Plesr Sebastian

I am a Senior Software Engineer with over 8 years of hands-on experience building scalable, user-focused web and mobile applications using modern front-end and back-end technologies. My core expertise lies in React, Next.js, Vue.js, Angular, Node.js, Express, NestJS, Django, Laravel, Python, PHP, TypeScript, JavaScript, and .NET—with a recent specialization in AI integration for production systems.

Throughout my career, I’ve architected and developed solutions across multiple industries including healthcare, SaaS, logistics, fintech, and travel tech. Whether building responsive dashboards, real-time data platforms, or intelligent automation features, I bring a deep understanding of the full development lifecycle—from wireframes to deployment and optimization.

I have led front-end development for cross-platform systems, turning complex UI/UX designs into high-performance interfaces using React, Vue, and Angular. I also excel at back-end architecture, REST/GraphQL APIs, and microservices, primarily using Node.js, NestJS, Laravel, and Django—all while ensuring seamless API communication and security best practices.

In recent years, I’ve been passionate about AI integration—embedding machine learning into web applications to support predictive analytics, personalization, and process automation. I’ve worked closely with data science teams to implement AI models into production via Python-based APIs, enhancing features like smart search, image classification, and user behavior tracking.

Beyond code, I believe in clean architecture, maintainable code, and collaborative development. I’m comfortable using tools like Figma, Trello, Notion, GitHub, and Slack to work efficiently in remote Agile teams. I also contribute to code reviews, mentor junior developers, and help shape best practices across teams.

I’ve deployed scalable, secure apps on AWS, Firebase, and GCP, using tools like Docker, CI/CD pipelines, and serverless architectures to ensure reliable performance under load. I’ve also worked with HIPAA-compliant systems and data-sensitive environments that require extra focus on privacy, authentication, and compliance.

In summary, I’m a proactive, adaptable, and detail-oriented engineer who thrives in fast-paced, impact-driven environments. I enjoy turning ideas into polished digital experiences and leveraging the power of AI to create smarter, more efficient solutions. Whether you're building a startup MVP or scaling an enterprise platform, I bring the technical depth and cross-functional experience needed to help bring your vision to life.