Technical Lead (Embedded Software - Linux)

JOB DESCRIPTION:

Position : Linux BSP developer

Location : Bangalore 

Experience : 3 to 10 Years 

Requirements :

1. 3 to 10 Years of proficiency working on C and Embedded Linux BSP (Board Support Package).
2. Highly proficient and possess working in Linux kernel and Linux device drivers.
3. Hands on experience on working on platform of MIPS, ARM etc.
4. Working knowledge and strong understanding of Device Tree.
5. Understanding of Make files, their customization and Cross Compilation and Shell scripting.
6. Experience in working on U-boot.
7. Video and Camera domain knowledge will be a BIG advantage.
8. Knowledge of secure boot would be an added advantage.

Company background and Vision

We at Neysa believe that good software is one where you don’t have to (necessarily) read the full manual. Good software is intuitive, inviting and accommodating. Most importantly, good software should make life easy. That’s easier said than done, though. Good software is definitely hard to write. For the end user to be required to do the least amount of work, the developer has to do the most. To get the most out of a computer system, the code should be as native as possible. Neysa is out to build the most intuitive network management software ever, and we hope you would write code to bring that vision to life.

Day in the life In this role...

Work with time-sensitive and streaming data for analysis, filtering and sorting, for example, the C++ STL. Create parallel processing architectures which can scale up and down on demand. Interact with external systems and handle their idiosyncrasies in a live, data-heavy, time-constrained environment. Provide a resilient and predictable platform for upper-layer applications. Come up with bespoke solutions for real-world data handling problems. Handle cryptography and communication security over untrusted channels.

Must-have skills

On day one, we'll expect you to... Have a deep understanding of object-oriented programming, socket programming and memory management techniques. Have experience with multi-threaded and multi-core programming and its associated concurrency, locking and synchronization techniques. Be aware of interprocess communications (IPC/gRPC) and message queueing. Be comfortable with mathematical functions and the associated libraries in system programming. You also should be unafraid to use math to optimize your code. Understand synchronous and asynchronous communication, and when to use what. Be comfortable in handling low-level byte-handling operations.

What separates the best from the rest

You will need to have... The initiative to work on your own, at your own pace, but on a schedule. The courage to iterate, re-iterate and the re-re-iterate till you get it right. And then defend your design philosophy. Think through all the possible applications of your work, and then make sure it performs awesome in every one of them. Making the right algorithm choices based on design requirements. Write good, commented and (hopefully) error-free code. Logic failures are acceptable, but poor error handling is not.

What you can expect

The best equipment which complements your talents. The best tools in the business for you to bring your creations to life. A great environment. Flexible work hours, and flexible work locations. You will need to be in the office though. The opportunity to make your mark and shape the future. And have fun…

The Technical Skill Tree

Things you must know…

C, C++, Java, system programming, stream programming, socket programming, Linux Internals, Hooks and System Call and Kernel APIs. Locking and synchronizing techniques like mutexes, atomics, deadlocks and races and ways to avoid them. “Safe” programming, exception handling. String input/output and manipulation, data structure(hash tables, graphs, stacks, queues, trees, binary trees) and operations on them. System memory management, instruction reordering and memory order. A “code-based” understanding of the TCP /IP stack and other networking protocols.

Great if you know....

Garbage collection in C++, thread-safe and type-safe programming, hierarchal exceptional handling. Specialised algorithms for data collection, analysis and presentation. Understanding of the REST, protobuf, XML, JSON and other data interchange formats. Understanding of cryptographic libraries, key management concepts, and symmetric and asymmetric encryption. STL containers, API service creation, “daemons”, operating system services, microservices,

We'll help you out on ...

Web servers, system administration, website management, code management systems, and code debugging systems. CI/CD, Automation frameworks. Version management tools.

The Neysa Team

Neysa is founded by a team, which has nurtured a multi-million dollar business from its inception and grown it to be the best in its industry. We are problem solvers at heart, and we get our kicks when our ideas are out there, taking a crack in the real world. Never accepting the status quo, we have always pushed the boundaries of what is possible. And changed our lives, the people we work with and the community in which we operate.

About us:

Arista Networks was founded to pioneer and deliver software driven cloud networking solutions for large datacenter storage and computing environments. Arista's award-winning platforms, ranging in Ethernet speeds from 10 to 400 gigabits per second, redefine scalability, agility and resilience. Arista has shipped more than 20 million cloud networking ports worldwide with CloudVision and EOS, an advanced network operating system. Committed to open standards, Arista is a founding member of the 25/50GbE consortium. Arista Networks products are available worldwide directly and through partners.

About the job

Arista Networks is looking for world-class software engineers to join our Extensible Operating System (EOS) software development team.As a core member of the EOS team, you will be part of a fast-paced,high caliber team-building features to run the world's largest data center networks.Your software will be a key component of Arista's EOS, Arista's unique, Linux-based network operating system that runs on all of Arista's data center networking products.

