Control System Engineer

Key Responsibilities:

 - Develop and customize OpenWrt build systems for operator-specific router distributions

 - Build high-performance network stacks and middleware for Wi-Fi 6/7 & 5G-FWA routers

 - Implement TR-181/USP/TR-369 device management standards for global operators

 - Design scalable, modular embedded Linux systems for complex CPE environments

 - Debug and resolve critical issues: kernel panics, memory leaks, race conditions

 - Collaborate with hardware and product teams to deliver carrier-grade solutions

Must-Have Skills:

 - OpenWrt Proficiency: Customizing build systems, package configurations, feeds

 - Programming: Advanced C/C++ for resource-efficient, high-performance networking

 - Network Stack & Protocols:

   - IPv4/IPv6: Dual-stack, DHCPv4/v6, SLAAC, Prefix Delegation, MAP-T/E, DS-Lite

   - L2/L3: Linux Bridge, VLAN 802.1Q/QinQ, SoC hardware offloading

   - Routing: Multi-WAN, Failover, Policy-Based Routing, IGMP/MLD Snooping/Proxy

 - Device Management: TR-181/TR-098 data models, USP/TR-369 experience

 - Debugging: GDB, Valgrind, JTAG, Wireshark, Tcpdump

 - System Design: Defining software interfaces & integrating cross-platform middleware

Preferred Qualifications:

 - Hands-on with Airoha SDKs & MediaTek WiFi drivers

 - Familiarity with RDK-B, prplOS, prplLCM

 - QoS/QoE: Traffic Shaping - tc, HTB, FQ_CoDEL, DPI, traffic classification for Gaming/VoIP

 - Security: Firewall4/Nftables, Iptables, VPN - WireGuard, IPsec, hardware crypto-acceleration

Key Responsibilities

1. Kernel Lifecycle & Maintenance

Upstream Alignment: Lead the strategy for upgrading enterprise kernels (e.g., migrating from LTS 5.15 to 6.6) while maintaining binary compatibility where required.

Patch Porting: Expertly port functional and performance patches between disparate kernel versions, resolving complex code conflicts and API changes.

CVE Mitigation: Monitor the Linux Kernel Mailing List (LKML) and security advisories to identify and backport CVE patches from upstream to production environments.

2. Deep-Dive Debugging & Stability

Panic Analysis: Act as the final escalation point for Kernel Panics and "Oops" messages. Utilize kdump, crash, and gdb to perform post-mortem analysis of vmcores.

Boot-Time Resolution: Debug critical failures during the early boot process (UEFI handoff, initramfs, and early kernel init) where standard logging is unavailable.

Performance Tuning: Use ebpf, ftrace, and perf to identify bottlenecks in memory management, scheduler latency, or I/O throughput.

3. Driver Development & Hardware Integration

Driver Ownership: Design, develop, or maintain at least one Open Source or Proprietary Device Driver (Network, Storage, GPU, or Character devices).

Hardware Abstraction: Interface directly with hardware registers, managing DMA mappings, and optimizing interrupt handling (MSI-X, Threaded IRQs).

Out-of-Tree Management: Maintain driver compatibility across kernel updates using DKMS or similar frameworks.

4. Infrastructure & Automation

Registry Management: Oversee the distribution of custom kernel builds and modules via GitLab Container/Package Registries.

CI/CD for Kernel: Build automated testing pipelines (Hardware-in-the-loop) to validate kernel stability before enterprise-wide deployment.

Required Technical Skills:

Languages: Mastery of C/C++ Programming (C is preferred)

Kernel Internals: Deep understanding of VFS, Memory Management (MMU/Paging), Process Scheduling, and Networking Stacks.

Debugging Tools: Expert-level use of kprobes, trace-cmd, valgrind, and hardware-level debuggers (JTAG/Serial Console).

Build Systems: Proficiency with Kbuild, Makefiles, and building RPM/Debian packages for kernel distribution.

Security: Hands-on experience with SELinux/AppArmor policy development and kernel hardening (FIPS, KSPP).

