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Javascript Jobs in London

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See all the latest contracting opportunities from across London and the rest of the UK

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JavaScript is a key area of focus for PCR Digital. Our mission is to build London’s best talent pool of high quality JavaScript developers and engineers so that we can meet the current demand coming from a broad range of industry sectors and clients.

Along with core JavaScript skills, our clients are looking for experience with a range of JavaScript frameworks and libraries to help them deliver great interactive experiences. The options are extensive but for application frameworks the greatest demand is for Angular.js or Backbone.js and using functional tools like Underscore.js or LoDash. On the server side, Node.js is core with increasing demand for experience with non-relational databases such as MongoDB, Redis or CouchDB.

With the advancement of JavaScript, we recruit for range of job titles from Front End Developers, Front End Engineers, JavaScript Developers and JavaScript Engineers, Client Side Developers, User Interface Developers, Node.js Developers and Full Stack JavaScript Developers. PCR Digital mainly focuses on the London market due to its broad spectrum of technology industries, from broadcast, publishing, ecommerce, digital agencies, gaming and media as well as a number of great Silicon Roundabout start-ups and growing businesses. Rates for JavaScript skills are high at the moment as there is a distinct shortage of supply but average market rates currently are £380-£500 a day for contract roles and a permanent role salary ranges from £48,000 mid-weight to £70,000.

The qualifications for someone working with JavaScript can vary from a graduate with a Computer Science Degree to a Computer Science Masters, to a wide range of experience with programming and no degree whatsoever. More and more companies want to see candidates who are enthusiastic about programming as well technically sound.

Big Data Engineer with AWS and Hadoop

London West/Central London
£500-520pd
First Posted:
26 April 2017

Big Data Engineer with strong AWS and Hadoop experience for a contract role (or Contract to Permanent) in West London. Someone who has complete technical knowledge of all phases of building large-scale data processing systems and applications using AWS Services (such as EMR, Sark, Redshift, Data Pipeline, Lambda,S3 & Kinesis), Hadoop and various Scripting/Programming Languages (Java or Scala or Python . The data engineer would design, develop, automate, maintain and test big data solutions within this well-known Media organization based in West London. This individual would work on implementing complex big data projects with a focus on collecting, parsing, managing, analysing and visualizing large sets of data to turn information into insights using multiple platforms.This role requires an understanding of how algorithms work and experience implementing high-performance algorithms The big data engineer should be passionate about working with cutting edge technologies in solving problems and develop prototypes, proof of concepts for the selected solutions.Required Experience: · 3+ years of hands on experience with AWS services (such as EC2, EMR, RedShift, Data Pipeline, Lambda, S3, Kinesis, CloudFormation etc) · 4+ years of working experience with Hadoop based technologies such as MapReduce, Spark, and NoSQL implementation · 8+ years software industry experience with 6+ years extensive working knowledge in different programming /scripting languages like Scala, Java, Linux, Shell, Perl, Python and/or R. · Experience working with structured, semi-structured and unstructured data sets including social, web logs and real time data feeds· Able to tune Big Data solutions to improve performance and end-user experience · Bachelor's or Master's degree in computer science or software engineering Additional Experience· Spark developer / AWS DevOps Engineer / AWS SysOps administrator certification is a plus · Experience with Scala, Jenkins, GitHub, nodejs and mongo db is a plus · Big Data Developer Certification is a plus · Experience in the media industry is a plus · Must have the legal right to work in the United KingdomKey Responsibilities:· Create, configure, implement, document and automate ingestion, enrichment and analytic pipelines using distributed big data / cloud platform· Identify, evaluate and implement big data tools and frameworks required to provide requested capabilities· Understand the challenges being addressed by an engagement and collaborate with team members to deliver a technical solution that meets the business needs.· Administer and troubleshoot Applications, system and data integration, server performance, and hardware and software releases.Ideally interested in being open to moving into a permanent position in the future.Must be eligable to work in the UK (not Tier 2 Visa)

