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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

Select Focus Area
Application Platforms
Amazon Application Development Framework
85%
Azure Platform
10%
Digital and IT Strategy Consulting Focus
IT Operations Management Consulting
50%
Frameworks and CMS
Spring MVC
20%
Other frameworks and CMS
10%
Programming & Scripting
Java
30%
Typescript
15%
SQL
10%
HTML5
5%
Python
5%
Redux
5%
XML
5%
User Experience Focus
Industries
Business services
10%
Consumer products & services
10%
Education
10%
Financial services
10%
GPS, Navigation & GIS
10%
Gambling
10%
Medical
10%
Other industries
10%
Real estate
10%
eCommerce
10%
Clients
Small Business (<$10M)
85%
Midmarket ($10M - $1B)
15%

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 offers competitive pricing and strong value for cost, with clients noting their budget-friendly services and effective project management. Projects typically involve 2-5 team members, delivering on time and within budget, enhancing overall client satisfaction.

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

  • Flexible and Responsive Team

    The team at THEY.dev is noted for their flexibility and responsiveness. Clients appreciate their ability to quickly adapt to changing project scopes and needs, as well as their prompt communication through virtual meetings, Slack, and email.

  • Value for Money

    Many clients choose THEY.dev for their competitive pricing and the value they deliver. The company is often seen as providing good value for cost, making them an attractive option for businesses with budget constraints.

  • Expertise in Multiple Industries

    THEY.dev demonstrates expertise across numerous industries, including SaaS, e-commerce, finance, and medtech. Clients appreciate their ability to provide tailored solutions that meet specific industry needs, such as auditing platforms, e-commerce dashboards, and cloud-based systems.

  • Effective Project Management

    Reviews highlight THEY.dev's effective project management, often characterized by timely deliveries and structured workflows. Clients value their use of tools like Jira and Trello for task management and their ability to keep projects on track.

  • Room for Improvement in Estimation

    While generally positive, some reviews suggest THEY.dev could improve their initial budget estimations. A few clients mentioned projects going over budget, indicating a potential area for refinement in cost forecasting.

  • Strong Technical Knowledge

    Clients consistently praise THEY.dev's strong technical knowledge, particularly in web and app development, cloud services, and API integrations. Their ability to deliver high-quality technical solutions is a recurring theme in reviews, with many noting their proficiency in Java, React, and AWS.

THEY.dev Reviews

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Chrome Extension & Web Dev for Online VPN Service

  • Custom Software Development
  • Less than $10,000
  • Oct. - Jan. 2020
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"They quickly understood my requirements and provided useful feedback to improve the solution."

Dec 2, 2020
Founder, Online VPN Service
Anonymous
Verified
  • Telecommunications
  • London, England
  • 1-10 Employees
  • Online Review
  • Verified

TH-EY developed a website and a Chrome extension for an online VPN service. They used technologies such as HTML, CSS, JavaScript, and more. The vendor provided one developer and a technical project manager.

App Development for Social Media Startup

  • Mobile App Development
  • $10,000 to $49,999
  • Mar. 2020 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"They actually listen to our ideas, spend time thinking about them, and then come back with ideas and solutions."

Jun 26, 2020
Co-Founder, Social Media Startup
Anonymous
Verified
  • Information technology
  • London, England
  • 1-10 Employees
  • Online Review
  • Verified

TH-EY developed a mobile app for a social media startup. The team started by building out the client's MVP and went on to develop the full version of the platform.

App Development for Restaurant Ordering Platform

  • Mobile App Development
  • $10,000 to $49,999
  • Sep. 2019 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"I can trust these guys with everything!"

Jun 24, 2020
CEO & Founder, M01
Harri Siekkinen
Verified
  • Hospitality & leisure
  • Helsinki, Finland
  • 1-10 Employees
  • Online Review
  • Verified

TH-EY developed a mobile app for a restaurant ordering platform. The team built both an iOS and Android version of the app and provided consulting services.

Web Development & Support for Rental Community Platform

  • Web Development
  • $50,000 to $199,999
  • Oct. 2019 - Ongoing
5.0
Quality
5.0
Schedule
4.5
Cost
5.0
Willing to Refer
5.0

“TH-EY is the best development company I’ve ever worked with.”

May 20, 2020
CEO, Hatchpad
Alex Gnyla
Verified
  • Real estate
  • London, England
  • 1-10 Employees
  • Phone Interview
  • Verified

TH-EY handles web development services for a PropTech software company. After completing an in-depth audit, their team is building the website's backend and already wrapped up some frontend UX design.

Dashboard Design for Clothing Software Company

  • Custom Software Development
  • Less than $10,000
  • Oct. - Dec. 2019
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"They have truly walked the extra mile to make solutions to fit with our budgets...."

Jan 14, 2020
Director, Seamless
Kim Trager
Verified
  • Other industries
  • London, England
  • 1-10 Employees
  • Online Review
  • Verified

TH-EY built a prototype of a customizable, lightweight dashboard for a clothing industry software solution. They provided IT consulting services and created documentation for the prototype as well.

Backend Systems Automation for IT Company

  • Other IT Consulting and SI
  • Less than $10,000
  • Sep. - Oct. 2019
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"Every member of the team was highly experienced and is able to find elegant solutions..."

