Open to opportunities

Nicholas Rojo

@nicholasrojo

Message

I build cloud-native full-stack and AI products that improve business workflows.

United States

Message

What I'm looking for

I'm looking for a Senior Full-Stack Engineer or AI Engineer role where I can lead technical initiatives, solve complex engineering challenges, and deliver reliable AI-powered products that create measurable business value.

I built Vantor's cloud-native procurement automation platform, cutting purchase processing time by 57% for more than 150 enterprise customers. I also delivered AI-assisted procurement features that reduced document review time by 65%.

Across Vantor, Infinity Bio, and Bloomfire, I've built scalable web platforms, backend APIs, analytics dashboards, knowledge-management features, and enterprise integrations. My work has improved API response times, application performance, release speed, reliability, and workflow automation.

I work across React, Next.js, TypeScript, Node.js, Python, Ruby on Rails, .NET, AWS, Azure, PostgreSQL, MongoDB, Docker, and Kubernetes. Recently, I've focused on practical AI applications using OpenAI, LangChain, RAG, vector databases, and LLM integrations.

I enjoy leading architecture, mentoring developers, collaborating closely with product and design teams, and turning complex engineering problems into reliable products with measurable business value.

Experience

Work history, roles, and key accomplishments

Full Stack Engineer

Vantor

Nov 2023 - May 2026 (2 years 6 months)

Architected and delivered a cloud-native procurement automation platform using React/Next.js, TypeScript, Node.js, NestJS, Ruby on Rails, PostgreSQL, Redis, AWS, Docker, Kubernetes, and Terraform, reducing purchase processing time by 57% while supporting more than 150 enterprise customers. Designed scalable microservices and event-driven workflows with Node.js, Kafka, GraphQL, REST APIs, PostgreSQ

Full Stack / AI Developer

Infinity Bio, Inc

Jul 2021 - Jul 2023 (2 years)

Developed laboratory data platforms from scratch using React, TypeScript, Python, Django, FastAPI, PostgreSQL, AWS, and Docker, enabling researchers to process biological datasets 45% faster. Built scalable backend APIs with Python, FastAPI, GraphQL, PostgreSQL, Celery, Redis, and AWS ECS, improving system throughput by 38% while supporting rapid startup growth.

React TypeScript Python Django fastAPI PostgreSQL AWS Docker GraphQL Celery Redis AWS ECS Material UI REST APIs Faiss RAG GitHub Actions Pytest Jest CI CD Agile

Web/AI Specialist | API Integration

Bloomfire

Feb 2019 - May 2021 (2 years 3 months)

Built knowledge management features using React, JavaScript, TypeScript, Node.js, Express, REST APIs, GraphQL, and MongoDB, improving content discovery speed by 35%. Integrated third-party enterprise platforms including Salesforce, Slack, Microsoft Teams, Google Workspace, Stripe, and REST APIs, reducing manual operational tasks by 40%.

React JavaScript TypeScript Node Express REST APIs GraphQL MongoDB Salesforce Slack Microsoft Teams Google Workspace Stripe React Hooks Redux Webpack Lazy Loading Redis Docker Jenkins AWS Unit Testing Monitoring

Web & Mobile App Developer | Intern

SmartLogic

Mar 2018 - Nov 2018 (8 months)

Developed responsive web and mobile applications using React, React Native, JavaScript, Node.js, Express, PostgreSQL, and REST APIs, delivering client projects on schedule with consistently positive feedback. Built reusable frontend components and backend services with Redux, Bootstrap, Node.js, Express, PostgreSQL, Git, and Docker, reducing development effort by 25% across multiple projects.