Union Works

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  • Shopify Expert since 02/2016
  • Projects starting at $500


About Union Works

Formally known as Leumas Digital...We specialise in warehouse integration, 3rd party app/API integration, Shopify and private app development, recurring payment product builders and website builds

We are a development and Store Setup Agency based in the UK.

We have worked on a wide variety of projects ranging from custom coded Shopify templates, warehouse integrations and custom web app development.

We specialise in backend development and complex front end development!

Check out some of our apps:

55 Testimonials


Union Works have done several great jobs for us including developing subscription a functionality - Sam is a pleasure to work with

My Good Luck Charms

Union Works has been working on our store, updating our theme, fixing errors and helping with certain App integrations. They have been very responsive and professional about the entire process. I would highly recommend them for anyone struggling with their Shopify store.

Georganics Trade EU

Very professional, helpful and always making sure your requirements are understood.

WaterAid - Shop for Life

We worked with Union Works to rebuild the connector app for the WaterAid Shop for Life store. They helped us to define the requirements for the project, and communication was quick and clear throughout. The project was well organised - it was easy for us to track progress and collaborate - and was delivered to a tight deadline. The app integrates seamlessly with our store and gives us greater control over order fulfillment. It handles complex integrations with dotdigital for email and our fulfillment partner for physical delivery. We look forward to continuing to work with Union Works to maintain and develop the app further.

kiko+ & gg* USA

Union Works helped us with a major redesign of our US Shopify web-shop. The project included a large variety of tasks, from building custom forms + functionality to custom building the home page & product pages.

We were really pleased with the quality of work, everything was built in such a way that we could easily continue to tweak and customize as we want.

From the beginning the team helped to structure the project nicely so it was easy to stay on track. They were also very responsive with any questions and resolving issues, even beyond the project which was really appreciated.

Lastly, they are just all around nice guys and very pleasant to work with. We researched a lot of Shopify experts before selecting Union Works and were definitely happy with our choice! Thanks Sam & James!


Our shop is developed in sprints, and we are often adding new stuff like apps etc. And therefore it is essential for us to have easy access to experienced Shopify hackers that take care of our ongoing coding and development on short notices. James has been our steady go to hacker since the start, and no matter how complicated or small the task is, I can always trust him to code or fix what we need, in a way that makes our shop scalable and safe. James will not only provide proper code but also fix and keep your code clean as your shop is developing.

( did you know installing and uninstalling apps could make a mess in your code ? If not, make sure to use a hacker that cleans it up now an then so that you don't end up with an unstable code where changing small things can go very wrong )

Preben Lugg


These guys are amazing! I wanted to build a custom integration from Clickfunnels to Recharge (Shopify app) and have contacted more then 20 different Shopify developers, most of them either couldn't understand the project or their prices were out of this planet! But not Uninio Works! These guys are real professionals, they understood what I need straight away, only after one call they got it all right, I also was really surprised by how fast they managed to finish the project. Seems like these guys are really passionate about what they are doing! Union Works actually listen to what you have to say and most important - they speak human language ( not like most developers). Outstanding ease of communication(special thanks to Sam), flexibility, attention to details and quality. I am very happy with the end result! Thank you guys! It was real pleasure working with you.


I was in contact with James. The work went very smooth. He respected the brief perfectly and he reacted on the feedbacks very quickly. I can only recommend him. Very good experience to work with him

Sock Ons USA

We have been working with Sam for almost a year now and he has always been very obliging in helping iron out all the issues we have had with our site. Thanks to the whole team.

Healthy Formulations

I had a complex checkout with a free trial utilizing Recharge's advanced workflows and Union Works was able to deliver a complex solution on time and on budget. Would definitely recommend for Shopify work, especially if you need help integrating with Recharge.

The Linen Works

It has been an absolute pleasure to work with Sam and the rest of the Leumas team. We came to them to rebuild our site after some previous bad experience with developers and they really went above and beyond to deliver not only a site that solved all the previous problems that we were experiencing but also one that was more functional whilst still being a beautiful and easily navigational site.

After an initial face-to-face meeting with Sam, we were really impressed with his knowledge and experience. After finalising the brief, he was then really on board with joining our own project management system (Asana) and moving discussions, timelines and information all onto there which was really helpful to us in managing the project.

They were responsive, kept to deadlines and budget, nothing was too big a challenge and what really stood out to us were there drive to always look for new areas of development. They were always putting forward suggestions and never settling for the quick fix having really listened to what we needed from the site and its functionality.

