Stephen Thomas

– Led backend development of Node.js and GraphQL microservices using Express and Redis, supporting payments, loans, and real time transaction data. – Developed micro frontends using React, and TypeScript, improving modularity and UI load times. – Improved peak time payment performance by 40 percent through caching redesign and routing optimizations. – Shipped mobile features in React Native including biometric login, offline support, and fraud alerts. – Automated onboarding and compliance workflows using OpenAI for document processing and entity extraction, reducing manual review by 30 percent. – Implemented RAG pipelines with LLMs to support payment compliance and fraud checks, improving speed and accuracy. – Delivered AWS native solutions using Lambda, API Gateway, ECS, S3, and DynamoDB while meeting PCI compliance. – Mentored junior engineers and supported the team with code reviews and architecture decisions. – Worked closely with stakeholders and users to build fintech SaaS features that truly meet their needs.

– Built a multi tenant ecommerce platform using React, Next.js, and TailwindCSS, improving performance and customization speed. – Developed GraphQL and REST APIs with Python and Django for catalog, cart, and order features. – Implemented PostgreSQL row level security and Prisma tenant isolation for safer multi tenant operations. – Integrated Stripe for tenant specific payments, reducing payment failures during high traffic periods. – Added Redis rate limiting and throttling to stabilize the platform during peak load. – Introduced CI/CD with GitHub Actions, reducing deployment time by 50 percent. – Fixed recurring seasonal performance issues through tenant aware caching and improved load distribution.

– Built analytics dashboards using Vue.js, D3, and Highcharts for internal and client reporting. – Created Flask APIs for real time and historical data. – Designed data pipelines with Kafka and Kinesis to reduce dashboard latency. – Managed AWS infrastructure including EC2, S3, and RDS. – Added SAML SSO support for enterprise security requirements.

– Built digital marketing and automation tools using Laravel and MySQL. – Created reusable Bootstrap UI components that reduced campaign setup time by 40 percent. – Added tracking with Google Analytics and UTM parameters for better campaign attribution. – Set up CI/CD using CircleCI and Heroku.