Senior Legacy Migration Engineer (C#, .Net)

Start date

2026-09-07

End date

2026-12-31

Position Summary

We are hiring a Senior Software Engineer to execute migration and stabilization work across business-critical insurance and pension integrations in our platform.

Role Type and Scope

Individual contributor role with end-to-end technical ownership for assigned migration flows

Expected to work independently in complex legacy environments

Collaborates with infrastructure, DBA, MQ, and operations teams

No people management responsibility

Core Mission

Deliver safe and fast migration outcomes for legacy and hybrid services, with minimal business disruption and clear rollback readiness.

Mandatory Technical Skills

- C# and .NET Framework 4.x (3.5 exposure is a plus)

- WCF, SOAP, ASMX service maintenance and migration

- IIS deployment and troubleshooting (application pools, bindings, config)

- Windows Services and Task Scheduler based batch operations

- SQL Server troubleshooting and secure configuration handling

- IBM MQ integration fundamentals (connectivity, queue and channel diagnostics)

- PowerShell automation for deployment, verification, and operations

- TFS & Git based workflows and CI/CD pipeline collaboration

- General knowledge on PKI (Public Key Infrastructure)

Preferred Technical Skills

Candidate should have at least 2 of the following:

- C or C++ maintenance in Windows service environments

- Mainframe adjacent integration patterns (EBCDIC and file bridge patterns)

- Container and Kubernetes exposure for coexistence with modern APIs

- Production observability and incident response in regulated environments

- Legacy security hardening (service accounts, encrypted settings portability)

Key Responsibilities

Execute migration tasks across legacy and modern components

Validate environment parity and eliminate runtime blockers before cutover

Diagnose and fix production critical issues in services, queues, and integrations

Build and run end-to-end migration verification and rollback tests

Produce concise runbooks and deployment notes for repeatable execution

Ensure all acceptance criteria are met before go or no-go decisions

Candidate Evidence We Want

Proven migration delivery in legacy enterprise systems with low incident impact

Direct IIS plus WCF or ASMX cutover experience in production

Practical MQ troubleshooting and backlog handling under pressure

Clear examples of rollback strategy and execution in real releases

Demonstrated ability to balance migration speed with operational safety