We look forward to continuing to work with Leumas Digital and would absolutely recommend them (and have already done so!)


We have received a first class service from Leumas. From taking our brief to showing extreme patience in dealing with our never ending questions they have worked tirelessly for us. They have now designed three beautiful shopify stores for us. They are absolute experts at what they do and work really hard to achieve the best results for their clients. Not only that, they are really easy to get on with and extremely kind and helpful. Cant recommend highly enough.

Elliot Rhodes

We recently did some site upgrade work with Leumas...the job was handled really well and efficiently from start to finish. The initial job spec was clearly worked through to ensure we all knew what was expected, timelines were maintained, communication was constant and there was no sign off from them until we confirmed we were really happy with all the details, however small. I also know that should any tweaks be needed they are going to be there to help. Highly recommended.

Watches of Wales

Leumas Digital are an outstanding service provider, we have had our fair share of problems with developers in the past working on our website www.watchesofwales.co.uk so set out to find an experienced Shopify expert.

Leumas Digital were breathe of fresh air, Sam and Charles are extremely knowledgeable, professional and efficient and we would highly recommend them.

Audible Fidelity Ltd

Leumas Digital took our brief and asked all the relevant questions, especially where we may have not considered all of the options, and delivered the project on time and budget. Both Sam and Charles were great with first class communicaton throughout.
Wouldn't hesitate to work with them again or recomend to others.


Leumas is the answer!
No doubt the best Shopify agency I have worked with, in terms of honest effective hours of quality. It easy to tell that they have wide experience with Shopify and all kinds of integrations. If Im not sure about whats best for mye shop, or my clients, I will ask Leumas for help.

ColdCuts // HotWax LTD

We came to Leumas Digital with a customised app project. Throughout they were extremely responsive; easy to talk to; understanding of any concerns and to top it all off they completed the project ahead of schedule. Highly recommended! We look forward to working with them for future projects.

Havkasse AS

Working with Leumas Digital have been a very good experience.
They are very professional and able to deliver projects ranging from the simple webshop to more advanced apps and plattforms. Leumas have built all our custom solutions and a advanced system for creating and handling affiliate shops in our own system.
I would prefer to keep them for my own use, but If you have a great project or plan and wonder who to use, my reco would be to have a chat with Samuel in Leumas and he will be able to tell you exactly what you need and where to go.

Beauties Factory UK

Speaking with Sam I was blown away by his indepth knowledge of all things related to Shopify
The advice they have provided us with will make an invaluable difference to our business, Sam provided points that had been missed by other so called experts we have had do work for us and he was lighting quick at providing the information to us.
Overall this company is a 10 out of 10 in my book and would have no qualms in recommending and using them in the future


Sam and Charles at Leumas did a brilliant job when integrating our Shopify store with a large outdoor retailers drop ship API.

Even though the API was well documented there were quite a few challenges with the data quality at times but, Leumas showed tenacity, patience and perseverance as we got the complex project live.

We are now busy scoping a phase two to push the capabilities of Shopify even further and planning on using Leumas for future integrations as well.


We have been very impressed with the service we received from Leumas Digital. They fulfilled the brief we set and explained every step to us very clearly. They worked within the time frame and actually completed before the due date. After completion of the project they remained very accessible and available to is to deal with all our queries. I would have no hesitation in recommending them. Percy and Nell.

The Handmade Cyclist

I found Leumas Digital via Shopify Experts as I needed a developer that could relaunch our website using a lot of custom design. It was a real leap of faith and step into the unknown to use someone we hadn't worked with before. Would they deliver? From the very first contact they gave us brilliant service. Not only is the website fantastic, they were on budget, they went over and above the call of duty at times to get it right and were incredibly patient when I didn't understand tech things. Nothing felt like it was too much trouble. Finding them was like finding gold dust. A real pleasure to work with and Sam and Steve know their onions. Very professional, I wouldn't hesitate for a second to recommend them.


We've been working with Sam, Charles & James for a number of years. They are all technically adept and commercially aware - a rare combination - and always happy to listen and accept feedback. They are a pleasure to work with and I wholeheartedly recommend them.

Steven Wood, Director
Equus England, https://www.Equus.co.uk


From the moment I started initial discussions with Leumas Digital, they provided me with new insights and listened carefully to my many suggestions.

Being a start up business, and Creative Director, they were happy to take my basic Mac visuals and flesh out the framework of the total website quickly, which helped me a great deal as it allowed me to concentrate on other aspects of my business.

