backend developer English-speaking jobs in Legionowo

Programme Support Consultant requires fluency in Korean and English to provide programme support for IOM Poland's activities supporting refugees and migrants. Tasks include research, drafting documentation, and partnership support.

Perform first and second level IT support, installing, diagnosing, and maintaining hardware and software. Administer anti-virus and SCCM, maintain CMDB, and resolve incidents according to SOP and SLAs.

Ensures accurate and timely delivery of payroll services, manages vendor relationships, and responds to payroll operations queries. Responsible for uploading payroll data, downloading outputs, validating payroll processing, and distributing reports. Collaborates with HR, Compensation, Benefits, and Financial Shared Services. Requires working knowledge of at least two EMEA countries' payroll, end-to-end payroll processing experience, and proficiency in English.

Senior Software Engineer to own the durable execution engine for StackAI's AI platform. Focus on runtime, scheduling, and building fault-tolerant, scalable distributed systems. Requires 5+ years in backend systems with expertise in workflow orchestration.

Business Systems Consultant needed to configure and support SAP PP/QM, MOM/MES, and related systems. 5+ years of experience with SAP PP/QM or equivalent ERP production planning module required. Familiarity with MOM/MES platforms and end-to-end production processes essential. Strong analytical and communication skills. Fluent in Chinese and English.

Test & Release Manager owns QA across mobile, API, and UI layers for customer-facing software. Define strategies, execute manual/automated testing, and collaborate with stakeholders in an Agile environment. Requires 7+ years in software testing.

Software Factory Architect to provide expert consultation and guide software engineering and architecture. Design and improve SDLC processes, review complex solution architectures, and drive engineering vision using Azure and Kubernetes.

Supply Chain Lead IT Architect needed to own the architecture for customer fulfillment, logistics, and Order-to-Cash during a large-scale business separation. Requires deep SAP ECC and logistics expertise.

Shape AI strategy and drive adoption by leading presales, solution design, and client advisory. Requires 8+ years in Data/AI consulting, strong architecture skills, and experience with major cloud platforms.

Team Lead Engineer will contribute to the Go/Python codebase, own product end-to-end, and drive architecture decisions. Responsibilities include leading on-call rotation, running team ceremonies, and managing team growth. Requires 7+ years of production software engineering experience, at least one of: low-level/systems experience, deep backend experience with microservices, or production experience with a major cloud and Kubernetes. Must have DevOps experience and 1+ year as a tech lead.

Design, develop, and implement predictive models and statistical analyses for large-scale location datasets. Collaborate with cross-functional teams to formulate data-driven solutions. Partner with software engineers and UX designers to productize models and integrate them into scalable pipelines and APIs.

Senior Java Software Engineer to design, build, and operate scalable, high-performance Java services for global sports data and betting products. Own complex technical initiatives and mentor engineers.

Marketing Packaging Process Specialist manages end-to-end packaging adaptations from design to print for European BUs. Requires 1-2 years' experience, strong project management, and proficiency in Spanish and English.

Senior SAP MM/QM Consultant supports strategic projects and internal business needs for Procurement/MM and Quality processes. Responsibilities include leading rollouts, managing change requests, and providing application support. Requires SAP MM/QM experience.

Experienced IT Application Manager to own OneStream and Group Reporting solutions. Manage application lifecycle, drive process improvements, and collaborate with Finance teams to ensure system stability and data accuracy.

Management Consultant focusing on AI and Business Transformation. Conduct analysis, drive process improvement, and support clients in applying AI solutions. Requires a relevant Bachelor's degree and fluency in Polish and English.

Designs, builds, and documents enterprise solutions using Python. Collaborates with stakeholders to clarify requirements and provide development expertise for back-end systems. Participates in code reviews and shares knowledge gained from projects. Requires 5+ years of experience in software development using Python and experience in Capital Markets or Financial Services.

Senior QA Engineer develops test plans and cases for various testing types. Responsibilities include testing applications, providing usability feedback, and writing test automation code. Requires 3+ years in QA with programming experience in Python, Java, or C#.

Controls material flow and production orders to ensure manufacturing continuity. Responsibilities include managing material flow, reporting shortages, and using SAP for production planning. Requires systematic approach and communication skills.

Lead a global mechanical engineering discipline, defining standards, methodologies, and training for design and development. Collaborate with engineers worldwide, product development teams, and business leaders to ensure delivery of high-performance, cost-effective, and reliable mechanical solutions.