Senior Software Engineer (C++)

Cisco Systems, Inc.; Kraków; On-site; PLN 260,000 - 340,000; Full time

Job summary

Cisco Systems, Inc. in Kraków, Poland is seeking a Senior Software Engineer to join the Splunk Search Experience backend team. You will help build the next-generation, highly scalable search backend powering AI-driven workflows across Cisco products.

Bring 6+ years in software engineering, strong C++ expertise, and distributed systems know-how. You will design, implement, and tune high-performance services, mentor juniors, and collaborate with product and cloud teams.

Qualifications

• 6+ years of software engineering with CS degree or equivalent.
• Deep expertise in C++, building high-performance backend systems.
• Strong foundation in distributed systems, design, debugging, and testing.
• Proven ability to design scalable, reliable architectures.
• Excellent problem-solving, debugging, and triage skills.
• Experience owning and delivering complex software end-to-end in production.
• Strong written and verbal communication; mentoring and technical leadership.
• Experience with AWS, GCP, or Azure.

Responsibilities

• Design, develop, and launch features powering core search functionalities.
• Build robust, fault-tolerant and scalable distributed systems.
• Define and optimize search language layer transformations.
• Analyze and improve reliability and scalability of pipelines.
• Diagnose incidents and drive product observability improvements.
• Hire, mentor junior engineers and grow talents on the team.

Skills

C++ backend

Distributed systems

System design

Debugging & testing

End-to-end ownership

Mentoring

Public cloud (AWS/GCP/Azure)

Education

Bachelor's or Master's in CS

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 eco-system.
• 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.