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I'm a full-stack senior software engineer with over 5 years of experience specializing in both front-end and back-end development. I enjoy collaborating with multinational teams and clients to create scalable, high-performance solutions. My expertise lies mainly in JavaScript technologies such as React on the front end, Node.js on the back end, and PostgreSQL for databases. I take pride in optimizing processes—I've improved data processing efficiency by 96%, automated workflows to cut manual tasks by 75%, and built API integrations that greatly reduce latency and redundant calls. I'm passionate about continuous learning and eager to tackle new challenges using the latest cutting-edge technologies.…I'm a full-stack senior software engineer with over 5 years of experience specializing in both front-end and back-end development. I enjoy collaborating with multinational teams and clients to create scalable, high-performance solutions. My expertise lies mainly in JavaScript technologies such as React on the front end, Node.js on the back end, and PostgreSQL for databases. I take pride in optimizing processes—I've improved data processing efficiency by 96%, automated workflows to cut manual tasks by 75%, and built API integrations that greatly reduce latency and redundant calls. I'm passionate about continuous learning and eager to tackle new challenges using the latest cutting-edge technologies.

Vinicius Marfil Afonso

Full Stack Developer, Developer, Programmer, +2

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I'm a full-stack senior software engineer with over 5 years of experience specializing in both front-end and back-end development. I enjoy collaborating with multinational teams and clients to create scalable, high-performance solutions. My expertise lies mainly in JavaScript technologies such as React on the front end, Node.js on the back end, and PostgreSQL for databases. I take pride in optimizing processes—I've improved data processing efficiency by 96%, automated workflows to cut manual tasks by 75%, and built API integrations that greatly reduce latency and redundant calls. I'm passionate about continuous learning and eager to tackle new challenges using the latest cutting-edge technologies.…I'm a full-stack senior software engineer with over 5 years of experience specializing in both front-end and back-end development. I enjoy collaborating with multinational teams and clients to create scalable, high-performance solutions. My expertise lies mainly in JavaScript technologies such as React on the front end, Node.js on the back end, and PostgreSQL for databases. I take pride in optimizing processes—I've improved data processing efficiency by 96%, automated workflows to cut manual tasks by 75%, and built API integrations that greatly reduce latency and redundant calls. I'm passionate about continuous learning and eager to tackle new challenges using the latest cutting-edge technologies.

Available to hire

I’m a full-stack senior software engineer with over 5 years of experience specializing in both front-end and back-end development. I enjoy collaborating with multinational teams and clients to create scalable, high-performance solutions. My expertise lies mainly in JavaScript technologies such as React on the front end, Node.js on the back end, and PostgreSQL for databases.

I take pride in optimizing processes—I’ve improved data processing efficiency by 96%, automated workflows to cut manual tasks by 75%, and built API integrations that greatly reduce latency and redundant calls. I’m passionate about continuous learning and eager to tackle new challenges using the latest cutting-edge technologies.

Skills

Experience Level

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Language

English

Advanced

Portuguese

Fluent

Spanish; Castilian

Intermediate

Work Experience

Full-Stack Software Engineer JavaScript and C# at Praxi Solutions, Inc.

November 1, 2019 - June 20, 2024

Developed and customized full-stack solutions using Domain-Driven Design for modules in Creatio CRM targeting headhunting firms and banking institutions. Built custom C# server-side handlers and JavaScript client-side scripts to enforce complex business rules, automate workflows, and maintain data integrity. Achieved a 75% reduction in routine tasks and cleaned over 50% of legacy data inconsistencies. Designed dynamic dashboards with SQL showing real-time KPIs and optimized batch processing to reduce times from 8 hours to 20 minutes. Integrated Creatio CRM with various banking databases and e-signature platforms using secure RESTful APIs, significantly reducing API calls by 80% and data latency to under a minute. Enhanced UI/UX by integrating custom CSS and JavaScript to improve accessibility and usability.

Back Office Analyst at Global Hitss, Subcontractor for Bayer Brazil

April 1, 2019 - November 1, 2019

Designed and implemented VBA scripts to automate daily Excel reports, boosting team productivity by 20% and saving 2 hours daily per analyst. Provided bilingual technical support and mentored a four-person team troubleshooting Bayer’s mobile software for Brazilian and German users. Created and managed a centralized knowledge base with SOPs and VBA libraries, reducing new hire onboarding time by 33%.