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C Developer - Budapest

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Jr C/C++ Developer
Transaction Network Services
·
3.1
Budapest
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A következőtől: Budapest

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An extraordinarily talented group of individuals work together every day to drive TNS' success, from both professional and personal perspectives. Come join the excellence!

Overview

Waypoint Trading Solutions powers global trading with ultra-low latency connectivity, the world’s largest financial extranet, and fully managed market data solutions. We deliver the speed and reliability that trading firms depend on to execute across exchanges worldwide. We are looking for a motivated Junior C/C++ engineer to join our team and work closely with a Senior Engineer. In this role, you will support the development and enhancement of tools and infrastructure that keep our ultra-low latency Ethernet network performing at the highest level. You will gain hands-on experience with core networking development while helping build monitoring, diagnostics, and performance tools for our production trading environment.

Responsibilities

You will work alongside a Senior Engineer to develop high-performance networking components using Solarflare/Xilinx technology and contribute to the internal tools needed to monitor, analyze, and optimize our ultra-low latency network. The role provides an excellent opportunity to learn kernel-level development, user-space acceleration, systems programming, and tool creation that directly supports our trading platform’s reliability and speed.

Qualifications

Key Responsibilities
  • Support the design, implementation, and optimization of Ethernet networking features in C/C++ for both kernel and user space.
  • Assist with Linux kernel driver development and networking subsystems under the guidance of a Senior Engineer.
  • Learn and apply Solarflare/Xilinx technologies including ef_vi, OpenOnload, TCPDirect, and related kernel-bypass frameworks.
  • Help build and improve internal tools for monitoring, debugging, and visualizing low-latency network performance (latency, jitter, packet loss, throughput, etc.).
  • Contribute to diagnostics and performance analysis utilities used by engineering and operations teams.
  • Troubleshoot and tune networking issues at the hardware, driver, and application layers with senior support.
  • Collaborate on hardware integration, performance testing, and new feature development.
Required Qualifications
  • Solid proficiency in C and C++.
  • Understanding of Ethernet networking and basic packet processing concepts.
  • Some experience with Linux systems and development (kernel/driver experience is a strong plus but not required).
  • Interest in building monitoring, diagnostic, or performance tools.
  • Familiarity with common debugging tools (gdb, perf, Wireshark, etc.).
  • Strong problem-solving skills and eagerness to learn in a fast-paced environment.
  • Ability to work independently on tasks while collaborating closely with a Senior Engineer in a remote setting.
Nice-to-Haves
  • Exposure to Solarflare/Xilinx adapters, ef_vi, Onload, or similar user-space networking technologies.
  • Experience with high-speed Ethernet (10G+) or low-latency system tuning.
  • Background in performance monitoring, telemetry, or visualization tools.
  • Any contributions to open-source projects (Linux kernel or networking).
  • Interest in financial markets or real-time, high-performance systems.
  • Exposure to DPDK, XDP, or related frameworks.
What We Offer
  • Fully remote position with flexible hours.
  • Opportunity to work on mission-critical, ultra-low latency trading infrastructure alongside an experienced Senior Engineer.
  • Strong mentorship and rapid learning opportunities in high-performance networking and systems programming.
  • Collaborative, performance-driven engineering culture.

If you are passionate about technology, love personal growth and opportunity, come see what TNS is all about!

TNS is an equal opportunity employer. TNS evaluates qualified applicants without regard to race, color, religion, gender, national origin, age, sexual orientation, gender identity or expression, protected veteran status, disability/handicap status or any other legally protected characteristic.

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