Top Software Engineer Jobs in Krakow

Develop scalable, fault-tolerant distributed search services for Splunk’s core platform. Responsibilities include designing search features, optimizing query execution, improving reliability and scalability, troubleshooting customer incidents, building CI/CD and test automation capabilities, and mentoring engineers. The role requires strong C++ development, distributed systems expertise, cloud experience, communication APIs, and software engineering fundamentals.

Senior Software Engineer to design and implement C++/Python software, accelerate workloads with CUDA, develop and maintain Linux kernel modules and system services, optimize system and GPU performance, manage Linux systems, mentor junior engineers, and integrate AI technologies across products.

Staff Software Engineer responsible for designing, building, and operating distributed market data systems. The role focuses on real-time blockchain data ingestion, streaming, normalization, storage, APIs, reliability, data correctness, observability, incident recovery, and production support. The engineer will lead technical decisions, mentor teammates, translate ambiguous requirements into designs, and use AI-assisted development throughout the software lifecycle.

Senior software solutions engineer responsible for resolving complex Ethernet and InfiniBand adapter/DPU issues, developing tooling and features, collaborating with customers and engineering, and improving reliability and experience of NVIDIA networking products. Role mixes 50% customer support/issue ownership and 50% R&D.

Supports software quality throughout the SDLC by designing, generating, validating, and maintaining automated API and web UI tests. Evaluates AI-generated test assets for false positives, coverage gaps, and brittle assertions; collaborates with developers, product teams, and QA leadership; and architects scalable testing solutions. The role also emphasizes adaptability, clear risk communication, AI-assisted development, and potentially CI/CD integration.

Build and own Aura’s AI Intelligence Platform, creating scalable systems that unify sensitive data and enable secure, privacy-preserving AI agents. Design architecture, develop distributed systems, support production operations, and make technology decisions across AWS, Python, and TypeScript. Establish security, privacy, observability, testing, and reliability practices while mentoring engineers and influencing technical direction across teams.

Build and maintain backend services powering food search and logging. Tune Elasticsearch performance across indexing, query evaluation, relevance, cluster management, and monitoring. Develop search-quality metrics and experiments, evaluate data technologies, and collaborate with engineering and product teams. Write production Scala services while working with SQL and Python, large-scale data infrastructure, databases, Kafka, cloud platforms, and AI-powered development tools.

Define infrastructure and platform architecture across fintech engineering teams, including cloud topology, networking, deployment pipelines, observability, security, and infrastructure as code. Lead architecture decisions, technical standards, reliability practices, and cross-team adoption without direct authority. Own the infrastructure layer of an agentic engineering harness, including CI/CD, sandboxing, tool execution, and guardrails. Mentor engineers and contribute to platform and product strategy.

Define frontend technical direction for a fintech platform area across architecture, design systems, micro-frontends, state management, performance, rendering, and accessibility. Author ADRs and RFCs, evaluate technology trade-offs, evolve an AI-native engineering harness, and drive adoption of frontend standards across teams. Provide product strategy input and mentor Staff-track engineers. The role requires extensive frontend, fintech, cross-team architecture, technical leadership, and technical writing experience.

Design, develop, operate, and troubleshoot scalable cloud-based services using .NET/C#, React, JavaScript, SQL, and Azure. Build integrations, manage migrations, maintain CI/CD pipelines, apply cloud-native architecture, monitor production systems, remediate vulnerabilities, participate in on-call rotations, and collaborate with product and engineering teams to deliver software features.

Design, build, and operate production services, APIs, and AWS-based data pipelines using Python and .NET. Develop REST and GraphQL APIs, document-processing workflows, and PostgreSQL solutions. Use AI coding tools while reviewing generated code for quality, security, and maintainability. Own testing, code reviews, CI/CD, monitoring, troubleshooting, and production support. Collaborate with QA and stakeholders in an Agile environment, contribute to continuous improvement, and support onboarding and knowledge sharing.

Develop and maintain backend software features within distributed microservice architectures. Participate in the full software development lifecycle, including design, coding, reviews, testing, performance improvement, observability, incident resolution, and postmortems. Collaborate with senior engineers, product management, and SRE/DevOps teams while using AI coding tools and continuously improving technical skills and code quality.

