backend developer English-speaking jobs in Świdnica

Junior Fund Accountant supports commingled investment portfolios by executing NAV tasks like transactions and corporate actions. Requires a Finance/Accounting degree or equivalent experience and C1 English fluency.

Tender & Contract Operations Intern supports the Tender Team in the bidding process, validating third-party components and assisting with service contract registration. Requires fluency in English and Polish, and at least 3rd-year university study.

Backend Software Engineer to build and maintain PHP-based systems for distributed services. Requires 2+ years in PHP, strong OOP skills, and experience with secure APIs and databases.

Senior Account Executive drives customer success and revenue growth by managing existing customer portfolios. Requires fluency in English and Russian, strong relationship-building skills, and experience in account management.

Lead end-to-end implementation of Payments and Core Banking solutions across European markets. Act as primary delivery contact, ensuring quality from design through go-live. Requires payments domain expertise, client-facing skills, and knowledge of cloud-native platforms.

AI Technical Lead owns technical delivery of production-grade AI systems on a Microsoft-first stack. This role sets engineering direction for designing, building, and operating enterprise AI capabilities.

Design, train, and optimize classical and deep-learning models for business use cases. Build and maintain end-to-end ML pipelines, ensuring robustness and performance in production environments. Requires strong Python skills and experience with ML platforms.

Senior Software Engineer to drive design and development for the Observability Streams backend, including Logstash in Java/JRuby and core services in Golang. Contributes to the OpenTelemetry Collector and solves distributed systems problems at scale.

Are you looking for a career move that will put you at the heart of a global financial institution? By Joining Citi, you will become part of a global organization whose mission is to serve as a trusted partner to our clients by responsibly providing financial services that enable growth and economic progress. Team/Role Overview Trustee Team is a part of the Markets and Securities Services.

Contribute to CRD/Alpha Platform development in an agile environment. Junior engineers will assist with analysis, design, development, and testing of complex software enhancements.

System Test Engineer Intern role ensuring quality of P25 mobile communication infrastructure. Responsibilities include executing manual system tests, root cause analysis, and validating IT network solutions. Requires knowledge of software test methodologies and IT infrastructure.

Design, develop, and maintain secure, scalable backend services and cloud-native applications on GCP. Focus on Python, Node.js, GKE, Terraform, and Zero Trust models.

Senior Test Automation Engineer supporting Master Data Management solutions. Focus on Java 17+, REST/SOAP API testing, database validation, and backend process automation. Develop scalable frameworks using Clean Code and CI/CD.

Senior Data Scientist/Analyst applies data analysis and GenAI to airline commercial domains. Responsibilities include ML modeling, BI development in Tableau/Power BI, and driving efficiency. Requires 3+ years experience with Python, SQL, and ML model validation.

Senior Data Scientist to improve large-scale analytics and detection systems in a cybersecurity product ecosystem. Focus on simplifying complex logic, investigating data flows, and optimizing production systems using Python and SQL.

Experienced IT Project Manager needed to lead technology projects from initiation to delivery. Responsibilities include defining scope, managing risks, coordinating cross-functional teams, and ensuring on-time, on-budget delivery. Fluent English required.

Senior Security Engineer to build product security for a global payments platform. Responsibilities include threat modeling, security reviews, building automation, and supporting compliance like SOC2/PCI. Requires experience in product/application security and coding ability.

Lead Software Engineer to define technical direction, solve complex challenges, and raise engineering standards. Responsibilities include designing distributed systems, building CI/CD, and mentoring peers using C# and Azure.

Lead Consultant/Project Manager to guide enterprise customers in IT Operations and implementation of Veeva Quality Cloud. Manage multi-year global programs, acting as primary liaison and mentoring teams. Requires 8+ years in IT Project/Consulting with strong technical affinity.

Develop and implement corporate sales strategy across the dealer network. Manage fleet sales targets, lead negotiations with key partners, and lead the Fleet Sales Team. Requires business/sales experience and strong leadership.