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IoT Software That Connects Devices to Decisions

Firmware, connectivity, cloud and apps for connected products, factory equipment and fleets, built so data arrives reliably and teams can act on it.

From Sensor Reading to Useful Action

IoT development covers everything between a physical device and the person who needs its data: embedded firmware, wireless connectivity, a cloud platform that ingests and stores readings, rules that trigger alerts, and the web or mobile apps people use every day. Each layer has its own constraints, from battery life and patchy networks on the device to throughput and storage costs in the cloud.

We work with hardware startups launching a connected product, manufacturers adding condition monitoring to machines, logistics firms tracking cold chain and fleets, agritech teams running soil and weather sensors, and facility managers automating buildings. Most arrive with a working prototype or devices already installed, and need the software around them to become dependable enough for paying customers.

Nexzem designs IoT systems end to end. We write or extend firmware for ESP32, STM32 and Raspberry Pi class hardware, connect devices over MQTT, LoRaWAN, BLE or cellular, and build cloud back ends on AWS IoT Core, Azure IoT Hub or self-hosted stacks. Security is designed in from the start: unique device certificates, encrypted transport and signed over-the-air updates.

Send a reading through the mesh

Tap a sensor to send its reading through the gateway to the cloud and the dashboard. Take the gateway offline to see readings buffered at the edge and delivered when it returns.

Our IoT Development services

Connected device firmware, cloud platforms and dashboards that turn sensor data into timely action.

  1. 01

    Embedded Firmware Development

    Firmware in C, C++ or MicroPython for ESP32, STM32, Nordic and Raspberry Pi hardware, with power management and watchdog recovery built in.

  2. 02

    Connectivity and Protocols

    MQTT, CoAP, BLE, Wi-Fi, LoRaWAN, NB-IoT and Modbus integrations chosen for the range, power budget and data volume of each deployment.

  3. 03

    IoT Cloud Platforms

    Device registries, message brokers, time-series storage and rules engines on AWS IoT Core, Azure IoT Hub or open-source stacks you host.

  4. 04

    Dashboards and Companion Apps

    Web dashboards and mobile apps for live readings, device control, alert history and reports, with role-based access for customers and staff.

  5. 05

    Industrial IoT Monitoring

    Machine condition monitoring, energy metering and OEE tracking that pull data from PLCs and sensors into one plant-wide view for supervisors.

  6. 06

    Over-the-Air Updates

    Signed, staged firmware rollouts with automatic rollback, so you can fix bugs and add features on devices already installed in the field.

  7. 07

    Edge Computing and Analytics

    Local processing on gateways to filter, aggregate or run ML models on data before upload, cutting bandwidth costs and response time.

  8. 08

    Device Security

    Unique device identities, X.509 certificates, encrypted storage, secure boot and network hardening aligned with widely used IoT security baselines.

How IoT Development engagements run

Clear stages with a review at the end of each, so you always know what happens next and what it costs.

  1. BLOCK 01

    Use Case and Hardware Review

    We study your devices, sensors, site conditions and users, then define what data matters and how quickly it must arrive.

  2. BLOCK 02

    Architecture and Connectivity Plan

    We choose protocols, gateways, cloud services and data models, balancing power, coverage, latency and running cost.

  3. BLOCK 03

    Pilot Build

    Firmware, cloud ingestion and a first dashboard are built for a small batch of devices so the whole chain can be tested early.

  4. BLOCK 04

    Field Trial

    Devices run in real conditions while we tune connectivity, battery life, alert thresholds and dashboard usability with your team.

  5. BLOCK 05

    Scale-Up and Support

    We harden provisioning, OTA and monitoring for full rollout, then support the fleet under a monthly plan.

IoT Development with Nexzem: what you get

  • One Team From Chip to Cloud

    Firmware, cloud and app developers work together, so problems at the boundaries get fixed instead of passed between vendors.

