Allen – Python, LLM, AI

A leading global consulting and technology services provider collaborated with one of the largest telecommunications companies - Verizon - in North America to enhance digital products and services. The work focused on building scalable enterprise tools and customer-facing platforms to streamline operations, improve service delivery, and support product innovation across a complex business ecosystem.

Among others, Allen contributed in the following way:

• led backend architecture and implementation using RESTful APIs, microservices, and secure data operations;
• architected distributed backend systems on GCP, AWS, and Azure, leveraging serverless compute, storage, and databases;
• optimized SQL and NoSQL data operations for efficient indexing, fast querying, and scalable schema design;
• lead the development of sales tools supporting a $97M pipeline opportunity;
• delivered new proof of concepts (CNS 3.0, Hub360, Care Kiosk, Circuit Disconnect) contributing to over $5M in pipeline opportunities;
• spearheaded API integrations with cloud-native services to deliver scalable, high-performance solutions;
• designed and implemented modular RESTful APIs within microservices architecture to improve performance and system reliability;
• built ReactJS-based frontend applications supporting real-time data and AI-generated insights;
• integrated Large Language Models (LLMs) using Azure OpenAI and LangChain to automate email drafting, knowledge retrieval, and recommendations;
• developed Retrieval-Augmented Generation (RAG) pipelines to enhance AI applications with dynamic knowledge base access;
• integrated AWS Bedrock into backend services to operationalize foundation models for secure, real-time AI-powered workflows across RESTful microservices;
• collaborated with cross-functional client teams to align AI/ML initiatives with strategic and regulatory goals;
• participated in LLM evaluation, prompt engineering, and agent-based automation across sales, operations, and service domains;
• conducted peer code reviews, mentored junior developers, and contributed to Agile sprint planning and delivery.

A global automotive company, supporting manufacturing operations, supply chain logistics, and dealership management. The systems aimed to enhance operational efficiency, standardize business processes across regions, and integrate data flows between internal departments and external partners.

Allen was in charge of the following:

• led backend service development using REST APIs and microservices with AWS for scalability and performance;
• managed data operations with MongoDB and PostgreSQL, implementing indexing strategies and query optimization;
• implemented secure authentication and authorization with Azure AD;
• designed RESTful APIs to streamline data access, reducing latency by 20%;
• integrated third-party APIs to augment platform capabilities;
• built scalable, containerized microservices on AWS using ECS, Lambda, and RDS;
• monitored and optimized system performance using AWS CloudWatch and Azure Monitor;
• embedded LLM-driven automations using OpenAI for intelligent business process flows;
• built and deployed LLM-powered microservices using Amazon Bedrock to deliver intelligent text summarization, question answering, and data classification features with Titan and Claude models;
• developed ReactJS-based UIs to deliver engaging, responsive user experiences;
• improved frontend performance with lazy loading, reusable components, and code-splitting;
• supported Agile ceremonies and mentored junior developers to ensure alignment with coding standards and business needs.

A global IT services, consulting, and business solutions company that provided technology-driven solutions to enterprises across industries such as banking, retail, healthcare, telecommunications, and manufacturing. The client delivered large-scale software development, digital transformation, and enterprise modernization projects, helping clients improve operational efficiency, customer experience, and business agility.

Allen's main responsibilities included, but were not limited to:

• engineered backend systems with RESTful APIs, database integrations, and cloud-native services;
• tuned PostgreSQL and MongoDB for optimized performance in high-concurrency environments;
• integrated Azure OpenAI LLMs to drive product and service innovation.
• fine-tuned models using business-specific data to enhance response quality;
• delivered AI-driven chat interfaces for knowledge retrieval and task execution;
• developed and maintained dynamic, responsive web applications;
• applied React Hooks, Redux, and Context API for efficient frontend state management;
• utilized Amazon S3 for scalable static content storage and delivery;
• integrated with API Gateway to optimize backend communication;
• conducted unit and integration testing for robust, reliable software delivery;
• built reusable UI components for long-term maintainability;
• streamlined CI/CD workflows for consistent build and deployment processes;
• provided code review feedback and collaborated across Agile teams.

A technology consulting firm that specialized in developing custom web applications tailored to client requirements.

Allen's main scope of work included the following:

• built backend services for CRUD operations and data layer integration with MongoDB and PostgreSQL;
• designed and maintained backend schemas and APIs to support frontend applications;
• supported frontend development using ReactJS for seamless UI/UX.
• participated in peer code reviews, adhering to quality and security standards;
• resolved application defects and enhanced overall system stability;
• contributed to CI/CD processes, ensuring smooth production deployments;
• documented technical issues and resolutions for knowledge sharing;
• took part in Agile planning and delivery to ensure timely outcomes.

A software services provider that specialized in custom development, IT consulting, and managed support across diverse industries. It delivered end-to-end solutions - from web and mobile application development to cloud integrations and enterprise systems. By partnering closely with clients, the company streamlined operations, enhanced digital capabilities, and drove innovation.

Allen's main contributions included the following:

• developed backend modules using Node.js and PostgreSQL for dynamic data processing;
• implemented efficient microservice communication with API Gateway and backend optimization strategies;
• built and maintained full-stack web applications with a focus on backend services;
• used React Hooks and Redux to create consistent and maintainable frontend components;
• configured Amazon S3 for secure and scalable asset storage;
• applied Jest for unit and integration testing to maintain software quality;
• established CI/CD pipelines for accelerated delivery and reduced errors;
• led code reviews and mentored team members in Agile development practices.