Senior Delphi / SQL Developer – £(Up To 70K) – Permanent – (Essex / Hybrid / 2 Days in The Office (Mon/Wed)

We are seeking an experienced Senior Delphi / SQL Developer to join our client's growing development team and work on large‑scale, business‑critical enterprise applications used by global clients. This is a senior technical role focused on maintaining, enhancing, and modernising a complex Delphi‑based system with a strong SQL Server backend.

If you enjoy solving complex problems, working with mature codebases, and contributing to long‑term system stability, this role will suit you perfectly.

Key Responsibilities

• Maintain, support, and enhance existing Delphi enterprise applications.

• Diagnose and resolve complex defects, performance issues, and system bottlenecks.

• Work closely with business users to translate requirements into technical solutions.

• Produce clear documentation for updates, fixes, and new features.

• Participate in sprint planning, estimation, and code reviews.

• Ensure all development follows secure coding and internal QA standards.

• Contribute to system upgrades, transitions, and modernisation initiatives.

Essential Skills & Experience

• 10+ years commercial Delphi development (XE2, XE10 or later).

• 10+ years Transact‑SQL / MS SQL Server experience.

• 3+ years .NET C# experience ideally.

• Team Leadership and mentoring experience

• Strong experience with complex, data‑driven applications.

• Proven background maintaining or upgrading legacy systems.

• Experience with visually inherited UIs.

• Strong debugging, optimisation, and performance‑tuning skills.

• Experience working within Agile, Waterfall, or hybrid SDLC environments.

• Familiarity with version control (Git, SVN, etc.).

• Experience collaborating with QA, Infrastructure, and business teams.

Desirable Knowledge

• Delphi 3rd‑party components.

• Windows desktop application development.

• Multi‑tier architectures, REST/SOAP services, Windows APIs, COM.

• Secure coding best practices.

• Leadership or mentoring experience.

Education

• Degree in Computer Science, Software Engineering, or related field OR

• Equivalent professional experience.

• Relevant certifications are a plus.

What’s on Offer

• Opportunity to work on mission‑critical enterprise systems.

• Join a highly skilled, supportive development team.

• Long‑term stability with scope for modernisation and technical influence.

• Competitive salary + benefits

• Hybrid- 3 Days Working from Home.

Send Cv To john.campbell@octad.co.uk

No sponsorship is offered with this, position now or in the future. You must be UK based with UK working rights.