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I am Colin Billing, a senior full stack engineer with 13 years of experience designing scalable cloud-native platforms across EdTech, eCommerce, FinTech, AI gaming, and energy analytics. I specialize in architecting end-to-end systems, integrating AI/LLM capabilities, and leading the full software development lifecycle from product discovery to production operations. I enjoy building agentic AI-powered platforms that streamline fragmented workflows into seamless, user-centric ecosystems. Passionate about conversational AI and real-time data-driven applications, I thrive in startup and enterprise environments, collaborating with executives, product, and design teams to shape long-term AI roadmaps, secure architectures, and scalable backend services.…I am Colin Billing, a senior full stack engineer with 13 years of experience designing scalable cloud-native platforms across EdTech, eCommerce, FinTech, AI gaming, and energy analytics. I specialize in architecting end-to-end systems, integrating AI/LLM capabilities, and leading the full software development lifecycle from product discovery to production operations. I enjoy building agentic AI-powered platforms that streamline fragmented workflows into seamless, user-centric ecosystems. Passionate about conversational AI and real-time data-driven applications, I thrive in startup and enterprise environments, collaborating with executives, product, and design teams to shape long-term AI roadmaps, secure architectures, and scalable backend services.

Colin Billing

Full Stack Developer, Back-End Developer, Front-End Developer, +2

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I am Colin Billing, a senior full stack engineer with 13 years of experience designing scalable cloud-native platforms across EdTech, eCommerce, FinTech, AI gaming, and energy analytics. I specialize in architecting end-to-end systems, integrating AI/LLM capabilities, and leading the full software development lifecycle from product discovery to production operations. I enjoy building agentic AI-powered platforms that streamline fragmented workflows into seamless, user-centric ecosystems. Passionate about conversational AI and real-time data-driven applications, I thrive in startup and enterprise environments, collaborating with executives, product, and design teams to shape long-term AI roadmaps, secure architectures, and scalable backend services.…I am Colin Billing, a senior full stack engineer with 13 years of experience designing scalable cloud-native platforms across EdTech, eCommerce, FinTech, AI gaming, and energy analytics. I specialize in architecting end-to-end systems, integrating AI/LLM capabilities, and leading the full software development lifecycle from product discovery to production operations. I enjoy building agentic AI-powered platforms that streamline fragmented workflows into seamless, user-centric ecosystems. Passionate about conversational AI and real-time data-driven applications, I thrive in startup and enterprise environments, collaborating with executives, product, and design teams to shape long-term AI roadmaps, secure architectures, and scalable backend services.

Available to hire

I am Colin Billing, a senior full stack engineer with 13 years of experience designing scalable cloud-native platforms across EdTech, eCommerce, FinTech, AI gaming, and energy analytics. I specialize in architecting end-to-end systems, integrating AI/LLM capabilities, and leading the full software development lifecycle from product discovery to production operations. I enjoy building agentic AI-powered platforms that streamline fragmented workflows into seamless, user-centric ecosystems.

Passionate about conversational AI and real-time data-driven applications, I thrive in startup and enterprise environments, collaborating with executives, product, and design teams to shape long-term AI roadmaps, secure architectures, and scalable backend services.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

English

Fluent

Work Experience

Senior Full Stack Engineer at Outschool

July 1, 2023 - Present

Architected and implemented a scalable AI-powered engagement platform using Next.js, TypeScript, Node.js, and AWS to support real-time virtual classroom interactions across thousands of concurrent users. Led integration of OpenAI GPT-4 APIs for conversational tutoring assistants and automated content moderation, reducing manual review workload by 35%. Designed agent-like backend workflows with Python and FastAPI to orchestrate LLM-driven recommendations, task automation, and personalized learning paths. Built a modular microservices architecture with NestJS and PostgreSQL, enabling independent scaling of enrollment, billing, and live-session services. Implemented vector database search for semantic content retrieval and real-time features via WebSockets and Redis. Deployed via AWS EKS with CI/CD pipelines and secure OAuth2/JWT authorization.

Full Stack Engineer at NIKE

July 1, 2020 - June 30, 2023

Developed enterprise-grade eCommerce and internal operations platforms using React, Node.js, and AWS. Built microservices and Kafka-based event-driven systems to handle order processing and inventory updates at scale. Designed RESTful and GraphQL APIs for product catalog, checkout, and logistics, modernizing legacy systems into containerized microservices. Implemented cloud-native deployments with Docker and Kubernetes; enhanced personalization features via Python analytics services; led architecture reviews and cost optimization efforts.

AI Software Engineer at zGames

July 1, 2018 - June 30, 2020

Designed AI-driven gameplay systems using Python and TensorFlow to power adaptive NPC behaviors and decision-making engines. Built conversational chatbot prototypes for interactive gaming experiences and integrated ML inference services into production game servers with optimized latency. Created data pipelines for model training/evaluation and collaborated with designers to align AI capabilities with immersive user experiences.

Software Development Engineer at Paypal

October 1, 2015 - June 30, 2018

Engineered secure backend services in JavaScript and Java supporting payment processing and financial transaction workflows. Built high-availability APIs handling sensitive data while complying with security and regulatory standards. Improved fraud detection data pipelines by integrating Python-based analytics components; optimized PostgreSQL performance; collaborated with security teams on encryption and secure authentication; contributed to cloud modernization and production monitoring.

Software Consultant at Tachyus

July 1, 2013 - September 30, 2015

Developed data analytics platforms for energy clients, building scalable backend services to process large oil and gas datasets. Created interactive frontend dashboards and implemented ETL pipelines to ingest structured/unstructured data. Collaborated with domain experts to translate requirements into technical solutions and delivered production-ready solutions in iterative cycles.