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Senior Software Engineer - Systems Poland Jobs

86 Job Offers

Senior Software Engineer
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Join Sopra Steria as a Senior Software Engineer (Python/JavaScript) for a major aerospace client. Develop critical aviation applications using ArcGIS and Vue.js in a multinational team. Enjoy a stable industrial environment, benefits like private healthcare, and workation. Occasional travel to Gd...
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Poland , Gdańsk
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12000.00 - 16000.00 PLN / Month
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Sopra Steria
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Senior Software Engineer
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Join our Kraków team as a Senior Software Engineer to build a next-generation cloud platform using Azure, .NET Core, React, and TypeScript. You will architect scalable solutions, champion AI integration, and support a global client base. We offer a collaborative culture, career development, and c...
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Poland , Cracow
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Not provided
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Medius
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Senior Software Engineer
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Join our team as a Senior Software Engineer to build a secure, scalable inspection platform from the ground up. You will design microservices in Java/Spring Boot, integrate Elasticsearch, and deploy via Kubernetes. Enjoy a remote-first model with competitive compensation, based in Rzeszów or Lviv.
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Poland , Rzeszów
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Edvantis
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Senior Software Engineer (Java)
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Join Sopra Steria Polska in Katowice as a Senior Java Engineer. You will integrate the Simpl‑Open middleware into the Language Data Space, focusing on secure onboarding, APIs, and semantic interoperability. We seek strong Java/Spring Boot skills with Docker, OAuth 2.0, and REST API experience. En...
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Poland , Katowice
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12000.00 - 16000.00 PLN / Month
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Sopra Steria
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Senior Software Engineer, Python
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Join our Chat group as a Senior Python Engineer and build next-generation AI recruiting products. You will design, implement, and scale AI agentic systems using Python, Kubernetes, and AWS. We offer a remote-friendly culture in Poland, competitive salary, and the chance to make a real impact in H...
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Poland
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SmartRecruiters
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Senior Software Engineer - Java
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Join Mastercard's Open Banking team in Gdansk as a Senior Java Engineer. Develop and maintain state-of-the-art APIs for secure, seamless European bank connectivity. You will build low-touch solutions for onboarding, transaction monitoring, and compliance. Ideal candidates have deep Java expertise...
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Poland , Gdansk
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Mastercard
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Senior Software Engineer
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Join Tripadvisor's distributed Experiences Engineering team in Krakow as a Senior Software Engineer. Tackle full-stack challenges with a backend focus, driving projects from design to deployment. Enjoy a flexible, remote-friendly role with competitive compensation, travel perks, and comprehensive...
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Poland , Krakow
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Tripadvisor
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Senior Software Engineer
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Poland
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Zencargo
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Senior Software Engineer
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Join our remote-first team as a Senior Software Engineer. You will build and scale back-end services using Node.js, NestJS, and serverless frameworks. Design databases and manage data pipelines on AWS/GCP/Azure for a cutting-edge advertising platform. Enjoy flexible hours, competitive pay, and we...
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Poland , Rzeszów
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Edvantis
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Senior Software Engineer
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Join our team as a Senior Software Engineer to architect a cutting-edge, secure inspection platform from the ground up. You will design microservices in Java/Spring Boot, implement file storage with direct I/O, and leverage Elasticsearch and Kubernetes. Enjoy a remote-first model, competitive sal...
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Poland , Rzeszów
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Edvantis
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Senior Software Engineer
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Poland , Łódź
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Arrive
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Senior C Embedded Software Engineer - 5G Physical layer
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Join Ericsson in Kraków to shape the future of 5G technology. As a Senior C Embedded Software Engineer, you will develop the physical layer (L1) for baseband units, focusing on signal processing and multi-core programming. We seek experts in C programming, real-time embedded systems, and signal p...
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Poland , Kraków
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Ericsson
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Senior Software Engineer
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Poland , Rzeszów
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Edvantis
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Senior Software Engineer
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Join our Warsaw team as a Senior Software Engineer. You will design and build complex Ruby on Rails applications, API interfaces, and backend infrastructure. We seek 5+ years of Rails experience, deep Ruby knowledge, and expertise in Postgres and caching. Collaborate with cross-functional teams t...
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Poland , Warsaw
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Workato
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Senior Software Engineer
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Join a global team to build a federated GraphQL platform for a leading e-commerce client. As a Senior Software Engineer, you'll design scalable backend systems using Java, Spring, and GraphQL. Leverage your expertise in distributed systems, Kafka, and Kubernetes in a remote role across multiple c...
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Poland; Argentina; Brazil; Colombia; Georgia
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Solvd Inc.
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Senior / Lead Software Engineer (TypeScript)
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Poland , Warsaw
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Solvd Inc.
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Senior Software Engineer
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Poland , Krakow
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BlackLine
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Senior Software Engineer (Full Stack)
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Poland , Krakow
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BlackLine
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Senior Software Engineer (Frontend)
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Poland , Krakow
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BlackLine
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Senior Python Software Engineer
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Poland
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N-iX
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About the Senior Software Engineer - Systems role

Explore Senior Software Engineer - Systems jobs and discover a pivotal role at the intersection of software development and core infrastructure. Professionals in these positions are the architects and builders of the foundational platforms, services, and frameworks that power large-scale, reliable, and performant applications. Unlike roles focused solely on end-user features, Senior Software Engineers in Systems delve into the underlying engine, optimizing for scalability, resilience, and efficiency to support millions of users and complex data flows.

Typically, individuals in this profession are responsible for designing, developing, and maintaining critical system-level software. This includes creating distributed systems, high-throughput data pipelines, low-latency services, and robust platform infrastructure. Common responsibilities involve architecting scalable solutions, conducting deep-dive performance analysis and debugging across the entire software stack, establishing engineering best practices and standards, and providing technical leadership and mentorship to other engineers. They own the full lifecycle of system components, from conceptual design and implementation to deployment, monitoring, and iterative improvement.

The role demands a unique blend of deep technical expertise and strategic vision. Typical skills and requirements include extensive experience with systems programming languages such as C++, Go, Java, or Rust, and a profound understanding of computer science fundamentals like data structures, algorithms, operating systems, and networking. Expertise in distributed systems concepts—including consensus, consistency, and fault tolerance—is paramount. These engineers are proficient in profiling and debugging complex systems, often needing to trace issues from high-level application logic down to native code or kernel interactions. A performance-first mindset, experience with cloud-native technologies and containerization, and a strong grasp of CI/CD pipelines and observability tools are standard expectations. Leadership skills are crucial, as these senior professionals champion technical excellence, drive architectural decisions, and elevate the entire engineering organization through mentorship and the establishment of a culture focused on robustness and scalability.

For those seeking to solve the most challenging engineering problems and build the bedrock upon which digital experiences stand, exploring Senior Software Engineer - Systems jobs offers a career path defined by high impact, continuous learning, and shaping the technological future of an organization.