Senior Full-Stack Developer (with Optimizely)

We are looking for an experienced Senior Full-Stack Developer (with Optimizely) to join the team of our client. The project focuses on building a modern e-commerce and marketing platform based on composable, headless, cloud architecture, with the goal of delivering a seamless and fully personalized end-to-end customer experience. Who we are: We are Inspeerity (part of DevelopX group), a modern software house, providing software development, consultancy, and maintenance services. We specialize in full stack development – from defining project requirements, to designing, building, and deploying software applications for web, backend, enterprise and mobile. We are crazy about technology, serious about people. TL;DR • Who: Senior Full-Stack Developer (with Optimizely) • Contract Type: B2B • Salary range: Up to 210 PLN/h + VAT • Start date: ASAP • Project lenght: ~12 months, with the possibility of extension. • Company: Software House • Project topic: Building Materials Industry What you’ll be doing: • Developing scalable technical solutions. • Building and maintaining automated build and deployment pipelines. • Developing features across the full technology stack, from data access and business logic to the user interface. • Writing unit tests, fixing bugs, and preparing documentation. • Troubleshooting and resolving production issues. • Collaborating closely with business stakeholders to translate requirements into effective technical solutions. You will be the best fit if you have: • At least 4 years of practical experience working with Microsoft .NET / ASP. NET Core and SQL Server. • Strong understanding of software architecture, design patterns, and engineering best practices. • Hands-on experience in full-stack development using C# and web technologies. • Solid knowledge of web application performance, quality standards, and security principles. • Genuine interest in Generative AI and its application in optimizing and automating the software development lifecycle. • Experience working in Agile environments, including CI/CD pipelines, TDD, and peer code reviews. • In addition to the stack mentioned above, experience in working with Apache Kafka, Webpack, TailwindCSS, Storybook, Chromatic, Rider, Visual Studio, Git, Github, Gitflow. • Experience with React is a plus. • English level B2 or higher. What we offer • Remote work model with occasional visits to our client's office in Poznań or Warsaw. • B2B contract. • You’ll join a collaborative team of 12 specialists. About process: • Step 1 - Call with with someone from our People Team. • Step 2 - Meeting with our .NET Team Lead as a technical interviewer. • Step 3 - Final stage. A technical interview with the client-side representatives. Time for your turn! ;)