Develop and maintain backend software features within a distributed microservices architecture. Participate in the full software development lifecycle, including design, code reviews, testing, performance improvements, observability, incident resolution, and postmortems. Collaborate with senior engineers, product management, and SRE/DevOps teams while using AI coding tools and continuously improving technical skills, code quality, reliability, and operational excellence.

Develop and enhance scalable backend services for an automotive marketplace. Design microservices, REST APIs, modules, and platform components while collaborating with Product, Data, and UX teams. Maintain high standards for code quality, testing, and engineering practices. Use Java, Kotlin, Spring Boot, and AI-assisted development tools. The role requires Polish and English proficiency, EU work authorization, and occasional Warsaw office visits.

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.

Design, develop, and operate highly available data streaming platforms and DevOps tools. Build scalable streaming services, observability and performance analytics systems, CI/CD automation, monitoring processes, and operational tooling. Improve reliability, security, usability, and zero-human-engagement operations while troubleshooting complex production issues across distributed systems and Linux networking environments.

Develop and improve real-time software for power-grid automation, create new features, conduct code reviews, optimize performance, and collaborate in a global agile engineering environment. The role requires C and C++ development experience, familiarity with Docker, Kubernetes, and Linux, strong software optimization skills, English proficiency, and the ability to work independently and collaboratively.

Develop and maintain scalable backend web applications using Python, Django, and Django REST Framework. Design APIs, integrate frontend and backend systems, manage databases, optimize application performance and security, write tests, resolve technical issues, and implement upgrades and new features. Collaborate with frontend developers and QA engineers in an Agile, team-oriented environment.

Build and maintain highly available cloud-based emergency call-handling platforms using DevOps practices. Responsibilities include infrastructure and application deployment automation, Kubernetes orchestration, CI/CD pipeline development, Linux administration, monitoring, troubleshooting, and operational support. The role contributes to design, implementation, testing, delivery, and maintenance within agile teams supporting mission-critical systems in a 24/7 environment.

Build and manage funding applications for an online trading platform, modernizing architecture, improving performance, and expanding payment options. Collaborate within an international Scrum team alongside full-stack, front-end, React Native, architecture, and UX professionals. Develop cloud-based applications using Python, React, React Native, and Google Cloud Platform, while applying software engineering best practices, testing, debugging, and modern deployment approaches.

Own end-to-end migration of business domains from a legacy desktop ERP to a modern web ERP. Design data models, APIs, tenant isolation, cutover and rollback plans; execute safe live-data migrations; maintain production reliability; review backend and frontend code; collaborate with Product; mentor engineers; and occasionally modify legacy C++ code.

Owns end-to-end test strategy, designs scalable backend and UI automation frameworks, integrates automated testing into CI/CD pipelines, performs exploratory testing, and advocates for testability and reliability across engineering and product. The role requires strong programming, Kubernetes and distributed-systems knowledge, debugging ability, and cross-functional ownership in a fast-moving startup.

Staff Backend Software Engineer responsible for designing scalable distributed systems, APIs, databases, and CI/CD pipelines while migrating a legacy monolith to microservices. The role emphasizes AI-native development through agentic workflows, context engineering, AI tooling, and agent-ready repositories. Responsibilities include technical leadership, system architecture, mentoring, technical debt reduction, cross-team influence, and setting engineering standards across backend platforms.

Lead performance engineering for Splunk’s petabyte-scale distributed systems. Design and optimize C++ components involving memory, concurrency, I/O, latency, caching, and scalability. Use profiling, eBPF, benchmarks, telemetry, and performance modeling to identify issues and guide architecture. Coordinate cross-functional performance initiatives, quantify trade-offs, lead postmortems, influence technical decisions, mentor engineers, and develop AI-assisted performance workflows.

Lead performance optimization for Splunk’s C++ distributed, petabyte-scale data platform. Architect improvements across search, indexing, caching, I/O, concurrency, latency, and scalability; establish profiling, benchmarking, observability, and regression practices; and introduce eBPF, continuous profiling, and AI-assisted workflows. Advise leadership through quantified trade-offs, influence architecture across teams, engage customers, and mentor senior and staff engineers.