THEY.dev Logo

THEY.dev Verified Company

LondonUnited Kingdom

THEY.dev has multiple offices.
The head office is in London, United Kingdom

Founding Year 2017
Team Size 10-49
Cost of Services $$$$$ $30-70/h

We create bespoke software for startups. Our goal is to make our clients successful through technology. We work closely with our clients to understand their needs and propose cost-effective solutions. We believe in transparency and honesty, giving access to the code from day 1. We are a UK company located in London.

WHAT WE DO:

  • create bespoke web (browser-based) applications
  • create bespoke mobile applications
  • build innovations for startup
  • maintain legacy applications

HOW WE WORK:

  • we listen closely to our customers to understand what is the problem they want to solve
  • we provide free estimations of the projects with a full breakdown of build items
  • we operate in a highly agile manner, talking with the client frequently, doing demos and deploying the software to test as soon as possible
  • we build long term relationships

THEY.dev at a Glance

Who Founded THEY.dev?

How many projects a year does THEY.dev deliver?

What is THEY.dev average cost per project?

What are THEY.dev company values?

Profile strength: Excellent

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TOP! THEY.dev is one of those reputable companies that have a strong profile on TechBehemoths. Based on their experience, client references, testimonials, portfolio, you can rely on their competence. You can confidently contact them and send your project inquiry. THEY.dev is ranked in the top 44% among all 43,000+ IT companies on the platform.

Locations

HEADQUARTERS

3 Wingfield Road
London E15 1LP
United Kingdom

Other locations

Rynek Główny 28
Kraków 31-010
Poland

Speciality

Main Services Focus
  • Custom Software Development
  • Web Development
  • Mobile App Development
  • Web Design
  • UX/UI Design
  • IT Strategy Consulting
  • IT Managed
  • IT Staff Augmentation
  • IT Consulting
  • Application Management & Support

Client Focus

  • 50% - Small Business ($500k - $1M)
  • 35% - Starting to scale (<$200K)
  • 15% - General partnership ($200k - $500k)

Industry Focus

  • Financial services
    8%
  • Education
    5%
  • Information technology
    5%
  • Legal
    5%
  • Real estate
    5%
  • Transportation
    5%
  • Other industries
    5%
  • Business services
    25%
  • Consumer products & services
    25%
  • Health Care & Medical
    2%
  • GPS, Navigation & GIS
    10%
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THEY.dev Stats
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You can learn more about company stats on TechBehemoths in this article.

General

How THEY.dev compares to other companies based on profile strength?

See how THEY.dev is positioned among 5950 companies from United Kingdom based on profile strength. An excellent rate means that you can trust this company and initiate successful partnerships.

Pricing

How much does THEY.dev charge for their services compared to other companies in United Kingdom and London?

THEY.dev charges between $30 - 70/hour, meaning that the cost of their services in United Kingdom is below average. This is perhaps a sweet spot. A well-optimized cost structure. It could definitely be a win in the end, but don't forget about your due diligence before hiring..

Services

How many services does THEY.dev provide compared to other companies?

THEY.dev covers 29 services in their current region or area. This means that the company offers a high range of services compared to their competitors. That's great, but do your due diligence before. Too many services are also tricky. It might be that the company is a superstar indeed, but at the same time, they could be overwhelmed with just a little of everything.

Year

When was THEY.dev founded?

THEY.dev was founded in 2017. According to TechBehemoths data, 106 companies were founded in United Kingdom in that year. Compared to other companies, THEY.dev is established in the market. Reliable. Most of the companies operating since then have gained valuable experience, learning from their mistakes and therefore help you with a great experience further on. You should feel in good hands with them.

Portfolio

just dormant accounts Web application with Companies House integration
MyPosPro Web application | Point Of Sales
LeanBuild cloud based project management software
Urbanite discover Londons pubs and restaurants
HelloHosty AI Guest Communication Assistant
Onboard Web HR platform
Beautilio Mobile app for online bookings
Common Surface Web app for managing hybrid work
Hatchpad
M01 – Complete restaurant management system
5.0

From 3 reviews

  • reviewed on 20/1/2026

    Professional, smooth, and reliable cooperation

    Really enjoyed working together. The process was smooth from start to finish. We needed a proactive partner, and THEY delivered. Not only was communication a breeze, but THEY also brought some fresh ideas to the table. The final result is exactly what we were looking for.

    Budget

    5.00

    Quality

    5.00

    Schedule

    5.00

    Communication

    5.00
  • reviewed on 12/10/2025

    Review TH-EY

    TH-EY supported us in the development of our MVP for our SaaS platform, focusing on both backend and frontend components. The team was responsive, solution-oriented, and willing to adapt based on feedback. While the project involved some complexity and learning along the way, we appreciated their flexibility and dedication to getting results. The engagement helped us take important early steps toward validating our product.

    Budget

    5.00

    Quality

    5.00

    Schedule

    5.00

    Communication

    5.00
  • reviewed on 28/11/2024

    Super friendly team and brilliant delivery

    The team at Th-ey have been fantastic in terms of speed, quality, and flexibility. We've worked with many 3-rd party developers in the past and we were very impressed by how independent they were compared to our previous experiences. We had limited resources in the product and design space and the Th-ey developers did a lot of problem solving without our hand-holding. They flexed the size and seniority of their team to match the project needs switching between a thin senior team vs. a larger junior one depending on whether they needed more architecture resource or to speed up delivery speed. The team was staffed with their own designer and QA allowing them to optimise their own internal working practices and deliver an enormous amount of value at great speed. Finally, it's worth noting the team were a pleasure to work with, always available, and I would happily work with them again.

    Budget

    5.00

    Quality

    5.00

    Schedule

    5.00

    Communication

    5.00

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