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About Jinn

Jinn is a Voice AI Tech Company. It helps businesses get better RoI specially by helping sales processes with the use of Voice AI Tech. We are adding a business line which includes an audio device that can reliably capture audio in various environments.

About role:

• This Role in a B2B SaaS startup in AI space led by 2X entrepreneurs from IIT, IIMs. Fast paced with a lot of learning and growth.
• Responsibility: Helping engineer/assemble/bring together an IoT/ hardware device that can accomplish product goals with required constraints. Great high stakes exposure for fresh grads
• Duration: 3-6 months internship || Converts to Full Time based on performance 
• Compensation (Stipend): 20-25k per month || Full time 4.5lpa - 6LPA

Ideal Profile: Interested in building a career in IoT/Tech, good communication, good discipline, solid understand of tech (AI)

Skill Sets

Look for someone who:

•⁠ ⁠Has built at least 1 IoT project end-to-end

•⁠ ⁠Knows Arduino + one of ESP32 / nRF52

•⁠ ⁠Has touched audio input (even basic)

•⁠ ⁠Is comfortable debugging hardware (this is key)

1.⁠ ⁠Embedded Systems Programming (Must-have)

•⁠ ⁠C/C++ (Arduino framework or ESP-IDF)

•⁠ ⁠Working with:

  * ESP32 OR

  * Seeed Studio XIAO BLE nRF52840 Sense

•⁠ ⁠Skills:

  * GPIO, I2S (for mic input)

  * Power modes (deep sleep, wake triggers)

  * Memory constraints (huge in audio use cases)

👉 This is the backbone. If they can’t do this well, project stalls.

2.⁠ ⁠Audio Handling + Signal Basics

•⁠ ⁠Understanding:

  * Sampling rate (16kHz vs 44.1kHz)

  * PCM audio buffers

  * Latency vs quality trade-offs

•⁠ ⁠Practical skills:

  * Using I2S microphones (INMP441, etc.)

  * Basic noise filtering

  * Voice Activity Detection (VAD)

👉 Without this, you’ll just get noisy unusable recordings.

3.⁠ ⁠Power & Hardware Basics (Often underestimated)

•⁠ ⁠LiPo battery handling

•⁠ ⁠Charging IC (TP4056 type)

•⁠ ⁠Power optimization:

  * Sleep modes

  * Sampling intervals

Many prototypes fail here (battery drains in 1 hour 😅)

4.⁠ ⁠Connectivity (BLE / WiFi)

•⁠ ⁠BLE (for XIAO nRF52840):

  * Data chunking (BLE MTU limits!)

  * Pairing + mobile relay model

•⁠ ⁠WiFi (for ESP32):

  * HTTP / WebSocket streaming

  * Retry + buffering

Trade

Job Description

Experience: Senior Hardware Engineer 4-7 years

Job Location: Pune

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Mandatory:

• Responsible for safety electronics hardware product from requirement till validation with certification body
• Design experience on Digital circuits, Analog circuits and microcontroller based design
• Experience/exposure on board bring-up testing, prototype testing and troubleshooting.
• Experience/exposure on Circuit simulation tools such as PSPICE, LTSpice and able to perform reviews
• Knowledge of schematic capture tools like Mentor Graphics DxDesigner and able to perform reviews
• Perform MATHCAD calculation (i.e. in excel or tool) based on hardware design and able to perform reviews
• Contributes to electronics hardware related functionality safety reviews
• Designs multilayer boards and worked on board stack up products
• Planning, Design, Analysis, Compliance / Precompliance Testing and Manufacturing of electronic board(s), product(s) with system understanding.
• Works closely with other engineering disciplines (e.g. mechatronics, internal and external industrial engineering, technical sales towards customer) to ensure quality, to fulfill the requirements and to reach target costs.
• Provides life cycle analysis of electronic components and suggest alternate for replacement
• Creates hardware documentation e.g. BOM, design and test specifications
• Performs activities after serial launch, e.g. change and obsolescence management.
• Good understanding of variety of electronic components and their function
• Understanding of PCB layout and able to perform Layout review

Desirable:

• Carryout FMEA/DFMEA analysis.
• Is responsible for product safety
• Requirement Engineering Certifications like CPRE
• Consults in commissioning products in the field, in order to support responsible Engineer

Job Title: PCB Designer

Company: Aproposdrive Technologies Pvt. Ltd.

Job Description:

We are looking for a skilled PCB Designer to join our innovative team at Aproposdrive Technologies. The role involves designing and developing PCB layouts for cutting-edge electronic products, ensuring high performance, reliability, and manufacturability.

Key Responsibilities:

• Design multi-layer PCBs using industry-standard tools (Altium / Eagle / KiCAD / etc.)
• Schematic design and component library creation
• Collaborate with hardware engineers for circuit design and layout optimization
• Generate manufacturing files (Gerber, BOM, Assembly drawings)

Requirements:

• Knowledge of PCB design tools
• Understanding of circuit schematics & layout practices
• Attention to detail & problem-solving skills