Full Stack Developer

IBM; City of Westminster; On-site; GBP 35,000 - 40,000; Full time

Job summary

A leading technology firm in City of Westminster is seeking a Full Stack Developer to enhance enterprise web platforms. This role involves designing, developing, and maintaining features across various CMS frameworks, upholding security standards, and optimizing performance. The ideal candidate should excel in PHP, Node.js, and SQL, with a strong grasp of web development practices. This position offers a competitive salary and a comprehensive benefits package, making it an exciting opportunity for dedicated professionals.

Benefits

33 days holiday

Pension

Life assurance

Employee assistance programme

Wellbeing support

Flexible benefits scheme

Qualifications

• Proficient in designing and deploying front- and back-end technologies.
• Strong foundation in web and application development.
• Experience in maintaining custom extensions and modules.

Responsibilities

• Design, build, and deploy front- and back-end features.
• Maintain business-as-usual (BAU) updates and defects across platforms.
• Ensure strict security and compliance standards are met.

Skills

PHP

Node.js

JavaScript

SQL

C++

Python

Tools

WordPress

Custom CMS

Git

Job description

Overview

£35,000-£40,000 per annum DOE, plus car / car allowance. Benefits: 33 days holiday, pension, life assurance, employee assistance programme, wellbeing support, and flexible benefits scheme.

About the Job

Youll have an important part to play delivering high quality features and seamless integrations across our enterprise web platforms. Here at Unipart we dont just have a way of working, we have The Unipart Way. It allows everyone in our team to pursue their own personal and professional goals to a world class level, through Unipart\'s From Gate to Great training and development program.

As a Full Stack Developer, you will own the day-to-day maintenance, uphold strict security, performance, and reliability standards, and actively develop platforms such as Intranets and inward/outward-facing websites across varying CMS frameworks (e.g., WordPress, headless, custom), integrations, and supporting services.

As part of your key responsibilities youll:

• Design, build, and deploy front- and back-end features (e.g., PHP/Node/JS, SQL), including implementing and maintaining system integrations (e.g., ERP/CRM, SSO)
• Take primary ownership of all business-as-usual (BAU) maintenance, small enhancements, and defect fixes across intranet and public-facing websites, adhering to agreed SLAs
• Maintain custom extensions, modules, and themes across multiple CMS stacks, following professional development practices like Git-based workflows and semantic versioning
• Uphold strict security and compliance standards by running regular checks, promptly patching vulnerabilities, and enforcing least-privilege access
• Focus on performance by meeting Core Web Vitals targets, optimising code, and monitoring uptime and error budgets
• Contribute to a defined quality and release process, including using CI checks, maintaining technical documentation, and following defined rollback plans
• Work with the Development Manager on the product roadmap, prioritisation, and acceptance criteria, providing clear estimates for delivery
• Decide implementation details and minor refactors; escalating scope shifts, architectural changes, and timeline risks
• Measure success by SLA adherence, release quality (defect escape rate), security posture, delivery predictability, and tech-debt reduction
• Engage in weekly check-ins, maintain a rolling two-week delivery plan, produce a monthly report on releases/incidents, and conduct quarterly reviews

About You

You\'d love you to have the following skills and experience, but please apply if you think you\'d be able to perform well in this role!

• Proven proficiency in designing, building, and deploying features using front- and back-end technologies (PHP/Node/JS, SQL), with a strong foundation in Web Development and Application Development
• Able to leverage diverse technologies, including Java, APIs, and data visualization platforms; knowledge of languages such as JavaScript, C++, Python, and other popular languages is a significant advantage
• Expertise in maintaining custom extensions, modules, and themes across multiple CMS stacks and ensuring compatibility
• Ability to take primary ownership of all BAU updates, enhancements, and defect fixes, meeting agreed-upon service level agreements (SLAs)
• Strong focus on security, including vulnerability patching, monitoring, and enforcing least-privilege access across platforms
• Experience in optimising code and infrastructure to meet performance targets (e.g., Core Web Vitals) and monitoring uptime/error budgets
• Strict adherence to professional practices (Git, peer review) and proven ability to contribute to a defined quality and release process (e.g., CI checks, rollback plans)

Our recruitment and selection process has been developed to ensure that it is consistent, fair and provides equality of opportunity - all selection decisions are based solely on technical and behavioural competencies. We do not discriminate on the grounds of race, colour, or nationality, ethnic or national origins, sex, gender reassignment, sexual orientation, marital or civil partnership status, pregnancy or maternity, disability, religion or belief, age or any other current or future protected characteristic as defined in the Equality Act. As an organisation we also promote an environment which encourages diversity of characteristics and thought, where you feel included, safe and confident to be the best version of yourself and do your best work every day.

This description may include examples of roles or job descriptions in the industry that use generic phrasing to describe responsibilities. If any aspect does not match your experience or expectations, please apply and discuss with us.

Note

IsExpired: false