Top Software Engineer Jobs in Krakow

Develop and maintain React component libraries and micro-frontend App Shell features. Contribute to .NET-to-React modernization, build Java backend services, and work with GCP, CI/CD pipelines, Terraform, and cloud deployments. Write tested, maintainable code, troubleshoot front-end and API issues, participate in code reviews, and collaborate with senior engineers across the software development lifecycle.

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.

Investigate complex software issues, perform root-cause analysis, and implement improvements that enhance product quality, reliability, maintainability, stability, and observability. Develop, debug, test, and verify software using C++17 or later, automated testing, and approved AI-assisted engineering tools. Collaborate across technical teams, contribute to architecture discussions, automate troubleshooting activities, strengthen verification strategies, and share engineering knowledge.

Provides senior Avaloq development services for banking and wealth management transformation initiatives. Designs, configures, enhances, integrates, and migrates Avaloq solutions; analyzes requirements; troubleshoots complex issues; and collaborates with clients, architects, and technical specialists. The role also contributes to testing, code quality, solution design, maintainable development practices, and knowledge sharing under an independent B2B contract.

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 design and delivery of scalable, secure SaaS features for an AI-powered Invoice-to-Cash platform. Own features end-to-end, use AI-accelerated tools, drive technical design, mentor engineers, ensure observability, CI/CD, testing, and enterprise-grade performance and reliability.

Develop and test software for video streaming services and multimedia pipelines. Work with RTSP, RTP, WebRTC, GStreamer, networking, NAT traversal, and streaming quality troubleshooting. Analyze requirements, integrate new technologies, improve products, collaborate with QA on testing, and own projects through completion. The role offers exposure to IoT, video monitoring, backend systems, and consumer technology development.

Develop mission-critical computer-aided dispatch and content-logging solutions within a multidisciplinary Scrum team. Contribute to end-to-end full-stack development using C++ back-end technologies and Angular/TypeScript front-end technologies, while collaborating with product owners and stakeholders throughout the software development lifecycle.

Develop and maintain Kotlin and Java applications for a telecommunications client. Responsibilities include code refactoring, implementing new functionality with technical and product teams, maintaining documentation, performing integration, regression, and acceptance testing, and providing production support for technical issues.

Lead software engineering efforts for Samsara’s External Platform EMEA, building scalable distributed systems, APIs, reporting, administration, integrations, and business-critical infrastructure. Lead technical discussions, influence architecture and roadmap, deliver full-stack features, maintain production systems, and support customer-focused iteration. Mentor engineers, hire and develop high-performing teams, and contribute to machine learning-powered products and long-running projects.

Design and implement scalable, testable Java backend features; profile and optimize performance and databases; apply advanced testing/debugging; collaborate in Agile with distributed teams to improve architecture, scalability, and resilience.

Develop, test, document, and operate backend services, APIs, data collection jobs, validation checks, automation, and internal tools that expose engineering quality signals. Contribute to software design, coding, unit testing, code reviews, troubleshooting, documentation, incident triage, and deployment readiness while learning secure coding, reliability, and production support practices.

Build and maintain secure onboarding forms and registration workflows using React.js and Python FastAPI. Integrate third-party APIs and SDKs, own development tasks through deployment, write clean and testable code, debug cloud-based systems, and collaborate across international teams. The role also involves improving system architecture, applying software engineering best practices, and using AI-assisted development tools.

Build and operate Python-based backend services, APIs, developer tools, data pipelines, and cloud-native solutions that improve software quality and developer productivity. Responsibilities include full lifecycle development, CI/CD integration, automated testing, observability, troubleshooting, technical documentation, design reviews, and on-call support. The role collaborates with engineering and platform teams to establish standards and detect, isolate, and remediate software and test failures.

Develop and maintain C/C++ software for Ericsson LTE/5G projects across the full product lifecycle. Responsibilities include designing features, refactoring code, implementing product improvements, improving automated testing and CI/CD workflows, documenting changes, and collaborating in an international Agile Scrum environment using JIRA.

Develop mission-critical dispatch and content-logging solutions within a multidisciplinary Scrum team. Contribute across the full software development lifecycle, working with C++ backend technologies and learning Angular, TypeScript, JavaScript, HTML5, and CSS3 for front-end development. Collaborate with product owners and stakeholders, solve varied technical problems, and support reliable real-time communication products for public safety customers.

Develop and maintain Python-based Splunk services and add-ons for large-scale, real-time data ingestion and processing. Participate in requirements, design, development, testing, automation, deployment, code reviews, troubleshooting, and on-call support. Build cloud-based backend solutions using AWS, Azure, or GCP, with LLMs, Generative AI, agentic architecture, and RAG. Improve system reliability, diagnose production issues, and create maintainable, documented software.

Investigate and resolve software issues found during testing and customer use, support root-cause analysis, verify fixes, implement small C++ improvements, and develop unit and automated tests. The role involves troubleshooting complex telecom software, participating in code reviews, collaborating across technical teams, and using AI-assisted tools while building product and architecture expertise.

The Senior Software Engineer will design and implement scalable data streaming solutions, develop DevOps tools, and improve system usability and observability.

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.

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.

Develop Java software within a Scrum team across planning, development, testing, and maintenance. The intern will build customer-facing features for Motorola Solutions’ mission-critical communication system, collaborate with experienced professionals, and participate in the full software development lifecycle. The role requires Java and concurrency knowledge, analytical thinking, English communication, and willingness to learn. Work is hybrid from the Krakow office, with a minimum 32-hour weekly commitment and a 15-month employment contract.

Develop, test, integrate, enhance, and maintain C/C++ software supporting telecommunications radio infrastructure. Collaborate with global teams and take end-to-end responsibility for feature delivery. The role requires Linux skills, English communication, at least 24 hours per week, and office attendance in Krakow two days weekly under a 15-month employment contract.

Implement and test C# and Java services for the Intelligent Middleware product, deployed on Windows and Linux. Support environment setup, maintenance, and deployment orchestration in the product lab while learning from public safety technology experts.

Build and maintain end-to-end scalable frontend and backend applications, design APIs (REST/GraphQL), implement data pipelines, optimize databases, collaborate on UI/UX, write tests, automate CI/CD, monitor production, and participate in agile processes.