Senior Java developer

Senior Java Developer

We are looking for a Senior Java Developer to join our client — a leader in the payment sector — and contribute to shaping innovative, large-scale payment solutions.

📌 Contract

B2B

📍 Work mode

Hybrid, 2-3 days/week from Warsaw office

Qualifications

Basic Qualifications

• Minimum 10 years of commercial experience developing web applications using the Java/Spring stack

• Team lead experience (requirements handling, decomposing user stories, managing middle/junior engineers, understanding scrum team roles, agile development methodology)

• DevOps experience (creating and improving CI/CD pipelines in cloud environments, networking, Unix, understanding k8s and docker registries)

• Knowledge of Apache Kafka is required. Candidates must have hands-on experience integrating Java applications with Kafka for real-time data processing.

• Distributed systems design

• Software and solution architecture experience

• Refactoring, performance, and memory tuning

• Build systems (Maven or Gradle): dependency management, build lifecycle, release and version management

• Git branching model (git flow, GitHub flow)

• Frameworks: Spring, ORM, messaging, security, batch, integration

• Databases: consistency models, SQL, distributed transactions

• Microservice architecture patterns and best practices, communication patterns: HTTP, messaging, gRPC, CQRS

• API design best practices including API First

• Algorithms and problem-solving skills

Role Responsibilities:

• Design code and systems that impact billions globally while influencing internal standards for scalability, security, and reusability

• Collaborate across teams to produce design artifacts and develop best-in-class software solutions for various technical offerings

• Actively contribute to product quality, service technology, and innovative business workflows within agile squads

• Build robust and scalable products tailored for diverse customers including end-user merchants, B2B, and government solutions

• Harness cutting-edge technologies to develop the future of Payment Services, Transaction Platforms, Real-Time Payments, and Buy Now Pay Later capabilities

• Make a difference globally and locally through mentorship and continuous learning

• Demonstrate technical expertise to understand and implement system requirements

• Develop and communicate solution strategies that enhance interface design and usability across multiple projects

• Apply programming proficiency (e.g., HTML, C++, Java) to write code aligned with technical and modification requests

• Collaborate on piloting new technologies and features that improve e-commerce user experience

• Investigate simple bugs and use debugging tools to test and verify assumptions

Required skills: 

• Energy & Experience: A curious mindset with a passion for emerging technologies and challenging global-scale projects

• Challenger Mentality: Comfort with pushing boundaries and exploring unconventional technical solutions

• Language Expertise: Skilled in one or more general-purpose programming languages (e.g., Java, C#, C++)

• Builder: Experience creating and deploying modern services and web applications with a focus on quality and scalability

• Learner: Motivated to continuously explore new technologies such as Angular, React, Kubernetes, Docker, etc.

• Collaborator: Proven success working with cross-functional teams including Product, Testing, DevOps, and Agile/Scrum partners

📩 If you’re interested and meet the qualifications, please send your CV to Alina Pchelnikova

at alina.pchelnikova@dcvtechnologies.co.uk