Ciklum is looking for a Senior .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 Senior .NET Engineer, become a part of a cross-functional development team engineering experiences of tomorrow.

Responsibilities:

Back-end development to meet customer’s business needs and implement components according to modern software development environment (cloud-based platforms, microservice architecture, etc.)
Taking part in the decision-making process in design application architecture, solution development, architecture and code review
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 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 4 years
Excellent knowledge in Computer Science, Computing Theory:
- Paradigm & Principles (OOP, SOLID, DDD, TDD, BDD)
- Microservices architecture
- Database theory (RDBMS, NoSQL)
- Code testing practices
- Algorithms
- Data structures
- Architectural, Enterprise and Design 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 4 years)
Practical commercial experience with:
- REST API development
- .NET Core, ASP.NET (Core, MVC, WebAPI) (more than 3 years)
- Testing frameworks (e.g. NUnit, XUnit, MSTest) (more than 2 years)
- ORM (e.g. Entity Framework, Dapper) (more than 2 years)
- RDBMS (e.g. SQL Server, MySQL/MariaDB, PostgreSQL) (more than 3 years)
- Web Servers
- AI coding assistants (Amazon Q, GitHub Copilot, Claude Code)
- Containerization (Docker)
- Integration with 3rd party solutions
- Version control systems (GIT)
- Continuous Integration tools (e.g. Gitlab Pipeline, Jenkins, TeamCity, Bamboo)
- Cloud computing platforms (AWS (must have), Microsoft Azure, Google Cloud Platform (optional))
- Infrastructure as Code using Terraform
- Deployment automation and CI/CD
Experience with:
- 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
Fluent or Upper-Intermediate English

Desirable:

Certifications on:
- Microsoft Certified Developer
- Cloud computing platforms (AWS, Microsoft Azure, GCP)
Understanding of orchestration and containerization (e.g. Kubernetes, Swarm)
Experience with building or integrating payment solutions
Knowledge in Deployment patterns
Practical commercial experience with:
- Node.JS knowledge
- Provisioning tools (e.g. 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

Personal skills:

Perform a broad range of complex technical or professional activities, in a variety of contexts
Investigate, define and resolve complex issues
Able to work in distributed cross-functional teams effectively
Influence customers and team members on the project level
May supervise others or make decisions which impact the work assigned to individuals or phases of projects
Plan, schedule and monitor your own work (and of others where applicable) competently
Have learning agility (readiness for challenge and being open to change)

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.

Senior .NET Engineer

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