AI Native Backend Developer

Job Description

What we offer 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. Requirements 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.