Senior Hardware Engineer

Job Title: Senior Hardware Engineer

Company: Aaizel International Technologies Pvt. Ltd.

Location: On Site (Gurgaon)

Employment Type: Full Time

About Aaizeltech

Aaizeltech is a deep-tech company building AI/ML-powered platforms, scalable SaaS applications, and intelligent embedded systems. We’re looking for an experienced Senior Hardware Engineer (6-10 yrs) to work on advanced IoT & RF systems- especially LoRa-based devices, secure telemetry modules, and industrial IoT controllers.

We’re looking for a Senior/Principal Engineer who can independently drive end-to-end hardware + firmware development for advanced IoT/RF products

What You'll Work On

• Complete hardware architecture ownership: requirements → schematics → PCB → bring-up → production
• Mixed-signal PCB design (MCU, RF, power, sensors, high-speed & low-speed interfaces)
• RF front-end design: SAW filters, LNAs, PAs, matching networks, antenna feed design
• Sub-GHz RF layout (403 / 433 / 868 / 915 MHz): impedance control, grounding, isolation
• Power system design:
• Battery-powered systems (Li-ion / Li-SOCl₂ / supercaps)
• DC-DC (buck/boost), low-noise LDOs, power sequencing
• Ultra-low-power optimization and sleep-mode analysis
• Antenna integration:
• PCB, monopole, dipole, external antennas
• S11 / VSWR tuning and real-world enclosure effects
• Sensor & peripheral integration:
• GNSS, IMU, barometric, temperature, humidity, industrial sensors
• Analog front-ends, ADC accuracy, filtering, calibration
• Firmware development on STM32 (WL / H / L / F series), PIC, and Raspberry Pi
• LoRa PHY/MAC, custom packet framing, timing & synchronization
• Design and implement end-to-end encrypted telemetry using AES-128 / AES-256
• Hardware-assisted cryptography using MCU crypto engines (STM32 HW AES, RNG, HASH)
• C / C++, FreeRTOS, low-power firmware architecture
• Bootloaders, OTA / FOTA, firmware versioning & rollback strategies
• RS485 / Modbus, RS232, CAN (if applicable)
• Ethernet (TCP / UDP), MQTT, serial-to-IP gateways
• Relay outputs, digital I/O isolation, surge & ESD protection
• End-to-end product lifecycle ownership:
• Prototype → validation → pilot → mass production
• Board bring-up & debug (power, clock, reset, RF, peripherals)
• DFM / DFA / DFT reviews with CM & PCB vendors
• Test-point planning, bed-of-nails / functional test jig design
• Component lifecycle management, alternates, BOM risk mitigation
• EMI/EMC pre-compliance design & review (layout, filtering, shielding)
• Support certifications (RF, safety, EMC) and field-failure analysis

What You Should Bring

• 6+ years in embedded hardware & firmware product development
• Strong background in mixed-signal electronics, RF design, and power electronics
• Proven experience with multi-layer PCB layout (2–6 layers), controlled impedance
• Hands-on experience with oscilloscope, spectrum analyzer, VNA, logic analyzer, SWD/JTAG
• Practical knowledge of ESD, surge protection, grounding & shielding techniques
• Strong understanding of symmetric cryptography (AES) and practical embedded implementations
• Experience implementing secure telemetry in constrained, low-power RF systems
• Familiarity with secure bootloaders, encrypted firmware updates, and device provisioning
• Shipped 3+ hardware products into real-world deployment
• Comfortable owning failures, debugging in lab & field conditions
• Experience working with contract manufacturers and test houses
• Strong documentation, schematic annotation & design justification skills
• EMI/EMC lab exposure (radiated & conducted emissions testing)
• Environmental testing (thermal, vibration, humidity)
• Knowledge of regulatory standards (ETSI / FCC / CE / WPC)

How to Apply

Please send your resume and a cover letter outlining your relevant experience to [email protected]

Please share your resume at [email protected]