  • Reliable in the Field

    Offline buffering, retries and watchdogs keep data flowing when networks drop, so gaps do not ruin reports or alerts.

  • Secure by Default

    Per-device credentials and encrypted links mean one compromised unit cannot open the door to your whole fleet.

  • Cloud Costs That Scale Sensibly

    Message batching, edge filtering and tiered storage keep cloud bills predictable as your device count grows.

  • Fixable After Shipping

    Over-the-air updates let you patch security issues and add features without recalling hardware or sending technicians.

Where IoT Development fits

  • Mission 01

    Cold chain monitoring for pharmaceuticals

    A pharmaceutical distributor monitors temperature in warehouses and refrigerated vehicles in real time, with alerts for excursions, automatic records for audits and reports that prove products stayed within required ranges throughout transport.

  • Mission 02

    Energy monitoring in a factory

    Smart meters on major machines and production lines show energy use by shift and product, revealing idle consumption and peak load patterns that help a manufacturer reduce electricity costs without affecting output.

  • Mission 03

    Asset tracking for equipment rental

    A rental company tracks the location, usage hours and condition of construction equipment with cellular trackers, improving utilization, preventing theft and billing customers accurately based on actual recorded equipment usage.

  • Mission 04

    Soil and irrigation sensors for farms

    Soil moisture and weather sensors connected through long-range wireless networks help farmers schedule irrigation precisely, reducing water use and improving yields, with recommendations delivered through a simple mobile app in local languages.

  • Mission 05

    Predictive maintenance for pumps

    Vibration and temperature sensors on industrial pumps feed models that detect early signs of bearing wear, creating maintenance tickets before failures occur and reducing unplanned downtime at water treatment facilities.

IoT Development, in depth

§01SPEC · CHOOSING-CONNECTIVITY-FOR-IOT-DEVICES

Choosing connectivity for IoT devices

Connectivity shapes battery life, range, cost and reliability for every Internet of Things project. Wi-Fi offers high bandwidth where networks exist but consumes more power. Bluetooth Low Energy suits short-range devices that connect through phones or gateways, such as wearables and sensors in a single room.

Low-power wide-area networks such as LoRaWAN cover large areas with very low power use, suiting agriculture, utilities and campuses where devices send small readings infrequently. Cellular options like NB-IoT and LTE-M provide wide coverage through mobile networks, useful for assets spread across cities or regions.

Industrial environments often add wired protocols such as Modbus or OPC UA, connecting machines and controllers to gateways that translate data for cloud platforms. Many projects combine several technologies depending on device location and data needs. Test connectivity in real locations early. Metal structures, underground spaces and rural areas can disrupt signals in ways that office testing never reveals, and discovering this after manufacturing devices is costly.

§02SPEC · DESIGNING-DEVICES-THAT-SURVIVE-THE-FIELD

Designing devices that survive the field

Devices that work perfectly in the lab often struggle in the field. Power fluctuations, extreme temperatures, dust, moisture, vibration and intermittent connectivity all affect reliability. Designing for these conditions from the start avoids expensive site visits and replacements later, and the practices below make the biggest difference.

Over-the-air updates are essential for fixing bugs and security issues across deployed devices without physical visits. Updates must be signed, tested and recoverable, so a failed update never leaves a device unusable. Local buffering prevents data loss when connections drop. Devices store readings and send them when connectivity returns, with timestamps preserving the correct sequence for analysis. Remote diagnostics, such as battery levels, signal strength and error logs, help support teams identify failing devices before customers notice problems.

  • Hardware and enclosures rated for the environment.
  • Power budgets planned for expected battery life.
  • Local storage for readings during outages.
  • Secure, recoverable over-the-air firmware updates.
  • Remote health monitoring and diagnostics.

§03SPEC · FROM-DATA-TO-ACTION

From data to action

Collecting sensor data is only the start. Value comes from turning readings into decisions: alerts when a freezer warms up, maintenance tickets when vibration patterns change, or dashboards that show energy waste by shift. Defining these actions early prevents projects that gather data nobody uses.

