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Senior Real-Time Linux Developer

Transaction Network Services (TNS)
Lodz, POL Posted Sep 28, 2026
Hybrid

About this role

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

POL - Lodz Full time Posted Today R2800

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.

  • About Us

  • With employees based in 21 countries around the world, TNS is a leading global provider of data communication and interoperability services to diverse industries, such as retail, banking, payment processing, telecommunications and the financial markets.

  • TNS’ services extend to over 60 countries and we deliver mission critical solutions to many Fortune 500 companies. TNS employees play a vital role in the delivery of our services and we recognize them as our most valuable asset. We are proud to offer competitive salaries and benefit packages, and due to the global nature of our business we can offer opportunities to relocate to different locations, if your personal circumstances change.

  • Please take the time to view the job openings on this website and submit an application. You are welcome to apply for multiple opportunities and our system is designed to keep you informed on your application status.

  • What’s the next step in your career? Find out today!

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