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Digital Designer (Freelance)

London West/Central London
£150 perday
First Posted:
25 April 2017

Digital Designer (Freelance), London, up to £150 per day, 3 days per week, Rolling contractWe are working with leading media broadcasting company based in west London. They produce and distribute a range of content for their tv channel, which is accessible via cable and satellite worldwide. A role has arisen for a 3 day per week freelance Digital Designer with a minimum 2 years' experience of supporting marketing, product and advertising sales teams by producing promotional materials, online and offline advertising and some limited website/email design.Key Skills Required: * Solid working knowledge of Photoshop and image management technologies * Experience of creating dynamic HTML5, digital ads, eg leaderboards, MPUs * Experience of managing art production and asset tracking * Experience of working with an online content focused site * Experience of leading on design projects and briefs * Ability to manage brand integrity and present to core stakeholders on site developments * Self-starter with attention to detail and genuine enthusiasmThis role demands a good understanding of relevant web technologies including Flash, Illustrator, Photoshop, along with coding technologies including XML and HTML5. This role is a contract role, 3 days per week and is available to start immediately. For further information, please send a copy of your CV via the link on this page.

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C++ Developer With GUI / QT Developer

London All London
450-500pd
First Posted:
29 March 2017

Senior C++ Developers with good GUI and Qt. Experienced C++ software engineer with experience in graphically rich User Interface development is required to work in a long term contract for this large media company based in West London. The roles will be joining the Internet TV team within Technology, who are responsible for technical implementation, delivering robust and creative cutting edge cross platform solutions. The software interfaces /solutions being built are for todays touch screen, graphically rich devices such as Smart TV's, STB, Mobiles and Tablets, and have pixel perfect graphics and motion graphics/ video graphics. The department strives to be seen both internally and externally as a world-class software engineering function, continually delivering high quality creative solutions. Description: As a C++/Qt Developer, you'll be drawing on your know-how to deliver high quality features quickly. You will be encouraged to help solve the problems faced in this domain with the potential of bringing new technologies to the platform. You'll be knowledgeable and passionate about technology, enjoy pairing with other smart people and use agile to ensure your projects succeed. Requirements/ Skills: · Strong current C++ development background, experienced with GUI and either QT (highly beneficial) or other UI frameworks, experienced in developing graphically rich or consumer facing User interfaces · Experience with multiple UI frameworks but QT highly desirable · Must have Experience of developing interfaces, rich media applications for todays touch screen, graphically rich customer facing consumer devices such as Mobiles and Tablets, that have pixel perfect graphics and motion graphics (Graphics stacks and OpenGL would be a bonus) · Able to Work collaboratively alongside large creative UX design teams and help bring their work to life. (experience gained in creative agency environment might be suitable) · Regular use of agile and XP practices such as pairing and TDD are highly beneficial · Knowledge and experience of a wide range of best of breed open source and commercial technologies · Bachelors' degree or equivalent industry experience · Good communication skills - comfortable communicating at all levels · Comfortable working in a Linux environment Key Responsibilities: · Develop excellent quality software using agile techniques such as Test Driven Development and Pair Programming · Take an active role in Story definition, assisting QA's and business stakeholders with Acceptance criteria · Drive best technology and software development practices into the team with passion and enthusiasm · Participate in regular showcases of new work to the product owners and business stakeholders · Strive for continuous improvement within the teamUnable to accept Tier 2 applicants, Work will be based onsite in Osterley west London UK. Must be eligible to work in the EU.

