June 10, 2026

Senior Software / Systems Engineer – Python, C++, Networking

Senior • Hybrid

18,900 - 27,300 PLN

Warsaw, Poland

Ignite Innovation in Embedded Systems — Redefine the Future of Connectivity and Security!

Warsaw-based opportunity with hybrid work model.

As a Senior Software Engineer, you will be working for our client, a leading company in the manufacturing industry, focused on the development and deployment of critical encryption infrastructure. You will play a vital role in maintaining and advancing secure server and device solutions across Windows, Linux, and cloud environments. Join us to push the boundaries of hardware-software integration, ensuring robust security and operational excellence in high-stakes production lines. This is your chance to be part of pioneering technological progress.

Your main responsibilities:

  • Develop backend solutions in Python and hardware device drivers to support encryption systems.
  • Create new Windows applications based on existing modules, extending functionality and performance.
  • Enhance frontend components mainly supporting existing JavaScript modules in Node.js/Express.
  • Automate CI/CD workflows, develop tests, and streamline deployment processes.
  • Support and improve Windows batch scripts, deploy Windows services, and troubleshoot related applications.
  • Diagnose and resolve issues within Python, JavaScript, and C++ codebases.
  • Identify system risks, propose mitigation strategies, and implement solutions to prevent future problems.
  • Collaborate directly with product development teams on evolving existing solutions and developing new products.
  • Manage Windows and Linux servers on-premises and in the cloud, overseeing network configurations and VPN connectivity.
  • Navigate and maintain cloud-based systems, primarily AWS and Azure.
  • Conduct upgrades and deployment of encryption infrastructure on new production lines.
  • Occasionally travel domestically and internationally (up to 5%).

You're ideal for this role if you have:

  • An Engineering Degree in Electronics or Computer Science.
  • At least 5 years of hands-on experience in IT, automation, software engineering, or electronics.
  • Strong proficiency in IP Networking, computer systems, and database management.
  • Proven troubleshooting skills in Python and C++, with experience in Windows and Linux environments.
  • Ability to proactively identify risks and craft effective solutions.
  • Excellent communication and collaboration skills for working with international teams.
  • Fluency in English, both spoken and written, for technical documentation and team interactions.

It is a strong plus if you have: (optional)

  • Experience working with Azure or AWS cloud platforms.
  • Background in PKI system development.

Language Required for the role:

  • Fluent in English and Polish.

Eligibility for the role:

  • Only candidates with an existing legal right to work in the European Union will be considered for this role.

#MAKEYourCareerBETTER

Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.

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Technology

ITDS

Senior Fullstack Engineer – .NET and React Development

Senior

Hybrid

Krakow, Poland

24,150 - 32,550 PLN

🏢 Summary: Senior Fullstack Engineer role focused on building and enhancing scalable enterprise applications using .NET and React in a hybrid Krakow-based setup. The position involves leading UI improvements, contributing to architecture and DevOps automation, and delivering high-quality backend and frontend solutions. You will drive end-to-end development from design to deployment while ensuring performance, stability, and maintainability. 🗂️ Requirements: Minimum 7 years experience in .NET application development, Strong experience with React for frontend development, Proficiency in C# and Web API, Advanced SQL Server and T-SQL skills, Experience with CI/CD and DevOps practices, Understanding of SDLC, Experience with design patterns and software architecture, Fluent English, Legal right to work in EU 📃 Skills: .NET, C#, React, WebAPI, SQL, SQLServer, T-SQL, CI/CD, DevOps, SDLC, Docker, Kubernetes 🏢 Description: Unleash innovation — shape the future of enterprise applications. Krakow-based opportunity with hybrid work model. As a Senior Fullstack Engineer – .NET and React Development , you will be working for our client, a leader in enterprise software solutions, dedicated to delivering robust, scalable, and innovative digital tools. Your expertise will drive the development of cutting-edge applications that empower businesses worldwide, supporting their digital transformation journeys. Your main responsibilities: Implement solutions following best Design Patterns to ensure maintainability and scalability Analyze requirements to fully understand solutions and recommend improvements for optimal performance Lead UI enhancements and improvements to boost user experience and application stability Actively participate in DevOps automation and improve the CI/CD lifecycle processes Manage changes through the entire service management lifecycle, ensuring seamless updates Contribute to software architecture design and technical decision-making Develop and prototype applications to validate concepts and designs Provide exceptional customer support by addressing and resolving issues promptly Communicate effectively with clients to understand needs and deliver tailored solutions You're ideal for this role if you have: A minimum of 7 years of professional experience in production application development within .NET ecosystems, including front-end (preferably React) and DevOps practices Proficiency in C# and Web API development, with a focus on scalable, secure backend services Strong hands-on experience with React, building dynamic, responsive web applications Advanced SQL skills, particularly with SQL Server, including T-SQL scripting, query optimization, and performance tuning Solid understanding of the SDLC, from requirement gathering to deployment and maintenance Exceptional problem-solving abilities and an eye for detail to ensure high-quality deliverables It is a strong plus if you have: (optional) Certifications in cloud or DevOps tools Experience with containerization (e.g., Docker, Kubernetes) Language Required for the role: Fluent English (written and spoken) Eligibility for the role: Only candidates with an existing legal right to work in the European Union will be considered for this role. #MAKEYourCareerBETTER Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.