Senior Software Engineer (AI)

TL;DR

Senior Software Engineer (AI) (AI Engineering): Designing and deploying AI-powered solutions, including agentic systems and RAG architectures, with an accent on LLM integration and cloud-native backend services. Focus on building robust orchestration frameworks, optimizing system reliability, and scaling non-deterministic AI applications.

Location: Hybrid in Sofia, Bulgaria

Company

A global data and technology company providing opportunities for people and businesses across various sectors including financial services and healthcare.

What you will do

• Design, build, and deploy AI-powered solutions such as AI agents, RAG systems, and MCP servers.
• Develop agentic systems focusing on tool usage, memory management, and orchestration.
• Integrate LLMs into production, optimizing for quality, latency, cost, and scalability.
• Implement evaluation, testing, and monitoring frameworks for AI performance and reliability.
• Build cloud-native backend services to support AI application workflows.
• Lead technical design and implementation for maintainable and secure solutions.

Requirements

• 5+ years of professional software development experience with Java.
• Proficiency in Python for AI, automation, or data-processing workloads.
• Proven experience building production-grade AI applications using Large Language Models.
• Hands-on expertise with AI agents, RAG architectures, and tool calling.
• Experience with frameworks like Spring AI or LangChain.
• Strong background in microservices and cloud-native architectures.

Culture & Benefits

• Professional growth through career pathways and unlimited access to educational courses.
• Comprehensive social package including life and health insurance, food vouchers, and flex allowance.
• Generous time off with 25 days paid vacation plus additional birthday and social responsibility leave.
• Flexible working hours and Home Office options.
• Inclusive, award-winning culture recognized as one of the World's Best Workplaces.