Edge computing processes data close to devices, filtering noise, detecting events locally and reducing bandwidth and cloud costs. It also allows immediate responses when connectivity is unreliable, such as shutting down equipment when safety thresholds are crossed. Cloud platforms aggregate data across sites for trend analysis, reporting and machine learning. Predictive maintenance models, for example, learn from historical sensor data and failures to forecast problems before they cause downtime.

Integration with business systems closes the loop. Alerts can create work orders in maintenance software, update ERP inventory or notify staff through mobile apps, so insights lead directly to action. Measure how often alerts lead to action, and tune thresholds to keep them meaningful.

Technologies we use for IoT development

Proven, well-supported tools chosen for your scale, budget and team, never for novelty.

  • Python
  • Node.js
  • AWS
  • Azure
  • React
  • Flutter
  • PostgreSQL
  • Kafka
  • Grafana
  • Docker

IoT Development FAQs

Something else on your mind? Ask a consultant and get a reply within one business day.

How much does IoT development cost?

Cost depends on the number of device types, firmware scope, connectivity method, cloud features such as rules and analytics, the number of app platforms and any certification work. A pilot for a few dozen devices costs much less than a full fleet platform. A fixed quote follows a free consultation.

How long does an IoT project take?

A working pilot with firmware, cloud ingestion and a basic dashboard often takes a couple of months. Production rollout, mobile apps and analytics follow in phases after the field trial.

Do you design the hardware as well?

Our focus is software: firmware, connectivity, cloud and apps. For PCB design, enclosures and manufacturing we work alongside your hardware team or vendor and share clear requirements for the software side.

Should we use AWS, Azure or a self-hosted IoT platform?

Managed platforms like AWS IoT Core and Azure IoT Hub are quick to start and scale well. Self-hosted stacks with an MQTT broker and time-series database can be cheaper at high volume and avoid lock-in. We compare total cost for your device count and data rate.

How do you secure IoT devices?

Each device gets a unique identity and certificate, all traffic is encrypted, firmware updates are signed, debug ports are locked in production, and the cloud side follows least-privilege access. We also plan how to revoke a lost or tampered device quickly.

Can you work with devices we already have installed?

Yes. We often integrate existing sensors, PLCs and gateways over Modbus, OPC UA, MQTT or vendor APIs, and add new firmware only where the current devices cannot meet your needs.

How should we run an IoT pilot?

Start with a small number of devices at representative sites, a clear business question and success criteria, such as detection accuracy or maintenance savings. Test connectivity, installation, power and data quality in real conditions, then refine hardware and software before committing to large-scale manufacturing or rollout.

How do over-the-air firmware updates work?

Devices download signed firmware packages from the cloud platform, verify their authenticity, install them into a separate memory area and switch over only after a successful check, keeping the previous version available for rollback. Updates are typically released to small device groups first before wider rollout.

Can IoT data integrate with our ERP or maintenance systems?

Yes. IoT platforms can send events and summaries to ERP, maintenance management, CRM or analytics systems through APIs and integration services. Common examples include creating maintenance work orders from alerts, updating inventory from sensor readings and adding device data to customer records.

Since our first project

Happy clients
250+
Projects delivered
150+
Industries served
15+
Pricing and engagement models
  • Mutual NDA first

    Signed before any detailed discussion of your idea.

  • You own the code

    100% of the source code and IP is yours on delivery.

  • Reply in one business day

    From a solutions consultant, Mon to Sat, 09:30 to 18:30 IST.

  • Estimate in 48 hours

    A fixed quote or team estimate, broken down by milestone.

We work with clients across the USA, UK, Australia, UAE, New Zealand and India.

Where we work

Tell us what you're building.

A solutions consultant replies within one business day with next steps, a rough estimate and a suggested team.