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I am a result-driven Senior Software Engineer with 12 years of experience designing, developing, and optimizing innovative software solutions across diverse industries such as healthcare, fintech, e-commerce, and telecommunication. I specialize in creating comprehensive solutions that improve operational efficiency and user satisfaction while producing reliable, high-quality code. I am proficient in multiple programming languages and development tools, with a strong focus on addressing complex challenges with precision. I am committed to continuous professional growth and innovation, enjoying collaboration in Agile environments and leveraging AI-powered tools to enhance daily development workflows.…I am a result-driven Senior Software Engineer with 12 years of experience designing, developing, and optimizing innovative software solutions across diverse industries such as healthcare, fintech, e-commerce, and telecommunication. I specialize in creating comprehensive solutions that improve operational efficiency and user satisfaction while producing reliable, high-quality code. I am proficient in multiple programming languages and development tools, with a strong focus on addressing complex challenges with precision. I am committed to continuous professional growth and innovation, enjoying collaboration in Agile environments and leveraging AI-powered tools to enhance daily development workflows.

Aleksandar Mladenovic

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

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I am a result-driven Senior Software Engineer with 12 years of experience designing, developing, and optimizing innovative software solutions across diverse industries such as healthcare, fintech, e-commerce, and telecommunication. I specialize in creating comprehensive solutions that improve operational efficiency and user satisfaction while producing reliable, high-quality code. I am proficient in multiple programming languages and development tools, with a strong focus on addressing complex challenges with precision. I am committed to continuous professional growth and innovation, enjoying collaboration in Agile environments and leveraging AI-powered tools to enhance daily development workflows.…I am a result-driven Senior Software Engineer with 12 years of experience designing, developing, and optimizing innovative software solutions across diverse industries such as healthcare, fintech, e-commerce, and telecommunication. I specialize in creating comprehensive solutions that improve operational efficiency and user satisfaction while producing reliable, high-quality code. I am proficient in multiple programming languages and development tools, with a strong focus on addressing complex challenges with precision. I am committed to continuous professional growth and innovation, enjoying collaboration in Agile environments and leveraging AI-powered tools to enhance daily development workflows.

Available to hire

I am a result-driven Senior Software Engineer with 12 years of experience designing, developing, and optimizing innovative software solutions across diverse industries such as healthcare, fintech, e-commerce, and telecommunication. I specialize in creating comprehensive solutions that improve operational efficiency and user satisfaction while producing reliable, high-quality code.

I am proficient in multiple programming languages and development tools, with a strong focus on addressing complex challenges with precision. I am committed to continuous professional growth and innovation, enjoying collaboration in Agile environments and leveraging AI-powered tools to enhance daily development workflows.

Skills

Experience Level

Expert

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Intermediate

Work Experience

Senior Full-Stack Engineer at Microsoft

May 31, 2025 - August 1, 2025

Led a cross-functional team in developing Microsoft Rewards, a platform allowing users to earn points through various activities. Directed frontend development using React with TypeScript, Fluent UI, and Storybook for UI component testing. Developed backend RESTful APIs with C#, ASP.NET Core, and ASP.NET Web API, and implemented API documentation using OpenAPI/Swagger UI. Enhanced application performance using LINQ and Azure Cache for Redis, optimized SQL queries, and applied stored procedures and indexing strategies. Utilized Azure cloud services such as App Service, Functions, BlobStorage, CosmosDB, Application Gateway, Entra ID, Service Bus, and Event Grid to build event-driven microservice architecture. Actively participated in Scrum/Agile team activities including code reviews, mentoring, and planning.

Full-Stack Developer at Challenge Entertainment

December 1, 2021 - August 1, 2025

Led development of a video conferencing platform for remote diagnosis leveraging ASP.NET Core, WebRTC, and AI technologies. Developed frontend using Angular, NgRx, RxJS, and Angular Universal, optimizing production builds with Webpack. Architected and developed backend with ASP.NET Core and Blazor, leveraging SignalR and ASP.NET Identity 2. Managed MS-SQL database through LINQ, T-SQL, and Entity Framework Core, deploying on Azure SQL Database. Designed cloud infrastructure with Azure Functions, Event Hub, Service Bus, and App Service. Implemented end-to-end automated QA testing using Cypress, Selenium, and Cucumber.

