5D AGO

Legacy Codebase Migration Expert

Mercor / Legacy Codebase Migration Expert

RATE

$200/HR

LOCATION

REMOTE (GLOBAL)

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DESCRIPTION

All application steps are reused whenever another role requires the same step, so you never have to upload your resume or take the same interview twice Mercor is partnering with a frontier AI research lab to engage experienced software engineers with deep expertise in legacy codebase migration and modernisation. We are looking for engineers who have personally executed complex migrations across large, production-grade systems, particularly in financial services, fintech/payments, insurance, healthcare, telecom, large technology companies, and other mission-critical enterprises. Strong hands-on experience with production migrations is the primary

REQUIREMENTS

▸What You'll Do
▸Design, implement, review, and evaluate complex codebase migration and modernisation tasks.
▸Analyse legacy code, dependencies, APIs, databases, build systems, and infrastructure to determine safe migration approaches.
▸Preserve functionality, backwards compatibility, data integrity, security, and performance during migrations.
▸Develop tests and validation strategies to identify migration regressions and behavioural differences.
▸Evaluate AI-generated migration solutions for correctness, completeness, maintainability, and production readiness.
▸Relevant Migration Experience
▸Candidates should have deep expertise in one or more of the following: