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I am a software engineer with deep expertise in Java-based backend technologies like Spring and Hibernate, along with strong front-end skills in Angular, React, and Vue.js. I've had the opportunity to build scalable, secure web applications, integrating AI and microservices architectures, and deploying them with modern DevOps practices. I enjoy working on end-to-end development, designing RESTful APIs, automating workflows with AI/ML models, and monitoring application performance. My experience spans fintech, government, and blockchain platforms, where I've improved system resilience, optimized trade algorithms, and enhanced user experience with responsive frontends. I'm passionate about creating robust software solutions that balance innovation and security.…I am a software engineer with deep expertise in Java-based backend technologies like Spring and Hibernate, along with strong front-end skills in Angular, React, and Vue.js. I've had the opportunity to build scalable, secure web applications, integrating AI and microservices architectures, and deploying them with modern DevOps practices. I enjoy working on end-to-end development, designing RESTful APIs, automating workflows with AI/ML models, and monitoring application performance. My experience spans fintech, government, and blockchain platforms, where I've improved system resilience, optimized trade algorithms, and enhanced user experience with responsive frontends. I'm passionate about creating robust software solutions that balance innovation and security.

Andrea Lin

Full Stack Developer, Cloud Developer, Web Developer, +4

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I am a software engineer with deep expertise in Java-based backend technologies like Spring and Hibernate, along with strong front-end skills in Angular, React, and Vue.js. I've had the opportunity to build scalable, secure web applications, integrating AI and microservices architectures, and deploying them with modern DevOps practices. I enjoy working on end-to-end development, designing RESTful APIs, automating workflows with AI/ML models, and monitoring application performance. My experience spans fintech, government, and blockchain platforms, where I've improved system resilience, optimized trade algorithms, and enhanced user experience with responsive frontends. I'm passionate about creating robust software solutions that balance innovation and security.…I am a software engineer with deep expertise in Java-based backend technologies like Spring and Hibernate, along with strong front-end skills in Angular, React, and Vue.js. I've had the opportunity to build scalable, secure web applications, integrating AI and microservices architectures, and deploying them with modern DevOps practices. I enjoy working on end-to-end development, designing RESTful APIs, automating workflows with AI/ML models, and monitoring application performance. My experience spans fintech, government, and blockchain platforms, where I've improved system resilience, optimized trade algorithms, and enhanced user experience with responsive frontends. I'm passionate about creating robust software solutions that balance innovation and security.

Available to hire

I am a software engineer with deep expertise in Java-based backend technologies like Spring and Hibernate, along with strong front-end skills in Angular, React, and Vue.js. I’ve had the opportunity to build scalable, secure web applications, integrating AI and microservices architectures, and deploying them with modern DevOps practices.

I enjoy working on end-to-end development, designing RESTful APIs, automating workflows with AI/ML models, and monitoring application performance. My experience spans fintech, government, and blockchain platforms, where I’ve improved system resilience, optimized trade algorithms, and enhanced user experience with responsive frontends. I’m passionate about creating robust software solutions that balance innovation and security.

Skills

Experience Level

Expert

Expert

Expert

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Expert

Expert

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Expert

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Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Language

English

Advanced

Polish

Intermediate

Bashkir

Intermediate

Javanese

Advanced

Work Experience

Software Engineer at Visa

August 1, 2024 - Present

Worked on modern AI-enhanced financial web applications using React and Next.js, building scalable interfaces and modular features. Used micro-frontends to separate system domains like payments, reports, onboarding, and AI-driven analytics. Focused on performance, clean design, secure API integration, and ethical AI integration. Built scalable and modular financial dashboards with React 18 and Next.js 14, integrating real-time trading data, AI-powered insights, and secure user authentication via NextAuth.js and OAuth2.0. Architected and implemented a micro-frontend system using Module Federation and Webpack 5, enabling independent deployment of billing, reporting, onboarding, and AI recommendation modules across teams. Integrated AI/ML-powered analytics pipelines, including embedding large language model (LLM) outputs into dashboards to generate personalized portfolio insights, risk assessments, and user prompts. Leveraged React Query and TanStack Router to manage asynchronous state, c

React FullStack Developer at Radzen

December 31, 2020 - July 10, 2025

Developed and maintained several high-traffic e-commercial, healthcare SaaS platforms using Angular for the frontend, Node.js and MongoDB, achieving 99.9% uptime. Integrated third-party services such as payment gateways, enhancing the e-commerce transaction process and utilizing technical skills to implement accounting functionalities and ensure financial accuracy. Conducted analytical code review and unit testing using Jest and Vitest to maintain high code quality, application stability, and performance optimization. Skilled in creating responsive and accessible web interfaces using Angular Material, ensuring seamless usability across various devices and accessibility standards. Utilized Google Cloud services to achieve low-latency performance in our distributed system architecture. Used Vue to build web apps for text editing, email campaigns, management, and video conferencing. By using Laravel, created robust backend and worked with PHPunit. Applied agile methodology to ensure effic

Backend Developer at ZeroHash

August 31, 2019 - July 10, 2025

As a backend developer, contributed to many projects in several industries such as Healthcare, Fintech, Educational, Ecommerce. Improved database performance by optimizing queries and indexing resulting in a 20% reduction in query time. Implemented Linux server administration and configuration resulting in a 30% reduction in server downtime. Collaborated with UX designers to develop responsive design resulting in a 25% improvement in mobile experience. Migrated legacy codebase to modern PHP standards resulting in a 40% improvement in code maintainability. Managed AWS infrastructure and deployment resulting in a 50% reduction in deployment time.

Software Engineer at VISA

June 30, 2025 - July 28, 2025

Developed modern AI-enhanced financial web applications using React 18, Next.js 14, and TypeScript, delivering scalable, modular, and performance-focused interfaces. Architected and implemented a micro-frontend system using Webpack 5 Module Federation, enabling independent deployment of payment, reporting, onboarding, and AI-driven analytics modules. Built real-time financial dashboards integrating trading data streams, AI-powered portfolio insights, and secure user authentication with NextAuth.js, OAuth 2.0, and Zod validations. Integrated AI/ML pipelines and LLM outputs for personalized portfolio recommendations, risk assessments, and real-time prompts, ensuring explainable AI integration with compliance guardrails. Leveraged React Query and TanStack Router for state management, caching, and navigation, significantly reducing API response latency for live market updates and AI-driven insights. Developed high-performance UI components with Tailwind CSS, Framer Motion, and ShadCN UI, m

Full Stack Developer at PLAVNO

July 31, 2024 - July 28, 2025

Contributed to the development of dynamic, high-performance web applications in fintech industry using React18 reducing the development period by 20% compared to previous. Spearheaded the adoption of Vite for building projects, significantly enhancing development workflow with fast refresh capabilities. Created robust server-side solutions with Node.js and Express, integrating RESTful and GraphQL APIs. Innovated in state management using Redux Toolkit and Zustand, ensuring scalable and maintainable code. Set up comprehensive QA testing frameworks using Vitest and React Testing Library, maintaining high-quality code standards. Utilized advanced language models like ChatGPT and LangChain from OpenAI to develop a personalized chatbot system, adding machine learning, AI, and data analysis, which increased sales rate by 25%. Contributed to mobile development projects using React Native, prototyping a cancer-treatment guide app increasing user engagement by 15%. Developed collaborative mobil

Frontend Developer at RADZEN

December 31, 2020 - July 28, 2025

Created robust and scalable Blockchain SaaS platforms, DApps, DAO integrating many functions. Integrated React for frontend development resulting in 40% improvement in user experience. Managed a team of 5 developers and provided technical guidance resulting in 30% increase in project completion rate. Improved application security by implementing best practices and performing regular security audits resulting in zero security breaches. Designed and implemented scalable architecture for the platform resulting in a 100% increase in user base. Created automated testing and deployment processes resulting in 70% reduction in deployment time. Maintained high server uptime and monitored performance ensuring 99.9% availability rate.

Web Developer at ZEROHASH

August 31, 2019 - July 28, 2025

As a backend developer, contributed to projects across healthcare, fintech, educational, and ecommerce industries. Improved database performance by optimizing queries and indexing, reducing query times by 20%. Implemented Linux server administration and configuration, reducing server downtime by 30%. Collaborated with UX designers on responsive design improving mobile experience by 25%. Migrated legacy codebase to modern PHP standards, improving code maintainability by 40%. Managed AWS infrastructure and deployment leading to 50% reduction in deployment time.

Software Engineer at VISA

June 30, 2025 - July 31, 2025

Developed a modular microservices architecture using Spring Boot 3, Spring Cloud, and Spring Security for scalable benefit application workflows and AI-powered eligibility assessments. Integrated AI/ML models via REST and gRPC for document classification, fraud detection, and eligibility scoring. Implemented OAuth2 and OpenID Connect authentication with Keycloak to support SSO and fine-grained authorization. Designed RESTful APIs consumed by Angular frontends and third-party systems. Utilized Oracle Database with Spring Data JPA and Flyway for efficient data modeling and migrations. Developed asynchronous services with RabbitMQ and event-driven architecture. Ensured robust automated testing and containerized services with Docker and CI/CD pipelines. Applied monitoring tools like Micrometer and Prometheus with Grafana dashboards and followed modern software engineering best practices.

Full Stack Developer at PLAVNO

July 31, 2024 - July 31, 2025

Engineered fintech and e-commerce platforms using Java and Spring framework backend integrated with Hibernate ORM, enhancing online sales by 30%. Developed and deployed scalable microservices using Spring Cloud and containerized with Docker. Integrated AWS Lambda and ECS services to optimize resource usage under DevOps practices. Built responsive Angular interfaces using RxJS. Created a personalized chatbot using ChatGPT and LangChain, increasing sales conversion rates by 25%. Implemented RESTful APIs and Kafka for real-time distributed communication. Practiced Test-Driven Development and performance tuned Java pricing algorithms. Used Prometheus for monitoring integrated services and pipelines.

Java Developer at RADZEN

December 31, 2020 - July 31, 2025

Created robust and scalable Blockchain SaaS platforms including DApps and DAOs. Integrated ReactJS for frontend improving user experience by 40%. Managed a team of 5 developers, boosting project completion rate by 30%. Improved application security with best practices and audits resulting in zero breaches. Designed scalable architectures doubling user base. Automated testing and deployment reducing deployment time by 70%. Maintained high server uptime and monitored performance achieving 99.9% availability.

Web Developer at ZEROHASH

August 31, 2019 - July 31, 2025

Contributed backend development for projects in Healthcare, Fintech, Educational, and Ecommerce sectors. Optimized database queries and indexing, reducing query time by 20%. Administered Linux servers, reducing downtime by 30%. Collaborated on responsive UX designs improving mobile experience by 25%. Migrated legacy codebases to modern PHP standards increasing maintainability by 40%. Managed AWS infrastructure and deployment reducing deployment time by 50%.