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I'm Ruan Pedro Mendes, a software engineer specialized in building scalable RESTful APIs and backend systems. I have strong experience with AWS, CI/CD, automated deploy pipelines, clean architecture, SOLID, and design patterns. I'm proficient with MVC, TDD, DDD, and microservices, having contributed to projects in startups, mid-sized companies, and large organizations. I also have solid skills in database management, technical documentation, requirements analysis, and agile methodologies like Scrum. I enjoy turning complex requirements into robust, maintainable software and collaborating with product and design teams to deliver value.…I'm Ruan Pedro Mendes, a software engineer specialized in building scalable RESTful APIs and backend systems. I have strong experience with AWS, CI/CD, automated deploy pipelines, clean architecture, SOLID, and design patterns. I'm proficient with MVC, TDD, DDD, and microservices, having contributed to projects in startups, mid-sized companies, and large organizations. I also have solid skills in database management, technical documentation, requirements analysis, and agile methodologies like Scrum. I enjoy turning complex requirements into robust, maintainable software and collaborating with product and design teams to deliver value.

Ruan Pedro Mendes

Full Stack Developer, Developer, Programmer, +5

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I'm Ruan Pedro Mendes, a software engineer specialized in building scalable RESTful APIs and backend systems. I have strong experience with AWS, CI/CD, automated deploy pipelines, clean architecture, SOLID, and design patterns. I'm proficient with MVC, TDD, DDD, and microservices, having contributed to projects in startups, mid-sized companies, and large organizations. I also have solid skills in database management, technical documentation, requirements analysis, and agile methodologies like Scrum. I enjoy turning complex requirements into robust, maintainable software and collaborating with product and design teams to deliver value.…I'm Ruan Pedro Mendes, a software engineer specialized in building scalable RESTful APIs and backend systems. I have strong experience with AWS, CI/CD, automated deploy pipelines, clean architecture, SOLID, and design patterns. I'm proficient with MVC, TDD, DDD, and microservices, having contributed to projects in startups, mid-sized companies, and large organizations. I also have solid skills in database management, technical documentation, requirements analysis, and agile methodologies like Scrum. I enjoy turning complex requirements into robust, maintainable software and collaborating with product and design teams to deliver value.

Available to hire

I’m Ruan Pedro Mendes, a software engineer specialized in building scalable RESTful APIs and backend systems. I have strong experience with AWS, CI/CD, automated deploy pipelines, clean architecture, SOLID, and design patterns. I’m proficient with MVC, TDD, DDD, and microservices, having contributed to projects in startups, mid-sized companies, and large organizations.

I also have solid skills in database management, technical documentation, requirements analysis, and agile methodologies like Scrum. I enjoy turning complex requirements into robust, maintainable software and collaborating with product and design teams to deliver value.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Language

Portuguese

Fluent

English

Advanced

Work Experience

Systems Analyst at CI&T

January 1, 2024 - Present

Working on developing high-security systems that dealt with sensitive financial and banking data. Played a key role in designing and implementing strong software processes, including creating and maintaining technical documentation and process diagrams. Analyses, documentation, and diagrams helped the team grasp system flows better and were useful when presenting project updates and architecture to stakeholders.

Fullstack Developer at Quality Delivery

March 1, 2025 - July 10, 2025

Full system development from front end to back end, focusing on internal process optimization. Involved in data analysis and MySQL database management, including writing SQL scripts. Analyzed requirements, implemented tests, and provided user support. Introduced code improvements such as caching and pagination strategies, cutting machine usage by 30%.

Fullstack Developer at Callfex

June 1, 2023 - July 10, 2025

Worked on the complete development of features for CRMs and multichannel platforms, handling frontend, backend, and database. Enhanced database performance by fine-tuning business logic and improving query efficiency in several projects.

Systems Analyst at CI&T

March 1, 2025 - Present

Developing high-security systems handling sensitive financial and banking data. Creating and maintaining technical documentation and process diagrams. Supporting architectural decisions and project updates for stakeholders.

Fullstack Developer at Quality Delivery

March 1, 2025 - July 10, 2025

Full system development focused on internal process optimization. Managed MySQL, including writing SQL scripts. Implemented caching and pagination strategies, reducing machine usage by 30%.

Fullstack Developer at Esplane

January 1, 2024 - July 10, 2025

Systems analysis and development, as well as process modeling in technology and other business areas. Created and implemented new projects and maintained existing systems. Optimized deployment workflow and coding standards, enabling faster and more reliable deliveries.