The EOS team is responsible for all aspects of the development and delivery of software meant to run on the various Arista switches.You will work with your fellow engineers and members of the marketing team to gather and understand the functional and technical requirements for upcoming projects.You will help write functional specifications, design specifications, test plans, and the code to bring all of these to life.You will also work with customers to triage and fix problems in their networks. Internally, you will develop automated tests for your software, monitor the execution of those tests, and triage and fix problems found by your tests.At Arista, you will own your projects from definition to deployment, and you will be responsible for the quality of everything you deliver.

This role demands strong and broad software engineering fundamentals, and a good understanding of networking including capabilities like L2, L3, and fundamentals of commercial switching HW.Your role will not be limited to a single aspect of EOS at Arista, but cover all aspects of EOS.

Responsibilities:

• Write functional specifications and design specifications for features related to forwarding traffic on the internet and cloud data centers.
• Independently implement solutions to small-sized problems in our EOS software, using the C, C++, and python programming languages.
• Write test plan specifications for small-sized features in EOS, and implement automated test programs to execute the cases described in the test plan.
• Debug problems found by our automated test programs and fix the problems.
• Work on a team implementing, testing, and debugging solutions to larger routing protocol problems.
• Work with Customer Support Engineers to analyze problems in customer networks and provide fixes for those problems when needed in the form of new software releases or software patches.
• Work with the System Test Engineers to analyze problems found in their tests and provide fixes for those problems.
• Mentor new and junior engineers to bring them up to speed in Arista’s software development environment.
• Review and contribute to the specifications and implementations written by other team members.
• Help to create a schedule for the implementation and debugging tasks, update that schedule weekly, and report it to the project lead.

Qualifications:

• BS Computer Science/Electrical Engineering/Computer Engineering 3-10 years experience, or MS Computer Science/Electrical Engineering/Computer Engineering + 5 years experience, Ph.D. in Computer Science/Electrical Engineering/Computer Engineering, or equivalent work experience.
• Knowledge of C, C++, and/or python.
• Knowledge of UNIX or Linux.
• Understanding of L2/L3 networking including at least one of the following areas is desirable:

1. IP routing protocols, such as RIP, OSPF, BGP, IS-IS, or PIM.
2. Layer 2 features such as 802.1d bridging, the 802.1d Spanning Tree Protocol, the 802.1ax Link Aggregation Control Protocol, the 802.1AB Link Layer Discovery Protocol, or RFC 1812 IP routing.

• Ability to utilize, test, and debug packet forwarding engine and a hardware component’s vendor provided software libraries in your solutions.
• Infrastructure functions related to distributed systems such as messaging, signalling, databases, and command line interface techniques.
• Hands on experience in the design and development of ethernet bridging or routing related software or distributed systems software is desirable.
• Hands on experience with enterprise or service provider class Ethernet switch/router system software development, or significant PhD level research in the area of network routing and packet forwarding.
• Applied understanding of software engineering principles.
• Strong problem solving and software troubleshooting skills.
• Ability to design a solution to a small-sized problem, and implement that solution without outside help.Able to work on a small team solving a medium-sized problem with limited oversight.

Resources:

• Arista's Approach to Software with Ken Duda (CTO): https://youtu.be/TU8yNh5JCyw
• Additional information and resources can be found at https://www.arista.com/en/

About us:

Arista Networks was founded to pioneer and deliver software driven cloud networking solutions for large datacenter storage and computing environments. Arista's award-winning platforms, ranging in Ethernet speeds from 10 to 400 gigabits per second, redefine scalability, agility and resilience. Arista has shipped more than 20 million cloud networking ports worldwide with CloudVision and EOS, an advanced network operating system. Committed to open standards, Arista is a founding member of the 25/50GbE consortium. Arista Networks products are available worldwide directly and through partners.

About this role:

• You will be working with the WiFi team at Arista, developing cutting edge and next generation WiFi solutions in a fast-paced environment. The WiFi team is responsible for the end to end development of the Cloud managed WiFi product portfolio of Arista. This specific position is for the WiFi AccessPoint team.
• As a core member of the AccessPoint team, you will be working closely with relevant teams to understand product requirements, design the solution, build the software and deliver it for final validation and customer deployment.
• You will also keep track of new and emerging technologies and their impact on Arista products, come up with new and innovative ideas to improve and differentiate the product and help Arista become a leading player in the Campus space.
• You will work closely with sales and support teams to push new solutions, understand customer needs and pain points and help resolve escalations.
• You will not be limited to a single aspect of the product, it will be broad encompassing many different aspects including but not limited to developing new Access Points, designing and implementing new features, tracking new technologies and working closely with the sales and customer teams.

