Top 11 IoT Solutions Development Providers in Bulgaria (2026)

Buyers that need production-ready IoT systems often struggle to integrate sensors, firmware, connectivity, cloud services, and enterprise backends while meeting EU security and compliance timelines. Compare providers on hardware and firmware integration, connectivity and network management, cloud and edge architecture, security and OTA update processes, data analytics and post-launch maintenance; SoftPro appears first as the featured partner for this roundup and serves buyers across the region as an international partner.

Quick comparison of Bulgarian IoT providers

1. SoftPro

We feature SoftPro as the author-selected international partner for our Top 11 IoT Solutions Development Providers in Bulgaria list. It is a fit for startups, small and medium enterprises, and corporate teams that need external engineering support to connect device telemetry with cloud platforms and analytics, and the company states it serves clients across the European Union including Bulgaria.

SoftPro's website does not list dedicated IoT case studies, but it documents adjacent technical capabilities that support IoT projects, including Microsoft Azure and AWS cloud development, ASP.NET Core and C# back ends, React and Node.js front ends, progressive web applications, containerization and cloud migrations, plus AI work using LLMs and RAG architectures.

Key Highlights

• More than 20 years of combined team experience and a Warsaw-based EU team.

• Case studies listed on the site include a Business Portal, a CRM/HRM system, a SaaS ETL platform, a Support System and a social network for product promotion.

• The company explicitly offers continuous long-term support and maintenance for delivered software.

• Multilingual website with English, German, Finnish and many other language versions.

Services

• Custom software development

• Web application development

• Cloud development

• Artificial intelligence

Contact Information

Website: soft-pro.pl

Phone: +48 571 282 759

Address: Poland, Warsaw, Mazowieckie Voivodeship, 13 Erasmus Ciołka St. 401

LinkedIn: www.linkedin.com/company/soft-pro-pl

2. Olimex

Olimex is a Bulgarian open-hardware company based in Plovdiv that sells development boards, IoT modules, and small Linux single-board computers. Their product catalog includes ESP32 and ESP8266 boards plus LoRa, NB‑IoT and LTE modules and several ESP32 gateway and Power-over-Ethernet development boards.

Buyers evaluating Olimex for IoT projects should review individual product pages and datasheets to compare module variants, memory and connectivity options, and firmware availability. Also examine their open-source hardware documentation and the MicroPython product category to confirm firmware support and development-tool compatibility.

Key Highlights

• 30+ years of experience in designing, prototyping and manufacturing printed circuit boards and complete electronic products.
• Recognized as a Third Party Hardware Developer by Espressif, Allwinner, NXP, ST Microelectronics, Texas Instruments and Microchip.
• Operates 5,000 sq.m of production buildings on a 10,000 sq.m company property.
• Reports more than 50,000 active customer accounts.

Services

• System-on-Module (SOM) products
• Development tools and programmers
• MicroPython-ready IoT boards

Contact Information

Website: www.olimex.com

Address: 2 Pravda St., Plovdiv 4000, BULGARIA

Email: info@olimex.com

Support: support@olimex.com

Phone: +359-32-626259, +359-32-267407, +359-32-621270

3. A1 Bulgaria

A1 Bulgaria is the national telecommunications operator that explicitly lists IoT, M2M and cloud services in its corporate portfolio and publishes NB‑IoT and mobile coverage information on its site. The company presents IoT deployments on the site for water‑consumption monitoring, smart waste collection, smart lighting, smart parking and air‑quality monitoring as part of its solutions mix.

Buyers evaluating A1 for IoT projects can use the website’s NB‑IoT and 5G coverage map, review its A1 Data Pool offering for mobile data tariffing, and validate infrastructure claims such as the two owned data centers and the company’s online platform for digital solutions to confirm integration and data routing requirements.

Key Highlights

• A1 says it was the first telecom in Bulgaria to offer commercial Narrowband‑IoT (NB‑IoT) services.
• The public coverage map on the site shows NB‑IoT among listed technologies and is dated 01 October 2026.
• The corporate pages describe an "A1 Data Pool" service for tariffing and managing IoT/M2M data transport over the mobile network.
• A1’s air‑quality monitoring solution on the site reports sensors that track NO2, CO, SO2, O3 and fine particulate matter (PM).

Services

• NB‑IoT connectivity
• M2M / IoT data transmission
• A1 Data Pool (mobile data tariffing)
• Smart‑city IoT solutions

Contact Information

Website: www.a1.bg

Phone: *88 or +359 88123

4. MClimate

MClimate builds LoRaWAN-based hardware and a companion cloud platform to make existing buildings smart and energy-aware. The company’s official product pages list devices including the Vicki LoRaWAN smart radiator thermostat, Flood Sensor LoRaWAN, CO2 and HT sensors, and a 16A switch & power meter, alongside the MClimate Enterprise buildings management platform.

