python English-speaking jobs in Chorzów

Senior Java Developer needed for a dynamic team building the future of insurance. Experience with Guidewire Insurance Suite, cloud-native technologies (Azure, microservices, CI/CD), and Java programming required. Collaborative environment with a focus on innovation and continuous learning.

Develop and maintain macOS desktop applications using Swift. Collaborate with cross-functional teams to deliver a secure cloud-based solution.

Define and drive the end-to-end quality strategy for digital airline platforms. Partner with Engineering, Product, Architecture, and SRE to embed quality by design. Design and evolve test architecture and automation frameworks. Set and refine quality gates in CI/CD to enable safe, frequent releases. Lead test strategies for complex airline integrations. Ensure robust test data, environments, and observability. Provide technical leadership and mentorship to Senior QEs, SDETs, and developers. Influence product and release decisions by explaining quality risks, coverage, and trade-offs. Promote a continuous improvement culture.

Senior Fullstack JavaScript Developer will design, develop, and support business-critical software solutions within an agile, global team. Responsibilities include solving organization-wide challenges related to identity and account management, evaluating new technologies, and mentoring junior engineers. Requires 5+ years of software development experience, strong problem-solving skills, and deep knowledge of JavaScript, Node.js, TypeScript, React, and AWS.

Senior C#/.NET engineer to design, develop, and maintain backend solutions for a complex, business-critical system. Experience with large enterprise or SaaS platforms, legacy code, and complex technical problem solving required.

Leads the Creative Desk, a team responsible for developing and delivering creative solutions across digital, social, experiential, content, and campaign formats. Oversees creative strategy, quality control, team leadership, and operational excellence. Translates Mastercard's business strategy into creative direction and ensures alignment with brand, strategy, and client goals. Manages a team of Creative Leads, Senior Art Directors, Copy Leads, and Heads of Craft. Collaborates with global Leadership Team, Creative Project Managers, and Creative Operations to align creative ambition with delivery realities.

Senior Fullstack Engineer will lead a team focused on purchase protection, disputes, and refunds for international markets. Responsibilities include owning team goals, collaborating with product, design, and analytics, and fostering a culture of quality. Requires 4+ years of experience in backend systems, web app development, and large code base management.

Develop Android applications using Kotlin, Compose, Coroutines, and Hilt. Collaborate on projects with design and backend aspects. Research, develop, and contribute to project decisions.

FunCrafters seeks a .NET Developer to join the Sato Team and contribute to a new Puzzle RPG game. The role involves designing, building, and optimizing high-performance, low-latency distributed systems using C#/.NET, AWS, and related technologies. Requires 7+ years of professional software development experience in C#, fluency in Polish and English, and expertise in concurrency, asynchronous I/O, memory management, network protocols, and performance profiling.

Technical Lead Applications Engineer will design, implement, and maintain customer-facing features for SaaS web applications. Responsibilities include providing technical leadership, mentoring junior engineers, and collaborating with cross-functional teams. Requires a BS/MS in Computer Science, Mathematics, or Engineering, 7+ years of software engineering experience, and proficiency in Python, SQL, and relational databases.

DevOps Engineer needed to improve system availability, scalability, security, and durability. Will participate in Scrum, create automation, and support new tools. Requires 2+ years of experience as a DevOps Engineer with Google Cloud Platform (GCP) expertise, including observability tools, GitLab CI/CD, Docker, Kubernetes, Helm, scripting, and SQL databases.

Data Engineer needed for project designing and implementing a semantic data layer in Snowflake. Responsibilities include configuring Snowflake Views and Cortex, analyzing customer environments, and collaborating with customers to refine data semantics. Requires 4+ years of Data Engineering experience, Snowflake and dbt proficiency, and Power BI knowledge.

Senior Security Engineer II will lead incident detection, response, and automation. Responsibilities include analyzing security telemetry, coordinating incident response, and automating workflows using Python. Requires 10 years of SOC experience, SIEM expertise, strong Python skills, and knowledge of Incident Response and MITRE ATT&CK. Experience with EDR platforms and relevant certifications are a plus.

Build, evolve, and stabilize web platforms using Node.js and JavaScript. Design and maintain backend and frontend architecture, ensuring performance, scalability, and reliability. Deliver new features end-to-end, optimize applications, and write unit, integration, and end-to-end tests.

Implement, maintain, and expand firewall infrastructures using Fortinet technologies. Responsible for deployment and support of switches and access points. Advise customers on network architecture and implement tailored solutions. Resolve complex technical issues and handle basic Azure Networking.

Backend software engineer to join the exchange team and build a mobile advertising platform. Responsibilities include designing, implementing, and testing functionality, transitioning the system from Scala to Java, and collaborating with other teams. Requires 6+ years of software engineering experience, 1+ year of Scala, and 2+ years of Java experience.

Experienced Bluetooth Low Energy Expert needed for freelance role. Strong BLE, IoT, and mobile development (iOS, Android, or Flutter) skills required. Proven experience implementing BLE solutions in real projects. Fluent English (B2).

Customer Success Manager for enterprise clients. Guide clients from onboarding to long-term success, unlocking the full power of Surfer. Track customer health, identify upsell opportunities, and deliver value-driven onboarding and training. 5+ years of experience in Customer Success, Account Management, or a similar client-facing SaaS role required. Native-level English required.

Experienced PHP Developer needed to build and maintain high-performance, scalable products. Collaborate with team members on coding, code review, and testing. Contribute to the development roadmap and participate in SCRUM meetings.

QA Automation Engineer needed to design, develop, and maintain automated test frameworks and scripts in Java. Experience with Selenium, Cucumber, JUnit, and Maven required.