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I am a Senior Software Engineer with 20 years of full-stack development experience spanning desktop, web, and mobile platforms. Over my career, I've co-founded startups and specialized in automation, CI/CD, and scalable cloud solutions utilizing AWS, Azure, and GCP. My skill set includes proficiency in Java, C#, JavaScript frameworks, and both SQL and NoSQL databases. My experience ranges from leading complex projects involving architecture and delivery to modernizing legacy systems and implementing microservices. I enjoy working in high-performance environments, managing CI/CD pipelines, and developing scalable SaaS, PaaS, and serverless solutions across multiple cloud providers.…I am a Senior Software Engineer with 20 years of full-stack development experience spanning desktop, web, and mobile platforms. Over my career, I've co-founded startups and specialized in automation, CI/CD, and scalable cloud solutions utilizing AWS, Azure, and GCP. My skill set includes proficiency in Java, C#, JavaScript frameworks, and both SQL and NoSQL databases. My experience ranges from leading complex projects involving architecture and delivery to modernizing legacy systems and implementing microservices. I enjoy working in high-performance environments, managing CI/CD pipelines, and developing scalable SaaS, PaaS, and serverless solutions across multiple cloud providers.

Djair Roberto Gonçalves Da Costa

Full Stack Developer, Developer, Web Developer, +4

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I am a Senior Software Engineer with 20 years of full-stack development experience spanning desktop, web, and mobile platforms. Over my career, I've co-founded startups and specialized in automation, CI/CD, and scalable cloud solutions utilizing AWS, Azure, and GCP. My skill set includes proficiency in Java, C#, JavaScript frameworks, and both SQL and NoSQL databases. My experience ranges from leading complex projects involving architecture and delivery to modernizing legacy systems and implementing microservices. I enjoy working in high-performance environments, managing CI/CD pipelines, and developing scalable SaaS, PaaS, and serverless solutions across multiple cloud providers.…I am a Senior Software Engineer with 20 years of full-stack development experience spanning desktop, web, and mobile platforms. Over my career, I've co-founded startups and specialized in automation, CI/CD, and scalable cloud solutions utilizing AWS, Azure, and GCP. My skill set includes proficiency in Java, C#, JavaScript frameworks, and both SQL and NoSQL databases. My experience ranges from leading complex projects involving architecture and delivery to modernizing legacy systems and implementing microservices. I enjoy working in high-performance environments, managing CI/CD pipelines, and developing scalable SaaS, PaaS, and serverless solutions across multiple cloud providers.

Available to hire

I am a Senior Software Engineer with 20 years of full-stack development experience spanning desktop, web, and mobile platforms. Over my career, I’ve co-founded startups and specialized in automation, CI/CD, and scalable cloud solutions utilizing AWS, Azure, and GCP. My skill set includes proficiency in Java, C#, JavaScript frameworks, and both SQL and NoSQL databases.

My experience ranges from leading complex projects involving architecture and delivery to modernizing legacy systems and implementing microservices. I enjoy working in high-performance environments, managing CI/CD pipelines, and developing scalable SaaS, PaaS, and serverless solutions across multiple cloud providers.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Language

Portuguese

Fluent

English

Intermediate

Spanish; Castilian

Beginner

Work Experience

Senior Software Developer at Various Organizations (SSP, SJ, SEAP, ADM RAXI)

December 31, 2021 - September 5, 2025

Developed web, mobile, and desktop solutions for multiple organizations including communication and management platforms. Defined Android Studio MVVM architecture, modernized legacy systems, and led full-stack development using Angular, ASP.NET Core, Ionic, and SQL Server. Technologies included Java (Struts, JSP), ASP.Net Core C#, Android, Ionic, SQL Server, MySQL.

Specialist Senior Systems (Full-stack Java) at NTTDATA/ITAÚ

February 28, 2022 - September 5, 2025

Delivered full-stack development in high-performance environments with microservices integration using Hexagonal Architecture. Implemented Java Spring Boot solutions, Kafka messaging, REST APIs, container orchestration (Docker, Kubernetes), and CI/CD pipelines with Jenkins. Configured and maintained AWS EKS Kubernetes pipelines.

SAP HYBRIS Technical Consultant at EY (Ernest & Young)

December 1, 2023 - September 5, 2025

Served as a Technical Consultant for projects in Brasília and São Paulo with Java, Angular, SAP Cloud, NestJS, VueJS, Kafka, and Kubernetes. Managed maintenance, development, and feature updates while optimizing Azure CI/CD pipelines.

Co-founder at Aydconnection

January 1, 2023 - Present

Co-founded a startup focused on POS, ERP, security, and consumer data scalable solutions. Led Web3 development including Bitcoin and Binance Bots, Smart Contracts with React.js/Node.js and MongoDB. Directed planning and automation of system migrations to AWS and GCP.

Senior Software Developer at Various organizations including SSP, SJ, SEAP and ADM RAXI

December 31, 2021 - September 5, 2025

Developed solutions including web, mobile, and desktop systems with communication and management platforms. Defined Android Studio MVVM architecture and modernized legacy systems enabling distributed API implementation. Led full-stack development utilizing Angular, ASP.NET Core 3, C#, Ionic, and SQL Server 2016.

Specialist Senior Systems (Full-stack Java) at NTTDATA/ITAÚ

February 28, 2022 - September 5, 2025

Performed full-stack development in high-performance environments and microservices integration using Hexagonal Architecture. Implemented solutions using Java Spring Boot, Kafka, REST APIs, Docker, Kubernetes, and Jenkins. Configured and maintained AWS EKS Kubernetes pipelines.

SAP HYBRIS Technical Consultant at EY (Ernest & Young)

December 31, 2023 - September 5, 2025

Worked as Technical Consultant in BSB (Java, Angular, SAP Cloud) and BSC (NestJS, VueJS, Kafka, Kubernetes) environments. Managed maintenance, updates, and new feature development. Optimized and managed Azure CI/CD pipelines.

Co-founder / Technical Lead at Aydconnection - Startup

January 1, 2023 - Present

Co-founded a startup focused on POS, ERP, security, and consumer data solutions designed for scalability. Led Web3 development including Bitcoin/Binance bots and smart contracts using React.js and Node.js with MongoDB. Directed planning and automation of system migrations to AWS and GCP.