Martin Belcic

Frontend

• Built and maintained multiple Next.js / React / TypeScript applications (admin dashboards and public end-user portals) using TanStack React Query, react-hook-form and styled-components.
• Led the migration of legacy AngularJS applications to Next.js.
• Developed data visualizations with D3.

Form.io Platform

• Top contributor to an in-house Form.io renderer/builder fork: built custom components (QR/barcode scanning, rating/scoring, image capture, custom selectors) and an S3 storage plugin.
• Maintained a shared AngularJS component library.

Backend

• Designed and maintained Node.js / Express REST APIs backed by PostgreSQL (Sequelize) and Redis.
• Architected an asynchronous PDF-generation and image-processing pipeline (Puppeteer, Sharp, pdf-lib) driven by AWS SQS.
• Built event-driven services producing/consuming Kafka topics for submissions, notifications and service events.

AI / LLM

• Primary developer of an LLM-powered file-audit pipeline using Amazon Bedrock (Claude) — Kafka-triggered, S3 file staging, and a PostgreSQL job-state machine for analysis.
• Integrated AWS SageMaker endpoints for form-field estimation.

AWS & DevOps

• Hands-on with S3, SQS, SNS, ECS/Fargate, AppConfig, Secrets Manager, SageMaker, Bedrock, CloudWatch.
• Defined infrastructure as code with AWS CDK; containerized services with Docker and automated CI/CD with CircleCI.

• Web application development in React.js and Angular.
• Code management with Git. HTML and CSS.

• Developed a real-time web temperature monitor: Python server on a LinkIt Smart 7688 (OpenWRT), frontend with HTML/CSS/jQuery and Chart.js.
• Implemented MQTT protocol for real-time device communication.