Harish Kumar

Software Engineer

Dublin, County Dublin, Ireland22 yrs 9 mos experience

Most Likely To SwitchHighly Stable

Key Highlights

20+ years of experience in architecture and engineering.
Expert in building scalable, secure platforms across industries.
Hands-on leadership in high-pressure, delivery-critical contexts.

Stackforce AI infers this person is a Fintech and Cloud Infrastructure Architect with extensive experience in scalable systems.

Contact

Skills

Core Skills

KubernetesDevopsOpenstackHealthcare ItTechnical Leadership

Other Skills

Software ArchitectureAmazon Web Services (AWS)Software DevelopmentContinuous Integration and Continuous Delivery (CI/CD)NomadmicroservicesApplication ArchitectureGo (Programming Language)System ArchitectureTerraformDistributed SystemsLinuxCloud InfrastructureCI/CDAnsible

About

I'm a Principal Architect with 20+ years of experience designing secure, scalable platforms across finance, telecom, and healthcare. My career began in systems and network operations, evolving into large-scale system and application architecture. While driving the overall architectural vision, I remain deeply hands-on — contributing to architecture spikes, system and application design, hands-on development, infrastructure automation, and DevOps engineering — particularly in high-pressure, delivery-critical contexts. I actively incorporate AI-powered tools like ChatGPT and GitHub Copilot to accelerate design iteration, reduce engineering overhead, and boost quality. My engineering philosophy is grounded in simplicity, clarity, and resilience. I enjoy building platforms that scale cleanly, operate reliably, and meet the complexity of real-world needs. If you’re working on ambitious systems at the edge of fintech, infrastructure, or distributed platforms — I’d love to connect.

Experience

22 yrs 9 mos

Total Experience

3 yrs 3 mos

Average Tenure

9 yrs 1 mo

Current Experience

Mastercard

3 roles

Senior Principal Software Engineer

Promoted

Oct 2025 – Present · 8 mos

Principal Software Engineer

Promoted

Oct 2019 – Oct 2025 · 6 yrs

Leading the design and architecture a next-generation edge transaction platform that is designed for global scale.
🧠 Initiated and built the first working proof-of-concept single-handedly, gaining leadership buy-in and driving the platform from inception to current engineering lead role
⚙️ Leading engineering execution across all dimensions: architecture, development, cloud infrastructure, CI/CD, deployment, security, testing, and compliance
🌍 Designed the system for global-scale, hybrid deployments, across major cloud platforms and customer-hosted environments
🏗️ Architected a Kubernetes-based, single-tenant deployment model at global scale
🚦 Designed a fleet management and orchestration system (in progress) to enable safe, progressive deployments using custom blue-green rollouts, batch-based canary analysis, and automated rollback for failure recovery
🔐 Built PoC on end to end integrated, automated system that completely integrate a zero-trust, automated infrastructure, application deployment setup
🛡️ Led end-to-end delivery of a critical regulatory compliance system within 6 weeks for a country-wide urgent rollout — owned the design from the start, actively collaborated with developers, testers, and DevOps teams to ensure smooth development, testing, build, and deployment under tight deadlines
🤝 Worked with Distinguished Engineers across enterprise architecture to ensure long-term technical alignment and platform quality
⚡ Previously led infrastructure automation initiatives — reduced provisioning time from months to minutes by building self-service cloud infrastructure tooling

DevOpsKubernetesTechnical LeadershipSoftware ArchitectureAmazon Web Services (AWS)Software Development+9

Principal Software Engineer

May 2017 – Oct 2019 · 2 yrs 5 mos

Driving Mastercard’s journey to a cloud-native, DevOps-powered future by architecting scalable automation, CI/CD pipelines, and modern platform deployments across global infrastructure and hybrid environments.
🚀 Developed Concourse CI pipelines for seamless deployment and operations on Pivotal Cloud Foundry (PCF)
⚙️ Designed and managed BOSH release deployments and lifecycle management for platform applications
🧪 Built Kubernetes clusters with optional Istio service mesh for enhanced traffic control and security in microservices architecture
🔄 Architected a service broker framework to modernize shared service consumption via scalable, service broker-based patterns
🎯 Built push-button CI/CD pipelines integrating Jenkins, JFrog Artifactory, SonarQube, and PCF — standardizing app onboarding through YAML-based declarative configuration files
🤖 Built infrastructure automation across on-premises data center environments

DevOpsKubernetesTechnical LeadershipAnsibleSoftware ArchitectureAmazon Web Services (AWS)+4

Juniper networks

Staff Software Engineer, Contrail

Nov 2015 – May 2017 · 1 yr 6 mos · Bangalore

Driving automation and cloud-native integration for Juniper’s Contrail SDN platform, enhancing deployment efficiency and scalability across multiple environments including OpenStack, Kubernetes, and OpenShift.
⚙️ Improved Contrail Cloud platform deployments with OpenStack, Contrail, and Ceph integration
🚀 Integrated Rally framework for performance benchmarking and testing
🧪 Productized contrail-test, the core testing tool for Contrail SDN
🐳 Containerized Contrail Cloud with a portable, pluggable build and deployment system
📦 Developed Helm charts and integrated Contrail services with Kubernetes for streamlined deployments

