Top Software Engineer Jobs in Krakow

Design, develop, test, and maintain Java backend services for a large-scale data pipeline management platform. Build REST APIs and microservices supporting orchestration, scheduling, execution, and state management. Participate in technical design, code reviews, automated testing, CI/CD, production troubleshooting, and reliability improvements. Collaborate with engineering, product, and platform teams while developing expertise in distributed systems, cloud technologies, Kubernetes, and data processing platforms.

As a Senior Software Engineer, you will integrate DPU hardware, execute validation plans, handle automation scripts, and collaborate with teams on networking features and testing.

Own quarterly engineering goals for the Recoveries team, delivering scalable backend systems that maximize charged-off loan recovery and reconcile partner discrepancies. Lead engineers through ambiguous problems, collaborate with product, design, analytics, and risk stakeholders, and ensure operational reliability through metrics, monitoring, on-call support, and failure handling. Establish quality standards, guide technical design and implementation, contribute to large codebases, and mentor engineers through feedback and technical leadership.

Build, deploy, and maintain scalable, secure SaaS features for BlackLine’s AI-powered Invoice-to-Cash platform. The role involves using AI-assisted development tools, contributing to technical design, writing tested code, collaborating with product and engineering teams, and ensuring enterprise-grade performance, reliability, security, and observability. Engineers will work with modern software practices, cloud-native technologies, CI/CD, infrastructure-as-code, and microservices while learning from senior engineers and architects.

Build, deploy, and maintain reliable backend systems supporting social network integrations at scale. Responsibilities include writing tested code, collaborating with product and engineering teams, reviewing code and designs, monitoring production services, troubleshooting outages, improving performance, and managing technical debt. The role also involves working with APIs, databases, messaging queues, Agile processes, architecture discussions, and cross-functional feature delivery.

Develop backend features in .NET, maintain APIs, support integrations, write unit-tested code, analyze bugs and logs, and participate in reviews and technical workshops. The role emphasizes responsible use and verification of AI tools for coding, debugging, research, and automation while collaborating with experienced developers and growing within the ASP.NET Core ecosystem.

Join BlackLine's Krakow engineering hub as a founding senior engineer building an AI-accelerated Invoice-to-Cash SaaS product. Own end-to-end feature delivery, design scalable secure systems, use AI development tools to boost velocity, ensure observability and reliability across microservices, collaborate with cross-functional teams, and mentor colleagues to raise engineering standards.

Lead SAP-focused engineering to design, develop, and integrate ABAP-based solutions between SAP (S/4HANA/ECC) and BlackLine Cloud. Provide technical architecture, troubleshooting, performance tuning, documentation, testing, release support, mentoring, and act as Scrum Master while ensuring high code quality and aligning product and stakeholder requirements.

Lead SAP ABAP development and integration of BlackLine applications with SAP Cloud. Design, develop, test, tune, and maintain scalable ABAP solutions (S/4HANA, ECC). Serve as technical lead, mentor junior developers, perform releases and off-hours support, collaborate with product and engineering teams, and document technical specifications and test plans.

Founding Staff Engineer to design and implement scalable, secure SaaS architecture, champion AI-accelerated development, deliver high-impact features, collaborate on product roadmaps, and mentor engineering team members to establish best practices.

Build and maintain cloud automation tools, libraries, and workflow components primarily in Python. Convert operational runbooks into reliable automated workflows, write and test code, debug issues, document solutions, and collaborate with platform and workflow teams. The role emphasizes cloud operations, platform engineering, security, reliability, and reducing manual operational toil.

Develops and maintains platform and fleet orchestration software, automation workflows, APIs, distributed services, and cloud infrastructure capabilities. Responsibilities include coding, testing, debugging, observability, secure development, production support, incident response, documentation, and reliability improvements. Collaborates across engineering, operations, product, and platform teams to automate cloud operations, manage infrastructure lifecycles, support fleet-wide changes, and improve developer and operational experience.

