Digital Excellence Built Together
Prime Holding JSC is a product innovation company that excels at developing disruptive digital experiences. We push the limits of technology to achieve business goals, drive digital transformation, and deliver innovative solutions in the areas of FinTech, Blockchain, SalesForce, and Network Infrastructure.
We are your trusted partner in building premium products:
- Prototyping and Design - UX Research and Consulting, Design Thinking Process creation and execution.
ong>Product Architecture - Choosing the right architecture patterns and setting up the scene. - Product Development - Our innovators are fluent across platforms and eager to deliver ingenious solutions using modern agile tools and methods.
Startups and Fortune500s alike trusted us with their digital transformation projects as we are a proud partner of IBM, Nestle, Schneider Electric, Contour Global, Lykke, Lykke Business, Smart Valor, Mashreq Bank, ADCB, BNP Paribas, Raiffeisen, EMAAR and others.
Tech Stack: Java, .NET, JavaScript (React, Angular, Vue, etc.), iOS, Android, Flutter, Apex, PHP, Python, C++, Solidity, SQL and NoSQL, Amazon, Azure, AWS.

headquarters
other locations
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1, 11 Avgust Str.Plovdiv, 16 4000Bulgaria
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27, Bulgaria Blvd.Veliko Tarnovo, 04 5006Bulgaria
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109, Vladislav Varnenchik Blvd.Varna, 03 9000Bulgaria
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47, Todor Aleksandrov Str.Blagoevgrad, 01 2700Bulgaria
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8, Milojka Lesjanina Str.Niš 18000Serbia
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27T, Dehtiarivska StKyiv, KV 02000Ukraine
Focus
Recommended Providers
Portfolio
Blue Chip Companies, Fortune 500 companies, Startups and Scaleups from USA, UK and Switzerland

Primer - PM, HRM & Administration tool
About the project
Primer is a multi-company and -office Project Management, HR Management and Administration tool that helps you manage financial, project and employees' data in an easy and intuitive way.
Primer enables personalized access to data based on user roles and permissions. From regular developers to project managers, account managers and financial administrators - all employees enjoy a tailored experience.
Some of the features include:
- Employee profiles
- Flexible benefits management
- Effortless report generation
- Inventory tracking and management
- Financial and billability reports
- and many more
JIRA, LDAP, Active Directory, Google Auth, Redmine, and Evrotrust Integration allow you to collaborate easily with your clients and team members.
How we helped
Primer was developed in response to our own need for an all-in-one software tool that will allow us to stay on top of our multiple businesses. The companies under the umbrella of Prime Holding operate in different countries and cities, and yet they are working together as if everyone sat in the same office. Therefore, we created a flexible tool that covers all aspects of our modern software development company.
General info
- Technologies: ASP.NET MVC, ASP.NET Web API, jQuery, MS SQL, JavaScript
- Domain: PM, HRM, Administration
- Team: Team size varied over the years from 5-10 people.
- Duration: 4 years (ongoing)

HiCash - Personal Finance Manager
About the project
With HiCash you can manage your personal or business finances quickly and easily. Different categories, such as income, expenses, assets, and liabilities, along with many subcategories, allow you to have an instant overview of your cash flow.
The option to share accounts provides easy tracking of your household or business cash flow. HiCash also automatically generates reports for a specific period of time (weekly, monthly, yearly, or by custom criteria) in the form of interactive graphs.
How we helped
We had to find a way to execute thousands of transactions in milliseconds without delays regardless of the time a transaction is executed. The team came up with an optimal solution which does not demand any extra queries that might prolong the execution time.
General info
- Technologies: .NET core, Angular.js, MS SQL, Docker
- Domain: Financial Services
- Team: 2 Angular Developers, 2 .NET core developers,1 UX/UI Designer, 1 QA Engineer 1 Project Manager, 1 Product Owner
- Duration: 2 years

SizeСatch - Personal tailor in your pocket
About the project
This app recommends the right apparel size based on a 3D model generated from user photos and body measurements.
The process is simple - users provide only a couple of front and side photos of themselves, as well as their height and weight measurements. A 3D model is generated with 99.5% accuracy and is ready to use when choosing clothes. Based on data provided by our partners we suggest the right apparel size for each user.
How we helped
The solution was complex in terms of implemented technologies - neural network and custom algorithms, API, native iOS and Android apps. We performed a very detailed competitive research and identified a product niche. The team not only delivered the product but also provided the strategic vision for it. Meanwhile, we managed to achieve the following:
- Reach high levels of accuracy of human body measurements
- Reach high levels of 3D model accuracy and presentation
- Create and train a neural network
- Develop a well-documented API that could be used both internally and externally
The team created intellectual property in the domains of background subtraction, human body registration, human shape fitting, and measurement extraction.
General info
- Technologies used: Python, Django, Angular, SWIFT, Java, C++, Amazon Web Services
- Domain: 3D, fashion
- Team: 6 engineers, 1 QA, 1 Architect, and 1 Product Manager
- Duration: 18 months

