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Emil User

@emiluser1

Senior Software Engineer at Cafeto Software who built a cybersecurity questionnaire product integrating AI with structured security data.

Colombia

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At Cafeto Software, I designed and built an enterprise product that integrates artificial intelligence with structured cybersecurity data, helping organizations manage security questionnaires. I developed its backend with Node.js (NestJS) and AWS Lambda, and implemented REST APIs integrated with GraphQL services.

At GrowthAcceleration Partners, I contributed to backend projects using Node.js and TypeScript while supporting frontend teams with React. I helped design microservices using AWS Lambda and Amazon API Gateway, and implemented CI/CD pipelines and automation scripts.

At MJV Technology & Innovation, I participated in system design and implementation as a Tech Lead, and led development of embedded applications using Flutter. Earlier, I developed cross-platform applications and backend services as a freelance developer, and worked on document management systems at Lexco S.A.

Experience

Work history, roles, and key accomplishments

Senior Software Engineer

Cafeto Software

Sep 2025 - Feb 2026 (5 months)

Designed and built an enterprise product integrating AI with structured cybersecurity data. Developed backend architecture using Node.js (NestJS) and AWS Lambda, implemented REST APIs and GraphQL integration, and applied testing and observability practices.

NodeJS NestJS AWS Lambda REST APIs GraphQL Unit Testing End To End Testing Observability Clean Architecture SOLID

Senior Software Engineer

GrowthAcceleration Partners

Jul 2023 - Feb 2025 (1 year 7 months)

Contributed to backend development with Node.js and TypeScript, supporting frontend teams with React. Developed REST APIs, designed microservices with AWS Lambda and API Gateway, implemented CI/CD pipelines, and introduced automation scripts.

NodeJS TypeScript React REST APIs AWS Lambda Amazon API Gateway CI CD Code Review Automation

Tech Lead

MJV Technology & Innovation

Jun 2021 - Jun 2023 (2 years)

Led design and implementation of systems, focusing on technology selection and operational analysis. Developed embedded applications with Flutter, used microservices with Docker and Kubernetes, and mentored junior developers.

Flutter Microservices Docker Kubernetes Clean Architecture SOLID Unit Testing Integration Testing Mentorship

Full Stack Developer

Freelance Software Development

Oct 2018 - Nov 2019 (1 year 1 month)

Designed and developed cross-platform applications using microservices architecture, focusing on REST APIs with Node.js and Python. Built scalable backend services with MongoDB and DynamoDB, and collaborated directly with clients.

NodeJS Python REST APIs MongoDB DynamoDB AWS Microservices Client Collaboration

IT System Analyst

Lexco S.A

Aug 2017 - Sep 2018 (1 year 1 month)

Analyzed, designed, and maintained document management applications using Java and Go. Developed backend components and microservices, and participated in designing modular services.

Java Go Microservices Clean Architecture System Maintenance

Front End Developer

Contact Service

Oct 2016 - Apr 2017 (6 months)

Designed and developed client-side web applications using JavaScript, focusing on real-time communication features. Implemented real-time service connections using RTC and P2P technologies, and optimized frontend performance.

JavaScript RTC P2P Frontend Development Performance Optimization