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.