Senior Software Engineer (C++)

541 Cisco Systems Poland sp. Z o.o.; Kraków; On-site; PLN 180,000 - 300,000; Full time

Job summary

Cisco's Splunk Search Experience backend team is seeking Senior Software Engineers to help build a scalable search platform powering AI-driven workflows across our products. You will develop high-performance backend services, work on distributed systems, and mentor junior engineers, collaborating with product and cross-functional teams.

You will design, optimize, and operate search pipelines, ensure reliability and scalability, and contribute to architecture decisions while delivering end-to-end

Qualifications

• 6+ years of experience in software engineering with a relevant degree or equivalent.
• Deep expertise in C++, including experience building high-performance backend systems.
• Strong foundation in distributed systems concepts, system design, debugging and testing.
• Proven ability to design scalable and reliable system architectures.
• Excellent problem-solving, debugging, and triaging skills.
• Experience owning and delivering complex software projects end-to-end in production environments.
• Strong written and verbal communication skills.
• Demonstrated experience mentoring other engineers and driving technical direction.
• Experience with public cloud services such as AWS, GCP, Azure.

Responsibilities

• Design, develop, and launch features powering Splunk’s core search functionalities.
• Build robust, fault-tolerant and scalable distributed systems in a multi-threaded/multi-process environment.
• Define and perform search language layer optimizations and transformations.
• Analyze and improve reliability and scalability of search execution pipelines.
• Diagnose and resolve customer incidents, identify gaps, and deliver improvements.
• Mentor junior engineers and grow talent on the team.

Skills

C++ backend development

Distributed systems

System design

Debugging & testing

Performance tuning

Mentoring engineers

Cloud services (AWS/GCP/Azure)

Education

Bachelor's or Master's in Computer Science or related field

Tools

Kubernetes

Monitoring tools

Observability tooling

Job description

Meet the Team

The Splunk Search Experience backend team sits at the core of the Splunk Platform, powering Cisco Data Fabric (https://investor.cisco.com/news/news-details/2025/Cisco-Data-Fabric-Transforms- Machine-Data-into-AI-Ready-Intelligence/default.aspx) vision to transform machine data into AI-ready intelligence. We are seeking a Senior Software Engineers to join a team of passionate distributed-systems engineers in building the next-generation, highly scalable search platform that fuels AI-driven workflows across our products.

Your Impact

In this role, you will be part of the team driving the evolution of Splunk’s flagship search engine capabilities, ensuring the platform meets the next wave of customer scale, performance, and reliability needs. You will have the opportunity to partner with product, and multi-functional teams to deliver high-performance, efficient, and resilient backend search services that delight customers. Design, develop, and launch features directly powering Splunk’s core search functionalities across our product ecosystem. Build robust, fault-tolerant and scalable distributed systems in a multi-threaded/multi-process environment. Define and perform various search language layer optimizations/transformations. Analyze and improve reliability, and scalability of search execution pipelines. Diagnose and solve customer incidents and issues, reflect and identify gaps in product, observability and process, and design and deliver enhancements for prevention. Hire, mentor junior engineers and grow talents on the team.

Minimum Qualifications

• 6+ years of experience in software engineering with a Bachelor’s or Master’s degree in Computer Science or related field or equivalent practical experience.
• Deep expertise in C++, including experience building high-performance backend systems.
• Strong foundation in Distributed Systems concepts, System Design, Debugging and Testing.
• Proven ability to design scalable and reliable system architectures.
• Excellent problem-solving, debugging, and triaging skills.
• Experience owning and delivering complex software projects end-to-end in production environments.
• Strong written and verbal communication skills.
• Demonstrated experience mentoring other engineers and driving technical direction.
• Experience working with public cloud services such as AWS, GCP, Azure.

Preferred Qualifications

• Experience with modern monitoring, observability, and performance tuning tools.
• Exposure to full-stack search systems (e.g., indexing pipelines, query execution pipelines).
• Knowledge of deploying and managing services in Kubernetes clusters.

Why Cisco?

At Cisco, we’re revolutionizing how data and infrastructure connect and protect organizations in the AI era - and beyond. We’ve been innovating fearlessly for 40 years to create solutions that power how humans and technology work together across the physical and digital worlds. These solutions provide customers with unparalleled security, visibility, and insights across the entire digital footprint. Fueled by the depth and breadth of our technology, we experiment and create meaningful solutions. Add to that our worldwide network of doers and experts, and you’ll see that the opportunities to grow and build are limitless. We work as a team, collaborating with empathy to make really big things happen on a global scale. Because our solutions are everywhere, our impact is everywhere. We are Cisco, and our power starts with you. Cisconians power the future. We make impact as a team, innovating fast and fearlessly to create meaningful solutions on a large scale. The depth and breadth of our technology doesn't just benefit our customers - it also means limitless opportunities for us to experiment and learn. We understand the power each of our unique backgrounds bring when we work together. Because of that, we have a global network of thinkers, doers, experts, and curious creators who help one another do their life’s best work.