The team were available to answer my frequent questions on email and carried out any tasks promptly and efficiently, but most importantly, they offered suggestions which is appreciated.

Overall, the team are very easy to do business with and have the in depth knowledge that’s needed in order to make an e-commence business effective in targeting much needed customer’s.

To date, Leumas Digital have become a trusted partner and I now see them as an extension of my business as it begins to navigate the retail marketplace.

Dean Pinnington.
Founder. Creative Director. B I T F L E K.


Quick, great communication, and very flexible to our many requests. Couldn't recommend them highly enough


Leumas Digital was able to assist us with many website improvements. The most recent project being an app that we needed to use that essentially converted DHL Express orders into a certain format after checkout before they reached Shopify. This was particularly tedious as it required building an app that mimicked the orders after the customers checked out, placed them into a certain format and took into account many other variables. Not only did they do this flawlessly, but the app they build in less than 2 days worked perfectly the first try! They always find out of the box solutions for us and no 'problem' is ever too hard for them. We truly enjoy working with them!

INDEX Food Company

Leumas Digital was great to work with. Their communication was quick and comprehensive and their development work was flawless. Sam and his team made me feel at ease and I knew immediately that I was in good hands.

Futura Direct

Work was completed professionally and in a short period of time, mid-project changes were made easily, no issues whatsoever.

Really quick and easy to communicate with about project goals and progress, regular updates via email and phone were also very helpful.

Sam was clear and concise during discussions which meant we were always on the same train of thought, arguably the most important part when working with a 3rd party on something as complex as web development.

Hawk Wargames

The team from Leumas Digital were brilliant on this project. From specification, through to delivery, and with regular communication, they brought an idea to reality with their diligence and intelligence. It is so good to work with a team of skilled practitioners, and this project was smooth from start to finish.

I would recommend this team to anyone who is looking for a Shopify development. This delivery was high quality, intuitive and the development team listen to the requirements of the client!


Wonderful experience with Sam and the team. Recommended!

Falcon Enamelware

They have been very professional and helped us a lot during the whole process. I would highly recommend their service.

My Gift Nation

Sam and the team were great to work with while setting up our store. We had some very specific demands early on for our site that they worked on us with. Sam came to our office and worked through each of our requirements being very honest about what could and could not be done.
The time management of Leumas was excellent. We laid out a 3 week development plan and they delivered exactly what we wanted on the day.

Easyfit Meals Inc.

Sam and his team exceeded our expectations. We wanted a website that would allow our clients to build a profile and select their preferences. They helped us develop an interactive site that has helped us streamline our operations and ordering process. They developed a "meal plan builder" that would take our clients step by step to build their profile and select their meal preferences. They invested the time to understand our plan and with their input we were able to find develop exactly what we needed. In addition to all of their help, they were extremely attentive and any questions or issues we ran into they were quick to help resolve. We will continue to work with Leumas Digital for future needs and I would recommend them to anyone looking to build an interactive website.

MoYou London

From start to finish they were really responsive. They finalised our project in the expected time and made all the changes of our requests with no hesitation.
Definitely would recommend!

WearMe Pro

Leumas Digital is a talented and very professional team. I always received my work in a timely manner and I felt as my needs were always met and even exceeded. Sam was always there to answer all my questions and listen to my feedback. I look forward to working with them in the future!

Hopt Shoreditch

Leumas are great to work with. They have excellent experience on the platform, and always come up with quick and innovative solutions for us.

They are responsive and reliable.

Highly recommended

Sterling Toggle

Sam designed a custom RFQ page for us and was attentive and the work was done in an expeditious manner. He was quick to respond to all our edits and a pleasure to work with. Highly recommended!

Ragdoll LA

Excellent! Got a reply within minutes. Great service and result, super polite and effective. The job was completed within an hour- amazin! -totally recommend Leumas Digital.

Dr Gaye

Leumas Digital have been fantastic from our first request for information about developing a new site right way through to completion of the project.

From the initial conceptual designs, we felt they really understood our business and us personally, but most importantly they successfully converted the concepts into a live, working site which matches our expectations.

Anyone involved in website development will know the success of a finished site is often all about the little details, whilst this can be challenging during the development process guys at Leumas Digital accommodated all these adjustments with good candour and delivered a beautiful, functional site for us. Their positive attitude and willingness to deliver is refreshing and an asset to them.


