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Custom Software Development, Design & Consulting

Who are THEY?
Since our inception in 2017, we've grown into a remote team of experts, spanning from the UK to Poland. We specialise in delivering tailor-made web and mobile applications, with a keen focus on collaboration and direct client-developer interaction.
Our key strength is a consultancy approach to every client.
We've had the privilege of assisting over 55 businesses - from young startups to well-established companies, helping them navigate the technological landscape and achieve their goals. Our success lies in our ability to match each project's unique requirements with the right expertise

  • Min project size
    $5,000+
  • Hourly rate
    $25 - $49 / hr
  • Employees
    10 - 49
  • Locations
    London, England
  • Year founded
    Founded 2017
  • Languages
  • Timezones

2 Languages that we service

  • English
  • Polish

5 Timezones that we service

GMT
Greenwich Mean Time (GMT)
CET
Central European Time (CET)
UTC
Universal Coordinated Time (UTC)
EET
Eastern European Time (EET)
ART
(Arabic) Egypt Standard Time (ART)

2 Locations

  • London , England
  • Kraków , Poland

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    Pricing Snapshot

    Min. project size $5,000+
    Avg. hourly rate $25 - $49 /hr
    Rating for cost 4.9 /5

    What Clients Have Said

    THEY.dev is noted for providing good value for cost, with pricing fitting various budgets. Clients appreciated timely delivery and responsiveness, with project sizes typically involving 2-5 team members. Specific project costs were not disclosed, but overall satisfaction with pricing was emphasized.

    This summary is based on verified Clutch reviews.

    Most Common Project Size

    < $10,000 based on 21 reviews
    < $10,000 $10,000 - $49,999 $50,000 - $199,999 > $200,000

    Select a service to see pricing information

    THEY.dev Review Insights

    Overall Review Rating

    5.0
    • Quality 4.9
    • Schedule 4.9
    • Cost 4.9
    • Willing to Refer 5.0

    Top Mentions

    Review Highlights

    • Areas for Improvement in Design Creativity

      While generally praised, some clients noted that design aspects could be more imaginative. This suggests an opportunity for THEY.dev to enhance their creative offerings in design.

    • Proactive Problem Solving

      THEY.dev is lauded for their proactive approach to identifying and solving problems. They offer creative solutions and technical recommendations that enhance project outcomes.

    • Strong Client Relationships and Trust

      Numerous reviews highlight the trust and strong relationships THEY.dev builds with clients. Their dedication to projects and transparent communication fosters a sense of partnership.

    • Flexibility and Adaptability

      The team is noted for their flexibility in adjusting team size and scope based on project needs. This adaptability allows them to efficiently meet client demands and maintain cost-effectiveness.

    • Client-Centric Approach

      THEY.dev is recognized for their client-focused approach, listening to client needs, and tailoring solutions accordingly. Their commitment to understanding business goals and delivering value is frequently mentioned.

    • Positive Impact on Business Growth

      Clients report that THEY.dev's work contributes significantly to their business growth, including successful product launches, increased user engagement, and improved operational efficiency.

    THEY.dev Reviews

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    Web Dashboard for Sustainability Data Analytics Company

    • Custom Software Development
    • $10,000 to $49,999
    • Aug. 2019 - Mar. 2020
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "Everything was grand."

    Aug 4, 2020
    Founder, Susterra Ltd
    James Dent
    Verified
    • Energy & natural resources
    • London, England
    • 1-10 Employees
    • Online Review
    • Verified

    TH-EY developed a web-based dashboard for a sustainability data analytics company. Working Dash, the team built both the front- and backend of the system.

    Showing 31-31 of 31 Reviews

    Clutch verification provides an additional layer of data to help you make the right purchasing decision of business services.

    Learn More
    Verified Client Reviews
    28
    Overall Review Rating
    5
    Source
    Clutch
    Last Updated
    January 22, 2026

    Business Entity

    Business Entity Name TH-EY S&D Ltd
    Source Companies House
    Jurisdiction of Formation United Kingdom
    Date of Formation October 26, 2017
    Status Active
    Last Updated April 4, 2024
    ID 11033177

    Credit Report Results

    International Credit Risk Assessment Very Low Risk
    Source Creditsafe
    Last Updated April 4, 2024
    Learn More About The Clutch Verification Process

    Locations (2)

    3 Wingfield Road LondonEngland E17 9NN

    2 - 5

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    Piotr Zaniewicz

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