Top 100 Google App Engine (GAE) Developers in the United Kingdom

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Top 100 Google App Engine (GAE) Developers in the United Kingdom

December 2023

Looking for a top Google App Engine web app developer in the United Kingdom?

Google App Engine is best for scaling web apps. For example, if you launch an app and 100 people use it the first day but 1000 use it the second day, Google App Engine automatically allocates resources to meet this demand. 

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List of the Best United Kingdom Google App Engine Web App Developers

  • 1
    • $25,000+
    • 50 - 249 employees
    • Croydon, United Kingdom

    Founded in 2005 and headquartered in Croydon, UK, GoodCore Software specializes in bespoke software development. WIth a team of about 50 employees, the company offers web and mobile app development to startups and established businesses alike. Engagement options include fixed- cost and dedicated development teams.

    Clients

    • Printed Music Licensing
    • Weight Loss Resources
    • GC Business Finance
    • XTracked Deliveries

    Industries

    Notable Project

    GoodCore developed a SaaS application for managing briefing programs and events for Fortune 100 companies. The team coded in React and Laravel for creating a web-based application. The application helped automate and streamline the management of corporate events, briefing programs and meetings.

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  • 2
    • $50,000+
    • 250 - 999 employees
    • London, United Kingdom

    Headquartered in London, Opinov8 Technology Services is a technology solutions company that was founded in 2016. With offices in Ukraine and Spain, the team of 88 works with mid-market and small businesses in the financial services, advertising, marketing, gambling, hospitality, IT, and media industries. Opinov8 specializes in custom software development, enterprise app modernization, big data consulting, and clould consulting for clients.

    Clients

    • Fortune 500 Companies
    • Computer and IT service business. Leading Global Media companies. Global Logistics Technology business
    • Leading European Fintech Platform businesses. Global Tire Manufacturers. Leading European Car Manufacturer.  Top 100 Swiss Healthtech Startup. Many more

    Industries

    Notable Project

    A gambling company hired Opinov8 Technology Services for app development, a website refresh, and resources for their gaming system. Key technologies include React and .NET.

    “If you use them as a development resource, you’ll get tremendous value from them.”

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  • 3
    • Scheduling

      5.0
    • Quality

      5.0
    • Cost

      4.9
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $10,000+
    • 10 - 49 employees
    • London, United Kingdom

    Core Blue Ltd is a software engineering company based in London with an office in Plymouth, U.K. The company, founded in 2015, has a team of less than ten that provides custom software development, mobile app development, web development, and IoT development services to various companies.

    Clients

    • Bank of Kigali
    • Kuoni
    • PayPoint
    • SAP

    Industries

    Notable Project

    CoreBlue supported the development of a volunteering software marketplace for a digital products and services company. They provided a roadmap, created design prototypes in Figma, and built portals in React.

    "They took the time to understand the long-term plan for this platform."

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  • 4
    • Scheduling

      4.6
    • Quality

      4.8
    • Cost

      4.8
    • NPS

      4.9
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    • $100,000+
    • 50 - 249 employees
    • Salford, United Kingdom

    Digiryte is a web and mobile app development company based in Manchester, United Kingdom with another UK office in Preston. Since 2015, their team of 28 has been specializing in mobile app development, custom software development, and web development for midmarket clients. 

    Clients

    • NHS
    • Channel 4
    • Close Brothers
    • Hinch Property Management

    Industries

    Notable Project

    Picking up from a previous vendor, Digiryte developed a mobile app for an app development company. They're responsible for the app's maintenance and operational support.

    “Digiryte is always forthcoming with the best way to do things.”

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  • 5
    • Scheduling

      4.8
    • Quality

      4.9
    • Cost

      4.7
    • NPS

      4.9
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    • $25,000+
    • 50 - 249 employees
    • London, United Kingdom

    Synetec is a software development consultancy headquartered in London. They were established in 2009, and have 26 employees. Synetec's range of services includes cloud, CRM, and business intelligence consulting, software integration, web development, custom software development, and more.

    Clients

    • Argentex
    • Genesis
    • Jabre Capital Partners
    • Zebedee Capital Partners LLP

    Industries

    Notable Project

    Synetec developed a bespoke CRM system for a cybersecurity company. The team led a discovery phase, then built the system, including customer management and marketing automation features and an accounts API.

    "Synetec spent a lot of time understanding our business."