Modern Money - Multi-signature wallet
About the project
Modern Money is a personal finance application that allows you to take control of your money and build your financial portfolio with both fiat- and crypto-currencies.
Modern Money is a multi-signature wallet, which is like a safe with two keys -one controlled by you and another controlled by the app. For additional security, every transaction is authorized by both a fingerprint and a PIN code. Thus, no one can take your money, even in case you lose your phone or have it stolen.
- Send and receive fiat and cryptocurrency
- Blockchain-powered integration and settlement
- Prepaid card integration, personal vault, paying bills
- Allows easy white labeling
How we helped
We acted not only as software development professionals but also as consultants on the project. We proposed the final vision for the product, changing it from a personal finance app to a mobile wallet with biometric authentication and payment integrations.
Beside these strategic product changes, we have also introduced a QA Automation framework improving release cycles and overall product quality. Thus, we were involved in all stages of product development, from UX/UI design to software development and testing of the product, as well as in the creation of go-to-market, client expansion, and white-labeling strategies.
General info
- Technologies used: Objective-C, Swift, Rx, Xcode, CryptoSwift
- Domain: Financial Services
- Team: 2-3 Software Engineers, 1 QA Engineer, 1 UX/UI Designer, 1 Project Manager
- Duration: 14 months

Algo Store - Crypto Exchange Platform
About the project
AlgoStore allows users to build automated trading strategies by creating unique and effective algorithms, using crypto or forex assets on the market. They can safely test and execute their algorithms on historical data, evaluating the potential effectiveness of their strategy before deploying it live without any risk of financial loss.
AlgoStore’s beautiful and easy to use interface can be enjoyed by traders with different experience levels - from enthusiasts to professionals. AlgoStore allows users to work with their favorite programming language. The architecture of the system guarantees a minimal reaction time and supreme performance due to the physical proximity of the servers and the use of the fastest communication protocols.
How we helped
We conducted a very deep user and market research, identified strong points of difference and points of parity and created a project plan to develop a product tailored specifically for certain user groups. Using the client's infrastructure already in place we were able to build a solid, market-ready product very quickly, which was essential for the market niche.
It was a very challenging yet interesting project for the whole team since we were able to build a modern system in an area of expertise, which was new to most team members. They have broadened their knowledge of the financial markets and developed a flexible and easy-to-use software product.
General info
- Technologies used: .Net Core 2.0 and 2.1, Microservices architecture, Angular, Microsoft Azure Storage, Kubernetes, TeamCity, Git, RabbitMQ, Redis
- Domain: Financial Services, Blockchain
- Team: Varied over time. 4 - 6. Net developers, 1 QA, 1-2 Frontend developers, 1 Architect as a consultant and 1 PM/PO
- Duration: 1 year

Smart Valor - Tokenized Investment Marketplace
About the project
Smart Valor wanted to develop an ICO platform with tokenization engine to host the public funding of companies and later facilitate the investment in digital assets. The aim was to develop a decentralized, community-based marketplace for tokenized alternative investments.
The platform enables investors to purchase cryptocurrencies, utility and security tokens in compliance with the Swiss law, as well as to manage their portfolios more efficiently.
How we helped
Due to the dynamic nature and high risk associated with cryptocurrencies we had to apply the highest security standards and have scalability in mind when designing and developing the system.
To support some of the requirements and facilitate business processes the team made several integrations with payment processors and enterprise applications. The system our team developed consists of microservices which were built, tested and deployed through CI/CD pipelines in Concourse.
General info
- Technologies used: Angular 6+, Java 10+, Spring Boot, PostgreSQL, Kubernetes (k8s), AWS
- Domain: Blockchain
- Team: 4 Back-end Engineers, 3 Front-end Engineers, 3 QAs, 1 DevOps Engineer, 1 Team Lead, 1 Product Owner, 1 UX/UI Designer
- Duration: 1 year

