Cristian – React, Python, AWS

It's a procurement platform that controls how companies source building systems for the U.S. commercial construction industry.

• Designed and implemented end-to-end features using React, TypeScript, and Node.js, delivering intuitive UIs and robust back-end services;
• Developed the back-end architecture with Nest.js, from a monolithic codebase to a set of microservices and independent background workers for asynchronous task processing;
• Built intelligence modules in Python and integrated Gemini to process and transform unstructured data into actionable insights;
• Leveraged AWS (Lambda, S3, RDS, ECS, ECR, CloudWatch) to deploy and manage cloud infrastructure, streamlining deployments and monitoring.
• Collaborated with leadership, product, and design teams to translate complex business requirements into technical solutions that automate the load-tendering workflow;
• Owned projects from concept through delivery in a remote, fast-paced environment, while establishing best practices.

It's an AI-driven company that focuses on marketing solutions, providing seamless content generation to both large and small companies, powered by AI.

• Developed front-end components with React, enhancing user experience with real-time content creation and interactive interfaces;
• Integrated LLMs into web applications, enabling dynamic text generation, content creation, designs, ads, and AI-driven personalized responses;
• Designed and optimized back-end services using Python, Django, and FastAPI for seamless communication between interfaces and AI models;
• Implemented WebSockets for real-time interactions and live updates, improving responsiveness and engagement;
• Leveraged AWS services for cloud infrastructure management, ensuring scalability and performance optimization;
• Managed background jobs with Celery and SQS, ensuring efficient asynchronous task processing and workload distribution.

It's an enterprise application that monitors policy adherence and surfaces real-time security metrics through dashboards, powered by voice and video usage insights.

• Developed the new compliance insights dashboard using React and the company's design system (Paste);
• Contributed to the development of "Wise Owl" for the Voice & Video Insights products, an AI technology integrated into customers' consoles to provide enhanced insights based on user queries;
• Built and maintained Java and Spring Boot, as well as Golang microservices, interacting with Elasticsearch clusters containing millions of logs to generate insights;
• Developed Node.js and Nest.js backend-for-frontend applications to support communication between user interfaces and the company's downstream microservices;
• Managed AWS infrastructure, Kubernetes clusters, and EC2 instances, utilizing the company's CI/CD system Admiral for deployment and operations;
• Collaborated cross-functionally with teams to ensure cohesive product development.

It's a US startup focused on improving treatment and outcomes for people with substance use disorders.

• Participated in code writing, new feature development, maintenance, and technical decision guidance in an agile, cross-functional team along with designers and product managers;
• Developed internal tools to support customer support, marketing, operations, and scheduling — including payment processing and reward delivery to members in active treatment via various vendors.
• Contributed to front-end and mobile development using React and React Native.
• Participated in back-end development with Python and Django, and worked on improving CI/CD pipelines using CircleCI and GitHub Actions.
• Implemented Google Chrome scripts and extensions to facilitate system integration with external vendors and their tools;
• Ensured HIPAA-compliant deployments while maintaining and improving test coverage - exceeding minimums in mobile apps and keeping internal frontend coverage above 60%.

It's a ride-hailing mobile app that is exploring launching an electromobility vertical through a fleet-based operational model.

• Developed new microservices written in Golang with a CLEAN architecture, over a Docker and Kubernetes infrastructure, with sync (REST APIs) and async (Kafka) communication;
• Supported PHP monolith maintenance and contributed to its migration to microservices;
• Implemented and improved CI/CD pipelines with Jenkins and GitHub actions.