Primary skills:

At least 3+ years of working experience on embedded firmware development

- Experience in multithreaded programming, network programming (wired and wireless protocols), real-time programming, cross-platform and cross-language development

- Hands-on experience on driver development for various sensors

- Working knowledge of communication protocols like UART, I2C, SPI, USB, Ethernet, etc

- Product development experience with range of microcontroller/microprocessor architectures, adoption of bare-metal, RTOS and Linux operating systems on new platforms

-Hands-on experience on software development in Bluetooth domain is added advantage

- Experience with hardware lab equipment such as digital scope, logic analyser and JTAG

- Understanding of embedded development constraints and system performance

- Experience with programming in C/C++ and Embedded C

We are looking networking professionals with the following skill set,

Experience :6+ years of experience in the networking domain

Key skills:

• Must have 6+ years of experience in C/C++ programming language.
• Knowledge of Go programming language and Python programming language is a big plus.
• Strong background in L4-L7 Internet Protocols TCP, HTTP, HTTP2, GRPC and HTTPS/SSL/TLS.
• Background in Internet security related products such as Web Application Firewalls, API Security Gateways, Reverse Proxies and Forward Proxies
• Proven knowledge of Linux kernel internals (process scheduler, memory management, etc.)
• Experience with eBPF is a plus.
• Hands-on experience in cloud architectures (SaaS, PaaS, IaaS, distributed systems) with continuous delivery
• Familiar with containerization solutions like Docker/Kubernetes etc.
• Familiar with server less technologies such as AWS Lambda.
• Exposure to machine learning technologies and distributed systems is a plus

    Requirement analysis

·         Acquisition support (Technical analysis)

·         Automotive ECU software development

·         Diagnostic (UDS) function development

·         Software testing

·         Technical collaboration with internal/external development parties

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/

Summary: 

Hyperspec is building a real time local map for self-driving cars and using cross view localization to enable ubiquitous autonomy. Hyperspec is a VC funded startup.

The principal embedded systems engineer will have deep expertise in embedded systems design, development and worked for years on embedded systems teams. This person is a leader and mentor to junior engineers and shares knowledge about the design and development of embedded systems.

Responsibilities:

• Serves as an expert in all aspects of embedded projects and embedded systems—including designing, developing, testing, and perfecting designs 
• Responsible for updating and working with executive leadership on the development of embedded systems and status of projects 
• Provides guidance and mentoring to other members of the team

Requirements:

• Minimum of bachelors' degree in computer science or engineering
• At least ten years of engineering experience with expertise in software engineering, data structures, and programming techniques
• Deep expertise in C/C++ programming
• Experience with FPGAs, PCB, Xilinx, Altera, or similar SoCs.
• Experience with ISPs, Cameras, Switches a plus.
• Experience in working with real-time operating systems, communications protocols and firmware design.

• Experience in interfaces, IP protocols, and hardware subsystems.
• Experience in working as part of a team and leading teams.

RESPONSIBILITIES AND QUALIFICATIONS

Responsibilities

+ Design, build and maintain low latency, high-performance electronic trading platform components, with a focus on market data, exchange and client connectivity and risk controls.

+ Deliver continuous optimization for latency, scale and resiliency improvements.

+ Participate in system builds for various markets globally, have curiosity and interest in understanding market microstructure details, work closely with engineering, sales and product teams globally for successful delivery of projects.

+ Basic Qualifications

+ Bachelors or Masters degree in computer science or engineering or equivalent experience

+ 5+ years of professional experience developing deterministic high performance, low latency systems in python/C++ (counted in single digit microseconds)

+ Prior experience with FIX and binary exchange connectivity and market data protocols preferred

+ Strong knowledge of object oriented programming, data structures, algorithms and design patterns

+ Critical path analysis, performance optimization and hardware acceleration.

+ Linux systems programming experience including memory management, concurrent programming infrastructure, and the networking stack

+ Experience developing distributed architecture systems and messaging protocols

+ Strong analytical and problem solving skills

+ Comfortable in a fast-paced environment, self-motivated, results driven and commercially focused

Preferred Qualifications

+ Software development in python/C++ in the context of high performance (low- latency, high-throughput) real-time computing.

+ Familiarity with STL and C++11 language extensions, Boost

+ Network programming (sockets, TCP/UDP/Multicast protocols)

+ Multi-threading, concurrent programming

+ Intimate knowledge of compilers, flow of data at hardware level (memory/ caches, buses) + Some experience with FPGA or other hardware acceleration technologies

+ Experience processing large static datasets as well as high volume ticking data sources

+ Over 3 years' experience in Financial industry (Plus)