Senior Systems Developer

Senior Systems Developer (full time, permanent), London

Our client is based in central London and is number one in high end office fit out in the UK.

Role overview

A highly skilled Senior Developer to join the IT department and take ownership of internal business systems and web platforms. You’ll be working on a custom-built internal platform developed in PHP (Laravel) with a PostgreSQL backend, as well as supporting and maintaining several WordPress-based websites. The ideal candidate will have deep technical expertise in Linux environments, Docker, web server technologies (Nginx/Apache), and DNS/application communication configuration.

Key Accountabilities

• Lead the development and enhancement of internal business systems built on PHP Laravel with a PostgreSQL and Azure blobstore backend.
• Perform ongoing operational maintenance, debugging, and performance tuning of existing applications and webspace.
• Provide technical support and issue resolution for internal users, including those under pressure or facing critical issues.
• Manage and maintain company websites built on WordPress, including plugin updates, theme customizations, and security hardening.
• Administer and troubleshoot Linux-based systems that host internal applications and services.
• Build, deploy, and manage containerized applications using Docker.
• Configure and maintain web servers (Nginx) for optimal performance and security.
• Assist with firewall configuration and troubleshooting to ensure secure and reliable access to internal and external services, APIs and repos.
• Use Git repositories for version control, code collaboration, and structured deployment workflows.
• Implement and enforce Git workflow best practices, including feature branching, pull requests, code reviews, and release tagging.
• Collaborate with the IT team to ensure seamless integration between systems and infrastructure.
• Document system architecture, workflows, and development processes.
• Ensure quality, maintainability, and adherence to best practices.
• Mentor and support junior developers as the team grows, fostering a collaborative and high‑performance work environment.
• Work closely with individual departmental stakeholders to understand their work and suggest system improvements to promote system interaction efficiency.

Required skills and attributes

• 5+ years of experience in software development with a strong focus on PHP (Laravel) and PostgreSQL.
• Extensive knowledge of ERP and CRM systems within businesses.
• Expert-level knowledge of Linux-based systems, including shell scripting, system services, and performance tuning.
• Hands‑on experience with Docker for complex business systems and production deployments.
• Proficiency in configuring and managing Nginx web servers.
• Knowledge of web domains and registrars, domain records configuration.
• Familiarity with physical and web firewall technologies and network security.
• Strong experience with Git, including structured workflows (e.g., Git Flow), branching strategies, and CI/CD integration.
• Solid understanding of MVC architecture, RESTful APIs, and modern web development practices.
• Experience with WordPress development and administration.
• Strong troubleshooting and debugging skills across the full stack.
• Ability to work independently and manage multiple priorities in a fast‑paced environment.
• Excellent communication skills, especially when dealing with non‑technical stakeholders.
• Knowledge of Microsoft Power Platform and PowerApps.
• Understanding of data flows and data migration topologies, utilizing tools such as Azure Data Factory, SSMA, SSIS.
• Working knowledge of APIs and data transfer between systems via call topologies.

Desirable experience and qualifications

• Experience in construction, architecture, or design industries.
• Familiarity with container orchestration within Docker.
• Knowledge of front‑end frameworks (e.g., Vue.js, React) is a plus.
• Degree in Computer Science, Software Engineering, or related fields.

Job details: Senior Systems Developer, full‑time, permanent, London.

Compensation: £60,000.00-£75,000.00

Seniority level: Mid‑Senior level. Employment type: Full‑time. Job function: Engineering and Information Technology. Industries: Staffing and Recruiting.