Senior BLE Firmware Software Engineer
About Company
https://espressif.com/">Espressif Systems (688018) is a public multinational, fabless semiconductor company established in 2008, with headquarters in Shanghai and offices in Greater China, India and Europe. We have a passionate team of engineers and scientists from all over the world, focused on developing cutting-edge WiFi-and-Bluetooth, low-power IoT solutions. We have created the popular ESP8266 and ESP32 series of chips, modules and development boards. By leveraging wireless computing, we provide green, versatile and cost-effective chipsets. We have always been committed to offering IoT solutions that are secure, robust and power-efficient. By open-sourcing our technology, we aim to enable developers to use Espressif’s technology globally and build smart connected devices. In July 2019, Espressif made its Initial Public Offering on the Sci-Tech Innovation Board (STAR) of the Shanghai Stock Exchange (SSE).
Espressif has opened a Technology Center in Pune (Baner), India, which will focus on embedded software engineering and IoT solutions development for our growing customers.
About the Role
Espressif is looking for Embedded Software Engineers to join the software department located in India. You will work in a diverse team where your colleagues are from Czech, Russia, India, Australia and so forth. Here, you get a chance to be a member of the core team in Espressif and work with talented engineers from all over the world.
The BLE Firmware Development Team is now focused on the development of the Bluetooth 5.x standard and BLE Mesh standard.
BLE FW Team is looking for a self-starting, high-technical, energetic individual with keen attention to details. The Candidate will be actively involved in:
- Development of Bluetooth Low Energy (BLE) Firmware for Espressif Bluetooth chips.
- Development of new firmware for BLE latest specification (BLE 5.x, BLE Mesh, etc).
- Development of BLE chip validation and Bluetooth Qualification.
- Research of cutting-edge and challenging Bluetooth technologies (BLE Audio, BLE Direction Finding, Next-Generation BLE Chip, etc).
- Supporting the existing firmware through feature additions, enhancements and maintenance.
- Working with systems team and cross-functional teams to deliver quality software following well-established software development processes.
- Resolving issues as reported by internal test teams as well as customers.
Requirements
Required skills
- Bachlor's degree or above in Electronic Engineering, Communications Engineering, Automation or other related majors
- Familiarity with Bluetooth Low Energy (BLE) protocol or BLE Mesh protocol
- Proven experience in developing BLE stack / firmware (2+ years, both BLE host and controller) or BLE Mesh stack (2+ years)
- Experience with software engineering processes and the full software development lifecycle including requirements, design, implementation, testing, and documenting in Continuous Integration environment
- Strong experience and proficiency in C programming (3+ years) for embedded platforms required
- Excellent problem solving and debugging skills
Bonus point
- Experience in developing BLE profiles and BLE applications (e.g. HID, ANCS, Homekit, etc)
- Good understanding of other networking protocol stacks is highly desired (e.g. Zigbee, IEEE 802.11, UWB, Lora, NB-IoT, etc)
- Strong Real-time systems and software engineering skills required (e.g. FreeRTOS, etc)
- One or more scripting languages (e.g. Python, etc)
- Experience with variety of software productivity tools (e.g. Git, Jira, etc)
What to expect from our interview process
- The first step is to email your resume or apply to the relevant open position, along with a sample of something you have worked on such as a public GitHub repo or side project etc.
- Next, post shortlisting your profile recruiter will get in touch with you via a mechanism that works for you e.g. via email, phone. This will be a short chat to learn more about your background and interests, to share more about the job and Espressif, and to answer any initial questions you have.
- Successful candidates will then be invited for 2 to 3 rounds of technical interview as per previous round feedback.
- Finally, Successful candidates will have interview with HR.
What you offer us
- Ability to provide technical solutions, support that fosters collaboration and innovation.
- Ability to balance a variety of technical needs and priorities according to Espressif’s growing needs.
What we offer
- An open minded, collaboration culture of enthusiastic technologist.
- Competitive salary
- 100% company paid medical/dental/vision/life coverage
- Frequent trainings by experienced colleagues and chances to take international trips, attend exhibitions, technical meetups and seminars.

About Espressif Systems India Pvt Ltd
About
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Mandatory Skills:-
C Programming and data structures.
Linux Internals ( System calls, IPC, Network Programming, POSIX Multi-thread programming)
Desirable Skills :-
C++ and OOPs knowledge
Linux system start-up sysvinit, systemd,
Bootloaders : uBoot
Message bus protocols like dbus
Basic Linux Device driver knowledge
Linux Build framework – Yocto-Bitbake, Makefiles
Python scripting
Debug using tools such as GDB
Version control - GIT and SVN
- Work directly with the other Software/Firmware Engineers and Electrical/RF/Systems Test Engineers to write needed software
- Design and implement software platform for firmware on embedded CPUs with multiple OS such as Windows, Linux, FreeRTOS, TI-RTOS and embedded Linux
- Use compliers, debuggers revision control and automated build systems.
- Design/develop components of software platform for use by other developers to extend its capabilities and build custom applications/behavior on top
- Develop build methodologies, debugging tools/utilities
- Develop and release Software using Agile methodology
- Write unit tests and support continuous integration and automated test methodology
- Brainstorm for new ideas and ways to improvement product and processes
- Consult with peers for feedback during debug/testing stages
- Document and maintain design processes
Software Engineer(Layer 2/Layer 3)
Location : Gurgaon (WFH currently)
Experience/ Skills Required : 5 to 10 years
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Domain knowledge required: IPv4, TCP/UDP, IPv6, NAT, Firewall (iptables), DHCPv4, DHCPv6, IPv6 prefix delegation, Port forwarding, Source based routing, Policy based routing, L3 QoS, IGMP proxy, IPv6 MLD snooping, DNS, DNS proxy. Knowledge on VoIP is a bonus.
Management methods: TR069, SNMPv2, CLI.
Operating system: Linux, OpenWrt
Programming languages: C(must have), Python
Working for us means having a healthy interest in Software but most of all, you like to work in a team. You like to take initiative and have the “just do it” approach. Having the right mentality and attitude are more important for us than a degree. Dedication, investigation and responsibility are keywords for us. Preferred years of experience in industry/technology: 5-10 years.
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- Technical Experience on Physical Layer of 3GPP LTE
- Experience on DSP Development\
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- understanding of Wireless Communications
- Experience on MAC-PHY interface
- Behavioral Interpersonal skills & Ability to work in team
- Good Communication Skills Good Analytical Skills
Desired Skills and Experience:

Role As part of the role, the Developers / Senior Developers will be responsible for Design, Coding and Integration while meeting the quality targets set for the project. The Tech Leads will be additionally responsible for Estimation, Architecture, Design, Technical Reviews, Customer Interaction, Building and Mentoring a talented team of Engineers
Knowledge & Skills
- Technical Experience on Physical Layer of 3GPP LTE Experience on DSP Development\
- Proficient in C
- Good understanding of Wireless Communications
- Experience on MAC-PHY interface
- Behavioral Interpersonal skills & Ability to work in team
- Good Communication Skills Good Analytical Skills
- Customer Orientation Job Title LTE Developer with DSP Physical Layer(Engineer/Senior Engineer)






