Uk javascript developer Work, Jobs in London, Eng (with Salaries)

IT Integrations Developer
Transact —London
- Up to £80,000 a year
- Azure
- Computer Science
- SQL
Lead Software Engineer - Frontend Engineering - React Native
JPMorganChase —London
- Full-time
- English
- JavaScript
- Software development
Creative Technologist - AI Workflow Developer (6 month FTC)
T&P —London
- Hybrid work
- Azure
- Master's degree
- AWS
Web Developer (6m contract)
LocalStack —London
- £13,000 - £17,600 a month
- Remote
- JavaScript
- AI
- Marketing
Quick apply
10d
Shopify Developer
Medik8 —Borehamwood
- £55,000 - £60,000 a year
- Hybrid work
- JavaScript
- APIs
- HTML
- Employee discount
Quick apply
E-commerce UX & UI Lead / Senior WooCommerce Developer
Photonic Universe —Orpington
- Up to £75,000 a year
- Full-time
- ERP systems
- Business development
- JavaScript
Quick apply
5d
Senior Front End Web Developer
Palantir —London
- SQL
- JavaScript
- APIs
Quick apply
AI and App Development Assistant
INDO-UK FILM COMPANY LIMITED —Brentford
- £24,500 - £24,750 a year
- Temporary
- Azure
- Java
- SQL
Quick apply
Front-End Angular Software Engineer
Trimble —London
- Full-time
- Hybrid work
- Computer Science
- Engineering
- AWS
Java Full Stack Developer | Microservices. Kafka | London
Infosys —London
- Azure
- DevOps
- Java
Frontend Engineer - Engine by Starling
Starling —London
- Full-time
- Hybrid work
- AWS
- JavaScript
- APIs
- Annual leave
- Employee discount
Quick apply
5d
Java Full Stack Developer (Camunda) - London, UK
Capgemini —London
- Computer Science
- Java
- SQL
Developer
Unboxed —London
- From £53,182 a year
- Hybrid work
- SQL
- AWS
- JavaScript
- Flexible schedule
Software Developer-Backend (SFIA4)
Zaizi —London
- £60,000 - £75,000 a year
- Full-time
- Hybrid work
- DevOps
- SQL
- AWS
- Annual leave
- Work from home
Quick apply
UI Engineer (1 year Fixed Term Contract)
Nice —London
- Hybrid work
- Management
- JavaScript
- APIs
Full Stack Engineer (Python and React)
Pwc UK —London
- Full-time
- Hybrid work
- Azure
- AWS
- JavaScript
Java UI Developer
FalconSmartIT —London
- Azure
- Java
- AWS
Quick apply
Senior Full Stack Developer
Pure Human Resources —London
- £55,000 - £70,000 a year
- Full-time
- Remote
- Azure
- DevOps
- SQL
C#, .NET, Azure Developer
InfoUrge Technologies UK —London
- £350 - £400 a day
- Full-time
- Hybrid work
- Azure
- DevOps
- SQL
Quick apply
12d
Software Engineer
Upscope —London
- Computer Science
- Engineering
- SQL
- Gym membership

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uk javascript developer jobs near london, eng

IT Integrations Developer

Transact -
London

Apply Now

Job details

Up to £80,000 a year

Qualifications

Azure
Computer Science
CSS
Relational databases
Laravel
PaaS
Git
Bash (Unix shell)
SQL
PHP
OOP
JavaScript
Perl
REST
Symfony
APIs
Linux
GraphQL
Python
HTML

Full job description

In this role, you will act as a hands-on developer building and supporting modern applications and integrations across our internal systems and external SaaS platforms.

Working cross-functionally with Development, Engineering & Project teams, your primary focus will be developing application logic and enabling integration between systems using established programming languages (including PHP) and Azure PaaS services.

You will support a range of integration approaches, including direct application integration and API-based solutions where appropriate, ensuring solutions are scalable, secure, and maintainable.

Key Responsibilities:

Develop and maintain intranet applications using relevant web frameworks.
Provide user support and resolve application issues as required.
Design and implement secure API integrations and data flows (e.g. REST, GraphQL).
Contribute to integration design, selecting appropriate approaches (direct integration, API-based, or event-driven) based on business needs.
Troubleshoot, test, and maintain systems to ensure performance, reliability, and security.
Develop cloud-based solutions using Azure PaaS services (e.g. App Services, Azure Functions).
Contribute to CI/CD pipelines and deployment processes, supporting the build, test, and release of applications within Azure environments. This includes aspects of versioning, configuration, and environment management.
Apply “Secure by Design” and secure coding practices across all solutions.
Produce and maintain clear technical documentation for APIs, integrations, and processes.

We’re looking for a candidate with a degree (or equivalent) in Computer Science or a related field, alongside a strong understanding of cloud application design concepts, including Azure PaaS and serverless approaches. You will have strong expertise in PHP (v8+) and object-oriented programming, along with hands-on experience using at least one PHP framework such as Laravel, Symfony or Yii2. Proficiency in JavaScript, HTML and CSS is essential, as is experience working with relational databases and SQL. You should be confident using version control systems (ideally Git), familiar with Linux administration , and comfortable working with scripting languages such as Bash, Python or Perl.

About Us

Transact is a leading UK investment wrap platform for financial advisers and their clients. Our culture is collaborative, inclusive and open-minded. We work hard to continually challenge the way we do things to maintain our market leading status.

As a customer-centric and client focused business, we put our clients, like Mrs Miggins, at the heart of everything we do.

Our platform enables clients and their advisers to manage their financial portfolio in one single online place, and is supported by unrivalled personal service. Our goal is to make all aspects of portfolio management as easy and efficient as possible for everyone involved, through the features we develop, our integrations with other systems, and the support we provide.

Our purpose: We enable the Miggins family and their adviser to hold their investments on a single platform across wrappers. We provide custody, tax wrapping, trading and reporting.

Our strategy: We make financial planning easier for advisers by delivering great service. Our platform helps advisers grow revenues and reduce risk and cost in their business. We will always have control of our technology, wrappers and service.

Our values: We do the right thing for customers, advisers, staff, shareholders, suppliers and the wider community.

Transact's parent company, IntegraFin Holdings plc, is listed on the London Stock Exchange and is a constituent of the FTSE 250 index. Established in 2000, today we have over £77.2 billion of funds under direction on behalf of over 249,000 investor clients (as at December 2025).

Equal Opportunities

We provide a diverse and inclusive workplace and ensure that all of our staff respect and understand individual differences. We are an equal opportunities employer and positively encourage applications from suitably qualified and eligible candidates regardless of age, disability, gender reassignment, marital or civil partner status, pregnancy or maternity, race, religion or belief, sex or sexual orientation.

Apply Now

Refine Your Search

uk javascript developer jobs in london, eng

IT Integrations Developer

Lead Software Engineer - Frontend Engineering - React Native

Creative Technologist - AI Workflow Developer (6 month FTC)

Web Developer (6m contract)

Shopify Developer

E-commerce UX & UI Lead / Senior WooCommerce Developer

Senior Front End Web Developer

AI and App Development Assistant

Front-End Angular Software Engineer

Java Full Stack Developer | Microservices. Kafka | London

Frontend Engineer - Engine by Starling

Java Full Stack Developer (Camunda) - London, UK

Developer

Software Developer-Backend (SFIA4)

UI Engineer (1 year Fixed Term Contract)

Full Stack Engineer (Python and React)

Java UI Developer

Senior Full Stack Developer

C#, .NET, Azure Developer

Software Engineer

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