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Senior Engineer, Software Poland, Warsaw Jobs

22 Job Offers

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Senior Software QA Engineer
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Join Inetum Polska as a Senior Software QA Engineer in Warsaw. Design and implement automated test strategies for web apps, APIs, and microservices using Python, Java, or JavaScript. Enjoy a hybrid model, flexible hours, and a personalized benefits cafeteria system while driving quality in a glob...
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Poland , Warsaw
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Inetum
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Senior Python Software Engineer
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Join our Warsaw team as a Senior Python Software Engineer & Consultant. This hybrid role requires 5+ years of Python expertise, Python Agent knowledge, and strong B2 communication skills in Polish and English. Enjoy flexible hours, a cafeteria system, mentoring, and a supportive culture while dri...
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Poland , Warsaw
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Inetum
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Senior Software QA Engineer
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Join Inetum Polska in Warsaw as a Senior Software QA Engineer. Design and automate tests with Playwright/JavaScript for a key telecom e-commerce platform. Enjoy a hybrid model, flexible hours, and strong development support in an inclusive culture.
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Poland , Warsaw
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Inetum
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Senior .Net Software Engineer
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Join our Warsaw team as a Senior .NET Software Engineer. Develop a custom CRM and back-end systems using C#, .NET, and SQL for a global telecom client. Enjoy a hybrid model, flexible hours, and strong mentorship in a supportive culture.
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Poland , Warsaw
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Inetum
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Senior JVM Software Engineer
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Seeking a Senior JVM Software Engineer in Warsaw for a hybrid role. Drive feature development (70% BE/30% FE) using Java, Spring Boot, React, and PostgreSQL. Enjoy flexible hours, a cafeteria system, and a supportive culture with technical mentoring. Join a telecom project requiring 4+ years of f...
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Poland , Warsaw
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Inetum
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Senior iOS Software Engineer
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Join our Warsaw team as a Senior iOS Software Engineer, also leveraging Android expertise. Develop innovative mobile solutions using Swift, Kotlin, and modern architectures like MVVM and SwiftUI. Enjoy a hybrid model, flexible hours, and a rich benefits package including mentoring and a cafeteria...
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Poland , Warsaw
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Inetum
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Senior Python Software Engineer
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Join Inetum Polska as a Senior Python Software Engineer in Warsaw. Develop AI-driven microservices with Python, FastAPI, and PostgreSQL on Azure. Enjoy a hybrid model (3 days office/week), flexible hours, and strong mentorship in an innovative team.
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Poland , Warsaw
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Inetum
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Senior Java Software Engineer
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Join our Warsaw team as a Senior Java Engineer. Lead the migration of JBoss systems to a modern Spring Boot cloud environment using Java 17+, Camunda, and Kubernetes. Enjoy a hybrid model, flexible hours, and a rich benefits package including mentoring and a team-building budget. Apply your exper...
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Poland , Warsaw
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Inetum
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Senior JVM Software Engineer
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Join a leading German telecom & IT innovator at their new European Tech Center in Warsaw. As a Senior JVM Software Engineer, you'll develop the Sales Cockpit backend using Java, Spring Boot, and REST APIs. Enjoy a hybrid model, flexible hours, and benefits like a cafeteria system and revenue shar...
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Poland , Warsaw
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Inetum
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Senior JVM Software Engineer
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Join our Warsaw team as a Senior JVM Software Engineer. Lead the upgrade to Spring Boot 3.x and build new payment data systems using Java 21, Spring, and Hibernate. Enjoy a hybrid model, flexible hours, and a supportive culture with tailored mentoring. Fluent English and Polish are required.
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Poland , Warsaw
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Inetum
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Senior Fullstack Software Engineer
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Join our Warsaw team as a Senior Fullstack Software Engineer. Utilize your expertise in Java, Spring Boot, JavaScript, and React to build robust solutions in a hybrid environment. Enjoy flexible hours, a cafeteria benefits system, and dedicated technical mentoring while working on impactful proje...
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Poland , Warsaw
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Inetum
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Senior iOS Software Engineer
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Join our Warsaw team as a Senior iOS Software Engineer. You'll develop in Swift and SwiftUI, with cross-platform work in Kotlin/Compose. Enjoy a hybrid model, flexible hours, and a rich benefits package including a cafeteria system. Collaborate in a supportive culture that values technical growth...
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Poland , Warsaw
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Inetum
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Senior Software Engineer (JVM/Kotlin)
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Lead the architectural transformation from monolith to modular systems as a Senior Kotlin Engineer in Warsaw. Apply your JVM, Spring, and DDD expertise to scale core insurance platforms. Enjoy share options, a learning budget, and modern benefits in this pivotal role.
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Poland , Warsaw
