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Christopher Riddell Email & Phone Number

Senior Processing Development Engineer at Transaction Network Services
Location: Ware, England, United Kingdom 4 work roles 2 schools
1 work email found @tnsi.com 2 phones found area 788 LinkedIn matched
✓ Verified July 2026 4 data sources Profile completeness 100%

Contact Signals · 1 work email · 2 phones

Work email c****@tnsi.com
Direct phone (788) ***-****
LinkedIn Profile matched
3 free lookups remaining · No credit card
Current company
Transaction Network Services
Role
Senior Processing Development Engineer
Location
Ware, England, United Kingdom
Company size
1337 employees

Who is Christopher Riddell? Overview

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Quick answer

Christopher Riddell is listed as Senior Processing Development Engineer at Transaction Network Services, a with 1337 employees, based in Ware, England, United Kingdom. AeroLeads shows a work email signal at tnsi.com, phone signal with area code 788, and a matched LinkedIn profile for Christopher Riddell.

Christopher Riddell previously worked as Test Manager (Online Specialist) at Paypoint Plc and Technical Support Analyst at Transaction Network Services. Christopher Riddell holds Btec National Diploma In Computer Studies from Herts Regional College (Turnford).

Company email context

Email format at Transaction Network Services

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{first_initial}{last}@tnsi.com
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AeroLeads found 1 current-domain work email signal for Christopher Riddell. Compare company email patterns before reaching out.

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Profile bio

About Christopher Riddell

Highly experienced in building, configuring & implementing mission critical bespoke payments platformsSpecialist in Postilion Payments software (ISO 8583) gained through testing and supporting the product for over 20 yearsProfessional Software Tester experienced in all testing levels (including Functional, Non-Functional, System, Integration, UAT, OAT & Regression testing)Experience of both Iterative (Agile) & Sequential (Waterfall) Software Development LifecyclesHolder of ISEB (ISTQB) Foundation, Intermediate and Practitioner (Test Management) Certificates in Software TestingDesigning/Executing Functional & Stress tests using Iliad T3 V7 & T3 Switch Test toolTrack record includes 20 years experience of 24x7, real time transaction processing in the payments industry (Card Payments, ATM, POS, Mobile Phone E-Topup real-time transaction processing)Strong operational experience gained through Data Centre, software installation and support experienceOver 18 years experience working in a Windows & Microsoft SQL Server Environment. Excellent experience of Microsoft Office Suite (Word, Excel, Outlook and PowerPoint)Experience of configuring, testing and supporting NCR Authentic software18 months experience in configuring, testing & implementing Lusis Tango platformsLinux and MYSQL experience

Listed skills include Testing, Test Planning, Test Management, Microsoft Sql Server, and 19 others.

Current workplace

Christopher Riddell's current company

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Transaction Network Services
Transaction Network Services
Senior Processing Development Engineer
reston, virginia, united states
Website
tnsi.com
Employees
1337
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4 roles · 33 years

Christopher Riddell work experience

A career timeline built from the work history available for this profile.

Senior Processing Development Engineer

Current
Transaction Network Services

Welwyn Garden City

In my current role as Senior Processing Development Engineer I am responsible for the following:Building/Configuring/Testing/Implementing/Supporting new payments platforms (Postilion, Postilion Office, Config Server, PosConnect, Card Payments, ATM, POS, Authentic, Lusis Tango, P2PE). Ensuring smooth delivery of new releases from Development into the Production environment.Analysis and design of technical solutions based on user requirements. Technical ownership of end-to-end solutions.Coordinating internal technical staff and external contractors/suppliers on projects when acting as a technical lead.Responsible for providing estimates for new project work to Account Managers/Senior Management for submission to customer.Ensuring technical solutions meet all appropriate compliance and security mandates such as PCI-DSS in order to protect cardholder data.Writing release documentation to accompany software releases for use by operational staff. Assisting operational staff with installations into the production environment.

