Full-Stack Developer, Frontend Engineer, Backend Developer, React.js Developer, Node.js Developer, Web3 Developer, Technical Lead, API Engineer, DevOps Contributor, UI/UX Collaborator

Aron Symanski

Full-Stack Developer, Frontend Engineer, Backend Developer, React.js Developer, Node.js Developer, Web3 Developer, Technical Lead, API Engineer, DevOps Contributor, UI/UX Collaborator

Available to hire

Full-Stack Developer, Frontend Engineer, Backend Developer, React.js Developer, Node.js Developer, Web3 Developer, Technical Lead, API Engineer, DevOps Contributor, UI/UX Collaborator

Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
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Language

English
Advanced

Work Experience

Sr. Full Stack Developer at Knowit
August 1, 2025 - August 1, 2025
Architected and developed a scalable, microservices-based delivery platform using React, Next.js, and FastAPI, focusing on maintainability and performance. Led backend microservices for orders, payments, and refunds; built real-time order processing pipelines using Kafka; optimized MySQL schemas; integrated OpenAI, LangChain, and Google Vertex AI for chat, voice assistant, and sentiment analysis; designed WebSocket-based live order tracking; improved concurrency with pgvector and Redis caching; integrated Stripe and PayPal for multi-currency payments; automated deployments with Docker, Kubernetes (EKS/Fargate), and Terraform; built analytics dashboards with Grafana, Metabase, and Google Data Studio.
Senior Full Stack Developer at Knowit
August 1, 2025 - August 1, 2025
Architected and developed a scalable, microservices-based delivery platform using React, Next.js, and FastAPI; led backend microservices for orders, payments, and refunds; built real-time order processing pipelines using Kafka; optimized MySQL databases and schemas; integrated OpenAI, LangChain, and Google Vertex AI to enable LLM-based chat, voice assistant, and review sentiment analysis; designed WebSocket-based live order tracking; optimized performance with pgvector and Redis; integrated Stripe and PayPal payments; automated deployments with Docker, Kubernetes (EKS/Fargate), and Terraform; built analytics dashboards enabling data-driven decisions.
Full Stack Developer at Dreamix
October 1, 2023 - October 1, 2023
Developed a high-performance fintech app using React, TypeScript, Tailwind CSS, Redux-Saga, Zustand, Django, and MongoDB. Created 50+ reusable HOC components and implemented styled-components and React hooks, improving speed and maintainability. Collaborated on multiple full-stack projects using Python, Node.js, React and mobile platforms. Practiced TDD (Jest, Pytest, Mocha, Cypress) to ensure reliability. Automated CI/CD pipelines with GitHub Actions and Jenkins, reducing deployment time.
Full Stack Developer at Lexis Solutions
March 1, 2020 - March 1, 2020
Developed a healthcare web app using React.js and Django; designed scalable backend architecture handling 5K+ daily API requests with Django REST Framework; implemented secure authentication (JWT, OAuth 2.0, RBAC) ensuring HIPAA compliance; built real-time telemedicine and appointment booking using WebSockets; applied SEO and accessibility optimizations to boost engagement.
Full Stack Developer at SENLA
October 1, 2018 - October 1, 2018
Developed an EdTech learning management platform using React and Flask; integrated Flagsmith, Twilio, Stripe, and Google Analytics for feature flexibility and data insights; collaborated in an Agile 10-member team; improved system stability and UX, increasing weekly active users and NPS.
Web Developer at WeSoftYou Inc
July 1, 2017 - July 1, 2017
Developed an HR management platform using React.js and TypeScript; optimized frontend components with code splitting and lazy loading to reduce load times; built REST API endpoints for React-based frontends and integrations with CRM and payment platforms; tuned database queries and API responses to improve backend performance.
Junior Web Developer at DevIT
March 1, 2016 - March 1, 2016
Participated in frontend development and testing using HTML, CSS, and Bootstrap; assisted in building frontend components with JavaScript and jQuery; maintained responsive UI across devices.

Education

Bachelor's Degree at Tokyo University of Technology
January 1, 2010 - January 1, 2015
Bachelor's Degree at Tokyo University of Technology
January 1, 2010 - January 1, 2015
Bachelor's Degree at Tokyo University of Technology
January 1, 2010 - January 1, 2015

Qualifications

Add your qualifications or awards here.

Industry Experience

Software & Internet, Healthcare, Education, Financial Services, Retail