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I am Arkadius Pozarlino, a senior full-stack developer with 10+ years of experience building robust, scalable applications using .NET Core, ASP.NET MVC/Web API, and Angular. I enjoy architecting both backend and frontend solutions, delivering secure, high-performance systems, and leading teams in Agile environments to produce high-quality software. I specialize in designing multi-service architectures, cloud deployments on Microsoft Azure, and implementing CI/CD pipelines to accelerate delivery while reducing risk. I thrive on solving complex technical challenges and collaborating with product teams to drive business growth through reliable, maintainable software.…I am Arkadius Pozarlino, a senior full-stack developer with 10+ years of experience building robust, scalable applications using .NET Core, ASP.NET MVC/Web API, and Angular. I enjoy architecting both backend and frontend solutions, delivering secure, high-performance systems, and leading teams in Agile environments to produce high-quality software. I specialize in designing multi-service architectures, cloud deployments on Microsoft Azure, and implementing CI/CD pipelines to accelerate delivery while reducing risk. I thrive on solving complex technical challenges and collaborating with product teams to drive business growth through reliable, maintainable software.

Arkadius Pozarlino

Full Stack Developer, Back-End Developer, Front-End Developer, +2

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I am Arkadius Pozarlino, a senior full-stack developer with 10+ years of experience building robust, scalable applications using .NET Core, ASP.NET MVC/Web API, and Angular. I enjoy architecting both backend and frontend solutions, delivering secure, high-performance systems, and leading teams in Agile environments to produce high-quality software. I specialize in designing multi-service architectures, cloud deployments on Microsoft Azure, and implementing CI/CD pipelines to accelerate delivery while reducing risk. I thrive on solving complex technical challenges and collaborating with product teams to drive business growth through reliable, maintainable software.…I am Arkadius Pozarlino, a senior full-stack developer with 10+ years of experience building robust, scalable applications using .NET Core, ASP.NET MVC/Web API, and Angular. I enjoy architecting both backend and frontend solutions, delivering secure, high-performance systems, and leading teams in Agile environments to produce high-quality software. I specialize in designing multi-service architectures, cloud deployments on Microsoft Azure, and implementing CI/CD pipelines to accelerate delivery while reducing risk. I thrive on solving complex technical challenges and collaborating with product teams to drive business growth through reliable, maintainable software.

Available to hire

I am Arkadius Pozarlino, a senior full-stack developer with 10+ years of experience building robust, scalable applications using .NET Core, ASP.NET MVC/Web API, and Angular. I enjoy architecting both backend and frontend solutions, delivering secure, high-performance systems, and leading teams in Agile environments to produce high-quality software.

I specialize in designing multi-service architectures, cloud deployments on Microsoft Azure, and implementing CI/CD pipelines to accelerate delivery while reducing risk. I thrive on solving complex technical challenges and collaborating with product teams to drive business growth through reliable, maintainable software.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Language

Polish

Fluent

English

Fluent

Work Experience

Senior Software Engineer at Comarch SA

July 1, 2022 - Present

Developed and optimized scalable multi-tenant SaaS platforms using .NET Core 6+ and Angular 16+ for front-end development, delivering over 500k daily requests with high availability. Led the transition to a microservices architecture, improving deployment speed by 50% and reducing infrastructure costs by 20%. Built RESTful APIs and JWT authentication for secure, stateless sessions; integrated Angular with .NET Core APIs for seamless front-end/back-end interaction. Implemented real-time updates with WebSockets and established CI/CD pipelines using Azure DevOps for reliable multi-environment deployments.

Senior Software Engineer at Comarch SA

July 1, 2022 - Present

Developed and optimized scalable multi-tenant SaaS platforms using .NET Core 6+ and Angular 16+, handling over 500k daily requests with high availability. Led the transition to a microservices architecture, improving deployment speed by 50% and reducing infrastructure costs by 20%. Integrated Angular with .NET Core APIs to ensure seamless interaction between frontend and backend, optimizing for performance and security. Built RESTful APIs and JWT-based authentication for secure, stateless sessions. Introduced real-time updates with WebSockets for live order statuses and inventory updates. Established and maintained CI/CD pipelines using Azure DevOps across multiple environments.

Software Engineer at DockYard

June 1, 2022 - October 2, 2025

Developed and maintained serverless backends using .NET Core and AWS Lambda for telemedicine and fintech platforms, achieving cost savings and scalable APIs. Built API layers in .NET Core 3.1 and ASP.NET MVC; created dynamic Angular UIs for fintech apps; implemented JWT authentication; established automated testing pipelines (Jest, PyTest) with high test coverage and reduced post-deploy issues by 90%.

Software Engineer at DockYard

June 1, 2022 - October 2, 2025

Developed and maintained serverless backends using .NET Core and AWS Lambda for telemedicine and fintech platforms, achieving 15% cost savings through infrastructure optimization. Built API layers in .NET Core 3.1 and ASP.NET MVC to ensure scalability, security, and maintainability across services. Led the use of Angular 8+ to create highly dynamic, performance-optimized fintech UIs. Integrated JWT authentication with Angular to secure user logins. Established automated testing pipelines using Jest and PyTest, achieving 95%+ code coverage and reducing post-release issues by 90%.

Full Stack Engineer at Clevertech AI

December 1, 2019 - October 2, 2025

Led development of financial and e-commerce microservices using .NET Core 2.x and Angular 7+, delivering high-performance platforms. Implemented microservices with ASP.NET Core and connected to Angular frontends for modular, maintainable solutions. Optimized SQL Server and Redis usage to improve performance. Built reactive UIs with RxJS and NgRx for scalable data flow. Created secure APIs that comply with OWASP and GDPR.

Full Stack Engineer at Clevertech AI

December 1, 2019 - October 2, 2025

Led development of financial and e-commerce microservices using .NET Core 2.x and Angular 7+, ensuring high performance for high-traffic platforms. Implemented microservices with ASP.NET Core connected to Angular frontends for modular architecture. Optimized SQL Server and Redis usage to improve performance. Built reactive UIs with Angular, leveraging RxJS and NgRx for scalable data flow. Created secure APIs with OWASP/GDPR compliance.

Frontend / Full Stack Developer at buildo

May 1, 2017 - October 2, 2025

Developed financial SaaS apps using Angular 2+ and Java/PHP; designed front-end components to interact with back-end services; ensured secure, high-performing workflows for financial transactions.

Frontend / Full Stack Developer at buildo

May 1, 2017 - October 2, 2025

Developed financial SaaS applications using Angular 2+, Java, PHP, and SQL. Designed front-end components interacting with back-end services, ensuring secure workflows for financial transactions.