Transaction Network Services logo

Senior Real-Time Linux Developer

Transaction Network Services

Hybrid
Lodz, Poland
Full-time
Senior
5+ yrs
Salary not listedPosted 1mo ago

Real job — pulled straight from Transaction Network Services’s careers page · Verified July 11, 2026 · No reposts.

Job description

Transaction Network Services is hiring a Senior Real-Time Linux Developer — a full-time, based in Lodz, Poland role. Apply directly on Transaction Network Services's careers page below.

Senior Real-Time Linux Developer (C / C++ / FPGA SmartNIC Integration)

Location: POL - Lodz

Time Type: Full time

Job Description

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

We are assembling a small, agile team to develop innovative network monitoring products for real-time financial data networks. As a Senior Real-Time Linux Developer, you will work closely with hardware engineers and front-end developers to build high-performance systems that interface with custom FPGA-based SmartNICs. Your work will be central to enabling ultra-low latency, high-throughput data capture and telemetry in latency-sensitive financial environments. You will have a key role in assessing project feasibility and solution design. And you will be the subject matter expert, helping to guide and mentor newer team members.

Responsibilities

Required Qualifications:

  • 5+ years of experience in low-level Linux development using C or C++ in a real-time / embedded environment.

  • Knowledge of networking fundamentals (PHY/MAC, Ethernet, vlans, UDP unicast/multicast, IGMP, TCP, PTP etc.) and linux-based IP networking.

  • Experience interfacing linux with custom hardware devices.

  • Proficient in high-performance programming, performance tuning and system-level debugging.

Preferred Qualifications:

  • Experience with AMD / Solarflare SmartNICs and high-performance network stacks, e.g. ef_vi, solarflare onload.

  • Knowledge of other high-performance networking technologies at layer 1 and above.

  • Knowledge of advanced time synchronization methods (e.g., PTP, White Rabbit).

  • General familiarity with digital design and the FPGA development process.

  • Feasibility analysis and solution design.

Soft Skills:

  • Strong analytical and problem-solving skills.

  • Excellent communication and collaboration abilities.

  • Self-directed and comfortable working in a small, fast-moving, cross-functional team.

  • Ability to guide and mentor more junior team members.

Benefits:

  • Competitive salary and benefits.

  • Hybrid working environment.

  • Gain experience of very high performance real-time financial networks working for a leading global financial technology and services company.

Qualifications

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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Frequently asked questions

What skills are required for Senior Real-Time Linux Developer at Transaction Network Services?

The required skills for Senior Real-Time Linux Developer at Transaction Network Services include: Linux, C, C++, FPGA, Networking, Ethernet, Embedded Systems.

What is the seniority level for Senior Real-Time Linux Developer at Transaction Network Services?

Senior Real-Time Linux Developer at Transaction Network Services is a Senior level position.

How do I apply for Senior Real-Time Linux Developer at Transaction Network Services?

You can view the full description and apply for Senior Real-Time Linux Developer at Transaction Network Services on EchoJobs: https://echojobs.io/job/transaction-network-services-senior-real-time-linux-developer-c-c-fpga-smartnic-integration-wvaan.