Senior MCAL Engineer

Job Title: Embedded Firmware Engineer (RF Focus)

Location: Gurgaon, Haryana (On -site)

Employment Type: Full-Time

Experience: 3-5 years

We’re hiring an Embedded Firmware Engineer (3–5 yrs) with strong experience in Sub-GHz RF, LoRa/LoRaWAN, and IoT systems. The role focuses on firmware development, RF communication, and secure telemetry.

About Aaizel Tech

Aaizel Tech is a pioneering tech startup at the intersection of cybersecurity, AI, geospatial solutions, and more. We drive innovation by delivering transformative technology solutions across industries. As part of our dynamic team, you'll gain hands-on experience and learn from experts who are dedicated to pushing the boundaries of what's possible.

Responsibilities

• Develop firmware for STM32 (WL/H/L/F series)

• Design & implement Sub-GHz RF (403/433/868/915 MHz) systems

• Work on LoRa PHY/MAC & LoRaWAN stack (OTAA/ABP, uplink/downlink)

• Perform RF testing & debugging (RSSI, SNR, range testing, SDR/spectrum tools)

• Implement secure communication (AES-128/256, CRC/SHA)

• Develop drivers: UART, SPI, I2C, ADC, DMA

• Work with FreeRTOS (tasks, queues, ISRs, low power)

• Build communication stacks: RS485/Modbus, RS232, MQTT, TCP/IP, UDP

• Implement bootloader & OTA updates

• Debug using SWD/JTAG, logic analyzer, DSO

• Optimize for performance, power, and RF reliability

Requirements

• 3–5 years in embedded firmware + RF systems

• Strong in Embedded C, STM32CubeIDE, HAL/LL

• Hands-on with LoRa/LoRaWAN & Sub-GHz communication

• Understanding of RF fundamentals (link budget, interference, antennas)

• Experience in secure communication (AES)

• Good knowledge of FreeRTOS & industrial protocols (RS485/Modbus)

• Strong debugging skills (firmware + RF)

• Basic hardware/RF PCB understanding

Good to Have

• Experience with ChirpStack / TTN

• Knowledge of FSK/GFSK

• RF certification exposure (CE/FCC/ETSI)

How to Apply

• Please submit your resume, portfolio, and a cover letter outlining your relevant experience and how you can contribute to Aaizel Tech’s success.

About Statcon Electronics 

Statcon Electronics India Limited Statcon Electronics India Limited is a company specializing in the field of power electronics since its inception, with its roots going back to 1986. It has held prestigious clientage both nationally and internationally, with ABB, Alstom, BHEL, Indian Air Force, Indian Army, Indian Railways, GAIL, and Indian Oil, to name a few. SEIL has a diverse portfolio, spanning across 4 sectors – Railways, Power, Defence and Solar energy.  

About the position 

We are looking for a multiple embedded software engineers with experience in developing firmware for controlling power electronics systems. Openings are available for senior and principal engineer positions across multiple product streams, and target markets include the Indian subcontinent, Africa and North America. 

Required Technical skills 

• Demonstrated experience in developing embedded firmware for real-time power electronics systems using 16/32 bit ARM microcontrollers (ST Microelectronics preferred).  
• Must have shipped at least 1 major relevant product to the market which meets standard industry specifications. Experience with designing for North American/European markets a plus. 
• Experience with common communication protocols such as SPI, I2C, USB, UART, Bluetooth, Ethernet, RS232, and RS485 
• Experience with peripherals and systems such as ADC, DAC, timer, GPIO, PWM, DMA, NVIC, serial and parallel interfaces, memory, bootloaders and watchdog timers 
• Proficiency in advanced algorithm development using Embedded C 
• Experience with embedded software tools such as editors, assemblers, compilers, debuggers, simulators, emulators and Flash/OTP programmers. 
• Thorough understanding of power electronics topologies and control strategies 
• Good grasp over digital signal processing techniques 
• Ability to read and interpret component datasheets, PCB schematics and layout design 
• Familiarity with using measurement devices such as oscilloscopes, multimeters, function generators and logic analyzers to bring up and debug hardware 
• Demonstrated knowledge of firmware development best practices (code reviews, unit tests, Software Configuration Management, version control using git etc.) 
• Excellent documentation skills, and a good grasp over the English language 
• Comfort in using modern collaborative tools such as Slack/Microsoft Teams, JIRA/Trello/Microsoft Planner, Confluence/Microsoft OneNote and the like. 

