Software Engineer – AI-Powered Internal Tools

INFOLET SP. Z O.O.; Kraków; Hybrid; PLN 190,000 - 270,000; Full time

Benefits offered by this job

Relocation package (4500 PLN)

Extended medical care

Multisport card

Life insurance

Job summary

INFOLET SP. Z O.O. in Kraków is seeking a backend engineer to join a hybrid team building internal tools for Future State Architecture across CTO Platforms. You will work on production-grade solutions spanning backend services, APIs, web UI, databases, integrations, and AI agent technologies.

You will collaborate with architects and engineers to translate architecture into scalable solutions, focusing on security, performance, observability, and automated testing in an international environment.

Qualifications

• Strong Node.js and/or Java development experience.
• Very good knowledge of PostgreSQL, including data modelling and query optimisation.
• Understanding of AI agents / agentic application engineering.
• Experience with integration patterns such as APIs, MCP, and tool/function calling.
• Strong understanding of production engineering principles, including security, resilience, performance, observability, and automated testing.
• Experience designing solutions for internal platforms, developer tooling, or similar engineering environments.
• Strong English communication skills and ability to collaborate with technical and non-technical stakeholders in an international environment.

Responsibilities

• Design, build, and maintain internal tools supporting Future State Architecture across CTO Platforms
• Develop backend services and APIs using Node.js and/or Java
• Integrate applications with PostgreSQL and other enterprise data sources
• Build and enhance web UI components supporting workflows for architects and engineering teams
• Develop and orchestrate autonomous AI agents supporting software build, testing, and deployment processes
• Implement integration patterns using MCP, tool/function calling, and APIs
• Collaborate with architects, platform engineers, and stakeholders to translate architecture requirements into technical solutions
• Ensure solutions meet engineering standards for security, performance, resilience, observability, testing, and documentation
• Contribute to code reviews, automation, operational support, and continuous improvement of the engineering toolchain

Skills

Node.js

Java

PostgreSQL

AI agents

APIs

English communication

Tools

MCP

PostgreSQL tooling

Job description

INFOLET SP. Z O.O. in Kraków is seeking a backend engineer to join a hybrid team building internal tools for Future State Architecture across CTO Platforms. You will work on production-grade solutions spanning backend services, APIs, web UI, databases, integrations, and AI agent technologies.

You will collaborate with architects and engineers to translate architecture into scalable solutions, focusing on security, performance, observability, and automated testing in an international environment.