We used Sam and Charles to help develop something for our website, they were extremely understanding and easy to work with. I'd highly recommend anyone to use this company, their professionalism is exceptional.


Sam and Charles were an absolute pleasure to work with. We've had some rough development experiences in the past, and we were concerned about finding the right team to set up a Home Try-On program for our store. The program we desired was quite complicated - users would be able to order items, for free, to their door to try on, while we authorized the full retail amount to their card to be charged if they decided to keep any items. We also only had a tight deadline of a week to complete it!! Sam and Charles were incredibly responsive (I've received e-mails from them on Sunday, and even on Sam's birthday!) and most importantly, they delivered a bug-free and beautiful final product. Perhaps the most important part is that they genuinely seemed to enjoy the challenge and were so willing to try different tactics to get the right result. We're quite astounded that such a technical and vital part of our marketing strategy has been so seamlessly completed. We can't wait to work with Sam and Charles again!


Leumas Digital is very kind! The guys finished my first Order very very quick and competent!
All issues were done really quick! The guys are very knowledgeable and kind! Very easy contact via E-Mail and/or Skype!

I will definitely instruct Leumas Digital often in the future!

Good Job, Guys!


Been working with Sam for few months. (days and nights :) He was always very helpful, responsible and trustworthy.
Would definitely continue working with him as well as recommending to my friends!


Great experience, highly recommend. Very fast at completing the task. Professional, reliable and friendly.


I'm new to the shopify platform and not a coder or a CSS guru. I needed some functional changes to my site and found Leumas Digital (Sam and Team) based on a post. Sam replied and very quickly, he was able to understand what I needed. We settled on the price and the scope of work and Sam and Team got it done in short order. If this is what I can expect from Leumas Digital ... great communication, a fair price and outstanding work, then I will be sending them more work.

Five stars from me — nice working with you guys!

galerie 6

Great creativity, reliable communication. Very pleased with what Leumas Digital has created for us all within a perfect time frame.


Raw Food Central

Working with Samuel was great. He is quick to understand and got the job done right the first time. If you have some updates in mind for your Shopify store, talk to Sam about them. He can make the process much quicker and easier than you would expect. Thanks Sam!


Fast, reactive and professional. We definitely recommend.

Karolina Laskowska Lingerie

Excellent service provided and highly recommended! Responded quickly and efficiently to all issues and I'm extremely happy with the changes made to my store. Many thanks!


I cannot speak highly enough of Sam and Leumas Digital. Our experience hiring an expert could not have gone more smoothly.

Sam was incredibly responsive throughout the entire process. While Leumas Digital is UK-based, there were no issues whatsoever with the time difference or anything else. Sam was thorough and clear in all communications -- very professional. He completed the job for us a day before schedule too.

We will definitely be contacting Leumas Digital in the future if we have any additional development needs.

Victory Colours

Very pleased with the work and professionalism. All the work was done on time and staff are very friendly to work with. They explain everything really well and walk you through all the work done. Will definitely call upon their services for any further work required to our site.

Would recomend them highly.
Thank you

Infinitely Classic

Sam was a delight to work with. He not only finished my site in 2 days, he did it flawlessly and was very kind.

He made my shop site look exactly like my blog.

Thank you Sam for your amazing work!

- Mariam

MY Food Lifestyle

MY Food needed a fully responsive eCommerce site and were delighted to find Leumas.
They dealt with the design, the functionality and bespoke eCommerce for our shopping cart. Everything was handled efficiently and delivered on time, they're knowledge and expertise really showed.
After the site went live we continued to use Leumas to integrate trigger marketing, which has basically revolutionised the way we communicate and increased our sales.
We will continue to work with Leumas, as finding a consultant who takes the time to understand your business and delivers more than you ask for is rare.
Absolutely no hesitation in recommneding

SIXPAX - Fresh Macro Meals

Excellent service from start to finish. Leumas are knowledgeable, capable & they get the job done. I would highly recommend :)

Muscle Mutt Fit

We have worked with Leumas for just over a month and I couldn't be more delighted with how they have performed. They have helped shape our business strategy and digital activity.

The level of expertise they provide is by far the best we've worked with and we are already starting to see fantastic results from the changes they have put into place on the website and the marketing activity set up.

Finally, Sam & Charles are a pleasure to work with. They are friendly, hard working, honest and true experts in their fields.

We strongly recommend Leumas Digital if you are looking to improve your conversion rate, development work and driving traffic to your website.

Thanks guys!

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