Dear Consultant,We are supporting a global leader in digital payments and financial technology in hiring a Senior Java Full-Stack Developer.You will design and deliver enterprise-grade platforms used globally, collaborating with international engineering teams and contributing to high-availability systems at scale.Please send CV to ([email protected]) if you are interested. Title: Senior Java Full-Stack Developer – B2B ContractLocation: Poland ( Hybrid)Industry: Global Payments & Financial TechnologyModel: Direct B2BShift: Standard (with collaboration across global distributed teams)Start: ASAPResponsibilitiesDesign, develop, and maintain enterprise-scale applications using Java, C#, Python, Angular, React, and related technologies.Build, test, and optimize RESTful APIs (REST/JSON).Ensure compliance with security standards, coding guidelines, and best practices across the SDLC.Conduct root-cause analysis and resolve complex technical issues.Work with Jira, ServiceNow, and Splunk for ticketing, monitoring, and log analysis.Collaborate closely with distributed global teams to deliver high-quality solutions.Manage multiple concurrent tasks and meet delivery deadlines.RequirementsBachelor’s degree in Computer Science, Software Engineering, or related field.7+ years of hands-on development experience.Strong experience in Java, REST API development, and modern frontend frameworks (Angular/React).Experience with C# or Python is a plus.Strong understanding of multi-tier architecture, HTTP, REST, JSON, and web technologies.Proven experience in enterprise-scale development and API integrations.Strong analytical and problem-solving skills with the ability to conduct root-cause analysis.Excellent written and verbal communication skills.Ability to work in fast-paced, global environments and adapt to new technologies quickly.Nice to HaveExperience in the payments/fintech ecosystem.Exposure to cloud (AWS/GCP/Azure).Experience with CI/CD pipelines and containerization.Contract DetailsModel: B2BDuration: Long-term extensions expectedLocation: Poland (Remote / Hybrid)Team: Distributed global engineering teamsStart: ASAP