I Craft the
Digital Landscape
I am a Senior Full Stack Engineer at heart and, i create features that are best suited for the job at hand.
Available for work
Full Time Job
Remote Job
About Me
Senior Software Engineer with 12+ years architecting and delivering AI-powered, cloud-native platforms for healthcare, government, SaaS, and fintech clients. Proven track record modernizing legacy systems, implementing LLM-driven data validation and RAG search, and building scalable full-stack applications with C#/.NET, PHP/Laravel, JavaScript/TypeScript, and modern AI tooling. Skilled in microservices, cloud infrastructure (AWS, Azure), CI/CD automation, and secure, compliant architectures. Ready to lead engineering initiatives that transform operations through intelligent automation and scalable software solutions.
Telegram :
talentDAT0218
Email :
johnzulhelmi950218@gmail.com
Language :
English
GitHub :
github.com/john-zulhelmi
+
Years Of Experience
+
Handled Projects
+
Awards Won
My Services
01
Web Development
Build frontend applications from design, developing backend and designing database
02
AI Agent Develoment
Create easier and more effective solutions using AI
03
DApp Development
Create Smart contracts with solidity and rust, implementing web3 integration, deploying subgraph for data indexing
04
Mobile App Development
Build mobile applications using Flutter, Kotlin and React Native
05
Workflow Automation
Design and automate end‑to‑end business workflows using AI agents, tools, and integrations to streamline repetitive tasks and improve efficiency.
06
Team Lead & Project Management
Lead and manage teams, and projects, and provide guidance and support to the team
My Advantages
React
Next.js
Typescript
jQuery
Langchain
LLM
FuggingFace
TensorFlow
Pytorch
Python
NLP
Web
GenAI
Other
Skills
Work Experience
novis.ai / UK Nov 2024 - Present
Sr. Lead Full Stack Engineer
- Led cross‑functional teams to design and deliver scalable AI‑enabled workflows for knowledge‑worker use cases, improving efficiency and decision‑making across research, drafting, and analysis tasks.
- Architected and implemented full‑stack applications using modern frameworks and GenAI integrations to power end‑to‑end workflows from data ingestion and analysis to polished deliverables.
- Directed the end‑to‑end project lifecycle—from requirements gathering and technical design to deployment and performance optimization—meeting milestones on time and shortening feature‑to‑production cycles.
- Mentored and grew junior engineers, establishing a culture of continuous learning, high‑quality code, and innovation through structured code reviews and mentorship programs.
- Collaborated with stakeholders to define product scope, trade‑offs, and success metrics, translating complex requirements into clear technical roadmaps and customer‑facing deliverables.
- Oversaw integration of GenAI components (multi‑model inference, prompting, data pipelines, and monitoring) to enhance product capabilities while maintaining governance, reliability, and compliance‑oriented design.
- Drove architecture decisions for scalable, data‑driven systems, including modular microservices, event‑driven patterns, and resilient deployment strategies across cloud‑native environments.
sandrowealth / US Mar 2024 - Oct 2024
Sr.AI/ML Engineer
- Led development of an AI-powered wealth management platform, delivering automated insights, personalized investment recommendations, and scalable analytics.
- Built an interactive, user-centric dashboard with responsive design and real-time data visualization to support advisor decision-making.
- Implemented a portfolio allocation assistant featuring algorithmic optimization, scenario analysis, and risk-adjusted recommendations.
- Integrated AWS SAML 2.0 for Single Sign-On (SSO), enabling secure, seamless access across enterprise systems.
- Developed a secure “sharing drive” for advisors to collaborate on reports and documentation, including access controls and audit trails.
- Enhanced developer experience and build performance using pnpm and Turbopack, reducing package install time and hot module reload latency.
- Implemented stable, type-safe API routing with Next.js, Zod-based validation, and a Next.js router setup for robust developer ergonomics.
- Employed Drizzle ORM with PostgreSQL to deliver a lightweight, type-safe data layer and efficient query performance.
- Built a centralized cash-flow management and dynamic portfolio allocation system using Puppeteer for automation and web data extraction, enabling data-driven investment decisions.
novmuserai / HK July 2022 - Feb 2023
Sr.GenAI Engineer
- Directed the development of generative AI models aimed at enhancing user experience and optimizing performance.
