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April 24, 2026

Senior Full-Stack Engineer (C#, React)

Senior • Remote

Krakow, Poland

Svitla Systems Inc. is looking for a Senior Full-Stack Engineer (C#/React) for a full-time position (40 hours per week) in Europe. Our client is a leading global provider that gathers information and reports to enhance the environmental and social impacts on the business. 

Responsibilities:

  • Participate in the Agile software development (Scrum/Kanban) from concept design, to full-stack code and testing.

  • Write concise code, clear, well-tested, well-documented and with quality that adhere to industry best practices.

  • Optimize code for quality, performance, scalability, efficiencies and security; through testing, code scanning, refactoring and monitoring.

  • Collaborate with product owners to define/refine requirements, break down into development tasks, estimate effort, and plan milestones & deliverables.

  • Develop and maintain UI applications (web, mobile, etc.) and/or web APIs (RESTful & messaging-based).

  • Identify opportunities for innovation, improvement of software architecture and cloud infrastructure; and/or offer new ideas.

  • Advocate for simplicity, reliability, manageability, scalability, extensibility, reusability and performance.

  • Be a proactive team member who contributes, collaborates and demonstrates positive behaviour.

  • Provide development expertise to team members through education and review. Always open to new ideas and encourages innovative practices amongst peers.

  • Makes sure to constantly address technical debt - escalating when it becomes a risk to quality or timely delivery of our software.

  • Carries out root cause analysis on defects to ensure fixes are happening in the right way.

Requirements:

  • BSC in Computer Science, STEM (Science, Technology, Engineering, and Math), or equivalent work experience.

  • 7+ years of experience designing and building scalable, high-performance data-driven software applications.

  • Experience designing service-based and/or tiered web and mobile applications.

  • Excellent experience with C#. Web Services (WCF/Web API), SQL Server.

  • Experience with JavaScript, React, TypeScript, jQuery, HTML, CSS, and SASS is desired.

  • Experience with cloud deployment models (Azure), pipelines, and CI/CD is desired.

  • Experience utilizing AI tools within projects and to support aspects of the SDLC is essential.

  • Understanding and adhering to secure coding practices that meet OWASP standards.

  • Experience working in a continuous integration and deployment environment.

  • Experience practicing Scrum/Kanban and the ability to adapt to Scrum values.

  • Strong analytical and problem-solving skills.

  • Works effectively and independently in a dynamic team environment.

  • Proven time management, organizational, and follow-up skills to meet deadlines.

  • Quality-oriented with a passion for customer satisfaction.

  • Excellent interpersonal and communication skills.

  • Demonstrated initiative to learn and experiment with new technologies and processes.

  • Strong work ethic and professionalism.

Nice to have: Experience with C++

What we offer:

  • US and EU projects based on advanced technologies.

  • Competitive compensation based on skills and experience.

  • Regular performance appraisals to support your growth.

  • Flexibility in workspace, either remote or our welcoming office.

  • Bonuses for article writing, public talks, and other activities.

  • Generous time off, including vacation, national holidays, sick leaves, and family days.

  • Personalized learning programs tailored to your interests and skill development.

  • Free tech webinars and meetups organized by Svitla.

  • Regular corporate online activities.

  • Awesome team and a friendly, supportive community