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  • 6
    • Scheduling

      4.8
    • Quality

      4.9
    • Cost

      4.6
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $50,000+
    • 50 - 249 employees
    • Belfast, United Kingdom

    Instil Software is a software engineering firm based in Belfast, Northern Ireland. Founded in 2005, Instil has about 30 employees that work across a variety of industries. They offer custom software development, mobile app development, cloud consulting and software integration, IoT, and web development.

    Industries

    Notable Project

    Instil Software wrote an observability software's code that integrated with an existing Java environment. They’ve since expanded their role to include Java development.

    "Great engineers are hard to find and the two we had working with us were clearly top-notch."

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  • 7
    • Scheduling

      4.5
    • Quality

      4.7
    • Cost

      4.7
    • NPS

      4.8
    Read Full Reviews on Clutch Visit Site
    • $25,000+
    • 50 - 249 employees
    • London, United Kingdom

    Located in Ahmedabad, India with additional offices in the US and UK, Innovify has been delivering high quality solutions since 2011. Although the team of nearly 130 specializes in mobile app development, they also engage in growth hacking, consulting, and UX design.

    Clients

    • ARM INC
    • Vonage
    • British Council
    • BBC

    Industries

    Notable Project

    Innovify was hired by a software development company for app and website development services. The team ensured that both the app and website were seamlessly integrated across different platforms.

    "Their technical expertise and ability to understand our goal were outstanding."

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  • 8
    • Scheduling

      4.9
    • Quality

      5.0
    • Cost

      5.0
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $10,000+
    • 10 - 49 employees
    • London, United Kingdom

    Old.St Labs is a software development business based in London. The business, founded in 2020, has a team of more than ten that provides custom software development, mobile app development, UX/UI design, web design & development, and AI services. Old.St Labs serves small and mid-market companies in the advertising & marketing, education, financial services, health care & medical, and legal industries.

    Clients

    • Kopona
    • Brain.Health
    • CityMunch
    • Altus Investment Management Ltd

    Industries

    Notable Project

    Old.St Labs optimized the desktop booking tool of a transportation solutions company to make it mobile-responsive. Their work included revamping the customer journey from scratch and integrating several APIs.

    "The team planned the project thoroughly."

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  • 9
    • $25,000+
    • 2 - 9 employees
    • London, United Kingdom

    This is Undefined, a branding firm, is located in London, United Kingdom. The small company was founded in 2018. Their team offers branding, digital strategy, ux/ui design, mobile app development, and more.

    Industries

    Notable Project

    A financial services company hired This is Undefined to develop an MVP and provide resources for the improvement of a mobile app. 

    "This is Undefined delivered on time and was a joy to work with through all the typical startup iterations."

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  • 10
    • Scheduling

      4.6
    • Quality

      4.6
    • Cost

      4.4
    • NPS

      4.8
    Read Full Reviews on Clutch Visit Site
    • $25,000+
    • 10 - 49 employees
    • London, United Kingdom

    Bit Zesty is a custom software development firm. They provide custom software development, ux/ui design, web development, application management & support, and more and were launched in 2009. Their small team is London, United Kingdom-based.

    Clients

    • Oxford Medical Simulation
    • Trussell Trust (UK Foodbanks)
    • Queen's Awards for Enterprise
    • HMRC

    Industries

    Notable Project

    Bit Zesty is developing a healthcare recruitment agency’s software solution. They’ve conducted discovery sessions before building the tool using Ruby on Rails. They’re currently maintaining the app.

    "They understand the pulse of the customer and do not hesitate to make recommendations."

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  • 11
    • $50,000+
    • 10 - 49 employees
    • London, United Kingdom

    Steadfast Collective is a custom software development company established in 2014. The small team focuses on custom software development, web development, and e-commerce development. The agency is located in London, United Kingdom.

    Clients

    • National Caravan Council
    • Suffolk Libraries
    • Elemis
    • Love it Stitch It

    Industries

    Notable Project

    Steadfast Collective designed and developed a website for a theatrical design company. They collaborated with internal brand designers and provided insights on social media advertising and online marketing.

    "They listened to us throughout the entire project."

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  • 12
    • Scheduling

      4.8
    • Quality

      5.0
    • Cost

      4.8
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $10,000+
    • 10 - 49 employees
    • London, United Kingdom

    Hiyield is a small website development firm located in St. Austell, United Kingdom. Launched in 2018, the team focuses on web development, custom software development, ux/ui design, application management & support, and more.

