Why TSD?
Because TSD is a reliable IT vendor building excellence and establishing trusted longstanding partnerships.
Our Global Reach
We have established successful partnerships with multiple clients across the globe.

Our Achievements
Top Staff Augmentation Company, Bulgaria 2024
We are pleased that Clutch has recognized our extensive experience in providing high-class IT staff augmentation services to an increasing number of global clients. The trusted B2B platform has ranked TSD among the top staff augmentation companies in Bulgaria for 2024.
Top Software Developers, Gambling, Bulgaria
The popular B2B platform Clutch recognizes TSD as one of the best custom software development companies in Bulgaria for casinos. This ranking is based on our vast expertise in servicing clients from the gambling and entertainment industry by providing expert offshore IT resources and building efficient software solutions.
Top Staff Augmentation Company 2023
The DesignRush agency acknowledged TSD as a Top Staff Augmentation Company for 2023. TSD is ranked among global companies that provide highly qualified and skilled IT talents responding to specific business objectives of their clients.
“Responsible Company – Responsible Employees” Honor Mark
TSD is awarded a “Responsible Company – Responsible Employees” Bronze Honor Mark for our 2024 workplace donation program and charitable initiatives. Granted by the BCause Foundation, this recognition is presented to companies that engage and inspire their team members to persistently contribute to social and charitable causes as part of their corporate social responsibility approach.
Socially Responsible Strategic Management 2022 Award
TSD is recognized with a Socially Responsible Strategic Management 2022 prize by the Bulgarian Ministry of Labor and Social Policy. The award was presented to us in acknowledgment of our continuous CSR efforts and our significant contribution to the local community as part of our corporate social responsibility approach.
50 Best IT Employers in Bulgaria
TSD is recognized as one of the 50 best IT employers in Bulgaria for 2021 according to the Career Show Index ranking. The index acknowledges the achievements of companies in the technology sector based on their performance in the most prestigious national business rankings for the past two years.
Top IT Services in Bulgaria
TSD is acknowledged as one of the leading IT services providers in Bulgaria by Clutch platform. We owe that recognition to our extensive industry expertise in delivering best-in-class and customer-focused IT services to our growing clients across the globe.
Top B2B Services in Bulgaria
TSD is recognized as one of the leading 2022 B2B services providers in Bulgaria by the Clutch platform. This acknowledgment is a result of our extensive experience, deep industry expertise, and excellent ability to deliver. It symbolizes the drive and dedication we have for our clients.
TOP ICT Employer 2016
TSD is awarded two prizes in the annual TOP ICT Employer in Bulgaria contest organized by ICT Media and JobTiger. The company is recognized as the TOP ICT Employer in Bulgaria for 2016, also winning Gold award in the IT Outsourcing Services category.
ISO 27001 International Standard for Information Security
As part of our policy for continuous information security improvement, TSD has obtained an ISO/IEC 27001 certificate in 2012. The adopted Information Security Management System demonstrates thorough compliance with regulatory and contractual requirements regarding data security, privacy, and IT governance.
Career Show Awards 2023
TSD is a winner in the New Product Creation category of Career Show Awards 2023. Our Hydrogen HR application was recognized with a bronze prize in the leading Bulgarian employer awards.
Most Reviewed Staff Augmentation Companies in Bulgaria
The Manifest has listed TSD among the top staff augmentation services companies in Bulgaria for 2024. This recognition highlights TSD's commitment to delivering quality talent solutions and fostering strong partnerships with clients across various industries.
What Our Clients Say About Us
They are very good at quickly understanding the needs of the users and translating that into working products.
Very short timelines on providing the best fit for our needs and the TSD employee that works at Fourth in the past several months is performing in an outstanding manner. Really happy that we established this type of collaboration relationship which I do believe will be very beneficial for Fourth and TSD Services
TSD has been instrumental in assisting us with being able to quantify our data in our instance of Relativity. They are proficient, attentive, and have assisted us with solving several of our pain points at the firm. We continue to rely on their services and expertise, which contribute to our continued success.
We needed a good, easy to use solution to help with generating bills out of our on premise Relativity application. TSD provided us with a great tool that cut down the amount of time it took to create the invoices. The invoices are accurate and we have been able to increase our ROI for our Relativity application.
Through the MaxBilling customization, we were able to automate the workflow, mitigate errors, and provide a quality product to our client.
Ubiqus Labs partnered with TSD Services to develop our app for Relativity and we couldn’t be happier. TSD team members are very professional, customer-centric, and friendly. They managed our project with care, very good communication, and expertise.
LionBridge has a great business relationship with TSD. You are reliable, flexible and valued partner. Our work on LionBridge Connector is great and exceptional.
TSD employees were a pleasure to work with and understood our needs. They were always professional, willing to make changes, and provided their expertise to improve our product. Work was always completed in a timely fashion and we are very excited with the final product.
TSD is very service oriented, committed to customer satisfaction, and works hard to build a great relationship with their customers and partners. I love working with everyone at TSD.
I am extremely pleased with the developers from TSD since they started with us about 3 years ago. From taking initiative and being self-motivated, to taking ownership of the task and seeing it thru to completion, to excellent communication and collaboration with each other and with our team members. They have a great attitude, a great work ethic, are very skilled, and can be relied upon to complete tasks on time and autonomously, and to deliver quality code and artifacts. They are an asset to the team and set a fine example for others.
The team is incredibly friendly and responsive. Great communication skills, great work product. I never had to ask for anything twice-they always delivered. They also work around my schedule, despite the time difference.
A Diversity of Highly Engaged IT Talents

Except for solid technical background and adept skills, our IT experts are distinguished by their strong self-initiative and problem-solving abilities, through which they have proven to deliver added value to our partners’ organizations. We provide a range of technical positions efficiently covering each stage of the software development lifecycle and more.