Expert .NET Engineer

Ciklum is looking for a Expert .NET Engineer to join our team full-time in Ukraine. We are a custom product engineering company that supports both multinational organizations and scaling startups to solve their most complex business challenges. With a global team of over 4,000 highly skilled developers, consultants, analysts and product owners, we engineer technology that redefines industries and shapes the way people live. About the role: As a Expert .NET Engineer, become a part of a cross-functional development team engineering experiences of tomorrow. Responsibilities: Lead and improve the decision-making process in design solution architecture, solution development, architecture and code review Back-end development to meet customer’s business needs and implement components according to modern software development environment (cloud-based platforms, microservice architecture, etc.) Develop and review feature design documents and provide inputs/update to specifications for the solution Design and implement a set of various types of tests (unit, integration, functional, etc) Proactive position in architecture preparation, solution development, processes improvements Working in an international distributed team in an Agile environment Communicate with PMs, engineers, Architects, QA and other colleagues and stakeholders Delivering the product roadmap and plannings To use high coding standards, software best practices and write highly testable, automatable and performant code over the whole SDLC Requirements: Experience in software development for more than 5 years Excellent knowledge in Computer Science, Computing Theory: Paradigm & Principles (OOP, SOLID, DDD, TDD, BDD) Database theory (RDBMS, NoSQL) Code testing practices Algorithms Data structures Architectural, Enterprise and Design Patterns Serverless architecture Microservices architecture Deployment patterns Security patterns, Reverse engineering resistance, Common attacks types (OWASP) Understanding of network interactions: protocols conventions (e.g. REST, RPC) authentication and authorization flows standards and practices (e.g. oAuth, JWT) Excellent knowledge and experience in C# and .NET (more than 5 years) Practical commercial experience with: REST API development .NET Core, ASP.NET (Core, MVC, WebAPI) (more than 5 years) Testing frameworks (e.g. e.g. NUnit, XUnit, MSTest) (more than 3 years) ORM (e.g. Entity Framework, Dapper) (more than 3 years) RDBMS (e.g. SQL Server, MySQL/MariaDB, PostgreSQL) (more than 4 years) Web Servers Version control systems (GIT) Cloud computing platforms (AWS (must have), Microsoft Azure, Google Cloud Platform (optional)) Integration with 3rd party solutions Containerization (Docker) Continuous Integration tools (e.g. Gitlab Pipeline, Jenkins, TeamCity, Bamboo) Experience with Infrastructure as Code using Terraform Experience with deployment automation an CI/CD Strong experience using AI coding assistants (e.g., Amazon Q, GitHub Copilot, Claude Code) effectively and responsibly Experience with: Leading Team Troubleshooting, profiling and debugging applications Creation software architecture and design of complex applications, platforms, microservices solutions Agile software processes and technologies Code Review process Refactoring process Understanding of software development and architecture best practices Fluent English Supervise individuals and teams, and work under general direction within a clear framework of accountability. Lead, support and monitor progress against agreed quality and performance criteria. Facilitate effective working relationships between team members Perform a broad range of complex technical or professional activities, in a variety of contexts Investigate, define and resolve complex issues Drive distributed cross-functional teams. Influence customers and team members on the project level Contribute to project team composition planning, conduct interviews. Facilitate selection, assessment and onboarding processes, and Ciklumers’ allocation on projects Communicate fluently and present complex information to both technical and non-technical audiences Identify, proactively rise, and manage risks (resolutions, corrective actions and lessons learned) Desirable: Certifications on: Microsoft Certified Developer Cloud computing platforms (AWS, Microsoft Azure, Google Cloud Platform) Delivery processes (SAFe, Agile, etc) Experience with Leading and Supporting medium to large size solution delivery projects Experience with building or integrating payment solutions Understanding of orchestration and containerisation (e.g. Kubernetes, Swarm) Practical commercial experience with: Provisioning tools (e.g. Terraform, Ansible) Quality tools (e.g. SonarQube) NoSQL (e.g. MongoDB, ElasticSearch, CouchDB) Search Engines (e.g. ElasticSearch, Azure Search, Apache Solr) Key-value storages (e.g. Redis, Memcached) Messaging systems (e.g. RabbitMQ, Apache Kafka, Active MQ, AWS SQS, Azure Service Bus, Google Pub/Sub) Event-driven architectures and asynchronous messaging patterns Serverless architectures Gitlab yaml CI pipelines Google Cloud Apigee What’s in it for you? Strong community: Work alongside top professionals in a friendly, open-door environment Growth focus: Take on large-scale projects with a global impact and expand your expertise Tailored learning: Boost your skills with internal events (meetups, conferences, workshops), Udemy access, language courses, and company-paid certifications Endless opportunities: Explore diverse domains through internal mobility, finding the best fit to gain hands-on experience with cutting-edge technologies Flexibility: Enjoy radical flexibility – work remotely or from an office, your choice Care: We’ve got you covered with company-paid medical insurance, mental health support, and financial & legal consultations About us: At Ciklum, we are always exploring innovations, empowering each other to achieve more, and engineering solutions that matter. With us, you’ll work with cutting-edge technologies, contribute to impactful projects, and be part of a One Team culture that values collaboration and progress. As one of Ukraine’s largest IT companies and a top employer recognized by Forbes, we’ve spent over 20 years delivering meaningful tech solutions. We proudly support diverse talent and military veterans, recognizing their unique skills and perspectives they bring to shaping the future. Explore, empower, engineer with Ciklum! Interested already? We would love to get to know you! Submit your application. We can’t wait to see you at Ciklum. #LI-NO1