Senior Java Developer for Ciklum Digital

Kyiv, Amosova, Ukraine


Modulr is one of the UKs leading fintech scale-ups and the #2 fastest growing technology company in the UK, according to D&B. We are looking for a number of software engineers to join our rapidly expanding technology team. You will be part of a scaling business in a high-quality team that is working on new products and features while solving interesting technical challenges. In this role you will work in a cross- functional co-located team who are asked to solve a problem, rather than handed a task to do. This is an excellent opportunity to work in a high-growth environment with a fast- paced and collaborative culture where you will have access to the latest technologies.

Modulr is a vibrant FinTech scale-up who are rethinking business payments. We automate payment flows, embed payments within business platforms, and enable customers to build new payment products and services giving them a modern alternative to traditional banks. Our customers use a simple RESTful API which has processed over 70 million transactions with a value of over £60 billion to date.

We have attracted over £38 million in investment funding including £10m from Banking and Competition Remedies fund as well as venture capital from several firms including PayPal Ventures. Modulr was ranked 18th on LinkedIn’s 2019 Top Start-ups List in UK and we have won multiple awards and listing including Emerging Payments and FinTech50.

We have 9 teams in product and technology who deliver work in an Agile fashion. We use a mix of Agile methods and we don’t favour a particular one; we’d rather be open- minded and honest with what works for us. We prefer self-organising teams who work together to maximise the value we create.

Read more about the client


On behalf of Ciklum Digital, we are looking for a Senior Java Developer to join our team on a full-time basis.

You will join a highly motivated team and will be working on a modern solution for our client. We are looking for technology experts who want to make an impact on new business by applying best practices and taking ownership.


  • 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.



  • 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;
    • 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 Java  (ideally experience with Java 11)  (more than 3 years);
  • Practical commercial experience with:
    • REST API development;
    • Web application frameworks (e.g. Spring Boot Framework) (more than 2 years);
    • Testing frameworks (e.g.e.g. JUnit, PowerMock, WiresMock) (more than 2 years);
    • Java related Open Source technologies, such as Spring and Hibernate;
    • RDBMS (e.g MySQL/MariaDB, PostgreSQL, Oracle) (more than 2 years);
    • Key-value storages (e.g. Redis, Memcached);
    • Messaging systems (e.g. RabbitMQ, Apache Kafka, Active MQ, AWS SQS, Azure Service Bus, Google Pub/Sub);
    • Web Servers;
    • Version control systems (GIT);
    • Cloud computing platforms (e.g. AWS, Google Cloud Platform, Microsoft Azure);
    • Docker;
    • Continuous Integration tools (e.g. Gitlab Pipeline, Jenkins, TeamCity, Bamboo);
    • Builders;
    • Experience of micro-services using SpringBoot or similar;
    • Strong understanding of OOP and design patterns;

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;
    • Experience of building a high-performance services-based platform;
  • Fluent or Upper-Intermediate English is a must. ;



  • Certifications on:
    • Java;
    • Spring Frameworks;
    • Cloud computing platforms (AWS, GCP, Microsoft Azure);
  • Understanding of orchestration and containerisation (e.g. Kubernetes, Swarm);
  • Knowledge in Deployment patterns;
  • Practical commercial experience with:
    • Serverless architecture;
    • Integration with 3rd party solutions;
    • NoSQL (e.g. MongoDB, ElasticSearch, CouchDB);
    • Experience with Search Engines (e.g. ElasticSearch, Azure Search, Apache Solr);
    • Provisioning tools (e.g. Terraform, Ansible);
    • Quality tools (e.g. SonarQube);

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 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

  • Career growth opportunities;
  • Realization of your innovative ideas in building new Ciklum Solutions and Services;
  • Friendly collaborative teams and an enjoyable working environment;
  • Professional skills development and training programs;
  • Variety of knowledge sharing, training and self-development opportunities;
  • State of the art, cool, centrally located offices with a warm atmosphere which creates really good working conditions.