FULL-STACK DEVELOPER

Sigma Consulting Group; Greater London; Hybrid; GBP 45,000 - 55,000; Full time

Benefits offered by this job

Equity

Meaningful ownership

Clear career growth path

Job summary

Sigma Consulting Group seeks a Founding Engineer to join their London team, focusing on a WordPress/WooCommerce-based marketplace platform. You'll develop user-facing features and backend systems, collaborating directly with the leadership team to streamline healthcare procurement.

The position requires 3+ years of full-stack development experience, proficiency in PHP, and familiarity with database management. This hybrid role offers meaningful ownership, equity, and a clear path to future leadership opportunities.

Qualifications

• 3+ years of full-stack development experience.
• Strong PHP proficiency with WordPress/WooCommerce.
• Experience designing and integrating RESTful APIs.

Responsibilities

• Develop and enhance a WordPress/WooCommerce-based marketplace platform.
• Build custom features including quote requests and supplier matching.
• Implement secure payment systems and escrow functionalities.

Skills

Full-stack development

PHP proficiency

WordPress/WooCommerce experience

Database design and optimisation

RESTful API integration

Secure coding practices

GDPR compliance

Tools

MySQL/PostgreSQL

Stripe

PayPal

YITH WooCommerce plugins

Job description

Location: London (Hybrid) (UK-based)
Salary: £50,000 + Equity
Department: Engineering
Job Type: Full-Time
Category: Hybrid

About Zenrox

Zenrox Healthcare UK is developing an AI-powered marketplace connecting healthcare facilities with MHRA-compliant medical equipment suppliers. Our platform, ZenroxIQ, enhances procurement through intelligent matching, automated compliance, and predictive analytics for NHS trusts and private hospitals.

The Opportunity

Join us as a Founding Engineer contributing directly to the architecture, design, and development of our marketplace platform. Youll work across the full stack, delivering user-facing features and backend systems that streamline procurement for healthcare organisations.

Key Responsibilities

Develop and enhance a WordPress/WooCommerce-based marketplace platform.

Build custom features including quote requests, supplier matching, and order workflow management.

Develop admin dashboards for analytics, compliance monitoring, and supplier management.

Implement secure payment systems and escrow functionalities.

Develop and maintain API integrations with third-party services (payments, compliance verification).

Optimise platform performance, scalability, and user experience.

Collaborate with the CTO on technical architecture, design, and strategy.

What You Bring

3+ years of full-stack development experience.

Strong PHP proficiency with professional WordPress/WooCommerce development experience.

Database design and optimisation experience (MySQL/PostgreSQL).

Experience designing and integrating RESTful APIs.

Strong understanding of secure coding practices and GDPR compliance.

Ability to work independently, make pragmatic technical decisions, and take ownership of tasks.

Ideal Background

Experience building marketplace or e-commerce platforms.

Payment gateway integration experience (Stripe, PayPal).

Experience developing B2B or enterprise-level software.

Familiarity with YITH or similar WooCommerce plugins.

Exposure to healthcare or other regulated industries.

Why Join Zenrox

Foundational engineering role with meaningful ownership and equity.

Opportunity to build essential healthcare procurement infrastructure.

Freedom to design and implement solutions end-to-end.

Direct collaboration with the founding leadership team.

Clear path to future technical leadership roles as the team grows.