Buyers evaluating IoT solutions for smart buildings should review MClimate’s on-site success stories for heating optimisation in the UK, CO2 monitoring in Denmark, and office energy management in Germany and confirm the vendor’s performance claims; the site cites 15–35% monthly energy savings from deploying their IoT solutions. Decision-makers should also check product compatibility with existing BMS deployments by reviewing the Enterprise platform details and the listed LoRaWAN integration resources on the vendor site.

Key Highlights

• Based in Sofia, Bulgaria: Sofia Tech Park, Labs Building, 111J Tsarigradsko Shose.
• Maintains an open protocol and advertises no vendor lock-in for its LoRaWAN devices.
• Starter Pack integrates AI and BMS capabilities in collaboration with Siemens, viboo and m2m Germany.
• Publishes developer and integration tools on-site, including a LoRaWAN Payload Helper, a LoRaWAN Battery calculator, and API documentation.

Services

• Climate & Energy Control
• Smart Sensing & Automation
• Water Control
• MClimate Enterprise

Contact Information

Website: mclimate.eu

Address: Sofia Tech Park, Labs Building, 111J Tsarigradsko Shose, Sofia, Bulgaria

5. ThingsLog (iTransformers Labs / ThingsLog)

ThingsLog builds remote IoT monitoring and automation systems that combine environment sensors, configurable low‑power data loggers, and a cloud platform with a companion mobile app. The vendor publishes a public product catalogue and industry apps to support utility and enterprise deployments.

Buyers evaluating ThingsLog for IoT development should download the product catalogue and technical datasheets to verify hardware interfaces and power options. Procurement teams should also review the site’s case studies and the platform’s API and integration tools to confirm integration and deployment timelines.

Key Highlights

• Product catalogue lists specific hardware models LPMDL-1104, LPMDL-1106, LPMDL-1105 and controller TLCTL-1104.
• Connectivity support includes LoRa, NB‑IoT, LTE‑M (Cat‑M1), 4G, Wi‑Fi, and Ethernet.
• Integration protocols documented include pulse outputs, Modbus, M‑Bus, and standard APIs for external systems.
• Site case study shows BILLA Bulgaria reduced water consumption by 15% (published July 5, 2026).

Services

• Energy consumption monitoring
• Smart water metering
• Leak detection and control
• Smart agriculture monitoring

Contact Information

Website: thingslog.com

Phone (EU): (+359) 875 32 80 70

Phone (US): +1 312 809 8883

Email (Sales): sales@thingslog.com

Email (Support): support@thingslog.com

6. Musala Soft (Avenga / Musala)

The Musala Soft URL redirects to Avenga, and Avenga’s corporate site presents end-to-end IoT and embedded engineering capabilities aimed at industrial and telecommunications use cases. The site explicitly documents IoT integration, firmware and embedded development activities and shows multiple Bulgarian delivery locations across Sofia, Burgas, Plovdiv, Ruse, and Varna.

Buyers assessing Musala Soft for IoT development should review Avenga’s IoT Integration and Manufacturing pages to confirm relevant capabilities. Those pages describe automated device onboarding, cloud-native and edge architectures, 5G-enabled connectivity and IIoT elements such as embedded controllers and MES extensions, and the site includes client examples and corporate scale indicators buyers can use to verify delivery capacity.

Key Highlights

• Avenga’s Manufacturing page states teams engineer embedded controllers, IoT devices, MES extensions, and cloud applications for real production floors.
• The IoT Integration page lists firmware development, IoT middleware, and named clients including Vodafone Czech Republic, Deutsche Telekom, MagentaZuhause, and a US-based satellite operator.
• The IoT Integration content details device onboarding automation, 5G and network-slicing support, edge computing, and AI/analytics for IoT monetization and scaling.
• Avenga’s corporate pages list a global footprint with 6,000+ tech professionals and 16 delivery locations worldwide.

Services

• Product Engineering
• Embedded Teams
• Platform Engineering
• Application Modernization

Contact Information

Website: www.musala.com

Address: 36 Dragan Tsankov Blvd., World Trade Center, 1057 Sofia, Bulgaria

Address: 2 Serdika St., 8000 Burgas, Bulgaria

Address: 19–21 Raiko Daskalov St., Plovdiv, Bulgaria

Address: 1–3/B Aleksandrovska St., 7000 Ruse, Bulgaria

Address: 42 Otets Paisiy St., Varna, Bulgaria

7. Findy IoT Solutions

Findy IoT Solutions is an industrial IoT hardware manufacturer based in Sofia, Bulgaria. Its site lists device families and connectivity standards including NB‑IoT, LTE Cat M1, 2G, GPS trackers, Bluetooth Low Energy hardware, low‑power loggers, and weather stations, and notes a water meter service point product with more than 20,000 units in service.