- Collaborated with cross-functional teams to establish project requirements and deliver AI-driven solutions.
- Mentored junior engineers, promoting a culture of continuous learning and innovation.
- Implemented best practices for software development and deployment within AI projects.
- Conducted data analysis to enhance model accuracy and inform strategic decision-making.
Hockeyshare / UK Oct 2019 - Jan 2022
Sr FullStack Developer
- Built an end-to-end platform for AI-driven novel generation, leveraging state-of-the-art LLMs and NLP techniques to support content generation, style adaptation, and narrative coherence.
- Fine-tuned language models to align with domain-specific writing styles and target audience, achieving improved generation quality and controllability.
- Designed a robust and maintainable backend data pipeline using RabbitMQ for reliable asynchronous processing, scalable task queues, and fault tolerance.
- Implemented tool-calling and orchestration for LLMs, enabling seamless integration of external tools and data sources to augment generation capabilities.
- Strengthened AI security and governance, implementing security/compliance controls (access controls, auditing, data handling standards) tailored to GDPR compliance requirements.
- Conducted comprehensive data analysis and model evaluation to improve accuracy, reliability, and user-facing metrics; translated insights into strategic roadmaps and feature enhancements.
WhiteCloakTechnologies / PH April 2018 - April 2020
Frontend Developer
- Developed the Sky Contract Platform (Atlas) using React, Java Spring Boot, MySQL, and implemented JWT user authentication/authorization to establish a secure contract management system.
- Converted critical features from a legacy loan origination system built with ASP.NET Web Forms to a new web application powered by React, Redux, Typescript, and ASP.NET Core.
- Crafted and optimized RESTful APIs using Node.js, Express, Spring Boot, and ASP.NET Core,resulting in a remarkable 75% improvement in response, enhancing overall system performance and user experience
- Developed an email communication strategy, utilizing SendGrid to streamline and optimize our message delivery, ensuring efficient and reliable communication with stakeholders
Pixel8 / PH Nov 2015 - Mar 2018
React | React Native Developer
- Designed and implemented user-friendly, responsive web pages using React Native to facilitate seamless client onboarding, access to personalized financial planning resources, and real-time communication with financial experts, accommodating 500+ users effectively
- Expertly executed the migration of the project from JavaScript to TypeScript, upgrading from MUI v4 to MUI v5, and transitioning from react-relay to Apollo for GraphQL.
- Building BRIDGEs to use the GroundSDK (developed with Swift) in React Native, which enabled seamless integration and improved overall performance.
- Utilized Apollo GraphQL pub-sub system for the application to receive vehicle telemetry messages at a frequency of 0.5 second, and publish/subscribe events between vehicle and backend services.
- Optimized Openlayers map rendering performance by reducing memory usage with React hooks, which decreased map re-rendering time from 140ms to 20ms and enabled the application to connect from only 5 vehicles to up to 50 vehicles simultaneously
My Education
Mapua University (Manila, Philippines)
2011-2015
Bachelor's degree in Computer Science
Bachelor's degree in Computer Science Owing to advancements in product other designer technologies aute voluptate.
Featured Projects
What People Say
He's talented. I got much better results than I expected. I'll be working with him for the long term.
John, who is a seasoned full stack developer. I love his job.
John, who is a seasoned full stack developer. I love his job.
Matteo
CEO @ usehana
He always goes above and beyond.
John, who is a outlier developer.
John, who is a outlier developer.
Vincent
CEO @ novis.ai
John is awesome to work with. He is a great lead on any project, he is a team player and brings a ton of experience to the table. I can't recommend him enough. He is a value add in every aspect.
Max
CTO @ Oneclick
I had the pleasure of working closely with John on several projects, and I can confidently say that he is an exceptional lead developer. John brings a unique blend of technical expertise, creativity, and leadership to the table, making him an invaluable asset to any team. One of the things I appreciate most about John is his collaborative approach. He fosters a positive and inclusive team environment, where ideas are shared, and everyone feels empowered to contribute. Even in challenging situations, John remains calm and focused, leading the team with a solutions-oriented mindset. Any team or company would greatly benefit having him on board.