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Hello! I'm John Marshall, a Senior Full-Stack Software Engineer with 8+ years of experience. I specialize in architecting cohesive applications where frontend, backend, and deployment layers align around clean, modular design principles. My expertise spans backend development with Python ecosystems (Django, FastAPI) and Kotlin with Ktor, paired with modern frontend frameworks like Vue.js and React. I deliver production-ready systems with cloud-native practices to ensure fast onboarding, efficient feature delivery, and long-term maintainability. In my work, I architect scalable microservices, implement secure authentication, and build reusable frontend components that integrate smoothly with backend services. I also design monitoring pipelines with Prometheus and Grafana, and I explore AI-driven analytics to enhance data-driven decision-making. I'm passionate about maintainable code, strong collaboration, and delivering impact across teams.…Hello! I'm John Marshall, a Senior Full-Stack Software Engineer with 8+ years of experience. I specialize in architecting cohesive applications where frontend, backend, and deployment layers align around clean, modular design principles. My expertise spans backend development with Python ecosystems (Django, FastAPI) and Kotlin with Ktor, paired with modern frontend frameworks like Vue.js and React. I deliver production-ready systems with cloud-native practices to ensure fast onboarding, efficient feature delivery, and long-term maintainability. In my work, I architect scalable microservices, implement secure authentication, and build reusable frontend components that integrate smoothly with backend services. I also design monitoring pipelines with Prometheus and Grafana, and I explore AI-driven analytics to enhance data-driven decision-making. I'm passionate about maintainable code, strong collaboration, and delivering impact across teams.

John Marshall

Full Stack Developer, Back-End Developer, Front-End Developer, +1

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Hello! I'm John Marshall, a Senior Full-Stack Software Engineer with 8+ years of experience. I specialize in architecting cohesive applications where frontend, backend, and deployment layers align around clean, modular design principles. My expertise spans backend development with Python ecosystems (Django, FastAPI) and Kotlin with Ktor, paired with modern frontend frameworks like Vue.js and React. I deliver production-ready systems with cloud-native practices to ensure fast onboarding, efficient feature delivery, and long-term maintainability. In my work, I architect scalable microservices, implement secure authentication, and build reusable frontend components that integrate smoothly with backend services. I also design monitoring pipelines with Prometheus and Grafana, and I explore AI-driven analytics to enhance data-driven decision-making. I'm passionate about maintainable code, strong collaboration, and delivering impact across teams.…Hello! I'm John Marshall, a Senior Full-Stack Software Engineer with 8+ years of experience. I specialize in architecting cohesive applications where frontend, backend, and deployment layers align around clean, modular design principles. My expertise spans backend development with Python ecosystems (Django, FastAPI) and Kotlin with Ktor, paired with modern frontend frameworks like Vue.js and React. I deliver production-ready systems with cloud-native practices to ensure fast onboarding, efficient feature delivery, and long-term maintainability. In my work, I architect scalable microservices, implement secure authentication, and build reusable frontend components that integrate smoothly with backend services. I also design monitoring pipelines with Prometheus and Grafana, and I explore AI-driven analytics to enhance data-driven decision-making. I'm passionate about maintainable code, strong collaboration, and delivering impact across teams.

Available to hire

Hello! I’m John Marshall, a Senior Full-Stack Software Engineer with 8+ years of experience. I specialize in architecting cohesive applications where frontend, backend, and deployment layers align around clean, modular design principles. My expertise spans backend development with Python ecosystems (Django, FastAPI) and Kotlin with Ktor, paired with modern frontend frameworks like Vue.js and React. I deliver production-ready systems with cloud-native practices to ensure fast onboarding, efficient feature delivery, and long-term maintainability.

In my work, I architect scalable microservices, implement secure authentication, and build reusable frontend components that integrate smoothly with backend services. I also design monitoring pipelines with Prometheus and Grafana, and I explore AI-driven analytics to enhance data-driven decision-making. I’m passionate about maintainable code, strong collaboration, and delivering impact across teams.

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Work Experience

Senior Full-Stack Engineer at Redwood Software Inc.

March 20, 2023 - February 20, 2026

Led backend architecture redesign for internal data processing systems, improving API response performance by over 45% through asynchronous FastAPI implementation. Designed and deployed scalable microservices on AWS ECS, reducing infrastructure cost by ~30% through optimized container resource allocation. Built secure authentication and authorization systems using JWT and role-based access control. Developed reusable frontend components and integrated them with backend services to deliver cohesive full-stack features. Implemented real-time monitoring and logging pipelines using Prometheus and Grafana, significantly reducing incident response time. Integrated AI-driven predictive analytics into backend services to enhance data-driven decision-making. Refactored legacy Django modules into modular components to improve maintainability and reduce technical debt.

Full-Stack Developer at Sumit Digital Marketing Group

May 20, 2021 - February 20, 2023

Architected RESTful APIs using Django and FastAPI for enterprise SaaS applications serving thousands of monthly active users, ensuring clear API contracts and robust error handling. Built responsive frontend interfaces using React and Next.js, ensuring consistent API integration and responsive design. Improved database query performance by 40% through advanced indexing, query optimization, and ORM refactoring to enable scalable data models. Implemented CI/CD pipelines with Docker and GitHub Actions, accelerating deployment cycles and reducing release errors, preparing applications for Kubernetes-ready deployments. Designed background task processing systems using Celery and Redis to handle large-scale asynchronous workloads efficiently. Strengthened application security by implementing OAuth2 authentication flows and encrypted data handling.

Full-Stack Engineer at Alerio Tech Group

July 20, 2019 - December 20, 2020

Engineered backend services for enterprise clients using Flask and Django, ensuring high availability and scalable architecture with a focus on cleanup separation of concerns. Developed API gateways and centralized authentication services that standardized communication across multiple internal systems. Built frontend features using React and Next.js, ensuring consistent API integration and responsive design. Reduced server downtime by implementing containerized deployments using Docker and automated health-check systems. Optimized MySQL and PostgreSQL database performance through schema redesign and performance benchmarking. Delivered AI-integrated features by embedding machine learning inference endpoints into production systems.