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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.

Java Engineer

London West/Central London
£510 - £535 per day.
First Posted:
24 June 2017

We are looking for skilled Java Developers with experience using Mongo, TDD, ideally Groovy, Solr and pair programming for a 3 month contract with a featured client in West London using pure agile, best practice & clean code methods. Your key responsibilities:As a member of the software engineering team, you will… * Be seen as an active mentor within the team that can offer advice and guidance around design, architectural decisions and code quality * 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 team and the department Your skills: * Experienced ability in Java (Groovy/Grails experience also highly desirable) * Have experience and ability with NoSQL Databases, ESB's, Message Brokers, Document Stores and Data Structure Servers * Experience in SOLR is also desirable * Have experience in automated continuous delivery and deployment, and automated testing * Have knowledge and experience of a wide range of best of breed open source and commercial technologies * Be experience of software development for resilient, high capacity, high traffic, high availability web-based services/systems, including configurable Micro-services * Have an understanding of how the web works including familiarity with web security and attack countermeasures * Have a good understanding of software performance tuning, security, scaling and resilience. * Have delivery experience within an agile project specific experience in TDD, Pair Programming * Have a track record of getting the job done to a high standard * Be able to demonstrate an enthusiasm and aptitude for helping others learn new skills and practices

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Senior Android OS Developer with C++

London West/Central London
£450-500pd
First Posted:
24 June 2017

Senior Android OS Developer with C++ required for The NOW TV Device/Client teams who build a number of applications for customers to enjoy. This new project offers a chance to build something from scratch while having the support of the existing Agile NOW TV teams.Required Skills & Experience: Android OS experience is essential (Android TV or AOSP) with a strong preference for Android TV, including bootloader, kernel, drivers and filesystems * C++ Developer skills * Strong appreciation of multi-threading OS * Knowledge of Bluetooth and Wifi protocols * Comfortable with version control systems (Git). * Experience with continuous integration. * Agile experience (TDD, BDD, Pair Programming) Desired Skills: * Experience with Android user-space applications * Working in a continuous deployment environment.As part of the NOW TV you will: * Develop high quality, testable and performant software. * Champion Agile practices such as Pair Programming, TDD, Continuous Integration and Continuous Delivery. * Work within a self-organising and cross functional Agile team. * Help to ensure user stories are developed in vertical functional slices so that each User Story could be shipped individually. * Contribute to user stories, using TDD and BDD approaches to ensure that quality is baked into the implementation. * Strive for continuous improvement within the team. * Take a pro­active role seeing user stories from development through to production. * Work as part of the team to support and maintain the live applications. * Enjoy the extensive benefits of working for a large yet dynamic organisation.

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Cognos Developer

London West/Central London
£475 per day
First Posted:
24 June 2017

Cognos Developer, London, 3-6 months, £425-£475 per day** Role to start by mid July**We are working with a media, software and entertainments company based in central London. They urgently require an experienced Cognos Developer to work within the business, covering the following key areas:* Maintain current Reporting Infrastructure (Cognos BI) * Troubleshoot report/model/data issues. * Participate in discussions regarding development on Cognos BI and being responsible for formulating the best approach to deliver a solution. * Build documentation sets where appropriate. * Maintain current system integration points of IBM Cognos BI (IBM TM1, Line-of-Business systems) * Ability to interact with Finance users directly as a Cognos expert. * Act as first line of support (UK business hours) for current reporting solution.You will need to have atleast 10 years expereince working as Cognos Developer in similar contract roles. Finance industry expereince would be beneficial, although is not essential. The role is to start by mid July, so please only consider applying if you can meet this time scale. For further details please send a copy of your CV via the link on this page.

