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Ciklum is looking for a Senior Software Engineer (Unique) 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 Software Engineer (Unique), become a part of a cross-functional development team engineering experiences of tomorrow. On behalf of Ciklum Digital Engineering Team, we are looking for a Senior Java Developer to join the team on a full-time basis. You will join a highly motivated team and will be working on a modern solution for our existing client. We are looking for technology experts who want to make an impact on new business by applying best practices and taking ownership.

Responsibilities:

• Back-end development to meet customer’s business needs and implement components
  according to modern software development environment
• Taking part in the decision-making process in application code design, solution development, 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 5 years
• Strong knowledge in Computer Science, Computing Theory:
• Paradigm & Principles (OOP, SOLID)
• Database theory (RDBMS)
• Code testing practices
• Algorithms
• Data structures
• Design Patterns
• Understanding of network interactions
• protocols
• conventions (e.g., REST, RPC);
• authentication and authorization flows
• standards and practices (e.g., OAuth, JWT)
• Strong knowledge and experience in Java (more than 5 years)
• Knowledge of Kotlin / Reactive programming experience (Spring Boot)
• Good knowledge and experience in Golang
• Experience with REST API design and development
• Experience with Microservices architecture
• Event-driven architecture fundamental
• Experience building high-traffic/high-load distributed systems
• Experience with Synchronous/Asynchronous API Orchestration
• Proven expertise in performance optimization and scalability
• Experience analyzing production performance and latency issues
• Experience with resilience patterns (circuit breakers, retries, timeouts)
• Understanding of Domain Driven Design
• Big Plus: Ops insights, comfortable with Linux, command lines, Kubernetes
• Testing frameworks (e.g., JUnit, PowerMock, WiresMock)
• ORM (e.g., Hibernate)
• RDBMS (e.g MySQL/MariaDB, PostgreSQL, Oracle)
• Web Servers
• Version control systems (GIT)
• Docker
• Continuous Integration tools (e.g. Gitlab Pipeline, Jenkins, TeamCity, Bamboo)
• Builders
• Plus: Node.js / Typescript experience (for AWS Lambda)
• Plus: AWS experience (Aurora, Lambda, Step Functions, etc.)
• Experience with:
• Agile software processes and technologies
• Code Review process
• Refactoring process
• Upper-Intermediate English
• Desirable
• Knowledge in:
• TDD, BDD
• Architectural, Enterprise Patterns
• Security patterns, Common attacks types (OWASP)
• Deployment patterns
• Practical commercial experience with
• Key-value storages (e.g. Redis, Memcached)
• Messaging systems (e.g. RabbitMQ, Apache Kafka, ActiveMQ, AWS SQS, Azure
  Service Bus, Google Pub/Sub)
• Cloud solutions (e.g. AWS, Google Cloud Platform, Microsoft Azure)
• Serverless architecture
• Integration with 3rd party solutions
• NoSQL (e.g. MongoDB, ElasticSearch, CouchDB)
• Search Engines (e.g. ElasticSearch, Azure Search, Apache Solr)
• Quality tools (e.g. SonarQube)

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.

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