AI Native Backend Developer

• B2B contract via Devire (up to 210zł/h net + VAT).
• Remote position in a multilingual environment.
• Opportunity to build a greenfield securities investment platform from the ground up.
• Real influence on the system architecture, technical standards, and development practices.

• At least 3 years of experience in backend service development.
• Commercial experience with Go and TypeScript.
• Experience designing and implementing REST APIs.
• Experience integrating systems with external partners or third-party services.
• Experience implementing logic based on externally defined rules, schemas, or DSLs.
• Practical experience using AI development tools such as Cursor, Claude Code, or AI agents.

Nice to Have

• Experience in securities, capital markets, or asset management.
• Familiarity with market quotes, trade execution, and security master data.
• Understanding of on-chain systems and smart contracts.

Responsibilities

• Develop logic for building portfolios consisting of multiple securities.
• Implement mechanisms that adjust asset weightings based on users’ risk appetite.
• Design, develop, and maintain REST APIs exposing investment data and trading functions.
• Build service logic based on market quotes, trade executions, and security master data.
• Integrate market quotes and event data in cooperation with Data Engineers.
• Implement mechanisms that parse and execute externally defined rules, schemas, or DSLs.
• Use AI development tools and agents to improve development efficiency.