Jr C/C++ Developer
tnsi· C_001 Transaction Network Services, Inc.
About this role
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.
- 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.
- 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.
- 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.
Frequently Asked Questions
Is the salary disclosed for the Jr C/C++ Developer position at tnsi?
The salary for this Jr C/C++ Developer role at tnsi is not publicly listed. Click "Apply Now" to learn more about the compensation package on their official careers page.
Where is the Jr C/C++ Developer position at tnsi located?
This Jr C/C++ Developer role at tnsi is based in HUN - Budapest. The position is listed as on-site or hybrid. Check the full job description or apply directly to confirm the work arrangement.
Is the Jr C/C++ Developer role at tnsi full-time or part-time?
This is listed as a Full time position. It is posted as a Jr C/C++ Developer role in the C_001 Transaction Network Services, Inc. department at tnsi.
Which team or department does the Jr C/C++ Developer at tnsi belong to?
This Jr C/C++ Developer position is part of the C_001 Transaction Network Services, Inc. department at tnsi. See the full job description for more information about the team structure and responsibilities.
How do I apply for the Jr C/C++ Developer position at tnsi?
Click the "Apply Now" button on this page. You will be redirected to tnsi's official application portal hosted on workday where you can submit your application directly.
When was the Jr C/C++ Developer job at tnsi posted?
This Jr C/C++ Developer position at tnsi was posted on Jun 23, 2026. Apply as soon as possible — early applications are often reviewed first.
Jr C/C++ Developer
tnsi
You'll be redirected to tnsi's official application page on Workday.