> Markdown version of [/jobs/ext/4622320-senior-software-engineer](https://www.wearedevelopers.com/jobs/ext/4622320-senior-software-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Software Engineer - **Company:** Franklin Custodian Funds, Inc. - **Location:** Boston, MA, United States - **Experience:** Expert - **Salary:** $134,500 - $174,500 - **Contract:** Permanent contract - **Skills:** .NET Framework, C Sharp (Programming Language), Cloud Computing, Continuous Delivery, Continuous Integration, DevOps, Python (Programming Language), Microsoft Visual Studio, Object-Oriented Software Development, Oracle (Applications), Windows PowerShell, Reference Data, Software Deployment, SQL Databases, Subversion, Systems Integration, Extensible Markup Language (XML), Enterprise Data Management, Git, Data Management - **Published:** November 7, 2026 - **Apply:** https://www.juju.com/job/7_86B2D6E58D2C859EF3EF30AF1B8D21CE ## About the Role Our talented, global teams bring expertise that is both broad and unique.From our welcoming, inclusive, and supportive culture to our globally diverse business, we offer opportunities not only to help you reach your potential, but also to contribute to our clients' success.About the departmentJoin the Security Master and Enterprise Data Management team to deliver reliable enterprise reference data through SimCorp GAIN. You will configure scalable data rules, workflows, Golden Copy processing, integrations, and distribution solutions supporting investment operations. You will collaborate with Operations, Data Management, business subject matter experts, Architects, Product Owners, and Technology teams across project delivery and production support.How you will add valueYou will design, configure, test, and maintain enterprise SimCorp GAIN solutions.You will implement acquisition, normalisation, validation, derivation, matching, and selection rules.You will optimise Golden Copy processing and Security Master workflows.You will investigate data issues using GAIN Data Browser and resolve root causes.You will have experience using C#, .NET, Structured Query Language (SQL) in the context of GAIN and investigating and building mapping rules.You will support testing, releases, production deployments, and post-release validation.You will collaborate with stakeholders and mentor colleagues during complex technical investigations.What will help you be successful in this roleExperience, Education & Certifications3+ years of hands-on SimCorp GAIN Studio configuration and development experience.Experience using C# and .NET to build GAIN solutions.Strong Security Master, Reference Data Management, and enterprise data-processing experience.Asset management and SimCorp Dimension experience are preferred.Technical SkillsDeep expertise in GAIN Studio, GAIN Data Browser, rules, workflows, and Golden Copy processing.Strong C#, .NET Framework, Visual Studio, and object-oriented programming skills.Experience with Oracle Structured Query Language (SQL) development and troubleshooting skills.Experience with Extensible Markup Language (XML), schemas, Git or Subversion (SVN), and integrations.Exposure to cloud, Python, PowerShell, DevOps, and continuous integration/continuous delivery tooling is advantageous.Soft SkillsStrong analytical, troubleshooting, stakeholder-management, and communication capabilities.Ability to work independently, lead investigations, share knowledge, and mentor colleagues.Work Schedule & LocationThis position will work a