Delphi Developer

Job Title:

Senior Delphi Developer

Location:

Fully Remote Salary: £55k-£60k

Job Description This Senior Application Developer role sits within the Application Support function and provides operational ownership, support, and technical stewardship for a critical CRM, audit, and invoicing system supporting EMEA business operations. You will act as the technical owner and subject matter expert for a predominantly Delphi-based platform, ensuring its ongoing stability, performance, and resilience. This is a hands-on technical leadership position that combines deep Delphi and Object Pascal expertise with strong skills in SQL Server and Azure SQL, and exposure to .NET

technologies. You will work closely with Dev Ops, infrastructure, cloud, and business stakeholders to maintain high service reliability while driving continuous improvements in maintainability, security, and long-term sustainability. Responsibilities Act as the technical owner of the KVS / KVSIFS platform within the Run organisation, taking primary responsibility for the Delphi and Object Pascal codebase. Ensure high availability, stability, and resilience of the application in a business-critical production environment.

Own incident and problem management, including leading root cause analysis and implementing corrective and preventative actions. Provide 2nd and 3rd line support for complex application issues, ensuring timely resolution and clear communication with stakeholders. Drive continuous improvements in service reliability, incident resolution times, and overall platform performance. Maintain and support the existing Windows-based desktop application, including resolving defects, delivering minor enhancements, and managing technical debt.

Support and maintain the codebase and associated third-party components, ensuring compatibility and stability. Manage application releases, patches, and controlled deployments, ensuring changes are implemented safely and in line with operational standards. Support and optimise the Azure SQL database, including stored procedures, data integrity, and performance tuning. Work with infrastructure and cloud teams to diagnose performance issues, resolve latency and throughput challenges, and support high-volume transactional processing.

Collaborate with infrastructure, cloud, and Dev Ops teams to improve scalability, resilience, and observability of the platform. Support the transition to more modern hosting patterns where appropriate, ensuring the application remains performant and stable during architectural or deployment model changes. Deploy and configure websites and web applications using Microsoft IIS, including managing application pools, bindings, and site configurations. Troubleshoot application and server-level issues in IIS, such as HTTP errors and application pool failures, and support secure configurations including SSL certificates and authentication methods.

Support and monitor all application integrations, including REST APIs, external audit and certification platforms, and invoicing and payment systems. Troubleshoot and resolve data synchronisation issues and integration failures that impact business operations. Ensure the platform operates within defined security and network controls, validating secure data access and API-based external communications. Support the platforms technical and security posture, contributing to audit, compliance, and assurance activities.

Maintain comprehensive and up-to-date documentation, including architecture diagrams, support runbooks, known errors, and recovery procedures. Reduce key-person dependency by ensuring knowledge is documented, shared, and accessible across teams. Act as a trusted technical partner to business stakeholders, IT Operations, and cloud and infrastructure teams. Provide clear communication on incidents, risks, technical limitations, and platform sustainability, translating technical concepts into clear business language.

Operate effectively within a complex and legacy environment while aligning with modern engineering and operational practices. Essential Skills Strong, hands-on experience with Delphi and Object Pascal in enterprise or business-critical applications. Proven experience supporting and maintaining legacy or long-lived codebases, particularly VCL-based applications. Strong SQL Server and Azure SQL capability, including performance tuning, troubleshooting, and support for high-volume transactional workloads.

experience supporting and developing web applications and API endpoints, including REST APIs. experience operating applications in production environments with high availability and reliability requirements. Solid understanding of incident, problem, and change management within a Run / Operate model. Strong problem-solving and analytical skills, with the ability to diagnose and resolve complex issues across application, database, and integration layers. Self-motivated and proactive approach, with the ability to work…