performance engineer

Get to know us betterCodiLime is a software and network engineering industry expert and the first-choice service partner for top global networking hardware providers, software providers and telecoms. We create proofs-of-concept, help our clients build new products, nurture existing ones and provide services in production environments. Our clients include...

Splunk is seeking a senior data-performance engineer to join the PerfOpt team in Kraków. You will own performance across search, indexing, and data flows, shaping guidelines and designs for large-scale systems.Lead end-to-end reliability improvements, design memory and concurrency strategies, and observability with profiling to quantify field impact and...

Elastic, the Search AI Company, is seeking a Principal Software Engineer to join the Elasticsearch Performance team. You will lead architectural and code-level performance initiatives across distributed systems to keep Elasticsearch fast, scalable, and reliable.You will own design and optimization efforts from architecture to production, mentor engineers,...

Elastic, the Search AI Company, enables everyone to find the answers they need in real time, using all their data, at scale — unleashing the potential of businesses and people. The Elastic Search AI Platform, used by more than 50% of the Fortune 500, brings together the precision of search and the intelligence of AI to enable everyone to accelerate the...

Are you interested in being part of an innovative team that supports Westinghouse's mission to provide clean energy solutions? At Westinghouse, we recognize that our employees are our most valuable asset and we seek to identify, attract and recruit the most qualified talent while recognizing and encouraging the value of diversity in the global...

Cisco in Kraków seeks a Senior Performance Engineer to own end-to-end performance optimization for a large distributed data platform. You will drive hypothesis-driven work, instrument signals, and ship measurable customer impact in memory, I/O, and tail latency.Apply advanced profiling tools, CI pipelines, and container tech to prevent regressions, while...

Backbase is seeking a Senior Database Engineer in Kraków to optimize database performance for our digital banking platform. This role will involve diagnosing complex database issues and collaborating with development teams to ensure peak efficiency.The ideal candidate will have solid experience with large databases, especially MySQL, and a deep...

Backbase is seeking a Database Engineer to own performance across a high-transaction, large-scale data environment. You will guide development teams on data design, run analytical experiments, and translate results for architects.The role emphasizes collaboration with cloud squads on MVPs and launches, with a focus on scalable, reliable platforms. Ideal...

Erste Bank Polska poszukuje specjalisty ds. testów wydajnościowych do pracy w zespole IT.Będziesz projektować i realizować scenariusze testów oraz rozwijać skrypty w JMeter/LoadRunner, monitorować metryki i rekomendować rozwiązania dla kluczowych systemów bankowych. Wymagane jest praktyczne doświadczenie z Java, Jenkins i GitLab, znajomość...

AMD is seeking a Senior Compiler Performance Engineer in Warsaw, Poland. This role focuses on enhancing the performance of applications through deep engagement with software and hardware engineering teams. The ideal candidate will possess a strong foundation in C/C++ and be adept in identifying performance bottlenecks through various profiling...

Cisco Systems, Inc. is seeking a Senior Performance Engineer to join the PerfOpt team to optimize Splunk customer experiences at scale. You will lead performance work from hypothesis through instrumentation to measurable customer impact across distributed components.You will design petabyte-scale memory, concurrency, and I/O solutions, instrument production...

Cisco Systems, Inc. is seeking a Senior Performance Engineer to join the PerfOpt team to optimize Splunk customer experiences at scale. You will lead performance work from hypothesis through instrumentation to measurable customer impact across distributed components.You will design petabyte-scale memory, concurrency, and I/O solutions, instrument production...

Ubique Systems seeks a Technical Senior Java Performance Engineer to join a distributed team supporting the KPS and XPOS platforms. You will design, optimize and migrate batch and streaming workflows, tune SQL, and collaborate with Microsoft and Azure teams.The role emphasizes deep Java expertise in Storm/Kafka/Flink, DevOps, and performance optimization...

Westinghouse Electric Company LLC in Warsaw, Poland, seeks a Senior Supplier Performance Engineer to oversee supplier relations and ensure high-quality metal components for the AP1000 program in Europe, with a Poland focus. The role involves supplier evaluation, development, risk management, and cross-functional coordination with Quality and Project...

541 Cisco Systems Poland sp. Z o.o. hosts the PerfOpt team, driving performance optimizations across a petabyte-scale Splunk-like pipeline. You will own performance strategy, guide architecture, and lead end-to-end initiatives that reduce latency and increase throughput.The role emphasizes deep C++, profiling, and scalable design in a distributed system,...

Elastic is seeking a Principal Software Engineer to join the Elasticsearch Performance team. You will lead architectural and code-level performance initiatives to optimize and predict Elasticsearch performance.You will collaborate with cross-functional teams to unlock the full potential of our software and embed performance-first thinking into new features....

Date Posted:2026-08-20 Country:Poland Location:PL-24-WROCLAW-011 ~ Bierutowska St 60-65 ~ BLDG 11 Position Role Type:HybridCollins Aerospace jest liderem w dziedzinie zaawansowanych technologicznie, inteligentnych rozwiązań, które pomagają na nowo zdefiniować przemysł lotniczy i obronny. Dzięki kompleksowemu portfolio i głębokiej wiedzy technicznej...

Location: PL-24-WROCLAW-011 ~ Bierutowska St 60-65 ~ BLDG 11 Date Posted: 2026-09-25 Country: Poland Location: PL-24-WROCLAW-011 ~ Bierutowska St 60-65 ~ BLDG 11 Position Role Type: Hybrid Collins Aerospace jest liderem w dziedzinie zaawansowanych technologicznie, inteligentnych rozwiązań, które pomagają na nowo zdefiniować przemysł lotniczy i obronny....

Responsibilities Monitor and analyze RAN performance at cell, site and cluster levels.Identify network degradations through KPI/KQI monitoring, statistical analysis and trend evaluation.Perform root cause analysis and define corrective actions to improve network performance.Analyze OSS counters, network traces and third-party Drive Test measurement...

Performance Tester Engineer (C# required) (only CR)Are you ready to take the next step in your career? Our staffingservices company is here to help you find the perfect job that matchesyour skills, experience, and career aspirations. We work with topcompanies across various industries, offering exciting opportunitiesthat can lead to long-term success.Job...