    Industries

    Notable Project

    Hiyield developed a digital built asset consultancy's website to help them increase their brand awareness and stand out. This involved outlining deliverables, creating mock-ups, and developing wireframes.

    "The whole interaction with them was a pleasurable experience"

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  • 13
    • $100,000+
    • 10 - 49 employees
    • Sarratt, United Kingdom

    Clock Limited is a digital design and build company. Founded in 1997, the company is headquartered in Kings Langley, United Kingdom. They have a team of around 35 employees who focus on custom software, web, and mobile app development.

    Clients

    • International Tennis Federation
    • Leicester Tigers
    • Northampton Saints
    • Wall Street Journal

    Industries

    Notable Project

    Clock Limited designed and developed a website and mobile app for a subscription service company. The goal was to increase membership engagement and growth.

    "The process was incredibly smooth. The entire team was very prepared at all times."

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  • 14
    • Scheduling

      4.8
    • Quality

      4.9
    • Cost

      4.8
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $5,000+
    • 2 - 9 employees
    • Edinburgh, United Kingdom

    Launched in 2017, Lumi is a small user experience company. Their services include ux/ui design, web design, branding, and product design. The firm is located in Edinburgh, United Kingdom.

    Clients

    • Anthemis
    • Atlassian
    • Trello
    • RoboKiller

    Industries

    Notable Project

    Lumi Design provided UI/UX design for a SaaS platform. They designed customer flow, wrote content, reorganized the interface, and documented low-fidelity wireframes.

    "They were focused on identifying our true pain points and delivering targeted solutions that make an impact."

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  • 15
    • $25,000+
    • 10 - 49 employees
    • York, United Kingdom

    Thumbmunkeys Ltd is a mobile app development company based in York, United Kingdom. This company was founded in 2012 and has 25+ employees. Thumbmunkeys Ltd is responsible for mobile app development, web development, and wearable app development.

    Clients

    • Capita
    • Transport for London
    • Stansted Express
    • SAP

    Industries

    Notable Project

    Thumbmunkeys Ltd has developed a native Android and iOS application for a Web3 analytics company. Thumbmunkeys Ltd adapted the client’s web application and provided feedback about its coding and architecture.

    “Thumbmunkeys Ltd has done a great job adapting to our existing product.”

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  • 16
    • $10,000+
    • 2 - 9 employees
    • London, United Kingdom

    Sprint Innovations is a development agency based in London with fewer than 10 employees. Founded in 2014, they offer custom software, web, and mobile app development solutions for clients that work in the fields of business services, financial services, and real estate.

    Clients

    • Virgin Trains
    • Heron Financial
    • Eurocom CI
    • The Depositary

    Industries

    Notable Project

    Looking to create a custom business management operations software, a real estate investment firm hired Sprint Innovations. The team used Angular, Java, and more technologies to design and develop the solution.

    "Unlike other companies I’ve experienced, they actually care about helping the customer achieve their goals."

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  • 17
    • Scheduling

      5.0
    • Quality

      5.0
    • Cost

      4.9
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $10,000+
    • 10 - 49 employees
    • London, United Kingdom

    Limeup is a Product Design Studio headquartered in London, United Kingdom. It was founded in 2019 and has since grown to over 20 employees and helped over 50 companies create stellar designs for their products. They primarily serve clients from Fintech and Gambling industries.

    Clients

    • Connect44
    • Nexte
    • Pokerhouse
    • Koto English

    Industries

    Notable Project

    Limeup provided UX design services for a financial services company. They performed UX research and eventually utilized mockups to create an application's interface.

    "Their approach was methodical and consecutive."

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  • 18
    • $10,000+
    • 10 - 49 employees
    • Watford, United Kingdom

    AppDrawn is a software solutions company founded in 1999. Their headquarters are in London and they have a second office in Barcelona. Across these 2 locations, they have a team of a dozen staff that do custom software development, web development, and mobile app development for small and medium-size businesses.

    Clients

    • Aspire Customer Communication Services
    • Imagine Property Group
    • Renteq Highways
    • HSM

    Industries

    Notable Project

    Appdrawn Software Development helped an education company develop an English language testing platform, along with blended versions of the client's product. The goal was to ensure robustness and scalability.

    "They worked collaboratively with project managers within the company to provide a clear plan at all stages."