Full-Stack Developer at Mycroft

May 31, 2020 - August 1, 2025

Developed healthcare platforms such as Hospital Management System using C#, .NET Core, ASP.NET Core, ASP.NET Web API, PostgreSQL, and RavenDB in a microservice, event-driven architecture with Apache Kafka and RabbitMQ. Contributed to frontend development with Angular, NgRx, RxJS, Kendo UI, Figma, and TailwindCSS. Managed hybrid-cloud infrastructure with Terraform on AWS Aurora, DynamoDB, S3, Lambda and Azure services including App Service and CosmosDB. Implemented auto-scaling microservices via Docker and Kubernetes deployed on Azure Kubernetes Service (AKS). Automated build pipelines using Jenkins and Ansible and set up CI/CD with Azure DevOps Pipelines. Secured platform with JWT, OAuth2 SSO, MFA, RBAC, and AES256 data encryption.

Fullstack Developer at Hotovo

April 1, 2018 - August 1, 2025

Developed finance platform handling payment gateway using C#, .NET Framework, Razor, ASP.NET WebForms, and ASP.NET MVC. Migrated legacy jQuery frontend to React with Redux, Redux Saga, Redux Thunk, Material Design, and Bootstrap. Implemented serverless architecture with AWS Lambda, EC2, S3, Amplify, API Gateway, and DynamoDB. Wrote unit tests with xUnit, NUnit, MSTest, Moq, and automated end-to-end testing via Puppeteer, Cypress, and Playwright. Managed logging and analytics with ElasticSearch, Logstash, Kibana, Sentry, and Datadog. Improved MongoDB database performance using sharding and clustering.

Senior Full-Stack Engineer at Microsoft

May 1, 2025 - August 1, 2025

Led a cross-functional team in the development of Microsoft Rewards, allowing users to earn points through activities like Bing search, shopping, Xbox gaming, and completing challenges. Directed frontend development with React, TypeScript, Fluent UI, and Storybook. Developed backend RESTful APIs using C#, ASP.NET Core, and ASP.NET Web API, documenting services with OpenAPI/Swagger UI. Improved performance using LINQ and Azure Cache for Redis. Optimized SQL queries via stored procedures and indexing. Utilized Azure services including App Service, Functions, Blob Storage, CosmosDB, Application Gateway, Entra ID, Service Bus, and Event Grid to implement event-driven microservice architecture. Actively participated in Scrum/Agile activities including code reviews, mentoring, and planning.

Full-Stack Developer at Challenge Entertainment

December 1, 2021 - August 1, 2025

Led development of a video conferencing platform for remote diagnosis using ASP.NET Core, WebRTC, and AI. Contributed frontend development with Angular, NgRx, RxJS, Angular Universal, and optimized builds with Webpack. Architected and developed backend using ASP.NET Core, Blazor, SignalR, and ASP.NET Identity. Managed MS-SQL database with LINQ, T-SQL, and Entity Framework Core, deployed on Azure SQL Database. Designed cloud infrastructure with Azure Functions, Event Hub, Service Bus, and App Service. Implemented end-to-end testing and automated QA processes using Cypress, Selenium, and Cucumber.

Full-Stack Developer at Mycroft

May 1, 2020 - August 1, 2025

Developed healthcare platforms like Hospital Management System using C#, .NET Core, ASP.NET Core, Web API, and PostgreSQL with microservice event-driven architecture utilizing Apache Kafka and RabbitMQ. Participated in frontend development with Angular, NgRx, RxJS, Kendo UI, Figma, and TailwindCSS. Managed hybrid-cloud infrastructure via Terraform with AWS Aurora, DynamoDB, S3, Lambda, and Azure services. Implemented auto-scaling microservices using Docker, Kubernetes, and deployed on Azure Kubernetes Service. Automated build pipelines with Jenkins and Ansible, set up CI/CD with Azure DevOps Pipelines. Reinforced platform security via JWT, SSO with OAuth2, MFA, RBAC, and AES256 encryption.

Fullstack Developer at Hotovo

April 1, 2018 - August 1, 2025

Developed a finance platform handling payment gateways using C#, .NET Framework, Razor, ASP.NET WebForms, and ASP.NET MVC. Migrated legacy frontend from jQuery to React with Redux and material design frameworks. Implemented serverless architecture with AWS Lambda, EC2, S3, Amplify, API Gateway, and DynamoDB. Created unit tests with xUnit, NUnit, MSTest, Moq and automated end-to-end testing with Puppeteer, Cypress, and Playwright. Established log analytics with ElasticSearch, Logstash, Kibana, Sentry, and Datadog. Managed MongoDB schemas with Entity Framework and enhanced database performance using sharding and clustering.