Staff Lead Full-Stack Engineer & Architect

USMAN SAGHEER

Staff / Lead Full-Stack Software Engineer & Software Architect

TypeScript React Node.js Python Java C#/.NET AWS AI/LLM Distributed

Systems

Bellmawr, New Jersey, USA

************@******.** linkedin.com/in/i-am-usmans/

PROFESSIONAL SUMMARY

Staff / Lead Full-Stack Software Engineer and Software Architect with 10+ years of experience

building and leading production SaaS platforms, APIs, distributed systems, database-driven

applications, integrations, and AI-enabled solutions. Strong hands-on experience with

TypeScript, React, Node.js, Python, Java, C#/.NET, PHP, SQL, AWS, Docker, Kubernetes,

and CI/CD.

Experienced in end-to-end architecture across frontend, backend, APIs, databases,

integrations, cloud infrastructure, testing, deployment, and production support. Strong

background in REST APIs, asynchronous workflows, relational/NoSQL data, caching,

search, scalability, performance, and reliability.

Technical leader experienced coordinating and mentoring 6–12 engineers, driving architecture

decisions, technical standards, code reviews, cross-team initiatives, and delivery while

remaining hands-on. Strong AI/LLM experience across RAG, embeddings, agents, MCP,

tool/function calling, structured outputs, guardrails, evaluation, and

OpenAI/Claude/Gemini integrations.

CORE TECHNICAL SKILLS

Languages: TypeScript, JavaScript, Python, Java, C#, C++, .NET, PHP, SQL

Frontend: React, Next.js, Angular, Vue.js, TypeScript, JavaScript, HTML5, CSS3, AJAX,

Bootstrap

Backend: Node.js, Python, FastAPI, Flask, Java, C#, .NET, ASP.NET Core, PHP, Laravel,

REST, SOAP

Databases: PostgreSQL, MySQL, SQL Server, SQLite, MongoDB, Redis, Elasticsearch, SQL,

NoSQL, Data Modeling, Indexing, Query Optimization, Caching

Cloud & DevOps: AWS, Docker, Kubernetes, Git, GitHub, GitLab, Jenkins, CI/CD, Deployment

Automation

Architecture: Full-Stack Architecture, SaaS, Distributed Systems, API Architecture,

Event-Driven Workflows, Cloud Architecture, System Integration, Scalable Design

AI / LLM: Generative AI, RAG, Prompt/Context Engineering, Embeddings, Vector/Semantic

Search, Hybrid Search, Reranking, AI Agents, Agentic Workflows, MCP, Tool/Function Calling,

Structured Outputs, Guardrails, LLM Evaluation

AI APIs/Frameworks: OpenAI, Claude, Gemini, LangChain, LangGraph, MCP SDK

Engineering Leadership: Technical Leadership, Architecture Reviews, Code Reviews,

Mentoring, Technical Planning, SDLC, Agile, Automated Testing, Production Troubleshooting

Security & Reliability: Application Security, Validation, Error Handling, Logging, Monitoring,

Performance Optimization, Reliability

CMS/eCommerce: WordPress, WooCommerce, Gutenberg, Custom Themes, Custom Plugins,

Headless CMS

PROFESSIONAL EXPERIENCE

THORIUM DIGITAL — Lead Software Engineer

May 2024 – Present Hybrid

● Lead end-to-end architecture and development across React, TypeScript, Node.js,

Python, Java, C#/.NET, PHP, APIs, databases, AWS, CI/CD, and AI-enabled

workflows.

● Design scalable full-stack solutions spanning frontend, backend, REST APIs,

databases, integrations, cloud infrastructure, testing, and deployment.

● Build backend services using Node.js, Python/FastAPI, Java, C#/.NET, and PHP and

modern web applications using React, TypeScript, Angular, and Vue.js.

● Design and optimize PostgreSQL, MySQL, SQL Server, and SQLite data models,

queries, indexes, and application data access; work with MongoDB, Redis, and

Elasticsearch.

● Develop distributed and asynchronous application workflows with focus on scalability,

reliability, performance, caching, error handling, and maintainability.

● Work with AWS, Docker, Kubernetes, GitHub/GitLab, Jenkins, and CI/CD for cloud

application development and deployment.

● Lead architecture reviews, technical planning, code reviews, engineering standards, and

cross-team technical initiatives while coordinating and mentoring 6–12 engineers.

● Collaborate with product stakeholders and clients to translate business requirements into

technical designs and production-ready solutions.

● Troubleshoot complex production issues across frontend, backend, APIs, databases,

integrations, cloud infrastructure, and deployment pipelines.

● Build AI-enabled applications using RAG, embeddings, semantic/hybrid retrieval,

reranking, AI agents, Agentic workflows, MCP, tool/function calling, structured

outputs, and OpenAI/Claude/Gemini.

● Implement AI validation, guardrails, error handling, evaluation, observability, and

performance/cost optimization for production workflows.

FOXBOX DIGITAL — Senior Software Engineer

Jul 2021 – Mar 2024

● Built and maintained full-stack SaaS applications using TypeScript, React, Node.js,

Python, Java, C#/.NET, PHP, SQL, AWS, Docker, and CI/CD.

● Developed backend services, REST APIs, business logic, third-party integrations,

automation, and database-driven workflows.

● Built modern web applications with React, Angular, Vue.js, TypeScript, JavaScript,

HTML5, and CSS3.

● Designed and optimized MySQL, PostgreSQL, and SQL Server data models, queries,

indexes, and application data-access workflows.

● Worked with MongoDB and Redis for NoSQL data and caching requirements.

● Contributed to scalable application architecture, service integration, reliability,

performance optimization, logging, validation, and production troubleshooting.

● Supported AWS, Docker, Git/GitHub, CI/CD, and automated deployment workflows.

● Participated in architecture discussions, technical planning, code reviews, engineering

standards, and mentoring.

● Collaborated with product and business stakeholders to translate requirements into

maintainable technical solutions.

● Contributed to AI-enabled applications involving LLM integrations, RAG, document

processing, embeddings, retrieval, context handling, and automated workflows.

IPLEX — Full-Stack Engineer

Feb 2017 – Jun 2020

● Developed and maintained a Wi-Fi/ISP management platform using PHP, MySQL,

JavaScript, AJAX, HTML5, CSS3, APIs, and network-device integrations.

● Built customer, account, service, payment, authentication, provisioning, and operational

workflows.

● Designed relational database structures and optimized SQL queries, relationships,

indexes, and data-processing logic.

● Integrated application services with Cisco/network-device APIs for provisioning,

authentication, service activation, and operational workflows.

● Built customer-facing and administrative interfaces using JavaScript, AJAX, HTML5,

CSS3, and reusable UI components.

● Developed API-driven workflows connecting application services with network and

external systems.

● Supported systems designed for environments capable of handling 10,000+ potential

users.

● Used GitHub and CI/CD for source control, deployment, troubleshooting, and production

maintenance.

● Resolved production issues across application, database, API, network-integration,

and infrastructure layers.

EDUCATION

Master of Science — Software Engineering

COMSATS Institute of Information Technology (CIIT) 2002 – 2006

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