Design and develop scalable, high-quality backend systems for traffic automated road closure detection, handling the full software development lifecycle.

Build and operate backend-first, distributed platform services powering APIs, integrations, eventing, and analytical data systems to enable AI agents and enterprise-scale agentic workflows. Design for high throughput, reliability, security, and observability; apply AI-assisted engineering tools; mentor engineers and influence architecture, tooling, and developer experience.

Owns the architecture and development of a Python-based automated test framework for hardware validation and production testing. Responsibilities include test execution, configuration, hardware abstraction, diagnostics, reporting, database integration, user interfaces, automated testing, and equipment integration. The role establishes engineering standards, collaborates with electronics and production teams, and resolves complex test-system issues through structured debugging and sustainable improvements.

Develop and maintain public safety telecommunications applications and development/testing tools as part of an Agile software team. The role involves Java backend and frontend development, Linux-based work, Bash scripting, and use of Git, Bitbucket, and Jenkins. The intern will collaborate with distributed teams, work at least 32 hours weekly, and attend the Krakow office two days per week.

Design, build, and operate scalable identity and access management services supporting authentication, authorization, and user lifecycle management. Develop secure APIs, integrate identity systems, apply modern identity protocols, improve reliability and observability, and collaborate with product, security, and infrastructure teams. The role also involves production support, debugging, automated testing, incident response, and exploring AI/ML-driven identity automation.

Backend-focused Software Engineer responsible for designing, implementing, maintaining, and optimizing reliable services primarily in Python and Go for Splunk Cloud application management. The role includes debugging, API design, automated testing, observability, code reviews, Agile delivery, and cross-team collaboration. Engineers may also contribute to React interfaces and reusable UI components while supporting production deployments and operational excellence.

Develop and maintain backend services for Splunk Cloud application management, primarily using Python and Go. Design, implement, debug, test, and optimize reliable software while contributing to React-based interfaces when appropriate. Collaborate with product, UX, architecture, documentation, and engineering teams within an Agile software development lifecycle. Contribute to testing, observability, operational excellence, and ongoing technical growth.

Develop C#/.NET applications and tools for radio and repeater programming and configuration. Responsibilities include validating requirements, defining user stories, developing features, building automated tests, performing manual regression testing, and maintaining applications. The role works across client and server applications using WPF, WCF, SQL databases, and Azure cloud technologies within an agile scrum team.

As a Software Engineer in Infrastructure Reliability, you'll build distributed systems that enhance platform reliability, implement traffic control mechanisms, and develop monitoring tools, working closely with diverse teams.

Develop scalable, reliable, high-performance software for Splunk’s Metadata Catalog and knowledge graph platform. Responsibilities include contributing to feature design, building cloud-native services, debugging customer issues, driving software quality, participating in on-call rotations and incident reviews, and integrating new technologies. The role requires object-oriented development, distributed systems knowledge, containerization, cloud platforms, Agile practices, and CI/CD experience.

Develop and maintain Golang services and RESTful APIs; contribute to AWS, Azure, and GCP cloud infrastructure; deploy containerized services with Kubernetes and Terraform; participate in design, testing, code reviews, monitoring, incident response, and on-call rotations. Collaborate with engineers to improve software, automation, security, reliability, and engineering practices while building cloud-native production expertise.

Design, build, maintain, debug, and deliver scalable SaaS software and reusable components for Splunk’s App Runtime team. Develop features within a microservices architecture, create automated test suites, integrate metrics and service-level indicators, optimize performance, participate in code reviews, and collaborate with product, architecture, UX, documentation, and engineering teams using Agile SDLC practices.

Design, build, and operate low-latency, strongly consistent distributed database systems. Implement replication, consensus, caching, and performance improvements. Run and maintain production services including on-call rotation, collaborate on roadmaps and system designs, and write performance-critical code in systems languages.