Network Engineer

Transaction Network Services Inc

Illinois, IL

JOB DETAILS
SKILLS
Ansible, Apple Macs, Automation, BGP, Communication Skills, Documentation, Git, Global Financial Markets, High Availability, IP (Internet Protocol), Identify Issues, Internet Group Multicast Protocol (IGMP), Link Aggregation Control Protocol (LACP), Multicast, NAT (Network Address Translation), Network Architecture/Engineering, Network Routing, Network Support, Network Switching, Open Shortest Path First Protocol (OSPF), Operations Processes, Presentation/Verbal Skills, Production Systems, Protocol Independent Multicast (PIM), Source Code/Configuration Management (SCM), Stock Market, VLAN (Virtual Local Area Network), Writing Skills
LOCATION
Illinois, IL
POSTED
30+ days ago

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

Transaction Network Services (TNS)

An extraordinarily talented group of individuals work together every day to drive TNS' success. We provide mission‑critical connectivity solutions to the global financial markets, enabling firms to access exchanges, market data, and counterparties with high availability and operational excellence.

OVERVIEW

We are seeking a Network Engineer to join our Financial Markets Network Engineering team. This role supports real‑time trading and market data connectivity across highly available global networks. The position provides strong exposure to routing, switching, multicast, automation, and packet‑level troubleshooting in production trading environments.

Responsibilities

RESPONSIBILITIES

  • Support add/move/change (MAC) activities across production financial‑markets networks

  • Configure and troubleshoot Layer‑2 and Layer‑3 network services

  • Assist with BGP, OSPF, and IS‑IS routing changes and troubleshooting

  • Support NAT configuration and fault isolation (static and dynamic NAT)

  • Assist with IP multicast (IGMP, PIM) used for market data distribution

  • Perform packet capture and traffic analysis (tcpdump, Wireshark or equivalent)

  • Assist with Layer‑1 troubleshooting including physical connectivity and latency‑sensitive paths

  • Follow disciplined change, documentation, and operational processes

  • Work with senior engineers on automation‑enabled configuration and validation

  • For this role, we anticipate paying $90,000K-$100,000K annually. Any compensation range provided for a role is an estimate determined by available market data. The actual amount may be higher or lower than the range provided considering each candidate's knowledge, skills, abilities, and geographic location. TNS offers a competitive benefit package including medical and dental coverage, life insurance, paid holidays and vacations, and a 401K plan with company match.

NETDEVOPS & AUTOMATION

  • Exposure to network‑as‑code practices using structured data (JSON/YAML)

  • Assist with templated configuration and automation workflows (e.g., Jinja2, Ansible)

  • Follow Git‑based version control and peer‑review workflows for network changes

Qualifications

REQUIRED SKILLS & EXPERIENCE

  • 3+ years of experience supporting global IP networks

  • Hands‑on experience with Cisco, Juniper, and Arista platforms

  • Strong Layer‑2 knowledge (VLANs, trunking, STP, LACP)

  • Strong Layer‑3 fundamentals (BGP basics, OSPF/IS‑IS concepts)

  • NAT fundamentals and troubleshooting experience

  • Multicast fundamentals (IGMP, PIM)

  • Packet capture and analysis skills

  • Strong written and verbal communication skills

CERTIFICATIONS

  • CCNA or CCNP

  • NCIA or JNCIP

TNS is an equal opportunity employer.

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 the Company

T

Transaction Network Services Inc

Transaction Network Services (TNS) has been delivering industry-leading solutions for the payments, financial and telecommunications industries since 1990. TNS is the preferred supplier of networking, integrated data and voice services to many leading organizations in the global payments and financial communities, as well as a provider of extensive telecommunications network solutions to service providers.

TNS is a New York Stock Exchange (NYSE: TNS) listed company with a healthy balance sheet, secure assets and a loyal customer base that includes some of the largest global blue-chip companies in the world. Many of the world’s leading companies continue to count on TNS as their primary provider of a range of networking and communication services, enabling them to expand regionally, nationally and globally. TNS provides services to customers in over 60 countries throughout the world.

COMPANY SIZE
1,500 to 1,999 employees
INDUSTRY
Telecommunications Services
FOUNDED
1990