Transaction Network Services (TNS) Tech Stack

Mission-critical infrastructure for financial, telecom, and payments networks

Telecommunications Reston, Virginia 1,001–5,000 employees Founded 1990 Privately Held

TNS operates a 30-year-old IaaS platform serving financial institutions, telecom providers, and payment processors across 60+ countries. The stack is heavily Java/Oracle/Unix-based (JBoss, WebSphere, Tomcat), now actively adopting OpenStack, 5G, and multi-cloud platforms (AWS, Azure, GCP) while replacing legacy Java frameworks and PostgreSQL — indicating a shift from monolithic on-prem infrastructure toward distributed, cloud-native architectures. Engineering-led hiring (146 of 344 open roles) focused at senior and mid levels reflects the scale of this migration.

Tech Stack 200 technologies

Core StackJava Oracle PL/SQL Maven Jira Confluence C++ Linux JavaScript JDBC Unix Tomcat JBoss WebSphere Git Spring MVC Spring Boot C Solaris SIP TCP UDP TLS DTLS Boost gdb valgrind HTML CSS JSP+170 more

AdoptingAWS OpenStack 5G Azure GCP Spring MVC GoldenGate

ReplacingAWS PostgreSQL Azure GCP Struts+3 more

What Transaction Network Services (TNS) Is Building

◆Challenges

Implementation compliance integration challenges
Integration with private cloud
Incident response
Transitioning from traditional to ip-based network infrastructure
Integrating services into cloud environments
Expanding payment market reach
Migration to public cloud platforms
High volume multi-terabyte databases
Meeting partner-sourced revenue targets
Performance tuning and capacity planning

▲Active Projects

Design and deployment of services within a global managed service provider ip/mpls network
Partner program framework launch
Multi-cloud roadmap development
Vendor evaluation and customization
Pop and data center end-state optimization plan
Customer portal account setup
Automation and orchestration of services
Netdevops transformation
Partner business plan development
Partner event organization

Hiring Activity

Accelerating340 roles · 160 in 30d

Department

Engineering

146

Sales

Product

Support

Ops

Finance

Security

Marketing

Seniority

Senior

178

Mid

Manager

Principal

Lead

Junior

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About Transaction Network Services (TNS)

TNS is a global IaaS provider delivering connectivity, transaction processing, and managed hosting services to financial markets, communications carriers, and payment networks. The company operates point-of-sale systems, ATM networks, roaming SIM infrastructure, and core telecom switching solutions across more than 1,000 customer organizations. Founded in 1990 and acquired by Koch Industries in 2021, TNS maintains a distributed engineering footprint across 13 countries. Current operational priorities center on migrating legacy IP/MPLS network infrastructure to cloud platforms, building multi-cloud deployment automation, optimizing global data center footprint, and scaling partner-driven revenue channels.

HeadquartersReston, Virginia

Company Size1,001–5,000 employees

Founded1990

Hiring MarketsIndia, Australia, Malaysia, Japan, United States, United Kingdom, Italy, Brazil

Frequently Asked Questions

What tech stack does Transaction Network Services use?

Primary stack: Java, Oracle, Unix/Linux, Tomcat, JBoss, WebSphere, SIP, with supporting tools like Maven, Spring Boot, Git, and PL/SQL. Adopting OpenStack, AWS, Azure, GCP, and 5G technologies.

What is Transaction Network Services working on?

Multi-cloud migration and infrastructure modernization, including IP/MPLS network redesign, partner program framework, NetDevOps transformation, automation/orchestration, and data center optimization.