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Senior Software Engineer 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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Senior Software Engineer jobs represent a pivotal career stage where technical expertise converges with leadership and strategic influence. These professionals are the cornerstone of software development teams, responsible for designing, building, and maintaining complex, scalable systems that power modern businesses. Moving beyond foundational coding tasks, senior engineers architect solutions, make critical technology decisions, and mentor others, ensuring both product excellence and team growth. Typically, individuals in these roles undertake a broad spectrum of responsibilities. They are deeply involved in the full software development lifecycle, from requirement analysis and system design to implementation, testing, deployment, and ongoing optimization. A core duty is architectural design, where they choose appropriate technologies, design patterns, and frameworks to create robust, secure, and scalable applications. This often involves building backend services, APIs (RESTful or GraphQL), and dynamic frontend interfaces. They ensure code quality through rigorous practices like code reviews, writing comprehensive tests (unit, integration), and establishing CI/CD pipelines. Furthermore, senior software engineers frequently collaborate with cross-functional partners, including product managers, designers, and DevOps specialists, to translate business needs into technical specifications and seamless user experiences. The skill set for these jobs is both deep and wide. Proficiency in one or more core programming languages (such as Python, Java, JavaScript/TypeScript, C#, or Go) is essential, alongside expertise in relevant frameworks and libraries for both frontend (e.g., React, Angular) and backend development. A strong grasp of data structures, algorithms, and system design principles is mandatory. Experience with cloud platforms (AWS, Azure, GCP) and their services for computing, storage, and networking is increasingly standard. Knowledge of database technologies, encompassing both SQL (PostgreSQL, MySQL) and NoSQL (MongoDB, DynamoDB) systems, is crucial. Beyond technical acumen, senior roles demand excellent problem-solving abilities to debug complex issues and optimize performance. Soft skills are equally important; effective communication to articulate technical concepts to non-technical stakeholders, project leadership, and the ability to mentor junior developers are key differentiators. Common requirements for Senior Software Engineer jobs usually include a bachelor’s degree in computer science or a related field, although substantial equivalent experience is often acceptable. Most positions seek candidates with 5+ years of professional software development experience, demonstrating a proven track record of shipping and maintaining production systems. Employers look for individuals who exhibit end-to-end ownership of projects, a passion for continuous learning in a rapidly evolving field, and a strategic mindset focused on long-term maintainability and business impact. For those seeking to lead through technology and drive meaningful innovation, senior software engineer jobs offer a challenging and rewarding career path at the heart of the digital world.

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