backend developer English-speaking jobs in Leszno

Lead Engineer responsible for specifying, designing, and optimizing oil supply systems for large gear systems. Develops new systems, performs risk assessments, and adapts existing systems to customer needs. Collaborates with internal and external teams, generates technical documentation, and provides technical support. Requires a mechanical engineering background with expertise in lubrication, hydraulics, and instrumentation.

Senior Product Engineer to build and ship AI features for a B2B customer support platform. Responsibilities include designing backend services, building APIs, and driving system scalability. Experience with LLM orchestration, API optimization, and AI observability is required.

Senior Process Engineer will support global process standardization initiatives, drive Engineering Change processes, and define/maintain global SOPs. Requires 4+ years of experience in manufacturing/process engineering within a regulated industry, strong understanding of manufacturing processes, and experience with systems like SAP, MES, and PLM.

Finance Specialist will manage end-to-end accounting, compliance, and reporting processes for assigned legal entities. Ensures completeness, accuracy, and timeliness of accounting records and reported figures while maintaining compliance with group and local requirements.

Develop and manage partner relationships for specialty grocery stores, ensuring smooth onboarding and operational excellence. Negotiate and sign deals, track profitability, and manage product integrations and co-marketing efforts. Analyze market trends and identify growth opportunities.

Technical Support Engineer needed for a top navigational app. Must be a high-level English speaker with 2+ years in Technical Support or 1+ year in manual QA. Familiarity with bug tracking systems and test management tools is required.

Designs, executes, and reports on adversary simulation scenarios to test security controls. Performs penetration tests on various systems and applications to identify vulnerabilities. Collaborates with teams to develop remediation suggestions and investigate findings. Requires a bachelor's degree or equivalent experience, 2 years of security testing experience, and scripting skills.

Own end-to-end marketing for Databoostr, a data sharing platform for industrial and automotive companies. Develop and execute B2B growth marketing initiatives, including ABM campaigns, content marketing, and digital channel management. Translate technical value into business language and build campaigns that generate pipeline.

The Statutory Finance Lead oversees audit coordination for multiple global markets, acting as the primary point of contact for internal and external auditors. Responsibilities include managing audit calendars, leading audit-related meetings, and driving timely execution of the audit process.

Application Compliance Project Manager to support the definition, coordination, and execution of the global application compliance roadmap. Will work closely with the Head of Global IT Compliance and act as a key interface between Business Solution Teams, Global IT Governance, IRM, ServiceNow, and delivery teams.

The Logistician Technician provides end-to-end logistics and asset management support for NCI Agency CIS Assets. Responsibilities include asset accountability, inventory management, and compliance with Agency Directives. Requires familiarity with NATO applications and systems, knowledge of NATO organizations, and prior logistics experience.

SAP Authorization Consultant with German fluency required for innovative S/4HANA compliance projects. Analyze customer situations, design authorization concepts, and implement them in accordance with Segregation of Duties (SoD). Support all project phases, from conception to rollout and support.

Manage daily warranty claims, verify policies and procedures, and check claim integrity. Communicate with dealers and customers, primarily in writing.

Experienced Java SRE Engineer needed for a 6-month project (extendable) supporting a large-scale, globally distributed payments platform. Focus on performance, security, and scalability.

Lead integration workstream in S/4HANA implementation projects. Design and implement integrations using SAP BTP Integration Suite (CPI). Build API-first and event-driven integration architectures.

Network Field Technician will perform server deployment and maintenance in data centers. Tasks include installing, un-racking, and replacing servers and network equipment, cabling, diagnosing hardware issues, and managing hardware assets.

Junior Software Engineer will join teams working on marketplace development. The role focuses on building reliable, scalable systems with real human impact.

This role combines business development and team leadership for Arcadis' Environmental Advisory & Compliance services in Poland. The Business Development Lead will drive revenue growth, identify and convert business opportunities, and manage a team of consultants.

Build and evolve backend services for high-traffic gaming platforms using .NET / .NET Core. Solid experience with C#, ASP.NET MVC, and Web API required.

Develop and maintain Python-based applications and tools supporting AML solutions. Implement, optimize, and deploy machine learning models to enhance product capabilities. Collaborate with data scientists and teams to integrate models into production systems.