Buyers evaluating Findy for IoT solutions development should review the company’s product pages and case studies for device specifications and deployment evidence. The site shows an enterprise IoT section with Product Design, Rapid Prototyping, Technologies, Software, Sensors, Power, Feasibility Studies, Consulting, and Training, and it includes product pages with pricing and a direct “Buy now” option for hardware.

Key Highlights

• Online product catalog with visible pricing and a "Buy now" option for hardware.
• Weather Station Lite advertises up to 5 years battery life on the product page.
• Public partner logos include Telenor, Yettel, VW Group, and Sofia Technical University.
• The site links to an IoT platform at iot.higps.org for cloud connectivity and device management.

Services

• Product Design
• Rapid Prototyping
• Feasibility Studies
• Consulting

Contact Information

Website: findyiot.com

Phone: +359 2 818 09 53

Phone: +359 882 067 198

Email: info@findyiot.com

Address: Sofia, 1618, 10 Maystor Aleksi Rilets Str., Bulgaria

8. ONDO Smart Farming Solutions

ONDO builds automation solutions that control irrigation, precise fertigation, and climate management for open fields and greenhouses. Its product set includes ONDO Pro, ONDO Go, the extensible weather station ONDO Sense, and the My ONDO cloud application used by all ONDO automation products.

Buyers can evaluate ONDO for IoT by inspecting on-site components and published deployments, including AIR Point wireless modules and ONDO Sense real-time climate and soil telemetry, as well as case studies titled “Di Vi” (hydroponic strawberry near Popovo) and a 100+ ha orchard deployment near Balgarevo. The website also documents an initial audit, on-site installation, and hands-on post-installation training that buyers can confirm when planning a pilot.

Key Highlights

• ONDO reports up to a 30% increase in farmer profit margin based on customer reports.
• The company uses a subscription-only pricing model with a monthly fee plus the system installation cost and no upfront payment.
• The website features a partner program and a "Find a Partner" option to connect buyers with local representatives.
• ONDO advertises remote control and monitoring 24/7 from any mobile device.

Services

• Irrigation automation
• Precision fertigation
• Climate control automation
• Farm telemetry and sensors

Contact Information

Website: ondo.io

Phone: (+359) 888-860-820

9. Pollenity (Bee Smart Technologies)

Pollenity (formerly Bee Smart Technologies) builds IoT hardware and remote-monitoring systems that combine in-hive sensor stations and scales to report hive temperature, humidity, weight and swarm indicators for beekeeping. The company frames bees as environmental sensors and presents smart-hive products and dashboards on its public site.

The site presents an Adopt-a-Hive e-commerce and subscription model alongside its smart-hive narrative, but it does not publish full hardware datasheets or an engineering stack for buyers to inspect on the site. Buyers evaluating Pollenity for IoT deployments should request sensor specifications, connectivity and power datasheets and review the Adopt-a-Hive subscription terms directly.

Key Highlights

• Founded in 2015; the site states Pollenity was officially established in 2015.
• Operates an Adopt-a-Hive program and online shop that sells subscription plans and BIO-certified honey jars with listed prices.
• Publishes an ESG page that says it adheres to CSRD, TNFD and ESRS reporting standards and issues ESG certificates for corporate hive adopters.
• States it serves over 250 corporate clients through its corporate adoption and ESG services.

Services

• Remote hive monitoring
• Adopt-a-Hive subscriptions
• Honey e-commerce
• ESG reporting support

Contact Information

Website: pollenity.com

Phone: (+359) 885 83 06 43

Email: info@pollenity.com

Address: Sofia, zh.k. Banishora, Gen. Ivan Chernaev 2

LinkedIn: linkedin.com/company/pollenity

10. Sysgrok

Sysgrok develops embedded firmware in Rust for microcontrollers and wireless IoT devices. The site lists expertise with Espressif SoCs, including ESP32, ESP32-C3, and ESP32-S3, and references Matter protocol support for connected-home interoperability.

Buyers evaluating Sysgrok for IoT firmware projects should probe Rust MCU experience by requesting technical references and code samples that show deployments on ESP32-class hardware. The company advertises system integration services for the Bulgaria and Greece markets, which procurement teams can verify by asking for integration scopes and client references.

