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John M. — Lead Developer from Philippines

John M.

Lead Developer

Philippines 6+ years 3000 - 6000 USD per month
Actively lookingNew to Platform
Languages
English
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About

Senior Full Stack Developer and Lead Engineer with 10 years of hands-on experience designing, building, modernizing, and operating production software across frontend, backend, mobile, cloud, data, DevOps, and AI/ML systems. Polyglot engineer with practical experience across Python, JavaScript, TypeScript, Java, C#, PHP, Ruby, Go, SQL, and Bash, including Python frameworks (FastAPI, Django, Flask), Node.js frameworks (NestJS, Express.js, Fastify), Java/Spring ecosystems, C#/.NET platforms, PHP/Laravel-based services, and modern JavaScript/TypeScript application stacks. Builds scalable full-stack products with React, Next.js, Redux, Vue.js, Nuxt.js, Angular, RxJS, TanStack Query, responsive UI systems, SSR/SSG, real-time data visualization, React Native, and Flutter. Designs distributed systems using microservices, event-driven architecture, REST APIs, GraphQL, gRPC, WebSockets, Kafka, RabbitMQ, background job processing, caching, serverless computing, and cloud-native patterns. Delivers production AI/ML and generative-AI capabilities using RAG, LangChain, LangGraph, HuggingFace, TensorFlow, PyTorch, OpenAI API, Gemini, Vertex AI, vector databases, embeddings, semantic search, NLP, and prompt engineering. Experienced across AWS, GCP, Azure, Docker, Kubernetes, Terraform, Pulumi, CI/CD, observability, relational and NoSQL databases, security, performance engineering, technical leadership, architecture decision-making, mentoring, code quality, and cross-functional delivery.

Why hire me

Employers should hire me because I bring around 10 years of end-to-end software engineering experience across frontend, backend, databases, cloud, DevOps, mobile, and AI. I can build scalable backend systems with Node.js/TypeScript, Python, Java, .NET, and PHP, while also delivering modern frontend applications with React, Next.js, Vue, and Angular. I have hands-on experience with microservices, REST, GraphQL, real-time systems, SQL and NoSQL databases, AWS, GCP, Azure, Docker, Kubernetes, CI/CD, and infrastructure as code. Beyond coding, I bring strong ownership, architecture and performance optimization skills, production troubleshooting, mentoring, and cross-functional collaboration. I can contribute across the full software lifecycle and help teams deliver reliable, maintainable, and scalable products faster.

Experience

  • Lead Developer

    SafebrandTech · 2022 — Present
    Designed cloud-native systems using Python (FastAPI, Django, Flask) and Node.js (NestJS, Express.js), handling over 2 million daily API requests while achieving 99.99% uptime. Deployed numerous microservices on AWS/GCP, optimizing costs through effective resource management. Integrated HuggingFace, LangChain, and TensorFlow models into enterprise applications, automating about 40% of document processing tasks. Improved a LangChain-based chatbot's response time significantly and enhanced accuracy through precise fine-tuning. Established CI/CD processes with GitHub Actions and Jenkins, greatly reducing deployment times. Enhanced PostgreSQL and DynamoDB performance to minimize latency and reduce partition incidents. Developed business metric dashboards using D3.js and Chart.js and constructed component-driven UIs with

  • Senior Full Stack Developer

    Deegix Pte Ltd · 2018 — 2022
    Migrated multiple monolithic applications into a microservices architecture using Node.js and Express, improving scalability to handle increased traffic. Reengineered the customer-facing UI utilizing React and Redux to enhance maintainability and load performance. Enhanced search capabilities with Elasticsearch, achieving a reduction in query latency for a large dataset. Secured APIs for compliance standards through OAuth2.0 and SSO implementations. Employed Docker for environment containerization, improving developer experience. Developed a comprehensive frontend testing strategy, increasing coverage and decreasing regression bugs significantly.

  • Full Stack Developer

    Nimble · 2016 — 2018
    Developed reliable background task processing systems using Python and Node.js, managing substantial daily job loads with high reliability. Automated deployment processes with Docker, facilitating a future migration to Kubernetes. Upgraded a legacy frontend by incorporating React.js and Vue.js, implementing real-time capabilities through WebSockets and GraphQL. Streamlined release cycles by applying DevOps methodologies via an automated CI/CD pipeline. Promoted test-driven development and established monitoring practices, enhancing overall system uptime.