September 14, 2026 • Category: Top IoT Development Firms

Top 10+ IoT Development Companies in Bulgaria | IoT Developers Bulgaria 2026

The List of Top 10+ IoT Development Companies in Bulgaria | Top IoT Developers Bulgaria 2026

Researched by: App Development Companies Team Updated: September 14, 2026

This directory currently lists 26 Bulgaria IoT Development companies as of September 2026. Leading the pack right now is Hyperlink InfoSystem (5.0-star average from 71 verified reviews, $25 - $49 / hr, in business since 2011). Across the board, the midpoint hourly rate is $37, the median rating is 4.7, and 36% report a team of 50 or more. Most frequently listed specialties here include Mobile App Development, IoT Development, AI Development, and Web Development.

Every company on this page is evaluated on the same real signals: how clients have rated their work, what they charge per hour, how big their team is, and how long they've been in business. On average, clients give these bulgaria iot development firms a 4.7/5. $25 - $49 / hr is the most common rate band. About 31% report having 50 or more employees. Before you contact a shortlisted firm, take a look at its review history and past project portfolio - listings only go live after a manual check of founding year, services offered, and headcount, and reviews are moderated first.

26
Verified Firms
$25 - $49 / hr
Most Common Rate
4.7
Average Rating
84
Countries
31%
Have 50+ Employees
How this list is built: Companies are added only after manual research into their foundation year, service offerings, ratings, and employee strength. Client reviews go through a verification step before being marked Verified and shown publicly. Listings marked Sponsored pay for premium placement - sponsorship does not affect star ratings or review content.
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Top-Ranked Bulgaria IoT Development Companies

Compare the highest-ranked firms first side by side.

Rank Company Rating Reviews Hourly Rate Team Size Founded Headquarters Action
1 Hyperlink InfoSystem 5.0 71 $25 - $49 / hr 1,000 - 9,999 2011 Jersey City, NJ Visit
2 App Streams Ltd 4.8 8 $25 - $49 / hr 10 - 49 2018 Sofia, Bulgaria Visit
3 ThingsLog 4.8 8 Undisclosed 10 - 49 2013 Sofia, Bulgaria Visit
4 Web Motion 4.7 8 $25 - $49 / hr 10 - 49 2009 Sofia, Bulgaria Visit
5 Droxic 4.7 7 $50 - $99 / hr 50 - 249 2012 Sofia, Bulgaria Visit
6 Key Development 4.7 7 $25 - $49 / hr 10 - 49 2014 Sofia, Bulgaria Visit
7 Orion Technologies 4.7 7 Undisclosed 10 - 49 2020 Blagoevgrad, Bulgaria Visit
8 Dreamix 4.7 6 $25 - $49 / hr 250 - 999 2007 Sofia, Bulgaria Visit
9 Scavasoft 4.7 6 $25 - $49 / hr 10 - 49 2015 Varna, Bulgaria Visit
10 WEB iMPRESSION 4.7 6 $25 - $49 / hr 2 - 9 2013 Sliven, Bulgaria Visit

Software Product Group

No reviews yet
+359888739667
Visit Website Visit Profile

Software Product Group

No reviews yet
+359888739667

info@spg.solutions
$25 - $49 / hr
50 - 249
Founded 2017
Sofia, Bulgaria
mobile app development Mobile App Development web development Web Development iot development IoT Development digital strategy Digital Strategy research & investigation Research & Investigation
Businesses looking for a reliable technology partner often consider Software Product Group. Software Product Group focuses on Custom Software Development. Software Product Group employs 50 - 249 people. Projects are generally billed around $25 - $49 / hr/hr. Software Product Group operates out of Sofia, Bulgaria. Overall, Software Product Group is one of the options worth shortlisting for a technology project.
FAQ

Frequently Asked Questions

Got questions about our specialized technology solutions? We have the answers to help you make informed decisions.

Comparing IoT Development companies in Bulgaria effectively requires a structured scorecard covering technical expertise, relevant portfolio depth, delivery methodology, client satisfaction scores, and post-launch support quality. Request detailed proposals from each firm and evaluate how well they understand your challenge — not just how competitively they price it. Direct conversations with former clients of each IoT Development company in Bulgaria give you the most reliable signal of real-world performance.

Hiring a IoT Development company in Bulgaria gives you access to skilled engineering talent at competitive rates without sacrificing quality. Bulgaria-based firms understand both regional business norms and international delivery standards, making communication and project alignment significantly smoother. Working with a local IoT Development partner also simplifies legal agreements and allows for in-person reviews when the project demands it.

Yes, most IoT Development companies in Bulgaria offer fixed-price contracts for projects with clearly defined requirements, timelines, and deliverables. This structure protects your budget and links payment to specific milestones rather than open-ended hours. Ensure the contract with your IoT Development firm in Bulgaria includes a change request process so any scope adjustments are managed transparently without surprise cost overruns.

Verified listings for IoT Development companies in Bulgaria display a platform badge confirming the directory has validated the firm's identity, business registration, and at least a portion of its client references. Verification typically involves direct phone interviews with named clients and cross-referencing submitted portfolio work. Always choose verified IoT Development firms in Bulgaria over unverified listings to reduce the risk of engaging an unvetted vendor.

Reputable IoT Development companies in Bulgaria protect client IP through comprehensive NDAs, strict code access controls, and contract clauses that transfer full ownership of all deliverables to the client upon final payment. Team members sign internal confidentiality agreements and are granted access only to what they need for their specific role. Ask any IoT Development firm in Bulgaria to confirm IP assignment terms and their data security policy in writing before work begins.

IoT Development companies in Bulgaria typically recommend building with SEO-optimized architecture, fast page load performance, mobile-first design, and structured content from the ground up to maximize organic search visibility. Many firms advise on Core Web Vitals optimization, schema markup, and clean URL structures that improve how search engines index your product. A IoT Development company in Bulgaria that treats search performance as a core engineering concern — not an afterthought — delivers far better long-term results.

IoT Development companies in Bulgaria with a strong reputation for fast and reliable delivery use proven agile methodologies, experienced project managers, pre-built component libraries, and clear scope management processes. Ask shortlisted IoT Development firms in Bulgaria for their on-time delivery rate and how they maintain quality under timeline pressure. Consistent delivery records supported by client references separate genuinely reliable IoT Development companies in Bulgaria from those that only perform under ideal conditions.

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