Backend Developer

CFP Energy (UK) Ltd; Greater London; On-site; GBP 80,000 - 100,000; Full time

Job summary

A cutting-edge tech firm in Greater London is seeking a Backend Developer to design and develop back-end software solutions for cybersecurity applications. You will build scalable architectures using PHP 8.3 and Laravel, develop APIs, and collaborate with cross-functional teams. The ideal candidate has strong experience with PHP/Laravel, database expertise, and a knowledge of system security. Enjoy a comprehensive benefits package, including 25 days annual leave, flexible working arrangements, and private health care.

Benefits

25 days annual leave plus Bank Holidays

Flexible working arrangements

Private health care

Company pension scheme

Life and medical insurance

Eyecare scheme

Employee Assistance Programme

Cycle to Work scheme

Family-friendly policies

Qualifications

• Proven experience as a Backend Developer.
• Strong experience with PHP/Laravel and API development.
• Database expertise with PostgreSQL and ClickHouse (or similar).

Responsibilities

• Design, develop, and maintain back-end software solutions for cybersecurity applications.
• Build scalable server-side architectures using PHP 8.3, Laravel Octane, and Swoole.
• Develop and optimise APIs for integration with external services.

Skills

Backend Development

PHP/Laravel

API Development

PostgreSQL

ClickHouse

Docker

System Security

Problem Solving

Communication

Tools

Datadog

Laravel Horizon

Agile Methodologies

Job description

Join our Product Development team at Cyber Energia and help build scalable, high-performance applications that protect renewable energy assets against cyber threats.

We’re seeking a Backend Developer who thrives on designing robust architectures, building secure APIs, and optimising data flows across our cybersecurity and energy management solutions.

What you’ll do:

• Design, develop, and maintain back-end software solutions for cybersecurity applications.
• Build scalable server-side architectures using PHP 8.3, Laravel Octane, and Swoole.
• Develop and optimise APIs for integration with external services (Auth0, AbuseIPDB, Shodan, Tenable, Xero, Flowise).
• Work with relational (PostgreSQL) and columnar (ClickHouse) databases for transactional and analytical workloads.
• Implement caching and queuing with Redis + Laravel Horizon.
• Write clean, functional, and maintainable code with SOLID and best practices.
• Test, debug, and upgrade software using PHPUnit and static analysis.
• Implement observability with Datadog (logs, metrics, traces).
• Collaborate with product managers, frontend developers, and cross-functional teams to deliver innovative solutions.
• Maintain technical documentation for smooth project handover.

What we’re looking for:

• Proven experience as a Backend Developer.
• Strong experience with PHP/Laravel and API development.
• Database expertise with PostgreSQL and ClickHouse (or similar).
• Experience with Docker and containerized workflows.
• Knowledge of system security and data protection practices.
• Good problem-solving, organizational, and communication skills.

Bonus points if you have:

• Experience with cloud platforms (Azure).
• Background in cybersecurity applications or OT/ICS monitoring.
• Familiarity with Agile methodologies and modern DevOps tools.
• Exposure to frontend technologies (React/Next.js, TypeScript).

Why you’ll love working here:

We also offer a comprehensive benefits package, including:

• 25 days annual leave plus Bank Holidays
• Flexible working arrangements
• Private health care
• Company pension scheme
• Life and medical insurance, eyecare scheme
• Employee Assistance Programme
• Cycle to Work scheme
• Family-friendly policiesRecruit and Reward scheme