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  • 19
    • Scheduling

      4.9
    • Quality

      4.9
    • Cost

      4.8
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $50,000+
    • 50 - 249 employees
    • London, United Kingdom

    Mad Devs is a digital development company based in Cambridge, England, and founded in 2016. Their team of 35 employees specializes in custom software development, web development, and cloud consulting. They mainly work with small businesses and midmarket clients in the consumer products, education, and business services industries.

    Clients

    • Clutch
    • Internews
    • Veeqo
    • Roci.fi

    Industries

    Notable Project

    A decentralized credit economy company hired Mad Devs to support the enhancement of their software. They conducted integration tests, fixed bugs, implemented CI elements, and performed various tech tasks.

    "One impressive thing I would like to point out was their gentle approach to the changes they brought to our team."

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  • 20
    • Scheduling

      4.9
    • Quality

      5.0
    • Cost

      4.9
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $10,000+
    • 10 - 49 employees
    • London, United Kingdom

    Appstronauts is a mobile app development company that was founded in 2015. They are headquartered in Warsaw, Poland with another location in Manchester, U.K. The company is made up of 11 employees and specializes in mobile app development, custom software development, and IT strategy consulting. Their client focus is small businesses, primarily in the business services, consumer products, and education industries.

    Clients

    • Solutions30
    • OTIS
    • Decathlon
    • Agora

    Industries

    Notable Project

    Appstronauts augments a multinational oil and gas firm's team for web and mobile app development projects. Before joining, the six developers have gone through an HR interview and tech-check with the client.

    "We are impressed by their approach, professionalism, confidence, and agility."

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  • 21
    • $1,000+
    • 10 - 49 employees
    • London, United Kingdom

    Takeaway Reality is an AR/VR development company headquartered in London, United Kingdom. The small firm was established in 2020. Their team offers AR/VR development, marketing strategy, mobile & app marketing, and business consulting.

    Clients

    • Microsoft
    • Ford

    Industries

    Notable Project

    Takeaway Reality developed a web-based AR app for a university professor. This app helps students understand the physics behind a flywheel governor and its dynamics in a steam engine.

    “I valued the fact that I interacted with the owner a lot. He was very invested in ensuring that the project succeeded.”

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  • 22
    • Scheduling

      4.5
    • Quality

      4.9
    • Cost

      4.3
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $25,000+
    • 50 - 249 employees
    • Cardiff, United Kingdom

    Box UK is an enterprise software development company based in Cardiff, UK, with an office in London. The company, founded in 1998, has more than 50 employees who provide, among others, custom software development, web development, and enterprise app modernization services to various businesses. 

    Clients

    • OKdo.com
    • Investec Asset Management
    • ateb
    • Welsh Government

    Industries

    Notable Project

    Box UK developed two websites for an electronic and industrial components distributor. The websites would serve as the core ordering platform for the company's markets in Indonesia and Vietnam.

    "Box UK navigated the extremely complex internal environment and was able to get the project fully implemented quickly."

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  • 23
    • Scheduling

      4.4
    • Quality

      4.8
    • Cost

      4.5
    • NPS

      4.7
    Read Full Reviews on Clutch Visit Site
    • $10,000+
    • 10 - 49 employees
    • Coventry , United Kingdom

    Imobisoft is a full-service mobile app & software development company based in Coventry, U.K., with an office in London. The company, founded in 2007, has a team of more than ten that provides custom software development, digital strategy, IoT development, web development, BI & big data consulting & SI, and SEO services. Imobisoft serves midmarket and other-sized companies in the medical, manufacturing, utilities, energy & natural resources, financial services, ane e-commerce industries. 

    Clients

    • NHS (Multiple divisions)
    • BSkyB
    • E-Energy
    • Northern Gas Networks

    Industries

    Notable Project

    An energy supplier hired Imobisoft to provide web and app development. Their efforts also include UI/UX design for a platform that allows salespeople to streamline their processes.

    "Imobisoft developed a web and mobile app using .NET  technologies. The application allows us to bring on thousands of new customers . Without the software they created for us, we wouldn’t be generating sales. We're very satisfied with the design and the application, and it couldn’t be better".

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  • 24
    • $10,000+
    • 2 - 9 employees
    • London, United Kingdom

    Founded in 2017, Lambert Labs is a software development agency that specializes in Python. Their team of fewer than 10 employees is based in London. They also provide web development services and application testing. 

    Clients

    • Accenture
    • Aerial Empire
    • Bongo's Bingo
    • Boost

    Industries

    Notable Project

    Lambert Labs has been hired by a cross-cultural consultancy to build a custom project management system. They have also resolved issues that were not addressed by the previous developers of a legacy software.

