Sr Lead Software Engineer - Artificial Intelligence

Build and operate the AI toolchain that is accelerating mainframe modernization at scale.

As an Sr Lead Software Engineer within Core Processing, Wealth Management Technology, you will design, build, and ship the agentic systems that ingest decades of mainframe logic and produce verified, production-ready modern services.

You work directly alongside domain SMEs and the ED lead to turn legacy COBOL, JCL, DB2, and batch schedules into structured specifications - then drive those specs through agent-accelerated delivery into the target platform.

You are a builder first: comfortable architecting multi-agent orchestration one day and debugging a prompt chain against production edge cases the next.

You have deep proficiency extending and operating coding agents (Claude Code, Codex, Copilot), and you bring the engineering rigor to make AI outputs reliable at enterprise scale.

You thrive on hard problems, move fast, and care deeply about shipping software that works.

Job Responsibilities


* Builds and operates the spec generation pipeline - Implement artifact ingestion (COBOL source, JCL, job schedules, DB2 schemas, SME-captured knowledge), chunking strategies, and RAG pipelines that produce structured calculation and workflow specifications validated by domain experts.


* Develops agentic workflows for code translation and migration - Design, implement, and iterate on multi-agent systems that translate legacy logic into target-state code (Kotlin/JVM).

Build orchestration layers, tool-use patterns, and guardrails that ensure output correctness for financial calculations.


* Builds evaluation and verification infrastructure - Create automated test harnesses that compare migrated calculation outputs against legacy results.

Implement parity testing frameworks, regression suites, and confidence scoring to gate production cutover decisions.


* Contributes to the standard calculation runtime - Help build and extend the target platform that migrated calculations deploy into.

Ensure the runtime supports deterministic, immutable, auditable execution.


* Partners with domain SMEs - Embed with mainframe subject-matter experts across Credit, Money Market & Mutual Funds, Statements & Tax, and IBOR to validate agent outputs, refine prompt strategies, and close knowledge gaps in specifications.


* Extends ETL and CDC pipelines for agent workflows - Build and integrate event sourcing, CDC (change data capture), and data pipelines that support end-to-end migrated workflows, including upstream/downstream dependency mapping.


* Operates AI systems in production - Own LLMOps for the toolchain: deployment, monitoring, cost management, latency optimization, token budget management, and incident response.

Ensure reliability and compliance for 24/7 operation.


* Iterates rapidly and ships continuously - Work in tight build-measure-learn cycles.

Prototype quickly, instrument everything, and make data-driven decisions about agent architectures...