April 25, 2026
Middle/Senior .NET Developer
Senior • Remote
Warsaw, Poland
Svitla Systems Inc. is looking for a .NET/C# Application Developer with DevOps expertise for a full-time position (40 hours per week) in Poland. The ideal candidate will support application migration, development, oversee cloud environments, and automate CI/CD pipelines.
Requirements/Skills:
Strong knowledge of .NET/C#
Experience with Amazon Web Services (AWS)
Ability to build and manage infrastructure as code using Terraform
Practical knowledge of GitOps and deployment management with Argo CD
Experienced in creating and maintaining Kubernetes (K8s) clusters
Familiar with Kafka for queuing and data streaming
Skilled in working with CI/CD pipelines and code repositories in GitLab
Good understanding of database administration and optimization with PostgreSQL
Experience working with Agile methodologies (Scrum / Agile)
Proficiency in Jira and Confluence
Experience conducting code reviews
Ability to create technical and user documentation
Technical English skills for reading documentation and communicating within an international team
Responsibilities:
Developing and maintaining backend services using .NET / C#
Deploying and managing applications in AWS
Building and maintaining Infrastructure as Code with Terraform
Managing deployments using GitOps practices and Argo CD
Working with Kubernetes (K8s) to deploy and manage containerized applications
Implementing and maintaining CI/CD pipelines in GitLab
Working with Kafka for messaging and data streaming
Managing and optimizing PostgreSQL databases
Participating in Agile/Scrum processes
Conducting code reviews and maintaining technical documentation
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 the workspace, either remote or in our welcoming office.
Comprehensive medical insurance after one month.
MultiSport card with access to 2500 sports facilities all over Poland
Bonuses for recommendations of new employees.
Bonuses for article writing, public talks, and other activities.
15 vacation days, 10 national holidays, 10 sick leaves, and family days off.
Personalized learning program tailored to your interests and skill development.
Free tech webinars and meetups organized by Svitla.
Welcome and anniversary presents, gifts for children, and more.
Regular corporate events and meetups.
Awesome team, friendly and supportive community!
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Remote
Warsaw, Poland
🏢 Summary: Full-time Senior Full Stack Engineer role focused on building and maintaining scalable backend services with .NET and Java/Kotlin, and contributing to frontend development with Angular. The position involves designing secure APIs, driving UI architecture, and working within Agile teams to deliver commercial software products. Approximately 20–30% of the role is dedicated to frontend development. 🗂️ Requirements: 5+ years of commercial software development experience, Strong experience with .NET (C#) backend development, Strong experience with Java or Kotlin backend development, Hands-on experience with Kotlin in backend environments, Knowledge of Angular and TypeScript, Experience designing and working with RESTful APIs and SOAP APIs, Understanding of backend architecture, performance, security, scalability, Knowledge of Azure Cloud and application deployment, Familiarity with Azure DevOps and CI/CD processes, Experience with modern web development practices, Experience working in Agile/Scrum environments, Bachelor’s degree in Computer Science or equivalent experience, Strong English communication skills 📃 Skills: .NET, C#, Java, Kotlin, Angular, TypeScript, REST, SOAP, Azure, AzureDevOps, CI/CD 🏢 Description: Svitla Systems Inc. is looking for a Senior Full Stack Engineer with .NET, Java, and Angular 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. A Senior Engineer must have strong backend expertise in .NET and Java/Kotlin, as well as frontend experience in Angular. Requirements: 5+ years of commercial experience in software development. Strong experience with .NET (C#) and Java/Kotlin backend development. Hands-on experience with Kotlin in backend environments. Knowledge of Angular and TypeScript. Understanding of designing and working with RESTful APIs and SOAP APIs. Solid understanding of backend architecture, including performance, security, and scalability. Knowledge of Azure Cloud, including deployment and scaling of applications. Familiarity with Azure DevOps and CI/CD processes. Strong understanding of modern web development practices. Experience working in Agile/Scrum environments. Strong communication skills in English. Bachelor’s degree in Computer Science or equivalent experience. Responsibilities: Work within an Agile team to design, estimate, develop, test, and deliver commercial software products. Develop and maintain backend services using .NET and Java/Kotlin. Design and implement secure, scalable RESTful APIs and services. Contribute to frontend development using Angular and TypeScript (~20–30%). Drive UI architecture and develop reusable UI components. Ensure best practices and design guidelines for UI and backend development. Write clean, maintainable, and efficient code for both client-side and server-side applications. Develop unit and integration tests; collaborate with QA to resolve issues. Collaborate with Product Owners and stakeholders to refine requirements and user stories. Contribute to project estimation, planning, timelines, and status updates. Provide technical guidance and mentorship where needed. 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!