Key Highlights

• Company established June 2025.
• Became an Adopter Member of the Connectivity Standards Alliance in August 2025.
• Founded and led by Ivan Markov.
• Privately owned Ltd company serving international clients.

Services

• Rust MCU Development
• ESP32 Specialization
• Matter Protocol
• System Integration

Contact Information

Website: sysgrok.bg

Email: info@sysgrok.com

11. BULPROS

BULPROS is a Bulgaria-headquartered digital-transformation and IT services company with a public profile that lists cloud, big data and IoT among its focus areas. During research the company website could not be fetched to confirm on-site IoT case studies or dedicated IoT product pages, so IoT-specific project details were not verifiable on the official site.

For IoT procurement, buyers should evaluate BULPROS by reviewing its documented cloud, analytics and systems-integration capabilities and by requesting explicit device-to-cloud evidence. Ask for references or deliverables that show edge compute or device management, telemetry pipelines, connectivity protocols and OTA firmware or lifecycle management rather than relying on general digital-transformation statements.

Key Highlights

• Headquartered in Sofia, Bulgaria with an international office footprint reported across Europe and North America.
• Public company profiles cite recognition in Deloitte’s Technology Fast 50 in Central Europe and presence on growth lists like Inc. 5000 Europe.
• The corporate portfolio referenced in public listings includes two named products: the HR SaaS Staffico and the real-time communications suite Jabborate.
• Reported partner and vendor relationships in public materials include major vendors such as Microsoft, Cisco, SAP and VMware.

Services

• Industry digitalization
• Cloud & data engineering
• Application modernization
• Systems integration

Contact Information

Website: www.bulpros.com

Conclusion

We feature SoftPro as the author-selected international partner listed first; it is described as a fit for startups, small and medium enterprises, and corporate teams and is presented to serve the Bulgarian market with cross-border delivery. This list gathers diverse local makers, telco offerings, system integrators and device specialists so buyers can compare by role rather than rank.

When choosing a provider, prioritise technical depth that matches your primary challenge, whether that is embedded firmware, low‑power radios, cloud integrations, or field automation. Match the delivery model to your organisation by deciding between product vendors, managed platform partners, and engineering-for-hire, and confirm long‑term maintenance, update procedures, and SLA expectations. Validate collaboration fit through a short discovery or pilot that tests data ownership, security approach, manufacturing and supply‑chain readiness, and on‑the‑ground support before scaling.

Frequently asked questions

How much does an IoT solution typically cost when developed by a Bulgarian provider?

Costs vary widely based on device complexity, connectivity, data volumes, integrations, and regulatory needs. Small pilots have substantially lower budgets than enterprise-grade deployments that include hardware, cloud platforms, and long-term support. Request detailed proposals from shortlisted vendors such as SoftPro, Musala Soft, or BULPROS to compare scope and total cost of ownership.

Should I choose a hardware-focused company like Olimex or a software integrator like Musala Soft for my IoT project?

Choose a hardware-focused vendor when you need custom boards, firmware, or manufacturing support, and pick a software integrator when the primary work is cloud platforms, analytics, and systems integration. Many projects require both skill sets, so evaluate whether a single provider covers the full stack or if you need a partnership between hardware and software specialists. Verify previous projects and integration experience before committing.

Which Bulgarian providers are best suited for agriculture and smart farming solutions?

Vendors with explicit agri-focused offerings such as ONDO Smart Farming Solutions and Pollenity (Bee Smart Technologies) typically bring domain know-how for sensors and field workflows. Generalist integrators can still deliver agricultural projects if they demonstrate relevant pilot deployments and sensor-to-cloud expertise. Prioritize providers that can support field connectivity, durability testing, and data analytics for farm operations.

What is the typical development process and timeline for a pilot IoT deployment with a Bulgarian vendor?

Most vendors follow discovery, prototyping, pilot, and scaled rollout phases with defined milestones and acceptance criteria. A simple pilot can often be completed in a few months, while pilots requiring custom hardware, regulatory approvals, or complex integrations will take longer. Ask for a phased delivery plan, sample deliverables, and a timeline tied to procurement and certification steps.

What are the main risks of outsourcing IoT development to Bulgarian providers and how do I mitigate them?

Key risks include ambiguous requirements, security and privacy gaps, integration failures, and vendor lock-in. Mitigate these risks by defining clear success criteria, conducting security reviews, running staged pilots, and including exit or IP clauses in contracts. Favor providers with enterprise experience and verifiable references, such as SoftPro, Musala Soft, or BULPROS, when your project requires stronger governance and compliance.