Senior Backend Software Engineer

Role Title: Senior Software Engineer

Location: Warsaw, hybrid

Contract Type: Umowa o Pracę - full time employment

30000-35000 zl gross/month - negotiable

What you’ll do:

• Engineer the backend foundations behind data-intensive products and AI-powered tools.
• Create reliable data workflows to prepare and move information between systems.
• Bring LLM-based features from experimentation into real-world applications.
• Develop APIs and independent services that meet demanding performance and reliability requirements.
• Strengthen deployment processes, system monitoring and operational stability.
• Partner with research, data and product teams to turn technical ideas into usable solutions.
• Share expertise and help other engineers improve their technical approach.

What you bring:

• 5+ years of commercial backend engineering experience.
• Strong programming skills in Java, Python or Go.
• Practical experience with data engineering and batch or streaming processing.
• Experience implementing generative AI or LLM-based functionality.
• Familiarity with cloud infrastructure, Docker and container orchestration.
• Knowledge of CI/CD, automated testing and Infrastructure as Code.
• Solid SQL skills and experience working with different types of databases.
• A degree in Computer Science or a related technical discipline.
• Strong English communication skills.

Nice to know:

• Exposure to financial services or investment-related technology.
• Experience taking AI solutions from prototype to production.
• Understanding of secure data handling and governance requirements.

If you enjoy building robust backend systems and turning emerging AI technologies into practical solutions, let’s connect.