Technology
Svitla Systems
Full-Stack Architect (.NET + React)
Senior
Remote
Warsaw, Poland
🏢 Summary: Full Stack Architect role focused on building and optimizing data-intensive applications using React and .NET, with strong emphasis on AWS-based infrastructure and scalable architecture. The position involves designing, developing, and maintaining full-stack solutions, optimizing MySQL and Elasticsearch data layers, and managing containerized deployments with ECS and Kubernetes. The role requires hands-on architectural improvements, performance tuning, and end-to-end ownership from development to production deployment. 🗂️ Requirements: Bachelor’s degree in Computer Science or related field or equivalent experience, Minimum 5 years of experience in front-end and application development, Strong proficiency in JavaScript and React, Proficiency in .NET and Microsoft development tools, Strong experience with MySQL 8 including optimization and schema design, Hands-on experience with Elasticsearch, Deep understanding of AWS infrastructure and core services, Experience with ECS and Kubernetes for container orchestration, Experience with Docker, Expertise in responsive web design and cross-browser compatibility, Experience building data-intensive and scalable applications, Experience working in Agile environments 📃 Skills: JavaScript, React, .NET, MySQL, Elasticsearch, AWS, ECS, Kubernetes, Docker, VisualStudio, VSCode, HTML, CSS, Agile 🏢 Description: Svitla Systems Inc. is looking for a Full Stack Architect with React and .NET for a full-time position (40 hours per week) in Europe. Our client specializes in delivering digital forensic and incident response solutions tailored for businesses, public safety organizations, and service providers engaged in the investigation of cybercrimes. Requirements: Education: Associate/Bachelor's/Master's degree in Computer Science or a related field, or equivalent professional experience. Experience: Minimum of 5 years in front-end development, UI design, and application development. Tech Stack: Fluency in JavaScript and React . Proficiency in the Microsoft/.NET stack and development lifecycle tooling (Visual Studio / VS Code). Strong experience with MySQL 8 (optimization, schema design, and complex queries). Hands-on experience with Elasticsearch for full-text search and analytics. Infrastructure & DevOps: Deep understanding of AWS infrastructure and core services. Experience deploying and managing applications using ECS (Elastic Container Service) and K8S (Kubernetes) . Familiarity with Docker and container orchestration. Design & Standards: Expertise in responsive design for both mobile and desktop views. In-depth knowledge of cross-browser compatibility and modern web standards. Soft Skills & Methodology: Experience in Agile development methodologies. Ability to work independently and within cross-functional teams to produce high-quality deliverables. Proven track record of building data-intensive applications with a focus on performance and scalability. Responsibilities: Full-Stack Development: Develop and maintain complex full-stack applications, ensuring seamless integration between React front-ends and .NET back-ends. System Analysis: Analyze the current application stack, identifying bottlenecks in data-intensive workflows and recommending architectural improvements. Infrastructure Management: Implement and manage scalable solutions on AWS , leveraging ECS/K8S for container orchestration and ensuring high availability. Data Strategy: Architect and optimize data storage solutions using MySQL 8 and Elasticsearch to handle large-scale datasets efficiently. Introspection & Monitoring: Help implement tools to provide system introspection, logging, and performance monitoring across the distributed stack. Collaboration: Work closely with cross-functional teams to bring software solutions from initial concept to production deployment. Code Quality: Write clean, efficient, and well-documented code, adhering to industry best practices and internal coding standards. Innovation: Stay up-to-date with emerging technologies (particularly in the AWS and CNCF ecosystems) to suggest process enhancements and technical upgrades. Execution: Meet required schedules and release cycle timelines in a fast-paced environment. Adaptability: Rapidly learn and integrate new business models, concepts, and technologies into the existing ecosystem.