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Senior User Researcher

London West/Central London
£370-410 per day
First Posted:
14 June 2017

Looking for an experienced User Research professional for a 3 month contract in Central London.The successful candidate will collaborate with the teams and gather insights to help improve the quality and consumer relevance of our award winning titles.Role & Responsibilities - Work closely with the development teams to create an overall research plan, recommending the most effective times and methods to test to meet the needs of their game - Organise and moderate usability tests - Analyse results and report findings - Act as an ambassador, evangelizing user testing internally and externally - Assist the user testing team in improving our processes and methods - Mentor more junior members of staffExperience & Knowledge - Ideally, you will have a MA/MSc in HCI, Interaction Design or a related discipline such as Cognitive Psychology. - This opportunity would suit someone with a passionate interest in in playing video games, and 3+ years of commercial Usability or UX testing experience, including creating study designs, moderating sessions, writing reports and presenting findings to a multi-disciplinary audience. - Experience managing clients/accounts either internally, or with external client organisations - Experience of game testing is a definite advantageEssential Skill Set The successful candidate must demonstrate: - Strong verbal and written communication skills; presenting information concisely and effectively to people at all levels of the organization. - Strong negotiation and influencing skills and be able to work well with cross-functional teams - e.g. game designers, producers, engineers and artists - Strong organisation skills with the ability to prioritise tasks effectively in a fast-paced environment. - An excellent attention to detail and a strong commitment to quality, both in terms of their own work & in improving product quality through usability testing. - A commitment to reliability, with a clear understanding & communication of the limitations of the research results - A good grounding in HCI and usability methods and excellent analytical ability; able to identify the key problems which need to be addressed. - Ability to be open-minded and forward thinking and actively maintain an interest in the field; keeping up-to-date with developing tools, techniques and gaming testing methodologies. - An understanding of the game development process & the role & limitations of usability testing at each development stage

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JavaScript Developer

London West/Central London
£450 - 490 per day
First Posted:
13 June 2017

As part of the team you will: * Develop high quality, testable and performant software. * Champion Agile practices such as Pair Programming, TDD, Continuous Integration and Continuous Delivery. * Work within a self-organising and cross functional Agile team. * Help to ensure user stories are developed in vertical functional slices so that each User Story could be shipped individually. * Contribute to user stories, using TDD and BDD approaches to ensure that quality is baked into the implementation. * Strive for continuous improvement within the team. * Take a pro¬active role seeing user stories from development through to production. * Work as part of the team to support and maintain the live applications. * Enjoy the extensive benefits of working for a large yet dynamic organisation.Required Skills & Experience: * React (doesn't have to be commercial but must have some experience with it / Flux architecture would be ideal). * HTML5/CSS3. * Extensive experience with TDD and JavaScript frameworks. * Vast experience developing with JavaScript. * Comfortable coding custom JavaScript solutions. * Comfortable with version control systems (GIT). * Adept at building and maintaining cross browser/device compatible sites. * Experience of software development for high quality, high capacity, high traffic, high availability customer facing websites. * Working with RESTful web services. * Experience with continuous integration. * Knowledge of how to measure page performance and apply optimisation techniques.Desired Skills: * Experience with single page application frameworks, e.g. AngularJS. * Working in a continuous deployment environment. * Experience with Node.js. * Usage of multi variant testing. * ES6 development experience.The right candidate will exhibit the following behaviours: * Someone that demonstrates active and conscious awareness of their environment, sensing and anticipating situations. * Asks the right questions at the right time. * An open and honest communicator. * Someone that is comfortable with change, able to fail fast, learn quickly, be open and able to adapt to new challenges or technologies. * Consistent attention to detail. * Innovative and a source for ideas. * A positive attitude and up for a challenge. * Customer focused.