DevOpsKubernetesTechnical LeadershipAnsibleSoftware ArchitectureSoftware Development+3

Reliance jio infocomm

Devops Architect, Cloud devops

Nov 2013 – Nov 2015 · 2 yrs · Mumbai Area, India

Helped build Reliance Jio Infocomm’s large-scale public cloud platform (IaaS, PaaS, SaaS) using OpenStack and advanced cloud technologies at this RIL startup.
🚀 Designed and led implementation of a 60-node OpenStack public cloud PoC, covering network/server architecture, automation, and deployment
⚙️ Integrated ZeroMQ messaging and Ceph storage with OpenStack, managing a large-scale storage system (~4 PB raw capacity)
🔍 Evaluated SDN technologies including Contrail and BigSwitch; implemented Contrail SDN for enhanced network automation
🤖 Developed automated cluster deployment and configuration management using Puppet and built CI/CD pipelines to accelerate delivery
🌐 Delivered large-scale OpenStack public cloud production system supporting 500+ nodes with plans to scale to thousands
📊 Partnered with product management and cloud architects on IaaS/PaaS product design, capacity planning, monitoring, and performance management

DevOpsKubernetesTechnical LeadershipAnsibleSoftware ArchitectureSoftware Development+3

Mphrx (my personal health records express)

System Architect

Mar 2011 – Nov 2013 · 2 yrs 8 mos · Gurgaon, India

One of the earliest employees (5th hire) at MphRx, I led the ground-up architecture and implementation of a HIPAA-compliant, dual-datacenter cloud platform powering SaaS for medical imaging and lab reporting. Built and scaled core infrastructure from scratch in a startup environment, balancing speed with compliance, automation, and long-term maintainability.
🏗️ Designed and built the entire infrastructure stack — from network layout to storage, compute, HA/load balancing, and disaster recovery — fully compliant with HIPAA and aligned with BCP goals.
💾 Engineered clustered storage (500TB GlusterFS with remote replication), sharded MongoDB, Oracle, and MySQL clusters to support high-throughput data archiving and auditability.
🔒 Led HIPAA security implementation, integrating tools like OSSIM, OSSEC, Snort, OpenVAS, and policy automation for third-party compliance readiness.
⚙️ Developed configuration and provisioning tools; migrated infra from cfengine to Puppet, enabling scalable OpenStack automation and better system reproducibility.
🖥️ Deployed private cloud infrastructure using OpenStack (KVM in production, LXC in dev), replacing VMware ESXi and standardizing VM orchestration.
📞 Built a fully custom, HIPAA-compliant fax and data integration solution using open-source components.
🩺 Integrated HL7 and PACS systems to enable healthcare interoperability at scale.
👥 Mentored new hires and scaled the engineering team, transitioning from a solo effort to an operational team model.

DevOpsTechnical Leadership

Apollo health street

Lead Technical Analyst

Mar 2007 – Mar 2011 · 4 yrs · New Delhi Area, India

Early-career Platform Engineer and Technical Lead with hands-on experience designing scalable datacenter infrastructure, managing large storage environments, leading engineering teams, and building automation tools to improve reliability and operational efficiency. Recognized for strong technical leadership and impactful contributions.
🏢 Designed and implemented platform infrastructure for new customer datacenter setups
👥 Led and managed a skilled platform engineering team and customer projects
🔍 Developed distributed Nagios monitoring integrated with LDAP, reducing downtime and improving capacity/performance visibility
⚙️ Built automation tools (CLI and web) to reduce human errors and boost productivity
💾 Managed 200+ NetApp filers in SAN/NAS environments with SnapMirror disaster recovery
🖥️ Evaluated and tested hardware/software solutions including VMware ESXi, SLES, HP SIM, and Dell OpenManage
🏅 Earned multiple promotions and an “Accountability Award” recognizing leadership and performance

Technical Leadership

Nextag

NOC engineer

Apr 2006 – Mar 2007 · 11 mos

Responsible for monitoring and maintaining high-volume production servers and storage infrastructure across multiple datacenters. Improved system reliability and performance visibility through enhanced monitoring solutions and proactive capacity planning.
🖥️ Maintained production servers including Apache, Tomcat, MySQL, Solaris, Oracle, and NetApp storage
📊 Implemented distributed Nagios monitoring infrastructure to improve monitoring quality and reduce downtime
📈 Provided performance and capacity trend data used for proactive capacity planning
🌐 Managed multi-datacenter, load-balanced high-volume server environments

Focuz infotech, cochin

System Administrator

Aug 2003 – Mar 2006 · 2 yrs 7 mos · Kerala, India

Built and maintained critical infrastructure for a diverse technology environment, managing storage systems, server deployments, and high availability solutions to support business operations and media rendering workflows.
💾 Implemented and maintained NetApp FAS 270c storage systems and handled data migration for email, database, and web servers
🖥️ Led infrastructure projects including setup of Maya render farm, email, web, and database servers
🔧 Deployed and managed high availability clusters across IBM P-series, IBM X-series, HP Proliant servers, and IBM DS4000 storage