> Markdown version of [/jobs/ext/2178095-mainframe-developer](https://www.wearedevelopers.com/jobs/ext/2178095-mainframe-developer). 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). --- # Mainframe Developer - **Company:** Insight Global - **Location:** Dover, DE, United States - **Experience:** Starter - **Contract:** Permanent contract - **Skills:** .NET Framework, Adaptable Database Systems, COBOL (Programming Language), Databases, Mainframes, Microsoft SQL Server, Software Application Programming - **Published:** August 22, 2026 - **Apply:** https://dejobs.org/x/x/14F1B03D660247978F9A793A598FD4C7/job/ ## About the Role * 1-3+ years of experience developing applications using Natural * 1-3+ years of experience working with Adabas databases * Experience with COBOL * Strong written and verbal communication skills * Experience with .NET development * Experience supporting mainframe-to-.NET migration projects * SQL Server experience ## Description A client of Insight Global is seeking a Mainframe Developer to join their team. This individual will support, maintain, and enhance applications within a Natural/Adabas environment. Responsibilities include analyzing requirements, developing and testing code, troubleshooting production issues, and collaborating with technical and business stakeholders. The ideal candidate will have a strong foundation in mainframe development and be interested in supporting future modernization initiatives as the organization evaluates a transition to .NET technologies. ## Related Videos - [".Net is too slow" was not an option](https://www.wearedevelopers.com/videos/100176-net-is-too-slow-was-not-an-option) - [Cloud as the new mainframe: why the cloud hype does not reflect the dev reality](https://www.wearedevelopers.com/videos/797-cloud-as-the-new-mainframe-why-the-cloud-hype-does-not-reflect-the-dev-reality) - [This Is Not Your Father's .NET](https://www.wearedevelopers.com/videos/967-this-is-not-your-father-s-net) - [Kubernetes and Microservices with Multi-Model Databases](https://www.wearedevelopers.com/videos/382-kubernetes-and-microservices-with-multi-model-databases) - [Migrating from COBOL with AI: A Moonshot Demo](https://www.wearedevelopers.com/videos/1531-migrating-from-cobol-with-ai-a-moonshot-demo) - [Building with IBM Bob](https://www.wearedevelopers.com/videos/100275-building-with-ibm-bob) ## Related Articles - [What Are The Top Skills Required For Azure Developers?](https://www.wearedevelopers.com/magazine/77-what-are-the-top-skills-required-for-azure-developers) - [Making Data Warehouses Fast: A Developer’s Story](https://www.wearedevelopers.com/magazine/107-making-data-warehouses-fast-a-developer-s-story) - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [How to land a developer job in Amsterdam](https://www.wearedevelopers.com/magazine/36-how-to-land-a-developer-job-in-amsterdam) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [93 Java Interview Questions You Should Prepare For](https://www.wearedevelopers.com/magazine/14-93-java-interview-questions-you-should-prepare-for)