Bonus Technical skills 

• Experience using at least one scripting language, preferably Python 
• Experience with designing for North American/European markets 
• Experience with designing for IEC and BIS standards 
• Familiarity with EMI/EMC process 
• Ability to simulate power electronics systems using Simulink/MATLAB or equivalent open-source tools 
• Familiarity with agile software development processes 
• Experience with Linux administration using command line 

Soft skills 

• Ability to mentor junior engineers and generate testing procedures for people of all skill levels 
• Excellent inter-personal skills 
• Strong attention to detail with the ability to work on tight deadlines 
• Team player with the ability to work independently under minimal supervision 
• Excellent problem-solving skills 
• Ability and desire to learn new technologies quickly 

Qualifications 

• Junior Engineer: A Master's (preferred) in Electrical/Electronics/Computer Engineering with 1 year of industrial experience, or a Bachelor's with 3 years of relevant industrial experience. 
• Senior Engineer: A Master's (preferred) in Electrical/Electronics/Computer Engineering with 4 years of industrial experience, or a Bachelor's with 6 years of relevant industrial experience. 
• Principal Engineer: A Master's (preferred) in Electrical /Electronics/Computer Engineering with 8 years of industrial experience, or a Bachelor's with 10 years of relevant industrial experience. 

Responsibilities 

• Develop, implement and test cutting-edge algorithms for medium and high-power AC-DC, DC-AC and AC-AC conversion of 1 phase and 3 phase AC systems up to 440 V AC, and DC-DC conversion of systems up to 1000 V DC. 
• Develop sensing and IoT solutions for power electronics embedded systems 
• Convert product requirements into technical specifications for Indian and international markets 
• Cover all stages (pertaining to firmware) of V model for product development 
• Generate technical documentation describing product functioning and test procedures for hand-off to SQA 
• Debug product failures in the field using data-driven analysis techniques 
• Mentor junior engineers 
• Host research talks on emerging technologies within the company 

Statcon Electronics is an Equal Opportunity Employer and considers applicants for all positions without regard to race, color, religion or belief, age, marital status, military/veteran status, genetic information, sexual orientation, gender identity, physical or mental disability or any other characteristic protected by applicable laws. Statcon Electronics is committed to creating a dynamic work environment that values diversity and inclusion, respect and integrity, customer focus, and innovation. For more information, visit www.sindia.co.in. 

• 32-bit Microcontroller knowledge is essential (ARM Cortex based micro-controllers (STM32).
• Esp32 architecture knowledge is essential.
• Strong experience in C, C++, Free-RTOS
• Strong experience in CUBEMX IDE, MDK Version 5 – Keil, Arduino IDE environment
• Good knowledge in HW and communication protocols like CAN, SPI, UART, I2C, USB 
• Good knowledge in TFT Displays and Sensors is added advantage
• Good knowledge of implementation of motor controls as required, pulse width modulation schemes (PWM).
• Good knowledge of power electronics (TRIACs, MOSFETs, IGBTs, gate drivers) and require protections (Over/under voltage/current).
• Document firmware designs, specifications, test plans, revisions and produce test reports

• 3-7 years of experience in development of Algorithm & Functions for advance driver assist systems (ADAS), Autonomous driving (AD)
• Experienced in development using MATLAB Simulink, TargetLink, Stateflow
• Design and development of automotive feature/function software/components (ACC, AEB, TSR, LKA etc.) for ADAS/AD systems
• Coordination and regular interaction with different stakeholders and teams like testing, requirements, leads etc.
• Participate in SW requirement generation, SW architecture, detailed design etc

ORGANIZATION

Launched in 2014, Oxit has continually focused on true innovation in IoT services through the creation
of solutions and products for an adaptive global business marketplace. Our diverse list of clienteles,
ranging across a multitude of industries, has grown to recognize and trust Oxit in partnering in all
aspects of Smart Technology capabilities from designing to prototyping, development and carefully
launching their ideas

