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Една от всички 777 обяви за Backend Development в София

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Senior Java Developer

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    Ciklum is looking for a Senior Java Developer to join our team full-time in Bulgaria.

    We are a leading global product engineering and digital services company that unites 4000+ seasoned professionals globally on various projects in healthcare, fintech, travel, sportswear, entertainment, and security. Ciklum delivers high-impact technology solutions to Fortune 500 and fast-growing organisations worldwide.

    Our recently opened delivery hub in Sofia brings exciting global opportunities for Bulgarian tech talents.

    About the role:

    As a Senior Java Developer, become a part of a cross-functional development team working for Our Client.

    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.

    About the Client:

    Our client is a sports betting company, who would like to manage their content with a “Plug and Play” approach. Project team consists of 200+ engineers working on different enhancements of our sport betting products. The project uses the latest stable technologies like Java, React and others.


    • 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


    • 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)
    • Practical commercial experience with:
    • REST API development
    • Web application frameworks (e.g. Spring Boot Framework) (more than 3 years)
    • Testing frameworks (e.g.e.g. JUnit, PowerMock, WiresMock) (more than 3 years)
    • ORM (e.g. Hibernate) (more than 1 years)
    • RDBMS (e.g MySQL/MariaDB, PostgreSQL, Oracle) (more than 3 years)
    • Web Servers
    • Version control systems (GIT)
    • Docker
    • Continuous Integration tools (e.g. Gitlab Pipeline, Jenkins, TeamCity, Bamboo)
    • Builders
    • Experience with:
    • Cloud solutions (e.g. AWS, Google Cloud Platform, Microsoft Azure)
    • Agile software processes and technologies
    • Code Review process
    • Refactoring process
    • Upper-Intermediate English
    • Brief familiarity with Frontend development:
    • JavaScript
    • Mainstream frameworks or stacks (React)


    • Knowledge in:
    • TDD, BDD
    • Architectural, Enterprise Patterns
    • Security patterns, Common attacks types (OWASP)
    • Deployment patterns
    • Experience with:
    • Troubleshooting, profiling and debugging applications
    • Microservices
    • Practical commercial experience with:
    • Key-value storages (e.g. Redis, Memcached)
    • Messaging systems (e.g. RabbitMQ, Apache Kafka, Active MQ, AWS SQS, Azure Service Bus, Google Pub/Sub)
    • 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?

    Care: your health is our priority

    • Comprehensive company-paid medical insurance
    • Multisport cards
    • Financial and legal consultations

    Tailored education path: boost your skills and knowledge

    • Regular internal events (meetups, conferences, workshops)
    • Udemy licence
    • Language courses
    • Company-paid certifications

    Growth environment: we love to see people growing

    • Share your experience, internally and externally
    • Level up your expertise with a community of skilled professionals, locally and globally

    Flexibility: define your working routine

    • Choose how you want to work – a 100% remote or on-site in our office at the heart of Sofia
    • Own your schedule – you are the one to decide when to start your working day
    • Just don’t miss your regular team stand-up

    Opportunities: we always find the best options for our talent

    • Our Internal Mobility Program helps change a project if needed to help you grow
    • Excel professionally and fulfil your potential

    Global impact: do what matters

    • Work on large-scale projects that redefine industries
    • Cooperate with international and fast-growing clients

    Welcoming environment: feel at ease

    • Get empowered with a friendly team
    • Open-door policy
    • Informal atmosphere within the company and regular team-building events

    About us:

    Ciklum entered Bulgaria in 2022 to expand its presence in Eastern Europe and is ready to welcome bright talents.

    Be a part of a big story created right now – let’s grow our delivery centre in Bulgaria together. Boost your skills and knowledge: create and innovate with like-minded professionals as a part of a global company with a local spirit and start-up soul.

    Be bold, not bored!

    Interested already? We would love to get to know you! Submit your application. We can’t wait to see you at Ciklum.