Requirements:

• Strong engineering and Computer Science fundamentals

• Expected to have a strong background in software development and good understanding of systems and networking areas with the knowledge of the WiFi area as an added bonus.

• Minimum 4+ years of relevant experience

• Well versed with programming in one of C/C++ languages

• Experience working in a Linux environment, developing applications or Linux drivers

• Proven experience in any of the below:

1. Network device drivers, operating system internals, Kernels, compilers, SOC architecture
2. Experience in developing Wi-Fi features (802.11), WLAN MAC Protocol, system integration, evaluate various performance parameters.
3. User space development for connectivity related products (Wireless Lan access points/ controllers, networking equipment) in one or more of following areas:

• HostAPD, Portal, RADIUS, AAA, Identity and role management, Radsec

• Tunnels, Firewall, Iptables, Flow Classification, QoS, TLS, DTLS Preferred Skills

• Experience with Wi-Fi device drivers on Linux.

• Hands-on experience in working with one or more WIFI chipset platforms

• Good System Level understanding of the Wireless AP functionality

• Experience in developing Wi-Fi features, system integration, evaluate various performance parameters

Resources:

• Arista Cognitive WiFi : https://www.arista.com/en/products/cognitive-wifi https://youtu.be/cT1INdR-xHQ https://www.youtube.com/watch?v=olPkCOT3MdA
• Arista Cognitive WiFi Datasheet: https://www.arista.com/assets/data/pdf/Datasheets/CloudVision-Wifi-Datasheet.pdf
• Arista's Approach to Software with Ken Duda (CTO): https://youtu.be/TU8yNh5JCyw
• Additional information and resources can be found at https://www.arista.com/en/

• Bachelor’s degree in Electrical or Electronics Engineering with 1-3 years of relevant experience.
• Highly experienced in Embedded C, C++ coding as per MISRA standards
• Experience in firmware programming for 8 bit, 16 bit and 32 bit controllers.
• Knowledgeable in Linker Scripts, Make files & firmware debugging using JTAG or on the UART console. 
• Experienced in Communication peripherals like SPI, UART, I2C, CAN, etc.
•  

• Ideation, designing, prototyping, and developing as per product requirements.

• Expertise in system architecture and design for Embedded software systems.
• Develop modular Embedded Code to port into different projects.
• Experience on Real Time Systems and Scheduling mechanisms
• Development experience in "middleware" / “application” / Low layer.
• Experience with developing embedded code for networking technologies like TCP/IP and UDP would be a plus.
• Document state machine diagrams, flow charts to understand the system architecture
• Working closely with Design teams to understand Hardware Implementation.
• Develop Test methods, in some cases automated test cases to test the firmware code and support hardware engineers.
• Use Debuggers, oscilloscopes, power supplies, and other necessary electrical tools to debug the code for problem-solving.
• Excellent reading skills for complete understanding of technical documents such as Processor Architecture Specifications and MCU hardware manuals, schematics etc.
• Ability to generate ideas in response to complex issues and execute on solutions.
• Python programming is a big plus.

Job Description:

WLAN Linux Device Driver development (802.11ax preferred)

• WLAN Debugging
• WLAN Firmware development (802.11ac, 802.11n)
• Networking/Wireless Domain knowledge
• Hostapd, Supplicant
• Cross compiling/porting experience
• Performance optimization & Firmware enhancements

Must have Skills:

• 1-10 years of experience in Embedded Software Design, Implementation and testing
• Good knowledge of C or C++
• Basic knowledge in Scripting (Shell, Perl or Python)
• Proficiency in Problem Solving and Debugging skills
• Excellent team working skills
• Experience with version control e.g. GIT
• Basic experience of working in Linux OS
• Network Drivers
• WLAN Protocol Knowledge – 11n, 11ac
• WLAN Linux Device Drivers
• Hostpad, Supplicant
• WLAN Debugging
• Fluent in English

Desired Candidate Details:

• Design, development, and maintenance
• WLAN Stack development and debugging
• Feature Enhancements, Applications, Tools for SDKs
• Basic module level unit testing, System testing
• Providing support to technical documentation team and field application engineers
• Close collaboration with the Chipset Vendor on the Software Development
• Participations in the Product design and Software Design Documentation – High level / Module level / Low level design
• Troubleshooting software and architectural issues

We are looking for a seasoned Wireless LAN Software Engineer to join our Wireless & Networking team in Chennai, Pollachi, Kochi (Cochin), Gurugram, Manesar, Bengaluru (Bangalore). The candidate must be an experienced Engineer and a good team player, who will work on Wireless software solutions which will enable us to develop the products for our customers quickly with industry leading quality. Working with Embedded Software in agile development projects, you will be responsible for creating and maintaining software of Wireless Access Point and Router Products including Module design, Development, JIRA Updates and Unit testing of the Software that is meeting industry standards, creating demos of the solution and customer support.