Staff SW Engineer

Responsibilities

• Backend Development and Optimization
• Design and implement high-performance backend components, services, and libraries in C/C++/Python.
• Develop modular and reusable software libraries with clear APIs and documentation.
• Optimize memory usage, CPU cycles, and application performance through advanced debugging and profiling techniques.
• Develop multi-threaded and asynchronous applications using POSIX threads, Boost, or similar libraries.
• System Design and Architecture
• Architect and build scalable, distributed backend systems to meet complex business requirements.
• Work on low-latency systems, implementing efficient networking protocols such as TCP, UDP, and custom protocols.
• Contribute to the design of RESTful or binary APIs, ensuring secure and seamless communication between components.
• Embedded and System-Level Programming
• Write and optimize system-level code for Linux environments, focusing on performance and reliability.
• Develop hardware-interfacing applications, including booloader, drivers and kernel.
• Handle memory management, inter-process communication (IPC), and shared resources in constrained environments.
• Performance Tuning and Debugging
• Perform low-level profiling and tuning of applications using tools like perf, VTune, gprof, or Cachegrind.
• Optimize memory management using custom allocators, object pooling, and stack memory usage.
• Use advanced debugging techniques, such as core dumps, stack traces, and hardware breakpoints.
• Identify and eliminate bottlenecks in CPU-bound, memory-bound, or I/O-bound processes.
• Tune compiler settings and write efficient algorithms to achieve optimal performance.
• Debug complex issues in production systems using gdb, strace.
• Networking and Protocol Development
• Develop efficient network protocols and manage socket programming for server applications.
• Implement and troubleshoot networking layers, including SSL/TLS, WebSocket, and HTTP/2.
• Develop custom communication protocols for specialized use cases, such as real-time streaming or IoT.
• Optimize networking stacks using socket programming, zero-copy mechanisms, and protocol offloading.
• Collaborate on the design of custom communication protocols for real-time or distributed systems.
• Familiar with Layer2 802.1Q, VLAN, bridging, spanning tree, LLDP, LACP protocols.
• Familiar with Layer3 Router, Firewall, ACL protocols.
• Familiar with 802.11 wireless protocols.
• Testing and Quality Assurance
• Write robust unit tests using frameworks like Google Test (gtest) or Catch2.
• Perform system-level testing to ensure reliability in production environments.
• Establish continuous integration pipelines for automated testing and deployment of C/C++/Python codebases.
• Security and Compliance
• Implement secure coding practices to prevent vulnerabilities such as buffer overflows, race conditions, and memory leaks.
• Implement secure transport protocols (SSL/TLS) and encrypt sensitive data at rest and in transit.
• Design fault-tolerant systems with redundancy, checkpointing, and automatic failover mechanisms.
• Perform threat modeling and integrate security measures into the development lifecycle.
• Ensure backend systems are secure from common vulnerabilities (e.g., OWASP Top 10).
• Integration with Hardware and External Systems
• Develop backend services that interface with hardware or IoT devices, handling real-time data streams.
• Manage communication with hardware peripherals via protocols like SPI, I2C, or CAN.
• Continuous Improvement and Innovation
• Stay updated with advancements in C/C++/Python standards and emerging technologies.
• Contribute to open-source projects or internal frameworks.
• Propose innovative solutions to improve development workflows, system performance, or user experience.
• Required Qualifications:
• Education: Bachelor's or Master's degree in Computer Science, Software Engineering, or related field.
• Experience: 10+ years of professional experience in Linux Embedded System development.
• Languages and Frameworks:
• Languages: Expert in C/C++/Python
• Build Tools: Familiarity with OpenWrt, Yocto, Makefile, CMake, Autotools.
• System Programming:
• Strong knowledge of operating systems concepts, including threading, memory management, and file I/O.
• Expertise in Linux system programming (e.g., epoll, inotify).
• Advanced knowledge of file systems, process scheduling, and memory management.
• Understanding of real-time constraints and system interrupts.
• Networking and Protocols:
• Experience in socket programming and protocols like TCP/IP, UDP, HTTP/2, gRPC, MQTT, or WebSocket.
• Familiarity with DNS, load balancers, and network security protocols (SSL/TLS).
• Familiarity with network monitoring tools like Wireshark and Tcpdump.
• Database Management:
• Proficiency in relational databases (e.g., MySQL, PostgreSQL) and experience with NoSQL databases like MongoDB or Cassandra.
• Strong skills in designing efficient databas

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