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Builds and maintains high-scale backend microservices for Allegro’s checkout and purchase systems using Java, Kotlin, Spring, and MongoDB in a cloud-native environment.
Leads backend development in Java for travel platforms, designing cloud-native, scalable APIs and mentoring peers.
Senior C# developer building high-performance .NET services for a global fintech team, migrating systems to event-driven architecture and integrating AI-driven development.
Build and maintain high-load treasury applications: a JavaScript SPA frontend and .NET backend services with ASP.NET Core, focusing on REST APIs, pagination, and scalable architecture.
Builds customer-facing web apps using JavaScript/TypeScript, React, and Redux in an agile team that practices TDD and code reviews.
Builds and maintains React/Next.js interfaces for a large media portal and CMS ecosystem, following clean-code practices and participating in full software development lifecycle.
Analyze finance, operations, and workforce data to drive Aon’s multi-year operating model transformation using Excel, Power BI, and SQL.
Senior Data Analyst builds and maintains data pipelines, dashboards, and ETL processes to deliver risk insights and audit quality improvements using Python, SQL, Power BI, and AI-driven tools.
Build and maintain Power BI dashboards and ETL pipelines to deliver sales and pipeline insights for Aon’s global Construction & Infrastructure insurance specialty using CRM, financial, and production data.
Lead secure software engineering and AI-driven AppSec tooling at Sabre, integrating Java-based security tools into CI/CD pipelines and automating vulnerability triage with LLM agents.
Senior Software Engineer to design and build billing capabilities for a cloud-commerce platform, using Python APIs, PostgreSQL, and AI integrations, while collaborating with an international team.
Build and configure SAP Convergent Mediation for billing systems, integrating data flows and writing custom extensions in Java or Python.
Lead the design and delivery of scalable, secure software architectures for enterprise clients, leveraging Java, Azure, Kafka, and Kubernetes while integrating legacy systems and modern cloud-native solutions.
Build secure backend services in Java/Kotlin with Spring and AWS for a fintech investment platform, focusing on authentication, KYC, GDPR compliance, and client integrations.
Build and maintain automation services, APIs, and data schemas for global clients using Java, JavaScript, or Python in a hybrid Kraków office.
Build and maintain full-stack Java/Angular applications for banking projects, working hybrid in Warsaw and deploying to Kubernetes.
Build and scale Box’s core data services, ensuring near-real-time access and reliability for millions of requests per second using Scala/Java, MySQL, Pub/Sub, and BigQuery.
Lead the architecture and build of Banank’s next-gen real-time data platform for digital banking, enabling low-latency streaming pipelines, Customer 360 models, and AI-ready analytics across operational and analytical workloads.
Builds and maintains C#/.NET web and desktop apps (WPF, microservices) while collaborating on architecture and code reviews.
Maintain and automate multi-cloud (AWS, Azure incl. China) infrastructure for edtech products, deploy with Kubernetes/Terraform, and ensure 24/7 reliability and security while supporting developers.
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