ROLE

Proficient in connected objects, an IoT embedded engineer develops innovative solutions that help
users to receive, control and manage information.
Conceptualizing, designing, developing, & managing IoT end devices, middleware, interfaces, and
connectivity

RESPONSIBILITIES

PRIMARY RESPONSIBILITIES
● Analyze, discuss and understand user/business requirements
● Translate business requirements to optimizer solutions, system & firmware specifications
● Design & Implement firmware/software as per specifications and conduct unit tests
● Managing & building end devices and middleware (Gateway development)
● Connectivity solutions, protocol implementation, stack development (ex: Lora)
● Perform integration, acceptance tests, troubleshooting, and debugging
● Work in collaboration with other team members, leadership, and other departments towards
solution implementation and delivery
● Adhere to organization/project process standards and guidelines
● Handling internal (team, departments, and leadership) and external (customers & partners)
interactions
● Collaborate with and support Hardware team towards HW design & development
● Collaborate with and support Software team towards backend development, API definition &
interfacing, Mobile, Cloud, & Web application definition

SECONDARY RESPONSIBILITIES
● Researching, creating, and testing IoT solutions
● Designing platform solutions that are cloud-compatible and work with IoT applications
● Providing solutions to issues related to the connection of networks and platforms
● Contribute to improving quality, accelerating development and deployment - process improvement
and tools improvement
● Showcase ability to play different Agile roles and manage small teams
● Supporting management with client interactions and at times leading it

SKILLS

PRIMARY SKILLS
● Hands-on programming experience in C/C++/Python in Embedded/IoT environment
● Good working knowledge of Linux internals & application development
● Good working experience of RTOS & bare metal programming
● Hands-on experience in device driver development
● Hands-on experience with protocol implementation (wired & wireless)
● Experience in executing projects in an Agile/Waterfall model
● Exposure to Gateways, web/cloud computing technologies, APIs, sockets, & related tools
● Exposure to JavaScript, Node.js, and typescript is an added advantage
● Proficient in C, C++, and Python programming, Java script added advantage
● Good understanding of Linux internals, Linux System programming, and application development
on Linux
● Hands-on experience with Container technologies (LXD, Docker and/or Kubernetes)
● Working knowledge and experience implementing FUOTA, Device management
● Working knowledge of Security - Encryption, Decryption, Flash management
● Working knowledge of Web architecture, Interfacing (APIs, MQTT, etc.)
● Hands on experience with Yocto, Ubuntu Core
● Experience with R Pi or similar platforms
● Working Knowledge and experience with LoRaWan on both Gateway and Devices

● Prior experience working on IoT Gateways

SECONDARY SKILLS
● Firm understanding of IoT architecture and principles
● Knowledge of device and data security
● AWS or related cloud architecture, tools & setup, API development
● LoRa stack experience, Network gateway functionality, networking: TCP/IP, DNS, DHCP, HTTP
● ESP32 architecture, Free-RTOS experience
● Work and collaborate well with others
● Strong communication skills
● Strong analytical and problem-solving skills

WORK ENVIRONMENT
● Minimum 3 years of prior experience
with embedded, firmware, & IoT
● Available full time (40 hours a week)
● Remote working infrastructures
● Flexible remote work (work from
anywhere)
● Certain overlap with EST business hours
● Full time (Mon-Fri, 8 hrs/day)
● Agile way of working & mindset
● Team work, frequent interaction &
collaboration with team & leadership
● Collaborations & meetings through
video conferencing
● Friendly & collaborative environment

• Very strong knowledge in Embedded C including
• Data structures
• Function pointers
• Bitwise operations
• Experience with Finite State Machine (FSM) software design
• Required experience in AVR microcontrollers and projects to demonstrate it
• Familiarity with ARM 32 bit microcontrollers (Cortex M or any other)
• Required experience with common communication protocols like SPI, UART, I2C etc.
• Comfortable with reading datasheets and basic hardware schematics
• Comfortable with linux development environment including the use of GCC, gdb, makefile

Soft Skills

• Good communication skills
• Self-driven
• Passion for embedded engineering