Senior Software Engineer / Technical Lead

541 Cisco Systems Poland sp. Z o.o.; Kraków; On-site; PLN 340,000 - 520,000; Full time

Job summary

Cisco in Kraków seeks a technical leader to drive UEBA features, mentor engineers, and deliver scalable Python/React-based solutions in a distributed team across multiple time zones. You will design, build and operate high-performance services, lead architectural discussions, and push for reliability and security at scale.

The role emphasizes hands-on coding, on-call rotation, collaboration with product and design, and continuing learning with modern tools and cloud-native patterns.

Qualifications

• Backend development with Python/Java and strong data structures.
• Experience with RESTful APIs, microservices, and scalable systems.
• Proficiency in SQL, Redis, and Elasticsearch.
• Hands-on cloud and DevOps with containerization (Docker/Kubernetes) and CI/CD.
• Ability to translate complex ideas for diverse audiences.

Responsibilities

• Own and drive design, development and operation of new features.
• Lead design and architectural discussions.
• Build reliable, scalable, high-performance applications.
• Debug and resolve customer-reported issues; deliver effective solutions.
• Participate in on-call rotations and post-incident reviews.
• Mentor junior engineers and promote career growth.

Skills

Python/Java

RESTful APIs

SQL

Redis

Elasticsearch

Docker/Kubernetes

AWS/Azure/GCP

On-call / incident response

Communication

Education

Bachelor’s degree in related field

Master’s degree

Tools

GitLab CI/CD

Jenkins

Elasticsearch tooling

Job description

Join us as we pursue our exciting vision to make machine data accessible, usable and valuable to everyone. At Splunk, we’re committed to our work, customers, having fun and most importantly to each other’s success. Learn more about Splunk careers and how you can become a part of our journey! We are seeking a technical leader to help deliver Splunk's Security’s User & Entity Behavior Analytics (UEBA) solution. UEBA is a risk management solution that leverages ML/AI algorithms and behavior analytics to provide comprehensive user and entity insights. By delving into these insights, security teams can identify anomalies and take measures to mitigate potential impacts. Meet the User and Entity Behavior Analytics (UEBA) Team We are a passionate team who cares deeply about our customers, our teammates and you. In this role, you will work with product management, our design team, our customers and other engineering teams. We have a lean process that focuses on empowering and serving our engineers as opposed to just directing them. Our team develops software in Python and React and uses modern technologies like Docker, GitLab CI/CD, AWS and many more. Our Engineering Team operates in the following time zones: Central European Time, Eastern Time, Central Time and Pacific Time. Our team is fully distributed and we welcome English speakers within those time zones.

What you'll get to do:

• Own and be accountable for the design, development and operation of new product features
• Lead team design and architectural discussions.
• Build reliable, scalable, and high-performance applications.
• Debug and resolve customer-reported issues, delivering effective solutions.
• Participate in on-call rotations, post-incident reviews, and other operational activities to ensure service reliability.
• Learn, explore, and integrate new technologies into the team’s workflow.
• Mentor junior members of the team with an eye toward their future career growth.

Minimum Qualifications:

• Backend Development: Proficiency in Python (preferred) or Java, with a solid foundation in data structures, algorithms, microservices, and RESTful APIs.
• Data & Storage: Expertise in SQL, key-value stores (Redis), and search/analytics platforms (Elasticsearch, Splunk).
• Cloud & DevOps: Hands-on experience with AWS/Azure/GCP, containerization (Docker, Kubernetes), and CI/CD pipelines (Jenkins, GitLab).
• Operational Excellence: Skilled in system monitoring, telemetry, log management, and leveraging AI coding assistants (e.g., Cursor, Claude Code) to accelerate development.
• Communication & Collaboration: Proven track record of translating complex technical concepts for diverse audiences and a demonstrated commitment to accountability and intellectual curiosity.

Experience Requirements:

• 8+ years of related experience with a technical Bachelor’s degree, or 6+ years with Master’s.

Preferred Qualifications:

• Proficiency in frontend programming languages and frameworks such as JavaScript, TypeScript and React.
• Hands-on experience with building, testing and deploying production ready LLM based AI solutions.
• This role comes with the on-call shift schedule up to 20% of time.

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.