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Automation Tester

London West/Central London
£420 - 460 per day
First Posted:
24 March 2017

What you do?Automation testing with some experience in manual testing.Strong coding and scripting in python.Experience in testing GUI.Key Responsibilities: Championing testing, effective test automation and good testing practices writing and executing effective functional tests, carrying out exploratory testing Automating functional and regression tests using well-structured maintainable code Actively supporting agile development methods and best practices Supporting and actively working towards test driven development and test automation Helping to improve processes and procedures Raising descriptive and useful bug reports Quickly acquiring new testing skills and working with new technologies with little support Working with other testers and teams to ensure the spread of good practices and knowledge Assisting with the setting up and configuration of build and test environmentsRequirements/ Skills: Experience testing rich graphical user interfaces Experience and working knowledge of test automation (coding), using Python essential Plan, execute and maintain automated functional tests Experience of and ability to design and execute effective test cases Good knowledge of automation tools Knowledge of the full software development and testing lifecycle in an Agile environment Experience of hands-on testing in Agile development environments (especially Scrum and XP) and Test Driven Development Proactive, diplomatic and clear communicator Working knowledge of JSON and shell scripting Experience of Exploratory Testing Experience of Continuous Integration using Teamcity, Jenkins or Cruise Control Worked in Pair Programming environments would be a plus Experience of testing on devices would be a plus Squish experience desirable Knowledge of various test design techniques Knowledge of defect and sprint tracking tools Experience of Linux desirable NOTE: Tier 2 visa applications will not be considered for this role.

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React JavaScript Developer

London West/Central London
£450 - 490 per day
First Posted:
23 March 2017

React JavaScript Developer - Central London - Greenfield projectWe are looking for a React JavaScript Developer who has proven experience of working on Greenfield projects to deliver highly performant customer facing apps.You will be working in central London, just off Regent Street, within a highly successful software house who provide a range of guest facing applications to a global customer base within the hospitality industry. Working for one of their biggest clients and as part of the professional services team, you will build at food and beverage ordering application which will be adding to their range of applications.We need a Front End JavaScript developer, who is available to start work on Monday 3rd April for 3 months. If you are available or coming free and have the relevant React experience, please apply asap with your most up to date CV and we'll be in touch.

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Accessibility SME / Engineer

England All Locations
£350-£400 per day depending on skill and experience
First Posted:
23 March 2017

Accessibility Engineer / Consultant - Contract - West LondonLong term rolling contractWe are looking for an Accessibility Engineer / Consultant to work for a global e-commerce company at their UK Headquarters, based near Uxbridge.The role will sit within a team of consultants and engineers, who work throughout the business from the inception of web projects through to deployment, advising on accessibility, setting standards and helping to put processes in place to ensure that the web development teams deliver world class, fully accessible sites.Projects will vary depending upon the needs of the team you are working with and for this reason we look for a hybrid skill set so that you can work on technical elements of the role and be equally comfortable providing consultancy on accessibility matters.So, ideally we are looking for: * Strong knowledge and experience of accessibility and web standards, WCAG, ARIA as well as carrying out accessibility audits * Experience using a range of assistive technology tools such as JAWS, NVDA and VoiceOver * Proven front end development skills - HTML, CSS and JavaScript * Good communication skills with the ability to build relationships and work across a range of teams within a global businessIf you feel your skills and experience would be a good match for this role then please send a copy of you most recent CV and I'll be in touch with you to discuss further.

