Janik Daniel

• Engineered AI-powered SaaS platforms with Python, FastAPI, Django, React, Next.js, and TypeScript across backend, frontend, and product workflows. • Integrated OpenAI APIs and LLM-based capabilities for AI assistants, document processing, intelligent search, and workflow automation. • Architected scalable multi-tenant SaaS patterns covering authentication, authorization, subscription management, and payment integrations. • Implemented RESTful and GraphQL APIs plus third-party service integrations supporting complex business workflows. • Structured PostgreSQL, MongoDB, Redis, and cloud-based data solutions with attention to scalability and application performance. • Deployed production applications on AWS with Docker, Kubernetes, and CI/CD pipelines. • Improved reliability, security, scalability, and performance through architecture optimization and automated testing. • Collaborated with founders, product managers, designers, and engineering teams through the complete product lifecycle.

• Developed scalable web applications and SaaS products with Python, Django, Flask, FastAPI, React, Next.js, and TypeScript. • Delivered secure backend services, APIs, authentication systems, dashboards, and business management platforms. • Created responsive, SEO-friendly frontend applications with React and Next.js. • Optimized database schemas and query patterns across PostgreSQL, MySQL, MongoDB, and Redis. • Connected external APIs, payment gateways, authentication providers, and automation services into production workflows. • Introduced background jobs, caching, asynchronous processing, and real-time application features. • Containerized applications with Docker and supported cloud deployment and CI/CD automation. • Contributed to code reviews, technical planning, debugging, testing, and system architecture decisions.

• Delivered full-stack web applications for startups and growing businesses with Python, Django, Flask, React, Node.js, and Next.js. • Engineered RESTful APIs, database systems, administrative dashboards, customer portals, and internal business applications. • Established secure authentication, role-based permissions, data validation, and application security practices. • Structured scalable database architectures using PostgreSQL, MySQL, MongoDB, Firebase, and Redis. • Integrated third-party APIs, payment systems, notification services, and external business platforms. • Refactored legacy applications and migrated outdated components to modern frameworks and architectures. • Improved application performance through database optimization, caching, code refactoring, and frontend optimization. • Maintained reliable development and production workflows with Git, Docker, CI/CD, and cloud deployment practices.