Principal AI System Engineer - Python

Position : Principal AI Systems Engineer

Experience : 8+ Years

Location : New Delhi

Employment Type : Full-Time (Hybrid)

About the Role :

Responsibilities :

Architect, build, and own AI systems that automate expert-intensive technical workflows end-to end from CLI frameworks, MCP servers, and agent tooling through to production deployment, business outcome tracking, and continuous improvement. You solve real business problems with AI, ensure solutions are fully implemented and adopted, and measure whether they are actually working.

System Architecture :

- Own end-to-end architecture of AI automation systems : workflow decomposition, component communication, human checkpoints, and failure behaviour

- Design and build internal CLI frameworks, reusable libraries, and agent scaffolding

- Author and maintain agent instruction files (SKILL.md, CLAUDE.md, system prompts) and MCP server definitions

- Configure Claude Code and Codex CLI environments : MCP wiring, tool permissions, slash commands, and engineering standards

- Evaluate and document architectural trade-offs across reliability, latency, cost, and maintainability

Pipeline Development :

- Build production-grade AI pipelines in Python : orchestration, structured prompting, context assembly, schema validation, and retry strategies

- Integrate AI systems with external tooling version control, build pipelines, SDKs, compliance .

Prompt & Context Engineering :

- Design, version, and maintain system prompts and agent instructions as first-class engineering artefacts

- Own output schema design and prompt regression testing with a maintained ground-truth eval set

- Engineer context windows with precision balancing accuracy, token cost, and latency through compression and selective retrieval

- Partner with the RAG Engineer to define retrieval requirements what knowledge is needed, under what conditions, and at what granularity

Governance & Technical Leadership :

- Implement full audit trails inputs, tools called, outputs, and human review triggers

- Enforce versioning of all agent instructions and system prompts as engineered artefacts with controlled rollout

- Set the technical standard for AI development across the organization architecture patterns, eval practices, and quality gates

Requirements :

- Proven track record of building production AI automation systems from scratch end-to-end from architecture through deployment.

- Hands-on expertise with Claude Code, Codex CLI, Cursor, or equivalent including MCP server configuration and agent instruction authoring

- Experience designing and deploying MCP servers and custom tools : tool schema, authentication, and permission boundaries

- Experience building internal CLI frameworks, agent scaffolding, and reusable libraries that others build on.

- Experience creating internal tooling and automation that measurably improved engineering team efficiency reducing manual processes and accelerating workflows

- Experience working with data scientists and domain experts to implement AI solutions that measurably improved team productivity

- Deep prompt and context engineering : system prompts, few-shot design, chain-of-thought, token budget management, and prompt versioning

- Proficiency with LLM orchestration frameworks LangChain, LangGraph, LlamaIndex, AutoGen, or equivalent

- Experience building AI evaluation frameworks : test suites, regression benchmarks, LLM-as-judge, and production quality monitoring

- Production Python engineering : modular, testable, well-logged code with proper error handling

- Cloud platform experience (AWS, Azure, or GCP) : deploying and monitoring AI workloads with containerisation

Bonus Points :

- Experience integrating AI systems with external APIs tool definition, permission management, and failure handling