.NET Software Developer

Description Vistex is a global enterprise software and services company that helps businesses take control of their mission-critical processes. With a multitude of programs covering pricing, trade, royalties and incentives, it can be complicated to see where all the money is flowing, let alone how much difference it makes to the topline and the bottom line. With Vistex, business stakeholders can see the numbers, see what really works, and see what to do next – so they can make sure every dollar spent or earned is really driving growth, and not just additional costs. The world’s leading enterprises across a spectrum of industries rely on Vistex every day to propel their businesses. Vistex is growing and we are looking for .NET Developers that are motivated individuals who are eager to learn and combine the art of design with the art of programming. This individual will be key contributors to numerous projects and development of cutting-edge technology and experiences for our clients. Currently, we’re looking to expand our team in Łódź with a new colleague who brings over 3 years of experience working with C#, .NET Core, ASP.NET Core, and is open to work on-site at least 1 day per week. Responsibilities: designing, developing, and maintaining backend application components and services using .NET technologies. analyzing functional and technical requirements and propose appropriate implementation solution developing and maintaining RESTful APIs and backend features. owning assigned modules and deliver tasks with minimal supervision. troubleshooting defects and resolve moderately complex technical issues contributing to code quality, performance, scalability, and improvements in maintainability collaborating closely with Product, QA, DevOps, and Senior Developers supporting production releases and post-release issue resolution contributing ideas and improvements to existing systems and development practices About us: The Vistex platform helps businesses finally get control of all their different promotions, rebates, SPAs, discounts, and other incentives. With so many programs across so many partner relationships, it can be impossible to see where all the money is going, let alone how much difference it’s actually making to revenue. With Vistex, business leaders can see the numbers, see what really works, and see what to do next – so they can make sure every dollar they spend really is driving more growth, not just more costs. It’s why global enterprises ranging from Coca-Cola to Sony to Grainger rely on Vistex every day. Vistex | Now it all adds up. ™ Qualifications Skills Behaviors Required Team Player : Works well as a member of a group Innovative : Consistently introduces new ideas and demonstrates original thinking : Motivations Required Ability to Make an Impact : Inspired to perform well by the ability to contribute to the success of a project or the organization : Education Required Bachelors or better in Information Technology or related field. Experience Required 3 years: Experience with C#, .NET Core, and ASP.NET Core Practical experience developing RESTful APIs and backend services Good understanding of OOP principles, SOLID practices, and clean/layered architecture Practical experience with relational and/or NoSQL databases Experience using ORM and writing efficient SQL queries Experience with testing frameworks (NUnit preferred) and API testing tools Working knowledge of microservices architecture and containerization (e.g., Docker) Working knowledge of deploying and supporting applications in cloud environments (Azure or AWS) Proficiency with Git and CI/CD pipelines Experience working in Agile/Scrum environments Excellent command of English, both written and spoken Preferred Experience with AI Frameworks (e.g., LangChain, LangGraph, Semantic Kernel) Knowledge of Agentic Workflows, including multi-agent systems and recursive planning. A background in advanced Prompt Engineering, specifically versioning and optimization tools. Licenses & Certifications https://www.vistex.com/careers/