    "They are easy communicators and professionals."

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  • 25
    • Scheduling

      5.0
    • Quality

      4.9
    • Cost

      4.9
    • NPS

      4.9
    Read Full Reviews on Clutch Visit Site
    • $50,000+
    • 10 - 49 employees
    • Sheffield, United Kingdom

    The Curve, a software development firm, is in Sheffield, United Kingdom. They specialize in custom software development, web development, and mobile app development and were founded in 2019.

    Industries

    Notable Project

    To supplement the loss of their previous development support team, The Curve was brought in to continue providing maintenance and development services for a motivational fitness platform.

    "It's evident they care about our situation and support our product vision."

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  • 26
    • Scheduling

      4.9
    • Quality

      5.0
    • Cost

      4.9
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $50,000+
    • 50 - 249 employees
    • Leeds, United Kingdom

    Audacia is a bespoke software development firm headquartered in Leeds, UK. Founded in 2007, and have about 30 employees, most of their clients are large-scale enterprises in the European market. They provide custom software development, web development, mobile apps, software integration, and staff augmentation.

    Clients

    • O2
    • Story Homes
    • AESSEAL
    • ADM Agriculture

    Industries

    Notable Project

    Audacia developed an online platform for a mortgage lender. The platform automated the client's end-to-end processes; it automated loan repayment calculations and eliminated manual-based processes.

    "Communication was very good and consistent throughout the project, benefiting from tight feedback loops."

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  • 27
    • Scheduling

      4.6
    • Quality

      4.6
    • Cost

      4.6
    • NPS

      4.5
    Read Full Reviews on Clutch Visit Site
    • $10,000+
    • 10 - 49 employees
    • Whiteley, United Kingdom

    Chimpare is a small application development firm. In Whiteley, United Kingdom; New York, New York and Markham, Canada, the firm was launched in 2012. Their services include mobile app development, web development, e-commerce development, ux/ui design, and more.

    Industries

    Notable Project

    Chimpare works with an IT services and consulting company to develop and scale up the client's products and automation solutions. Goals include achieving operational efficiency and streamlined workflows.

    "The consulting services offered insightful information that helped us make decisions."

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  • 28
    • Scheduling

      4.5
    • Quality

      4.7
    • Cost

      4.0
    • NPS

      4.9
    Read Full Reviews on Clutch Visit Site
    • $5,000+
    • 10 - 49 employees
    • Bristol, United Kingdom

    Deazy is a small application development company. The Cardiff, United Kingdom-based agency was founded in 2016. Their services include mobile app development, custom software development, web development, ux/ui design, and more.

    Clients

    • RAC
    • Curve
    • Influencer
    • Popeyes

    Industries

    Notable Project

    Deazy provides custom software development support for a news agency. They were responsible for maintaining and supporting the development of the client's entire tech stack.

    "I was happy with their service across the board."

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  • 29
    • Scheduling

      4.9
    • Quality

      4.9
    • Cost

      4.5
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $25,000+
    • 50 - 249 employees
    • London, United Kingdom

    Applifting is a software studio based in Prague. Since 2014, their team of 70+ has been specializing in custom software development, digital strategy, and UX/UI design. 

    Clients

    • Adidas
    • Škoda Auto
    • Erste Group
    • GoodData

    Industries

    Notable Project

    Applifting built a data processing system for a molecular diagnostics company. They connected it with patient data registration, laboratory workflow processing, reporting, submission, and distribution.

    "Their dedication to the project's success and adaptability to ever-changing specs were impressive."

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  • 30
    • $50,000+
    • 10 - 49 employees
    • Leamington Spa, United Kingdom

    Black Pepper Software Ltd is a software development firm based in Leamington Spa, United Kingdom with a team of 40 experts. Founded in 1999, they have provided custom software development, IT strategy consulting, and UX/UI design solutions for small firms, midmarket businesses, and large companies. They have experience working in multiple industries, including consumer products & services, financial services, and non-profit.

    Clients

    • Jaguar Land Rover
    • EDF Energy
    • Engie
    • Specsavers

    Industries

    Notable Project

    Black Pepper Software Ltd. developed a SQL database and a web-based frontend for an internal software. The system is used to manage the investment research process and present financial models. 

    “They're very solutions-oriented and able to see our perspective.”

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