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iOS SME

London West/Central London
£500 - 540 per day
First Posted:
13 March 2017

iOS / macOS Accessibility Consultant / Subject Matter ExpertWe are looking for an iOS/macOS Accessibility Subject Matter Expert to work for a global e-commerce company at their UK headquarters, based near Uxbridge. As well as being well versed in application development environments (such as Cocoa and Cocoa Touch) you will also be an expert in accessibility.The role will involve working closely with many teams simultaneously, and ensuring the best output from each team.Key skills and experience required:* Excellent programmer with experience in Swift and / or Objective-C* Excellent knowledge of UIKit and AppKit* Understanding of accessibility APIs such as UIAccessibilityPostNotification* Understanding of how people with disabilities use iOS and / or macOS* First-hand experience in testing with assistive technologies, e.g. VoiceOver, Switch Control* Familiarity with accessibility features on mobile devices* Familiarity with project management methodologies such as Waterfall and Agile* Past engineering experience This role will be working within the Accessibility and SEO Centre of Excellence, a group created with the purpose of promoting and supporting accessibility across the business and offering consultancy services to project teams.Your role will be varied from auditing existing solutions, working with teams throughout the entire life cycle of a project on new features and solutions, liaising and co-ordinating with various functions and representing the team positively and effectively at all times. You will be a pragmatic and charismatic individual, able to push for the best results whilst also maintaining excellent relationships with all those you work with.The successful candidate will be a fast learner, capable of adapting and adhering to internal guidelines and processes, and working to tight deadlines with teams spread around the globe. Previous industry experience with an emphasis on accessibility is essential.If you feel this contract would be relevant to your skills and experience, please apply now with your latest CV and we'll be in touch to discuss the role and the company in more detail.

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Senior JavaScript Developer

London West/Central London
£370-410 per day
First Posted:
24 February 2017

We are looking for a strong Front end developer with experience in JavaScript, Angular, Node, CoffeeScript, Less, Responsive Web Design (RWD) and Agile primarily.A VC backed progressively disruptive Start-Up are looking to take on an extremely strong Front End enthusiast, a developer who lives and breathes all things UI, with clear evidence of previous work examples with quality releases. The perfect candidate will have had a directed career path through different JavaScript Frameworks and is most comfortable working with Angular JS and puts best practices into use for this content engagement App.The team has already released a Beta version of their application and believe that now they have the momentum of the market to truly take their product to every desktop and mobile user. They have been highly commended in all forms of media and really do wish to grow within that space with the addition of a Front End developer who would be at first in a stand-alone role, but would then have a team built around them.Skills Needed Can Do / Will Do Attitude Expert on Front-End Development JavaScript + AngularJS 1.x JavaScript / CoffeeScript / Less HTML5 and CSS3 AJAX Responsive webdesign (RWD) Mobile-first Design for Multiscreen (Desktop, Tablet, Mobile) Transitions/Animations (You know how to make a WebApp jump off the page) Object oriented JS Experience with RESTful web services (API, JSON) TDD/BDD - Jasmine, Karma, Protractor Tools e.g. SSH, GIT, SublimeNice to have: AngularJS 2.0 NodeJS SAAS MVC/Flux CircleCI Analytics Development ES6 Google Analytics/Intercom JIRAQualifications A strong desire to learn, innovate and build awesome things A creative drive and end-user perspective as well as technical knowledge A pragmatic approach to development work The ability to produce documented code The ability to learn quickly and work autonomously A keen interest in the ever-changing technology sector Fluent in English Agile/Kanban Understanding

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Front End JavaScript Developer

London All London
£375-£400
First Posted:
14 September 2016

"Mid-Level Angularians" - Front End JavaScript Developer3 month contract - Central London - £375 - £400 per dayWe are looking for a JavaScript front end developer to join a development team- made up of front end and full stack .net developers - to help on a number of key project that will enable the team to get on track as they work towards overhauling their platform and products.You will be joining a company that provides guest facing technology to over 4,000 hotels globally and you will be working on a number of web apps that will be used in over half of the locations.The right person for this role will have: * A good track record of building user interfaces * HTML/HTML5 * CSS/CSS3 * JavaScript (including Angular.JS as your preferred framework - as we need someone who can deliver web pages from scratch and who is confident of their skills in this area) * TDD If you are free now and looking for your next project and feel that you are someone who is able to hit ground running in a fast paced environment, then please apply NOW.

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Tim has always been a true professional offering a personal service to both clients and contractors. He is passionate about helping people develop their careers through his keen understanding of broadcast technology.
I recommend Tim highly as an excellent one-stop shop for anyone working in the broadcast engineering business.

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