additional revenue) and two new loan product launches.
• Implemented Cost Optimization Framework: Drive design and development of distributed model training frameworkusing Dask libraries and Air flow orchestration to optimize training instance creation and right sizing, cutting ML

infrastructure costsby 40%

Engineering Organization &Operations:

• Scaled cross-functional engineering organization from 25 to 60+ engineersacross ML, Platform, and Product teams

• Oversaw CTO-led AWS cost reduction initiative, reviewing infrastructure patterns and implementing optimization strategies achieving $10M annual savings
• Developed ‘PatentUp’ Innovation Program to encourageinnovation and harvestpatentable ideas to accelerate the IP collateral of the organization.
• Established technicalhiring standards, conducted200+ technical interviews, and built career progression frameworks for senior engineers

Key Technologies: Python, Java, Lambda, DynamoDB,EKS, Terraform, React, Node.js, PostgreSQL, Redis, Apache Kafka, SQS, Airflow, XGBoost, LangChain, LangGraph, RAG, Chroma (Vector DB), QLoRA based LLM fine Tuning, OpenAI SDK, MCP

Senior Manager,Amazon Web Services(AWS), Dallas, TX                                                                              12/2020 – 08/2022

0-to-1 Product Launch:

• Incubated new AWS Managed Serviceand led the design and launch of serverless Materialized Views on top of AWS Glue dataset using native implementation of data and control plane
• Collaborated closely with Product Management to define a 3-5 year product roadmap and scaled the engineering team from 0 to 45 engineers across US and India, showcasing strong organizational growth and strategic planning capabilities.

• Establish the right engineering team structure to deliver high quality, maintainable data product to implement the business vision.
• Create mechanisms to continuously improveby reducing Operational load, tech debt and infrastructure cost.

Client Engagement &Digital Transformation:

• Led ADP Compliance Engine Modernization and migrated legacy monolithic systemsto serverless architecture using Lambda, API Gateway, and DynamoDB, achieving 95% performance improvement and 65% cost reduction.
• Managed digital transformation initiative for HPI to automateinvoice processing throughAWS managed serviceslike Textract. Designed a workflow for the invoice categorization and processing of unstructured artifacts which are hand written and/ rubber stamped info with a KPI to reduce 20 headcount in the invoice receivable team.

Key Technologies: Java,Spring Boot, AWS (Lambda, API Gateway, Step Functions, Glue), DynamoDB, CloudFormation, Jenkins, Docker, Kubernetes, Elasticache, AMZN Textract, OCR, PostgreSQL

Director, Software Engineering, IBM , Dallas, TX                                                                                                      8/2016 to 11/2020

Enterprise Platform Development:

• Program Director for $20M digitaltransformation initiative to implement a cloud-native MeteredTelecom Platform. Architected subscription-based billing system for SOMOS and FCC, handling millions of telecom transactions with real-time rating and charging capabilities.
• Implemented Regulatory Compliance Frameworks for FCC compliance, includingdata validation, audit trails, and regulatory filing automation using
• Re-architected legacy systemsusing microservices patterns, containerization, and cloudmigration strategies, achieving

$8M annual savings and $12M new revenue

Cross functional Leadership:

• Communicate across businessfunctions including product,compliance, legal; influence the roadmap and product development often without direct authority.
• Manage team performance, including coaching for career growth,and create a healthy team environment
• Effectively communicate team goals, seek out information needed for the team to be impactful and provide resources required to achieve goals while removing roadblocks along the way

Key Technologies: Java,Spring, Kubernetes, PostgreSQL, ELK, Kafha, AWS transit Gateway,AWS Compute Services,Web Access Firewall

Earlier Engineering Leadership Roles

Senior Engineering Manager | Mr. Cooper | Dallas, TX | 2014-2016

• Built mortgage servicing platform handling $100B+ in loan portfolios
• Implemented automated underwriting systems and borrowerself-service portals

Engineering Manager| Verizon | Dallas, TX | 2012-2014

• Developed telecom billingand customer management systems
• Led migration to cloud-native architecture for carrier-grade applications

Technical Lead | JCPenney, Accenture, Freddie Mac, Wipro| 2000-2012

• Delivered e-commerce platforms, financial systems, and enterprise applications
• Specialized in Java/J2EE development and database architecture

Educational Qualification

• M.S. in Software Engineering | BITS Pilani,India
• B.S. in ComputerEngineering | Bangalore University, India