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NLB Services

Mainframe System Programmer

Remote

United kingdom

Freelance

05-01-2026

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Skills

Communication Problem-solving Networking TCP/IP

Job Specifications

JOB DETAILS:

Role: Mainframe Network Engineer

Location: UK (Remote)

Type of Hiring: Contract

Job Description:

Look for A Mainframe System Programmer with network skills designs, installs, maintains, and tunes mainframe systems (like z/OS), focusing heavily on communication protocols (TCP/IP, VTAM) and related software (NetView, FTP, SNMP) to ensure secure, high-performance data exchange between mainframes and other systems, requiring deep knowledge of z/OS, JCL, REXX, problem-solving, and vendor interaction for critical infrastructure.

Responsibilities:

Configuration and administration of IBM z/OS mainframe network software.
Configuration and administration of network related 3rd party system software.
Provision of technical support for Mainframe Networking issues during the normal working day and out of hours on call support.
Act as a Mainframe Networking resource for internal and external projects.
Monitor the performance of mainframe networking components and instigate remedial action.
Production of clear technical documentation as appropriate
Compliance with all local, regional, global and regulatory policies, processes and procedures.

Requirements:

Experienced technician with basic skills in most and more advanced skills in some of the following:
TCP/IP and associated products/protocols
SNA, VTAM, APPN/Enterprise Extender
Connect Direct and other file transfer products
Session Management products eg. TPX, Teleview, CL/Supersession
Network Management products eg. NETVIEW, Netmaster/TCPIP
Print server products eg. VPS
Must be a self-starter, but also a completer/finisher who ensures that tasks/projects are fully completed with the necessary updates to documentation.
Well organized and able to keep a number of activities in progress in parallel, balancing priorities as necessary, in particular between support and project work.
Ability to communicate clearly at all levels while working either individually or as a team player is essential.
Strong English language skills are a requirement for this role.

About the Company

Founded in 2007, NLB Services is one of the fastest-growing global providers of technology and talent solutions. Our comprehensive offerings span Data & AI, Software & Product Engineering, and Cloud, delivering transformative outcomes across industries. With deep domain expertise in Banking & Financial Services, Insurance, Supply Chain & Logistics, Telecom, and Transportation, we help organizations accelerate innovation and growth. Our Learning & Development practice--NLL Academy--empowers clients with agile, future-ready le... Know more