Top Software Engineer Jobs in Krakow

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.

Defines backend architecture and technical direction for a fintech platform area spanning payments, merchant, or consumer products. Leads architectural decisions, ADRs, RFCs, distributed systems design, APIs, data consistency, cloud and database selection, and cross-team technical change. Evolves an agentic engineering harness through instrumentation and adoption metrics, contributes to product strategy, and mentors senior engineers. Requires extensive software engineering experience, fintech or payments architecture expertise, and strong technical writing.

Provides cross-domain technical leadership for InPost’s fintech platform. The role owns architecture decisions across payments, merchant, and consumer platforms; translates business strategy into technical roadmaps; authors ADRs and RFCs; leads adoption of engineering patterns; develops AI-assisted engineering workflows; and mentors Staff Engineers and Engineering Managers. The position requires extensive experience in software engineering, distributed payments systems, architecture authority, production LLM systems, cloud platforms, APIs, databases, and technical communication.

Build and operate production-grade AI agents and agentic workflows for ABB digital services and asset management. Integrate agents with enterprise platforms, APIs, operational data, and digital tools. Define orchestration, context, memory, evaluation, safety, monitoring, deployment, and control mechanisms. Partner with architects, product owners, data engineers, and software teams while mentoring colleagues and ensuring secure, scalable, reliable, and cost-effective enterprise solutions.

Lead test framework architecture and continuous execution pipelines for cloud platform features. Define automation standards, shape quality engineering strategy, mentor engineers, and improve release stability. Build automated testing frameworks using Python, Pytest, Go, or Bash, with emphasis on highly available Kubernetes services, containers, cloud-native technologies, Linux systems, networking, security, and CI/CD practices.

Design and develop the core vCluster Platform, focusing on Kubernetes internals, tenant isolation, container orchestration, and scalable resource-sharing systems. Build high-performance Go software, own features from technical design through release, solve complex systems-architecture problems, and contribute to open-source projects. The role requires autonomous technical leadership, active collaboration with the Kubernetes community, and experience in high-growth startup environments.

Improve Firefox Gecko’s Session History health by writing Web Platform Tests and Gecko mochitests, fixing test failures and code issues, debugging a mature browser-engine codebase, and collaborating through code review and upstream landing.

Leads test strategy, framework architecture, and platform quality initiatives for Akamai’s cloud-native Compute platform. Partners with leaders and architects on testing roadmaps, mentors engineers, establishes automated continuous deployment testing standards, and advances scalable testing methodologies. Requires expertise in test automation, software platform engineering, CI pipelines, infrastructure, networking, Kubernetes, cloud-native services, Python, Go, Linux, and security principles.

Design and build the vCluster Platform using Kubernetes internals and Go. Own features end to end from technical design through release, solve complex systems architecture problems, contribute to open-source projects, and develop scalable tenant isolation and resource-sharing solutions. The role requires autonomous technical problem solving, strong Kubernetes expertise, and participation in a high-growth startup environment.

Design and implement Java microservices for parcel creation and other business-critical systems. Responsibilities span architecture, development, automated unit, integration, and contract testing, code reviews, event-driven Kafka integrations, deployment, and end-to-end ownership of solutions. The role requires collaboration across a complex distributed environment, participation in architectural decisions, and use of AI-assisted development tools such as Claude Code.

Develop a highly optimized, open-source inference framework for AI networking acceleration on supercomputers and data centers. Build low-level infrastructure using hardware offloads, GPU kernels, RDMA networking, and performance optimization techniques. The role requires modern C++/C/Rust development, Linux expertise, TCP/IP knowledge, and understanding of computer architecture and operating systems, with CUDA, ML, LLM, parallel programming, HPC, and RDMA experience preferred.

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

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.

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.

Build and maintain Ergodic AI’s AI platform across back-end and front-end systems. The role involves developing with Python web frameworks and JavaScript/TypeScript, integrating with client technology stacks and workflows, applying AI, ML, and LLM concepts, and contributing to DevOps, cloud deployment, testing, and infrastructure practices. As an early-stage hire, the engineer will help shape the product and solve complex data and AI challenges.

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.

Design and implement large-scale browser-based rendering infrastructure to execute and extract structured content from JS-heavy web apps. Improve rendering quality, performance, cost, and throughput at internet scale and productionize rendering research.

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.

Own the technical direction of Booking Engine services supporting pricing, availability, and booking at high scale. Design, develop, test, and maintain C#/.NET and gRPC-based systems; manage performance, reliability, releases, and incident response. Lead architecture and delivery across engineers, mentor team members, collaborate with product and engineering groups, and drive technical improvements. Participate in on-call support and help establish effective AI-assisted development practices.

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.

Build and maintain scalable applications and services while improving reliability through observability, automation, performance tuning, and incident response. Develop tools and workflows that reduce manual effort, investigate production issues, identify root causes, and implement durable fixes across code, infrastructure, and processes. Collaborate with developers, platform engineers, and product teams to shape technical direction, improve operational readiness, and apply AI to software development and service operations.