Fullstack Developer at Callflex

June 1, 2023 - July 10, 2025

Developed CRM and multichannel platform features from frontend to backend. Enhanced database performance through business logic optimization and query tuning.

Fullstack Developer at Hausz Startup

November 1, 2021 - July 10, 2025

Designed and implemented end-to-end solutions for CRM platforms and landing pages, with full-stack development and SQL scripting. Responsible for refactoring the CRM project’s frontend to enhance rendering performance and streamline data fetching from the backend.

Systems Analyst at CI&T

March 1, 2025 - Present

Fullstack Developer at Quality Delivery

March 1, 2025 - July 10, 2025

Full system development focused on internal process optimization. Managed MySQL databases including writing SQL scripts. Implemented caching and pagination strategies, reducing machine usage by 30%.

Fullstack Developer at Esplane

January 1, 2024 - July 10, 2025

Performed systems analysis and development, along with process modeling in technology and business areas. Created and implemented new projects and maintained existing systems. Optimized deployment workflow and coding standards for faster and more reliable deliveries.

Fullstack Developer at Callflex

June 30, 2023 - July 10, 2025

Developed CRM and multichannel platform features from frontend to backend. Enhanced database performance through business logic optimization and query tuning.

Fullstack Developer at Hausz Startup

November 30, 2021 - July 10, 2025

Designed and implemented end-to-end solutions for CRM platforms and landing pages, including full-stack development and SQL scripting. Refactored the CRM project's frontend to improve rendering performance and streamline data fetching from the backend.

Systems Analyst at CI&T

March 1, 2025 - Present

Developed highly secure systems handling sensitive financial and banking data. Created and maintained technical documentation and process diagrams. Supported architectural decisions and communicated with stakeholders. Developed high-performance Spring Boot microservices securing banking data with OAuth 2.0 and JWT authentication. Applied prompt engineering techniques to automate development-related tasks. Participated in daily meetings, professional discussions, and project planning in English.

Fullstack Developer at Quality Delivery

March 1, 2025 - July 21, 2025

Led full system development focused on internal process optimization. Managed MySQL databases and wrote complex SQL scripts. Implemented caching and pagination strategies, reducing server load by 30%.

Fullstack Developer at Esplane

January 1, 2024 - July 21, 2025

Conducted systems analysis, process modeling, and ongoing system maintenance. Optimized deployment workflows and coding standards.

Fullstack Developer at Callflex

June 30, 2023 - July 21, 2025

Developed CRM and multichannel platform features covering frontend and backend. Improved database performance through business logic and query optimization.

Fullstack Developer at Hausz Startup

November 1, 2021 - July 21, 2025

Designed and developed end-to-end CRM and landing page solutions. Refactored frontend components to improve rendering speed and data handling.

Software Engineer at CI&T

March 1, 2025 - Present

Engineered high-performance microservices for critical banking operations using Spring Boot, implementing OAuth 2.0 and JWT to ensure bank-grade security. Architected scalable backend solutions, directly influencing technical decisions and collaborating with stakeholders. Automated development workflows by applying advanced Prompt Engineering techniques, significantly reducing repetitive coding tasks. Spearheaded the creation of technical documentation and architectural diagrams to ensure long-term system maintainability.

Software Engineer at Quality Delivery

January 1, 2024 - March 31, 2025

Optimized core internal systems by implementing Redis caching and advanced pagination strategies, reducing server load by 30%. Managed complex MySQL database structures, writing high-efficiency SQL scripts to support data-intensive operations. Developed full-cycle features for internal process optimization, ensuring high availability and reliability.

Software Engineer at Esplane

August 1, 2023 - January 31, 2024

Modernized deployment workflows and enforced strict coding standards, improving Continuous Integration (CI) processes. Led system analysis and process modeling initiatives to streamline business operations and enhance system scalability.

Software Engineer at Callflex

November 1, 2021 - June 30, 2023

Enhanced CRM and multichannel platform capabilities, delivering robust features for both frontend and backend. Boosted database performance by refactoring business logic and optimizing SQL queries for faster data retrieval.

Software Engineer at Hausz Startup

January 1, 2021 - November 30, 2021

Designed and launched end-to-end CRM solutions and high-conversion landing pages. Refactored legacy frontend codebases to improve rendering speed and user experience (UX).