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I am a certified software developer with many years of experience. I have participated in every stage of the software development lifecycle, from defining requirements to design, implementation, testing, and maintenance. I have very strong analytical skills, excellent communication and interpersonal abilities, and I am a fast learner who is passionate and enthusiastic about my work. My main specializations include software development (C# with a focus on backend and microservices architecture), .NET technologies, database development, system design and optimization, and cleaning and improving legacy code.…I am a certified software developer with many years of experience. I have participated in every stage of the software development lifecycle, from defining requirements to design, implementation, testing, and maintenance. I have very strong analytical skills, excellent communication and interpersonal abilities, and I am a fast learner who is passionate and enthusiastic about my work. My main specializations include software development (C# with a focus on backend and microservices architecture), .NET technologies, database development, system design and optimization, and cleaning and improving legacy code.

Maciej Januchowski

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

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I am a certified software developer with many years of experience. I have participated in every stage of the software development lifecycle, from defining requirements to design, implementation, testing, and maintenance. I have very strong analytical skills, excellent communication and interpersonal abilities, and I am a fast learner who is passionate and enthusiastic about my work. My main specializations include software development (C# with a focus on backend and microservices architecture), .NET technologies, database development, system design and optimization, and cleaning and improving legacy code.…I am a certified software developer with many years of experience. I have participated in every stage of the software development lifecycle, from defining requirements to design, implementation, testing, and maintenance. I have very strong analytical skills, excellent communication and interpersonal abilities, and I am a fast learner who is passionate and enthusiastic about my work. My main specializations include software development (C# with a focus on backend and microservices architecture), .NET technologies, database development, system design and optimization, and cleaning and improving legacy code.

Available to hire

I am a certified software developer with many years of experience. I have participated in every stage of the software development lifecycle, from defining requirements to design, implementation, testing, and maintenance.

I have very strong analytical skills, excellent communication and interpersonal abilities, and I am a fast learner who is passionate and enthusiastic about my work. My main specializations include software development (C# with a focus on backend and microservices architecture), .NET technologies, database development, system design and optimization, and cleaning and improving legacy code.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Language

English

Fluent

German

Intermediate

Polish

Fluent

Work Experience

Senior Software Engineer at SellerX (formerly KW-Commerce)

January 1, 2020 - December 31, 2025

Design and development of microservices to synchronize data between systems; adapting existing services to work with different ERP; legacy code refactoring, optimization, adding tests, migrating to the cloud, and implementing CI/CD pipelines.

Senior C#-Developer at Chal-Tec GmbH

January 1, 2020 - December 31, 2025

Design and development of system integrating new WMS with ERP; development and optimization of in-house middleware to manipulate and transfer data between ERP and web shops across channels; legacy code optimization and refactoring.

Software Development Engineer at FACTON GmbH

January 1, 2017 - December 31, 2018

Design and development of customer-specific modules; development of integration services as interface between customer and FACTON EPC data; legacy code optimization, refactoring, adding unit tests.

Senior Software Developer at OneChain GmbH

January 1, 2015 - December 31, 2016

Development of algorithms based on Theory of Constraints; development and maintenance of C# backend services; implementing and designing ASP pages.

Software Developer, Project Leader at SoftVig

January 1, 2001 - December 31, 2013

Design and development of Warehouse Management System; modules of Customer Relationship Management; close work with key customer to customize offered software.