Senior / Lead Fullstack Developer (React+.NET) @ CSHARK Sp. z o.o.

We are looking for an experienced Fullstack Developer with expertise in recent .NET technologies and frontend development using the React framework . We are especially interested in someone who would like to grow into a Tech Lead role , taking more responsibility for technical decisions, mentoring others, and shaping the architecture of our solutions.

We value direct communication, an open approach to problem-solving, and a willingness to learn new technologies.

Currently, we are working on an extensive reporting system that provides detailed information on fuel economy.

You will be working on cutting-edge, cloud-based software. Our tech stack includes C#, .NET, React, TypeScript, AWS / Azure, microservices, Docker, Kubernetes, RabbitMQ, and gRPC.

In Short

🌎 100%  REMOTELY  or from one of our 2 offices (Wrocław, Bielsko-Biała)

💰 Salary 125 PLN - 150 PLN net / h

☑️ B2B contract

• Over 4 years of commercial experience in programming.
• Hands-on experience with C#, .NET, React, and TypeScript.
• Familiarity with modern frontend frameworks and libraries (e.g., Next.js, Gatsby).
• Good knowledge of cloud solutions in AWS or Azure.
• Solid knowledge of databases such as MS SQL , NoSQL , and ElasticSearch.
• Experience in building applications in modular monolith and microservices architecture (understanding the concepts, using message queues, and working with object databases).
• Knowledge of solid coding practices, including peer code reviews, unit testing, continuous integration, and TDD.
• Familiarity with development approaches such as DDD , CQRS , and Clean Architecture.
• Proficiency in Entity Framework and the ability to write efficient queries.
• Experience with containerization tools like Docker and working in dockerized environments.
• A keen interest in staying current with the latest trends and techniques in the industry.
• Comfortable communicating in Polish and English (B2 level minimum).
• Experience with AI tools such as CursorAI, Claude Code, Codex, Copilot, etc.

We are looking for an experienced Fullstack Developer with expertise in recent .NET technologies and frontend development using the React framework . We are especially interested in someone who would like to grow into a Tech Lead role , taking more responsibility for technical decisions, mentoring others, and shaping the architecture of our solutions.

We value direct communication, an open approach to problem-solving, and a willingness to learn new technologies.

Currently, we are working on an extensive reporting system that provides detailed information on fuel economy.

You will be working on cutting-edge, cloud-based software. Our tech stack includes C#, .NET, React, TypeScript, AWS / Azure, microservices, Docker, Kubernetes, RabbitMQ, and gRPC.

In Short

🌎 100%  REMOTELY  or from one of our 2 offices (Wrocław, Bielsko-Biała)

💰 Salary 125 PLN - 150 PLN net / h

☑️ B2B contract

,[Implementing new functionalities and creating scalable software using .NET, React, and TypeScript technologies., Contributing to a cross-functional product team., Writing clear, maintainable, and testable code with a focus on good testing practices, including unit, integration, and end-to-end testing., Estimating, prioritizing, planning, and coordinating development and testing activities., Staying up to date with new development, testing tools, and architectural design strategies., Supporting the team with feedback, code reviews, and pair programming., Being a part of a SCRUM team.] Requirements : .NET, MS SQL, NoSQL, Data base, Elasticsearch, Microservice architecture, AWS, DDD, TDD, CI / CD, SOLID, IaC, React, TypeScript, PostgreSQL, Cosmos DB Additionally : Remote work.