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JavaScript Developer

London West/Central London
£550 - 570 per day
First Posted:
13 June 2017

As part of the team you would: * Contribute and develop high quality software * Work with a self-organising and cross functional agile team using techniques such as Test Driven Development (TDD) and Pair Programming * Influence the technical direction of the team from a design and technology stack point of view * Champion and coach peers in software development best practices and best of breed technology * Take an active role in user story definition, assisting QAs and business stakeholders with acceptance criteria * Participate in regular showcases of new work to the our product owners and other business stakeholders * Take a pro-active role with production issues and release management * Strive for continuous improvement within the team * Enjoy the extensive benefits of working for a large yet dynamic organisationSkills and Experience: We think it is essential that you have knowledge and experience of as many of the following items as possible: * Knowledge and experience of a wide range of open source and commercial technologies o One of the following JavaScript frameworks (AngularJS, Ember.js, React, Node.js)o Use of functional languages with examples/linkso HTML 5o CSS 3o SASS and/or LESS* Experience of software development for high quality, high capacity, high traffic, high availability websites/systems o Test Driven Development (TDD) o Object Orientated Programming (OOP/OOD) o RESTful web services (JSON / XML) o Web application architectures and designs o JavaScript Design Patterns and code modularisation * Experience within agile frameworks and practices o Scrum, Kanban or Scrum-ban o User stories o Continuous Integration / Delivery o Paired Programming* Experience with Application Lifecycle Management Tools o Jira and Confluence (or similar) o Jenkins (or similar) o SVN and Git (or similar)Bonus Points Skills and Experience: * Responsive design * Knowledge of Behaviour Driven Development (BDD) * Knowledge and Experience of Cucumber or similar (ATDD) * Experience with large content/video management systems * Experience of web based video technologies (VOD/Linear Streaming) * Bachelors' degree or equivalent industry experience

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Accessibility SME / Engineer

London West/Central London
£350-400 per day
First Posted:
2 June 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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React JavaScript Developer

London West/Central London
£500 - 525 per day
First Posted:
2 June 2017

One of the largest telecommunications client in West London are on the look out for a strong Front End JavaScript developer for a 6 month contract with a least a years' worth of experience of React and experience with Angular is greatly beneficial.As a project team we strive to work by the best agile practises, we are passionate about collaboration and delivering value to the customer. As a member of the team you will inspire the team to keep quality, performance and customer experience at the forefront of everything that we do.Your responsibilities as a Software Developer will include:- Developing high quality, testable and performant software using agile practices such as pair programming and TDD- Contributing to the technical direction of the team- Driving best technology and software development practices into the team with passion and enthusiasm- Passionate about their work and committed to helping the team improve- Striving for continuous improvement within the team Required Skills & Experience- Expertise with HTML5/CSS3- Expertise with TDD and BDD and JavaScript frameworks such as Jasmine- Expertise with AngularJS (or similar)- Proficient coding custom JavaScript solutions- Comfortable with version control systems (Specifically but not limited to GIT)- Strong problem solving and analytical skills- Exposure to or appreciation of agile development practices- Comfortable working in a fast-paced, dynamic environment- Bachelors' degree or equivalent industry experienceDesired Skills Sought:- Working knowledge of at least one server side MVC framework- Continuous Integration- Node.js

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C++ Developer With GUI / QT Developer

London All London
450-500pd
First Posted:
18 May 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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MS ETL BI Developer SSIS & SSAS

London West/Central London
450-500pd
First Posted:
2 May 2017

Contract role for a Microsoft ETL BI Developer with solid SSIS & SSAS experience for a major media company based in West London. We require a highly experienced MS SQL Server SSIS/SSAS, ETL Developer. The purpose of the role will be to help extend an existing decision platform by adding new complex data sources and unstructured data feeds using SSIS ETL and then developing new business logic cubes using SSAS and writing MDX calculations. This is an interesting project which will help the business reporting, compare and understand the cause and effect of different business actions, consumer behaviour etc providing insight and help shape the international business decisions and help monetise customer journeys across multiple product areas.You will be working closely with other business stakeholders, users and colleagues within the department. Strong clear communication skills will be essential. Key Skills: -5 + years current experience as a MS BI Developer / SQL Server ETL Developer with extensive SSIS ETL and SSAS -High level MS SQL Server development skills including writing MDX calculations for SSAS Cubes -Experience with large complex data sources of different types and flexible enough to work with unstructured data such as website and social media data help transform this for insight -Large company/enterprise level background with experience of large complex international data (not purely focused on financial but also user insights etc) -Experience of Power BI would also be an advantage as this is starting to be used as the main reporting tool -Pragmatic individual, able to work within the existing structure but agile enough to solve issues on the fly -Friendly and positive personality and be able to work well with current team and presentable to the business This role is contract, to start immediately ideally or by beginning of June. Please therefore only consider applying if you meet the above skill requirements and availability. You must be eligible to work in the UK - Tier 2 visa is not accepted.

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Jim Binks

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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