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hyperexponential
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Senior Software Engineer
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Join our Warsaw team as a Senior Software Engineer. You will design and deploy enterprise-grade software using Python, C#/.NET, and ReactJS. A key focus is solving complex ESRI platform mapping problems to enhance telecom network management tools. This role offers ownership from architecture to d...
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Poland , Warsaw
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SSP Innovations
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Senior Software Development Engineer in Test
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Lead the quality foundation as a Senior SDET in Warsaw. Architect scalable test frameworks and CI/CD pipelines to empower engineering teams. Enjoy a flexible four-day work week and remote allowance while building tools that make quality the path of least resistance.
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Poland , Warsaw
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Awin Global
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Go/Java Senior Software Engineer
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Join Citi in Warsaw as a Senior Go/Java Software Engineer. You will build secure developer tools and safeguard the software supply chain using Go, Java, and cloud-native tech (e.g., Docker, Kubernetes, AWS). Collaborate in agile teams to implement modern CI/CD and security-first development. We o...
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Poland , Warsaw
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Citi
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Senior Software Engineer - GO
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Join our Warsaw team as a Senior Software Engineer - GO. You will build internal tools to automate network operations within our Software Defined Networking (SDN) team. We seek a Go expert with DevOps, CI/CD, and Infrastructure as Code (Terraform) experience. Embrace an automation-first mentality...
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Poland , Warsaw
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Mastercard
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Senior Software Engineer
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Join Sportradar's Odds Product Division in Warsaw as a Senior Software Engineer. Develop high-performance, cloud-first services using Java, TDD, and AWS for real-time sports data. Thrive in a collaborative, agile environment that values clean code, innovation, and work-life balance. Utilize moder...
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Poland , Warsaw
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Sportradar
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Senior Software Engineer
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Join Sportradar's Odds Division in Warsaw as a Senior Software Engineer. Build high-performance, cloud-first services using Java/C++, AWS, and Kubernetes on real-time sports data. We value engineering quality, a test-first mindset, and offer a collaborative, global environment with true work-life...
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Poland , Warsaw
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Sportradar
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Software Senior Principal Engineer, Data Path Engineering
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Join Dell in Warsaw as a Senior Principal Software Engineer in Data Path Engineering. Design and develop cutting-edge Big Data storage systems using C/C++ and Python. Leverage your 10+ years of experience in complex, high-performance software and distributed systems. Enjoy top benefits like priva...
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Poland , Warsaw
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Dell
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Explore a world of opportunity with Senior Engineer, Software jobs. A Senior Software Engineer is a pivotal, experienced professional who architects, builds, and maintains complex, high-impact software systems. This role represents a significant step beyond mid-level positions, emphasizing technical leadership, strategic decision-making, and deep ownership over critical components of a product or platform. Professionals in these jobs are entrusted with translating high-level business requirements into robust, scalable, and efficient technical solutions, often mentoring junior engineers and shaping the team's technical direction. The typical responsibilities of a Senior Software Engineer are comprehensive and demand a high degree of accountability. They are commonly responsible for the end-to-end ownership of major features or entire services, from design and implementation through testing, deployment, and ongoing optimization. This involves writing high-quality, maintainable code, conducting thorough code reviews, and advocating for best practices in software development. A key aspect of the role is solving complex, often ambiguous problems, requiring innovative thinking to improve system design, performance, and reliability. Senior engineers also frequently analyze and debug intricate production issues, provide technical guidance to cross-functional partners like product managers, and contribute to architectural discussions that define the future of the technology stack. To excel in Senior Engineer, Software jobs, a specific set of skills and experience is typically required. A strong foundation in computer science fundamentals, data structures, algorithms, and system design is non-negotiable. Candidates usually possess 5+ years of professional software development experience, with deep proficiency in one or more programming languages such as Java, Python, C++, JavaScript/TypeScript, or Go. Expertise in modern development paradigms is essential, including cloud-native architectures (AWS, Azure, GCP), microservices, containerization (Docker, Kubernetes), and both SQL and NoSQL databases. Beyond technical prowess, senior roles demand excellent problem-solving and analytical abilities, the capacity to design systems for scale and resilience, and strong communication skills to articulate technical concepts to diverse audiences. A proven ability to work autonomously, drive projects to completion, and collaborate effectively within a team are the hallmarks of a successful candidate for these advanced software engineering jobs. Ultimately, Senior Engineer, Software jobs are for those who are passionate about technical excellence and impact. These positions offer the chance to work on challenging problems, influence product strategy, and build systems that serve millions of users. Whether specializing in backend distributed systems, full-stack applications, embedded systems, or cloud infrastructure, senior software engineers are the cornerstone of innovation and operational stability in the modern digital landscape.

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