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Embedded Systems Testing Services

Cloud-based HIL/SIL testing for embedded devices. Validate firmware, connectivity protocols, and app integration on real hardware – managed remotely by our team.

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22+

years in software testing

3000+

successful projects completed

500+

real testing devices

250+

QA engineers
(Junior, Middle, Senior)

Our Testing Solutions for Embedded Devices

To ensure your microcontrollers reach the market in top quality, we perform the following types of testing:

Functional testing

  • Validation of device hardware components (e.g., sensors, actuators) for correct operation in response to inputs.
  • Testing embedded logic behaviors (e.g., state transitions, event handling) under normal and boundary conditions.

Performance testing

  • Measurement of firmware execution times for critical operations (e.g., sensor polling, command processing).
  • End-to-end latency benchmarks between device, app, and cloud under varying network conditions.

Integration & regression testing

  • Verification of seamless data flow and interactions between device, mobile app, and сloud Integration.
  • Regression checks for existing functionalities after updates to any component (firmware, app, or backend).

Security & data integrity testing

  • Validation of API authentication, authorization, and encryption for secure data exchange.
  • Testing network connections for integrity (e.g., TLS validation, tamper detection in transit data).

Connectivity testing

  • Testing connection stability and handover between Bluetooth and Wi-Fi protocols.
  • Validation of signal strength, range, and interference scenarios for reliable connectivity.

Firmware integrity validation

  • Automated checks for firmware checksums and hashes pre- and post-OTA to detect corruption.
  • Verification of signature validation during update installation.

Protocol testing

  • Verification of message publishing/subscribing and error handling in MQTT and CoAP protocols.
  • Сomprehensive LoRa/LoRaWAN testing
  • Testing request-response cycles, persistence, and real-time updates in REST and WebSocket communications.

UX / usability testing

  • Evaluation of user flows for onboarding (e.g., device setup, app pairing) for intuitiveness and error handling.
  • Usability checks for in-app interactions, notifications, and recovery from common user errors.

Automation of physical interactions

  • Automated scripts for Bluetooth pairing sequences, including discovery, bonding, and error recovery.
  • End-to-end automation of OTA update processes, from initiation to verification of successful firmware deployment.

End-to-End IoT validation

  • Comprehensive scenarios tracing data from firmware sensors through app processing to cloud storage and analytics.
  • Validation of full system synchronization and consistency across all layers.

Reliability & stress testing

  • Simulation of repeated power cycles to ensure device recovery and state preservation.
  • Stress scenarios for network reconnects and OTA updates during high-load conditions (e.g., concurrent data streaming).

Consumer IoT validation

  • Testing device pairing and reconnection in real-world consumer scenarios (e.g., multi-device environments).
  • Regression and manual exploratory checks for everyday use cases like app backgrounding or network switches.

Why Choose QATestLab

The main challenges that arise while preparing your IoT solution for real-life applications

Cloud-Based HIL/SIL Lab

We handle the complete HIL/SIL testing cycle: from deploying a cloud-based environment and designing scenarios to executing tests and analyzing the results. In the end, you receive a fully validated product with complete supporting documentation, without investing in your own testing lab or shipping any hardware.

Effortless Scaling with Remote Testing Team

Our experts design a flexible testing ecosystem tailored to your product that is ready to scale from the very first Proof of Concept. This enables faster setup and effortless expansion across real devices, environments, and expert engineering support as your project grows. 

Real-World Validation Across All Environments

You get testing in controlled radio environments with simulated network instability and interactions across a wide range of real mobile devices. This ensures your product performs reliably under real-world conditions and delivers a flawless user experience.

63% Scalable Infrastructure from PoC

You get a testing environment that’s 63% ready to scale from the first Proof of Concept, enabling faster setup and effortless expansion as your project grows.

Full Transparency with Clear Reporting

You get complete visibility into every test with clear documentation and structured testing deliverables. This transparency lets you track progress, validate results, and make data-driven decisions with confidence.

Early Defect Detection for Reduced Redesign Costs

You get early-stage device firmware QA across critical layers – from firmware logic to cloud interactions – allowing you to catch defects before release and avoid costly redesigns and delays.      

Our Process

Our process is built for clarity, speed, and scalability — from the Discovery Phase to full-cycle QA execution.

01

Request Evaluation / PoC (Free Discovery Phase)

We start with a free assessment to clarify your QA requirements and to define testing scope, goals, and infrastructure needs.

02

NDA Signing

We ensure the confidentiality of your project data.

03

Access & Details

You provide technical access, documentation, and device details.

04

Initial Setup

We configure or assemble a tailored test bench for your hardware and environment.

05

Test Planning

Together, we align testing criteria, priorities, and success metrics.

06

QA Automation & Execution

Our engineers run manual and automated tests to validate the product’s functional, integration, and performance aspects.

07

Reporting & Insights

You receive transparent reports with detected issues, recommendations, and improvement cases.

08

Scaling Up

As your product grows, testing expands seamlessly, enabled by us acting as your Remote Test Hub and managed infrastructure.

All-Round Embedded System Testing

All-Round Embedded System Testing

gear functional features

Functional Features

We verify firmware stability, compatibility, and logic accuracy, identifying potential errors through data-driven validation and scenario-based testing.

gear environment

Environment

We evaluate your system behavior in controlled and simulated environments using prototypes, hardware emulation, and custom test setups to replicate real device interactions before production.

gear non functional features

Non-Functional Features

We test how your embedded system performs under real constraints — time limits, energy consumption, data throughput, and resource availability — ensuring reliable operation even in demanding conditions.

get discovery phase

Get Your Free Discovery Phase

We provide a Free Discovery Phase – a service that turns your undefined QA needs into a clear, structured QA request with practical recommendations to guide your next steps toward sustainable product growth.

Technology & Tools

Automation: Python, Bash, CI/CD (Jenkins, GitHub Actions)

HIL/SIL frameworks

Protocols: BLE, MQTT, LoRa, CoAP, Zigbee

Cloud: AWS, Azure, GCP integration

Device pool: real devices on different OS

Data analysis: Grafana, custom dashboards

Test benches: custom, based on Arduino/ESP32, Raspberry Pi, commercial standards

Cases

Discover how we apply proven QA methodologies and comprehensive validation to help companies ensure the stability and quality of their embedded systems.

case thermostat system

Testing a Smart Thermostat System

To help a smart thermostat system remain reliable in real-world conditions, QATestLab validated app-to-device connectivity, pairing stability, and data synchronization across devices, OS versions, and unstable networks.

Read more

case advanced door security

Quality Testing for Advanced Door Security System

To ensure a security platform delivers reliable control over doors and access hardware, QATestLab built QA processes from scratch and validated seamless software–hardware interaction across multiple environments.

Read more

case smart bird house

Testing a Smart Birdhouse System

To help a smart birdhouse solution deliver consistent performance, QATestLab tested the connected device and mobile app through functional, end-to-end, and regression testing, validating stable device–app interaction and a user-friendly experience before release.

Read more

Ensure your IoT and embedded hardware perform reliably under real operating conditions.

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FAQ about Embedded Testing

How can a remote team test embedded systems?
What types of devices and technologies do you support?
What is HIL/SIL as-a-Service?
How much does it cost to start? Do you offer a pilot?
How involved does my team need to be?
How do you ensure data security?
How do you ensure intellectual property protection?