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I'm Stanislav Androniuk, a Senior Full-Stack Engineer based in Marburg, Germany, with 8 years of experience in web development across diverse domains. I design and build scalable, high-performance applications—from single-page apps to large billing systems built on microservice architecture, managing the full customer lifecycle from registration to termination. I specialize in designing, refactoring, and migrating legacy systems to modern platforms, with a strong focus on reliability, maintainability, and long-term scalability. My primary stack includes .NET, C#, Angular, TypeScript, JavaScript, ASP.NET Core, EF Core, MS SQL, PostgreSQL, HTML, CSS, RabbitMQ, TeamCity, Octopus, Azure/AWS DevOps, Elasticsearch, Docker, DDD, and REST. I enjoy collaborating with product, design, and QA teams to deliver features on time, and I’m proactive about monitoring and resolving production incidents to maximize uptime.…I'm Stanislav Androniuk, a Senior Full-Stack Engineer based in Marburg, Germany, with 8 years of experience in web development across diverse domains. I design and build scalable, high-performance applications—from single-page apps to large billing systems built on microservice architecture, managing the full customer lifecycle from registration to termination. I specialize in designing, refactoring, and migrating legacy systems to modern platforms, with a strong focus on reliability, maintainability, and long-term scalability. My primary stack includes .NET, C#, Angular, TypeScript, JavaScript, ASP.NET Core, EF Core, MS SQL, PostgreSQL, HTML, CSS, RabbitMQ, TeamCity, Octopus, Azure/AWS DevOps, Elasticsearch, Docker, DDD, and REST. I enjoy collaborating with product, design, and QA teams to deliver features on time, and I’m proactive about monitoring and resolving production incidents to maximize uptime.

Stanislav Androniuk

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

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I'm Stanislav Androniuk, a Senior Full-Stack Engineer based in Marburg, Germany, with 8 years of experience in web development across diverse domains. I design and build scalable, high-performance applications—from single-page apps to large billing systems built on microservice architecture, managing the full customer lifecycle from registration to termination. I specialize in designing, refactoring, and migrating legacy systems to modern platforms, with a strong focus on reliability, maintainability, and long-term scalability. My primary stack includes .NET, C#, Angular, TypeScript, JavaScript, ASP.NET Core, EF Core, MS SQL, PostgreSQL, HTML, CSS, RabbitMQ, TeamCity, Octopus, Azure/AWS DevOps, Elasticsearch, Docker, DDD, and REST. I enjoy collaborating with product, design, and QA teams to deliver features on time, and I’m proactive about monitoring and resolving production incidents to maximize uptime.…I'm Stanislav Androniuk, a Senior Full-Stack Engineer based in Marburg, Germany, with 8 years of experience in web development across diverse domains. I design and build scalable, high-performance applications—from single-page apps to large billing systems built on microservice architecture, managing the full customer lifecycle from registration to termination. I specialize in designing, refactoring, and migrating legacy systems to modern platforms, with a strong focus on reliability, maintainability, and long-term scalability. My primary stack includes .NET, C#, Angular, TypeScript, JavaScript, ASP.NET Core, EF Core, MS SQL, PostgreSQL, HTML, CSS, RabbitMQ, TeamCity, Octopus, Azure/AWS DevOps, Elasticsearch, Docker, DDD, and REST. I enjoy collaborating with product, design, and QA teams to deliver features on time, and I’m proactive about monitoring and resolving production incidents to maximize uptime.

Available to hire

I’m Stanislav Androniuk, a Senior Full-Stack Engineer based in Marburg, Germany, with 8 years of experience in web development across diverse domains. I design and build scalable, high-performance applications—from single-page apps to large billing systems built on microservice architecture, managing the full customer lifecycle from registration to termination.

I specialize in designing, refactoring, and migrating legacy systems to modern platforms, with a strong focus on reliability, maintainability, and long-term scalability. My primary stack includes .NET, C#, Angular, TypeScript, JavaScript, ASP.NET Core, EF Core, MS SQL, PostgreSQL, HTML, CSS, RabbitMQ, TeamCity, Octopus, Azure/AWS DevOps, Elasticsearch, Docker, DDD, and REST. I enjoy collaborating with product, design, and QA teams to deliver features on time, and I’m proactive about monitoring and resolving production incidents to maximize uptime.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

English

Advanced

German

Beginner

Ukrainian

Fluent

Russian

Fluent

Work Experience

Senior Full-Stack Engineer at Freelance (Remote)

May 1, 2024 - Present

Implementing backend APIs in C# and Java; interacting with PostgreSQL; designing new services; debugging code issues; utilizing Git for source control; working with HTML, CSS, and JavaScript.

Senior Full-Stack Engineer at HY S-Enterprise

April 1, 2024 - October 20, 2025

Led the development of a comprehensive billing system for the full customer lifecycle; implemented and maintained CI/CD with TeamCity and Octopus Deploy; built robust automated test frameworks; contributed to microservices; performed refactoring, performance tuning, and integration with external banking services; collaborated with product, design, and QA to deliver features on time; helped resolve production incidents and improved system uptime.

Full-Stack Engineer at WebForBiz

April 1, 2017 - October 20, 2025

Designed and implemented modern web applications with responsive UIs; developed high-performance landing pages and scalable e-commerce platforms; maintained and enhanced a portfolio of web applications for diverse clients.