Oct 2014 - Present

Test Manager (Online Specialist)

Paypoint Plc

Welwyn Garden City

Responsible for testing all Postilion releases and ensuring that all new software is ‘fit for purpose’ for the production environment. Experienced in Postilion Realtime (v5.3 sp2), Apacs40, Apacs30, TermApp.ISO, TermApp.Apacs70, ATM, Postilion Office and Patch testing.Responsible for baselining & maintaining software on test environments to ensure synchronicity with production systems.Defining test strategy, writing test plans, test cases, test scripts and acceptance criteria. Selecting suitable test techniques and determining entry & exit criteria. Collating all test results and output data and writing up test summary reports.Writing installation instructions to accompany Software releases for use by operational staff. Assisting operational staff with installations into the production environment.

Jul 2004 - Oct 2013

Technical Support Analyst

Transaction Network Services

Welwyn Garden City

My key responsibilities included: 1st level problem solving, dealing with queries from high profile customers and providing out of hours support on a 1 in 3 week rota. Experienced in investigating and analyzing Windows event log errors and SQL Server logs.

2000 - 2003 ~3 yrs

Operations Shift Leader

Arrow Electronics

Harlow

Formerly employed as Shift Leader of a team of three, my role included: 1st level problem solving such as fixing and amending program failures. I was responsible for call out and recovery procedures in addition to crucial decision making.

1994 - 2000 ~6 yrs
Team & coworkers

Colleagues at Transaction Network Services

Other employees you can reach at tnsi.com. View company contacts for 1337 employees →

JT John Tully John Tully Colleague at Transaction Network ServicesClarks Summit, Pennsylvania, United States View → SJ Satyabrata Jena Satyabrata Jena Colleague at Transaction Network ServicesCuttack, Odisha, India View → AA Ashaq Ahmad Ashaq Ahmad Colleague at Transaction Network ServicesLucknow, Uttar Pradesh, India View → BS Blake Smith Blake Smith Colleague at Transaction Network ServicesOlympia, Washington, United States View → RS Russ Stallone Jr. Russ Stallone Jr. Colleague at Transaction Network ServicesNew Port Richey, Florida, United States View → AO Atsushi Okuno Atsushi Okuno Colleague at Transaction Network ServicesJapan View → RM Rahul Moryelster Rahul Moryelster Colleague at Transaction Network ServicesTanzania, United Republic Of View → NK Nisha K Nuri Nisha K Nuri Colleague at Transaction Network ServicesGhaziabad, Uttar Pradesh, India View → DG Dave Giambra Dave Giambra Colleague at Transaction Network ServicesPort Richey, Florida, United States View → LE Loren Engstrom Loren Engstrom Colleague at Transaction Network ServicesRockville, Maryland, United States View →
2 education records

Christopher Riddell education

Btec National Diploma In Computer Studies

Herts Regional College (Turnford)

English

Richard Hale (Hertford)
FAQ

Frequently asked questions about Christopher Riddell

Quick answers generated from the profile data available on this page.

What company does Christopher Riddell work for?

Christopher Riddell works for Transaction Network Services.

What is Christopher Riddell's role at Transaction Network Services?

Christopher Riddell is listed as Senior Processing Development Engineer at Transaction Network Services.

What is Christopher Riddell's email address?

AeroLeads has found 1 work email signal at @tnsi.com for Christopher Riddell at Transaction Network Services.

What is Christopher Riddell's phone number?

AeroLeads has found 2 phone signal(s) with area code 788 for Christopher Riddell at Transaction Network Services.

Where is Christopher Riddell based?

Christopher Riddell is based in Ware, England, United Kingdom while working with Transaction Network Services.

What companies has Christopher Riddell worked for?

Christopher Riddell has worked for Transaction Network Services, Paypoint Plc, and Arrow Electronics.

Who are Christopher Riddell's colleagues at Transaction Network Services?

Christopher Riddell's colleagues at Transaction Network Services include John Tully, Satyabrata Jena, Ashaq Ahmad, Blake Smith, and Russ Stallone Jr..

How can I contact Christopher Riddell?

You can use AeroLeads to view verified contact signals for Christopher Riddell at Transaction Network Services, including work email, phone, and LinkedIn data when available.

What schools did Christopher Riddell attend?

Christopher Riddell holds Btec National Diploma In Computer Studies from Herts Regional College (Turnford).

What skills is Christopher Riddell known for?

Christopher Riddell is listed with skills including Testing, Test Planning, Test Management, Microsoft Sql Server, Integration, Iso8583, Agile Methodologies, and Payments.

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