Real estate tokenization platform
About the project
This blockchain-powered real estate investing platform allows users to invest in international real estate properties from their smartphones with no bank account, no minimum investment size, and low transaction fees.
The platform is ideal for real estate asset managers as it acts as a compliance service to access the growing community of crypto investors. It also allows them to reach alternative funding through Initial Public Offering.
- Proven and audited smart contracts
- Compliant legal framework
- 10x lower cost to raise capital
- Access to the 265 billion $ crypto market
- Highly liquid secondary market
- Investor compliance (KYC, AML)
How we helped
As an early-stage startup, Tokenestate required our consulting services regarding the UX/UI design and front-end development of their product. In two months the team helped Tokenestate decide on the new design, developed the MVP and brought the Marketplace application demo to production using a mock-up API supported by Apiary.
The team also created the new UX/UI design for the already existing investment platform and suggested improvements to facilitate investing in real estate markets by deploying blockchain-based Real Estate Tokens (RETOs).
General info
- Technologies used: ReactJS, Google Apps Script, HTML5, CSS3, Redux, React Charts, Redux Thunk, Highcharts
- Domain: Blockchain, Token as a Service, Real Estate
- Team: 2 Senior front end engineers, 3 UX/UI designers, 1 Director of Production and 1 Project Owner
- Duration 2 months

