Senior .NET Engineer

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.
Originally posted on Himalayas