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Senior Software BE Engineer Poland Jobs

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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 Full Stack Software Engineer
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Join Atlassian in Gdańsk as a Senior Full Stack Engineer. You will enhance Jira Align, building scalable features for enterprise customers using .NET/C#, React, and cloud tech. Enjoy a global team, health coverage, and paid volunteer days in this impactful role.
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Poland , Gdańsk
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244800.00 - 326400.00 PLN / Year
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Atlassian
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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 Kraków team as a Senior JVM Software Engineer. Design robust, scalable backend solutions using Java 8, Spring Boot, and Microservices. Enjoy a hybrid model, flexible hours, and a supportive culture with technical mentoring. Leverage your 5+ years of experience to integrate platforms and ...
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Poland , Kraków
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Inetum
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Senior Software Engineer
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Join our Kraków team as a Senior Software Engineer to modernize and stabilize core systems. You'll need strong C++ skills, experience with C#/Python wrappers, and hands-on knowledge of Docker, Kubernetes, and Linux. This role offers a direct impact on critical infrastructure, flexible hours, priv...
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Poland , Kraków
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Montrose Software
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Senior JVM Software Engineer
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Join our Poznań team as a Senior JVM Software Engineer. You will lead the migration of legacy JBoss/WildFly and Java 6/8 systems to modern Spring Boot 3.x and Java 21. Utilize your expertise in JPA, Docker, and Kubernetes to rebuild critical order management interfaces. We offer a hybrid model, f...
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Poland , Poznań
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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 Engineer
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Join our team as a Senior Software Engineer in Poland. You will build scalable web applications using React, TypeScript, Python, and FastAPI. This remote role offers a chance to shape a leading Digital Adoption Platform with a global team. We provide a high-performance culture and serious commitm...
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Poland
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Userlane GmbH
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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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Explore a world of opportunity in senior software backend engineering jobs, where experienced professionals architect the core logic and services that power modern applications. A Senior Backend Engineer is a pivotal technical leader responsible for designing, building, and maintaining the server-side components, databases, and APIs that form the foundation of software systems. This role goes beyond writing code; it involves making critical architectural decisions that ensure scalability, reliability, security, and performance as user bases grow and data volumes increase. Professionals in these jobs typically own the end-to-end development of robust backend services. Common responsibilities include designing and implementing efficient data models and database schemas, building well-documented and secure RESTful or GraphQL APIs, and developing the business logic that drives application functionality. They are deeply involved in integrating various third-party services, managing authentication and authorization systems, and ensuring data integrity and protection. A significant part of the role is optimizing system performance, diagnosing complex bottlenecks, and planning for scalability, often using cloud-native patterns like microservices, serverless functions, and event-driven architectures. Furthermore, senior engineers are expected to establish and champion best practices in code quality, testing, and deployment, frequently mentoring junior team members and collaborating closely with frontend engineers, DevOps specialists, and product managers. The typical skill set for these senior roles is extensive. Proficiency in one or more backend programming languages such as Python, Java, Go, C#, or Node.js is fundamental. A strong grasp of database technologies, both SQL (e.g., PostgreSQL, MySQL) and NoSQL (e.g., MongoDB, DynamoDB), is essential. Candidates are expected to have hands-on experience with cloud platforms like AWS, Azure, or Google Cloud, and with infrastructure-as-code tools such as Docker and Kubernetes. Understanding CI/CD pipelines, version control with Git, and comprehensive testing strategies are standard requirements. Beyond technical prowess, successful senior backend engineers possess excellent problem-solving abilities, clear communication skills for articulating complex technical concepts, and a proven track record of taking ownership of projects from conception to deployment and iterative improvement. For those with the requisite experience and a passion for building resilient systems, senior software backend engineer jobs offer a challenging and rewarding career path at the heart of technological innovation.

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