Currency exchange platform
About the project
One of the leading UK currency exchange bureaus aiming to disrupt the FX online delivery service trusted us to build their online currency exchange platform for end-users, supporting online ordering for collection, currency delivery, and buyback services. The platform provides money transfers at the most competitive rates in the UK.
How we helped
Our services included business analysis, architecture, programming of the website, backend systems and mobile applications.
The project required full process automation and integration with external platforms, local laser printers, money counting machines, inventory tracking, Royal Mail order, etc.
General info
- Technology: PHP, C, Shell scripting, ExtJS, Linux, Web services, XML/XSLT, ZPL2, PhoneGap, OpenStack
- Domain: Financial Services
- Team: 5 people
- Duration: 8 years
Reviews
the project
Web Dev & Infrastructure Migration for E-Learning Site
"They're a true partner, not just a vendor."
the reviewer
the review
The client submitted this review online.
Please describe your company and your position there.
Jigsaw Interactive is a virtual learning and collaboration tool used by Corporations, Colleges, and K-12 schools of all types and sizes. I am the Chief Of Innovation which encapsulates both CIO and Software Development.
For what projects/services did your company hire Prime Holding JSC?
We originally took over this project from another team who had reached the limit of their technical expertise. The product was very unstable, not cloud-based, not scalable, no automated code delivery, running on fixed Microsoft servers and used Flash. We needed a team who was cloud-first who had experience creating web-based applications using streaming audio, video, voice, desktop-sharing using HTML5/WebRTC in a real-time multi-user collaborative environment. The infrastructure needed to be changed from server-based to Docker/Kubernetes. We also needed them to be fluent in database technologies and traditional web development as well. We also needed full Mobile capabilities.
What were your goals for this project?
Move from hardware/server-based to cloud-based technology stack. Move from Flash to HTML5/WebRTC using Node.js for the client application. Move from server-based to use Dockerized containers in a custom Kubernetes environment. Implement data warehousing and end-user dashboards. Make the stack scalable while also reducing environment costs. Have a long-term technology partner. Have a stable product/platform.
How did you select this vendor?
We tried many different vendors from several places prior to choosing Prime. They each had positive aspects, but none had the scope of talent, the technical approach, nor the characteristics of a long-term partner. Prime ticked all of our checkboxes and were very straightforward with high integrity throughout our process.
Describe the project and the services they provided in detail.
We have a team that we have broken down into functional areas: - Infrastructure (all cloud-based server management, Kubernetes/Docker environments, networking, load-balancing, edge-computing, CI/CD management, and security) - Conferencing (HTML5/WebRTC client components, Angular/Node.js coding, mobile implementation, and media server implementation) - Backend (.NET/C# coding, backend/admin client development, database management, e-mail management, and API/middleware) - QA (automated and manual product testing, ticket-testing, and load-testing) - PM (developer management, project planning, resource allocation, ticketing system management) - Design UI/UX (creating standards, design, UI creation, UX refactoring, proof-of-concepts)
What was the team composition?
The size of the team varies according to the type of work being done, the skillsets needed and the delivery schedules. We currently have around 30 members on the team. Some members of the team have been with us for the entire 10-years so far. We have team members with a wide variety of skillsets, including: Infrastructure, Networking, DevOps, Backend Development (C++, C#), Frontend Development (C++, Node.js), API/Middleware, Mobile, Database design, UI/UX, media servers, Quality Assurance, and Project Mangement.
Can you share any information that demonstrates the impact that this project has had on your business?
This project IS our business.
How was project management arranged and how effective was it?
We use a variety of PM tools including in-house staff management software Primer, Jira, Assembla, GitHub, Slack, and our own collaboration tool, Jigsaw Interactive. We have never experienced language barriers because everyone on the team is fluent in English. The 7-hour time difference is factored into our release schedules (usually the time difference works in favor of our timelines).
What did you find most impressive about this company?
The highest level of Integrity in every facet of business. They're a true partner, not just a vendor. A wide variety of skills and strengths. Essentially, we have never had a situation where our team could not do what was needed within the timeframe that was needed. They have pulled off minor and major miracles for us many times.
Are there any areas for improvement?
It would be in any Customer's best interest to treat Prime Holding as a partner with open and clear communication. Allow for a FULL team setup with Prime (including PM, QA, and Design UI/UX) to make the most out of the time difference. Most importantly, empower the team to make their own decisions. If you treat them as a simple vendor that just gets plugged into one small aspect of the project, you are missing out on your team's real potential. I also encourage an in-person visit to meet your team. I usually make bi-yearly visits where I get to be face-to-face with the team and this time is valuable for understanding personalities and getting the most out of our relationship.
the project
App Development for Strategic Design Company
"They are true artisans, keen to craft a great product, highly responsive, and very proactive."
the reviewer
the review
The client submitted this review online.
Please describe your company and your position there.
I am the CEO of a Strategic Design Company
For what projects/services did your company hire Prime Holding JSC?
Our client needed to create a proof of concept for their mobile banking application using cutting edge technologies. We engage Prime to explore with us a flutter proof of concept to demonstrate how flutter could support in delivering not only a beautiful interface but also enhance the customer experience.
What were your goals for this project?
Demonstrate that Flutter is a real alternative to the current FE technology
How did you select this vendor?
We were referred to Prime from a client of theirs in the UAE in 2019. We found them to be incredibly proactive and experienced in flutter.
Describe the project in detail.
We provided Prime with 20 screens (customer journey) for an existing customer, as well as animations. Over three weeks working in agile and using cloud-based tools we were able to deliver in a very tight timeline. We were also required to integrate the app into a newly deployed sandbox to show realtime (anonymized) client data.
What was the team composition?
We worked with the head of delivery and 3 flutter developers.
Can you share any outcomes from the project that demonstrate progress or success?
The client was super happy with the POC, from the CEO to direct the client. The app clearly demonstrated that flutter could indeed raise the bar for mobile banking and we are now exploring how to move forward with the entire mobile banking app.
How effective was the workflow between your team and theirs?
Jira formed the backbone of the workflow between ourselves and prime and was very effective.
What did you find most impressive about this company?
The guys are amazing. They are true artisans, keen to craft a great product, highly responsive, and very proactive.
Are there any areas for improvement?
None that are apparent.
the project
Performance Appraisal System for Power Platform
"I'm impressed at how they are result-oriented, and the experience and expertise of their team."
the reviewer
the review
The client submitted this review online.
Please describe your company and your position there.
ContourGlobal is a growth platform for acquiring and developing wholesale power generation with long-term contracts diversified across fuel types and geographies. It was founded in 2005 by CEO Joseph Brandt and Reservoir Capital Group. We have developed the highest of operating standards and practices which we ensure are applied globally in all of our projects. Today, we are uniquely positioned to capitalize on market opportunities that rely on operators with best-in-class track records with refurbishment and development expertise. I am Director Global Applications, responsible for all business applications except for SAP.
For what projects/services did your company hire Prime Holding JSC?
We wanted to automate and streamline the performance appraisal process that was at that time highly manual.
What were your goals for this project?
Automate and simplify the performance appraisal process with rich functionalities for employee, manager and HR.
How did you select this vendor?
We used the vendor for other projects and they were providing very good service.
Describe the project and the services they provided in detail.
Prime Holding delivered high quality reliable performance appraisal system that fully fits out needs and cover the full lifecycle of performance appraisal process, from self-assessment, through manager review to calibration and bonus and salary review. The system was delivered with high quality and on time.
What was the team composition?
We are currently using 4 full time developers for different projects. Performance Appraisal is led by one of them.
Can you share any information that demonstrates the impact that this project has had on your business?
Heavily simplified and automate the performance appraisal process, allowing for consistent, objective and transparent assessment of the employees performance.
How was project management arranged and how effective was it?
We work in a very agile mode. The project was highly effective as it brings a value to us for a very reasonable cost.
What did you find most impressive about this company?
I'm impressed at how they are result-oriented, and the experience and expertise of their team; agility
Are there any areas for improvement?
NA
Prime Holding JSC has managed to pull off many miracles for the client. The team performs with the highest level of integrity in every facet of business. They have great project management skills and use a variety of tools to keep everyone on track.