Jan 9, 2020
Project Manager, Pixable
Anick Akbar
Verified
  • Business services
  • London, England
  • 1-10 Employees
  • Online Review
  • Verified

TH-EY provides development support. This has involved automation, third-party integrations, and app development.

Website & App Dev for Consumer Services Company

  • Custom Software Development
  • $50,000 to $199,999
  • Dec. 2017 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"Their communication has been excellent—they’re super responsive..."

Jul 8, 2019
Own-Kind Ltd
Ruaraidh Grubb
Verified
  • Arts, entertainment & music
  • Londontowne, Maryland
  • 1-10 Employees
  • Online Review
  • Verified

TH-EY develops a website and an application based on provided wireframes. 

Landing Page Design & Development for Sales Consulting Firm

  • Web Design Web Development
  • Less than $10,000
  • Nov. 2025 - Jan. 2026
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"THEY.dev's readiness to take the time and effort to create an excellent project despite the small scope stood out."

Jan 22, 2026
CEO, Meaningful Sales
Piotr Zaniewicz
Verified
  • Advertising & marketing
  • Wroclaw, Poland
  • 1-10 Employees
  • Online Review
  • Verified

THEY.dev designed and developed a landing page for a sales consulting firm. The team used a Webflow template to create the page, update the copy, and align the visuals with the client's brand.

Custom Software Development for Streaming Solutions Company

  • Custom Software Development
  • React Native
    +2
  • $50,000 to $199,999
  • Jan. 2023 - Nov. 2024
4.5
Quality
4.5
Schedule
4.0
Cost
4.0
Willing to Refer
5.0

"We worked directly with the developer, Cristian, which worked very well for us."

Dec 30, 2024
Founder, recdek
Ed Rigg
Verified
  • Arts, entertainment & music
  • London, England
  • 1-10 Employees
  • Online Review
  • Verified

TH-EY developed a technology platform for a streaming solutions company. The team was responsible for implementing new features and launching the platform.

CMS & Web Dev for Research Company

  • Custom Software Development Web Development
  • $200,000 to $999,999
  • Sep. 2022 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"They delivered on time and understood and acted on any feedback very quickly."

Nov 18, 2024
Director, PRS
Dan Whittle
Verified
  • Politics
  • London, England
  • 11-50 Employees
  • Online Review
  • Verified

TH-EY has developed a CMS for a research company. The team has built a complex workflow system that will help deliver thousands of documents every year.

Showing 11-20 of 31 Reviews

Packages we offer:

UX Services

Improve your app's key metrics with our UX services. If you don't measure KPIs or don't know what to measure, choose Small Tier. 2nd tier is best for apps fighting to get more users. Choose Large Tier if your app has users signing up, but you want to improve retention.

Small

Start measuring, setup analytics and KPIs

$380 /total
  • Web analytics setup
  • Mobile analytics setup
  • KPIs definition
  • KPIs dashboard setup
  • 1 week delivery

Large

Improve user retention with advanced UX Audit

$2,689 /total
  • Web analytics setup
  • Mobile analytics setup
  • KPIs definition
  • KPIs dashboard setup
  • Landing page UX audit
  • 3 week delivery
Features

Small

$380

/total

Medium

$888

/total

Large

$2,689

/total

Web analytics setup

Mobile analytics setup

KPIs definition

KPIs dashboard setup

Landing page UX audit

Signup process UX audit

App Store/Google Play analysis (when applicable))

Introductory workshop

UX audit of key user flows

Report with prioritised recommendations to improve KPIs

Small

$380

/total

Web analytics setup

Mobile analytics setup

KPIs definition

KPIs dashboard setup

Landing page UX audit

Signup process UX audit

App Store/Google Play analysis (when applicable))

Introductory workshop

UX audit of key user flows

Report with prioritised recommendations to improve KPIs

Medium

$888

/total

Web analytics setup

Mobile analytics setup

KPIs definition

KPIs dashboard setup

Landing page UX audit

Signup process UX audit

App Store/Google Play analysis (when applicable))

Introductory workshop

UX audit of key user flows

Report with prioritised recommendations to improve KPIs

Large

$2,689

/total

Web analytics setup

Mobile analytics setup

KPIs definition

KPIs dashboard setup

Landing page UX audit

Signup process UX audit

App Store/Google Play analysis (when applicable))

Introductory workshop

UX audit of key user flows

Report with prioritised recommendations to improve KPIs

Our Story

Two developers left corporate in 2017 because they believed software gets better when clients talk directly to the people building it. No layers, no translators. That's still how we work - a remote team of 25, where developers lead projects and own client relationships. Eight years later, the longest client relationship we have is still running.

What Sets Us Apart

No middlemen

There are no project managers sitting between you and the team. The developer on your project handles communication, owns the timeline, and is your main point of contact throughout.

A team that sticks around

26 of our projects have run for 2 or more years. Clients don't tend to leave because the people they're working with feel like an extension of their own team, not a rotating roster of contractors.

We advise, we don't just build

Every developer is expected to understand your business goals, not just the technical brief. That means you get someone who'll question the approach, flag a better path, and think about what actually moves your business - not just close the ticket.

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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