Java AI Sr. Developer

Java AI Sr. Developer

Location: Hybrid / 2 days in London office

Role: Perm / Contract

Experience : 8+ Yrs

Work with enterprise clients to design, build, and ship production-grade generative AI solutions — agents, RAG systems, and AI-powered workflows — from scoping through deployment.

Responsibilities

• Build and deploy agentic AI systems using spec-driven development and evals-first delivery
• Design RAG pipelines, skills, and MCP-based integrations with enterprise systems
• Define eval frameworks and guardrails; own quality from POC to production
• Choose the right architecture — LLM, SLM, or hybrid — for cost, latency, and accuracy
• Lead technical conversations with client stakeholders

Must Have

• 8+ years of software engineering with Java EE, Spring Boot and AWS Stack, including 3+ years building LLM-powered applications in production
• Hands-on experience with Java Virtual Threads
• experience with Generative AI, particularly AI Agents, RAG, Tools, and Evals.
• Hands-on experience using coding agents in your current role
• Working knowledge of Creating AI Skills, Command, Hooks etc. — building, structuring, and maintaining skill libraries for AI agents
• Hands-on with agentic AI tools (Claude Code or AWS Kiro), plus agents, tool use, MCP, and RAG architectures
• You write and review code with AI daily — and are eager to help customers adopt the same way of working
• Proven track record designing and running evals (benchmarks, LLM-as-judge, HITL)
• Strong grasp of LLM/SLM trade-offs, context engineering, and agentic engineering practices
• Python and/or TypeScript proficiency; strong client-facing communication

Nice to Have

• Public thought leadership: talks, posts, or open-source contributions in applied AI

Hands-on exposure and knowhow in Payments/ high volume fast paced Financial services

Interested candidate can share their updated CV at hr@marketcloud.co.uk