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Work History ⭐ Senior Full Stack Developer 10+ Years Experience | AI, Automation & Scalable Systems • Architected and delivered high-performance backend systems using Django, FastAPI, and PostgreSQL, supporting over 100,000 daily active users with consistent uptime and reliability. • Developed optimized RESTful APIs with Django REST Framework and FastAPI, improving server response speed by 30%. • Built real-time, event-driven features using WebSockets through Django Channels and FastAPI, enabling seamless live interactions. • Designed and implemented advanced front-end interfaces using React.js and Vue.js, significantly enhancing UX and engagement rates. • Streamlined deployment workflows using Docker, Kubernetes, and CI/CD pipelines, reducing deployment time by 40%. • Integrated AI-powered features using OpenAI GPT and Hugging Face, boosting automation and user personalization. • Led development and mentoring efforts, guiding cross-functional teams toward best practices in scalable system design. ⭐ Full Stack Developer • Delivered enterprise-grade web applications using Django and Flask, ensuring security, scalability, and clean architecture. • Designed and optimized SQL (PostgreSQL/MySQL) and NoSQL (MongoDB/Redis) databases, ensuring high data integrity and system performance. • Migrated legacy monolithic applications into microservices using Flask and FastAPI, increasing system modularity and scalability. • Implemented secure authentication solutions using JWT, OAuth2, and role-based access control, aligned with industry security standards. • Automated internal workflows and third-party integrations using n8n, Zapier, and custom Python scripts, reducing manual workload. • Created technical documentation and conducted training sessions to elevate team knowledge and onboarding efficiency. • Built foundational chatbot prototypes using Rasa and GPT-based architectures, supporting conversational automation initiatives. ⭐ Junior Web Developer • Supported development of dynamic web applications using Flask and Django, working on models, views, templates, and API endpoints. • Built interactive front-end features using JavaScript, jQuery, and CSS frameworks such as Bootstrap and Tailwind. • Collaborated with senior developers in code reviews, debugging, and optimization, improving application performance and security. • Gained experience in automated testing using PyTest, Selenium, and unit testing frameworks, ensuring reliability and maintainability. • Assisted in integrating third-party APIs and basic automation workflows, building a foundation for advanced development skills. • Contributed to UI/UX improvements through iterative design and feedback cycles.","rating":5,"ranking":51,"position":{"position":"gold","next":{"name":"Platinum","next":"hero","description":"Platinum es el quinto nivel de Workana. ¡Estás llegando a la cima! Ahora más que nunca recuerda chequear tu actividad en la plataforma: ingresos, calificaciones y clientes satisfechos. ¡Sigue siendo un éxito! Leer más ","explain":"Un freelancer Platinum es realmente un profesional TOP. El talento Platinum conoce a sus clientes, sabe trabajar de manera remota y brinda un excelente servicio. Su carrera no para de crecer, y solamente le falta conocerte a ti. ¿Qué esperas para contratarlo? Leer más"},"name":"Gold","description":"Gold es el cuarto nivel de Workana. Estás a un paso de convertirte en un top freelancer y acceder a los mejores beneficios. Continúa el excepcional trabajo: ingresos, calificaciones y clientes satisfechos son la clave. Leer más","explain":"Un freelancer Gold ya ha trabajado con por lo menos 4 clientes diferentes y consiguió muy buenos resultados. Para estos profesionales, su reputación es muy importante. ¡No te pierdas la oportunidad de conocer su talento en tu próximo proyecto! Leer más"},"completed":3,"hourlyRate":{"rate":25,"currency":"USD"},"badges":[{"type":"membership_premium","profile":"worker","active":true}],"shouldShowHireMeDialog":false},"profileUrl":"https://www.workana.com/freelancer/76e6c62dc5b678579d3412d9be66cd67","logoUrl":"https://cf.workana.com/logos/eb85e116f55ae6b0b8d934c17923c524/bq/22401441_160_160.jpg","truncatedCompanyDescription":"? I’m William Henerson, a Malaysia-based Full Stack Developer with over a decade of experience in crafting intelligent, scalable, and automation-focused digital solutions. I specialize in integrating Large Language Mo...","ratingData":{"label":"5 of 5.00","stars":5},"countryData":{"country":"MY","name":"Malaysia","class":"flag flag-my","url":"https://www.workana.com/freelancers/malaysia?ref=freelancer_view","blankGif":"https://cf.wkncdn.com/static/assets/build/img/blank.4f4e80a62.gif"},"skillTags":[{"anchorText":"React Native","anchorLink":"https://www.workana.com/hire/react-native","isCertified":false,"title":"React Native - Freelancers"},{"anchorText":"Laravel","anchorLink":"https://www.workana.com/hire/laravel","isCertified":false,"title":"Laravel - Freelancers"},{"anchorText":"React.js","anchorLink":"https://www.workana.com/hire/react-js","isCertified":false,"title":"React.js - Freelancers"},{"anchorText":"PHP","anchorLink":"https://www.workana.com/hire/php","isCertified":false,"title":"PHP - Freelancers"},{"anchorText":"MySQL","anchorLink":"https://www.workana.com/hire/mysql","isCertified":false,"title":"MySQL - Freelancers"},{"anchorText":"Node.js","anchorLink":"https://www.workana.com/hire/node-js","isCertified":false,"title":"Node.js - Freelancers"},{"anchorText":"Chatbot","anchorLink":"https://www.workana.com/hire/chatbot","isCertified":false,"title":"Chatbot - Freelancers"},{"anchorText":"ChatGPT","anchorLink":"https://www.workana.com/hire/chatgpt","isCertified":false,"title":"ChatGPT - Freelancers"},{"anchorText":"Artificial intelligence","anchorLink":"https://www.workana.com/hire/artificial-intelligence","isCertified":false,"title":"Artificial intelligence - Freelancers"},{"anchorText":"Next.js","anchorLink":"https://www.workana.com/hire/next-js","isCertified":false,"title":"Next.js - Freelancers"},{"anchorText":"JavaScript","anchorLink":"https://www.workana.com/hire/javascript","isCertified":false,"title":"JavaScript - Freelancers"},{"anchorText":"IT & Programming","anchorLink":"https://www.workana.com/hire/it-programming","isCertified":false,"title":"IT & Programming - Freelancers"}]}],"viewAllUrl":"https://www.workana.com/freelancers?ref=freelancer_view","g11n":{"title":"Other freelancers in our spotlight:","viewAll":"View all profiles","hire":"Hire","viewDetails":"View more","completedProjects":"Completed projects:"}},"backgrounds":{"show":false},"actions":{"directPaymentUrl":"https://www.workana.com/checkout/direct/1a6164f55f3eba9669e8ef1b12b8ed41","directPaymentText":"Send direct payment"},"bannerAccelerator":null}