Jan 2021 – Sep 2022 · 1 yr 8 mos · Bangaluru

• Site Reliability Engineering , G-rpc , Gremlin [ chaos], Tensor flow Serving , Http/2 , distrubuted tracing : jeager . Multi DC for Redis , Kafka. Fail Over.
• Micro Service with Java development
• Payment Network : Scaling, Performance Engg , Chaos , Security , Reliability , High Availability.
• E-Commerce Retail domain : Scaling , Performance Engg , Chaos , Security , Reliability , High Availability
• Istio , Open tracing , kafka , Envoy , zipkin , redis , hazel crest , knative, Rancher , Openshift.
• Portworx. Scaling up to 1000 --> 4000--->8000 TPS , Largest Bank Card Industry in the world
• Reliability:
• Handling Timeouts Between Microservices
• Handling Failures With Circuit Breakers
• Simulating Failures Between Microservices
• Observability:
• Prometheous , Grafana, Open Tracing , Weave Scope, canary deployment
• Cloud: GCP | AWS | AZURE.

Apr 2019 – Aug 2023 · 4 yrs 4 mos · India

• Client : Telecom Recharges ( 300 + crores per day revenue) Bank: Payment Gateway NextGen : Building scalabale distributed , Reliable , Resilient , Security vault , cloud based microservice , capacity planning. Canary Deployment , Open tracing , Consul . Prometheous , Grafana , Dynatrace . Spring boot Actuator
• Create Devsecops Pipeline for Largest Bank : { Cloubees Flow [ Code Quality - sonarqube , SAST -Checkmarx , DAST-Netsparker kryptowire , tenable , IAC: Terrascan, Prod: RASP,WAF }
• Azure Devops : Azure Pipeline , repos , Azure data bricks , Azure Data flow , Azure ML , Azure Synapse, Azure Data Lake
• Cyber Security : Sentinel , OWASP , CERT-US - ALERTS , CompTIA Security , CISSP - CERTIFIED INFORMATION SYSTEMS SECURITY PROFESSIONAL ,MITRE ATT&CK
• OPA : Dynamic Authorization (ABAC/PBAC) .
• Styra DAS or any PDPs or PAPs . Styra**
• Payment Network : Scaling, Performance Engg , Chaos , Security , Reliability , High Availability.
• Micro Service with Java .
• Cloud Security / Container Security : Twist lock , Fortify , red lock , Cortex XDR , Kubernetes Admission Control , aquasec ,sentinel, VAULT
• Cloudbees CI and CDD.
• Azure Data bricks , Azure Data Flow , Azure Data Factory , Jenkins , Bit bucket.
• Data as code : Data Pipeline | Apache Airflow | Kubeflow | AWS EMR | PrestoDB .
• Client : Largest Retail domain customer : Building Micro service based E-commerce cloud based platform .
• Site Reliability Engineering , G-rpc , Gremlin [ chaos], Tensor flow Serving , Http/2 , distrubuted tracing : jeager . Multi DC for Redis , Kafka. Fail Over.
• Istio , Open tracing , kafka , Envoy , zipkin , redis , hazel crest , knative, Rancher , Openshift.
• Portworx. Scaling up to 1000 --> 4000--->8000 TPS , Largest Bank Card Industry in the world
• Reliability:
• Handling Timeouts Between Microservices
• Handling Failures With Circuit Breakers
• Simulating Failures Between Microservices
• Observability:
• Prometheous , Grafana, Open Tracing ,canary deployment
• Cloud: GCP | AWS | AZURE.

Apr 2019 – Jan 2021 · 1 yr 9 mos · Bengaluru Area, India

• Observability, Resiliency Engineering, Reliability , Chaos engineering
• Gremlin , dynatrace , Chaos
• Micro Service with Java development
• Cloud : User experience, solve customer problems. Result oriented , proven track record.
• Hadoop . Azure Machine Learning Studio for Big Data Processing any Domain .
• Dyntrace / Appdynamics : Thread Dump | Heap Dump | GC | Analysis
• Capacity Planning : NODE Capacity | Horizontal and Vertical Scaling .
• Jaeger: open source, end-to-end distributed tracing
• Alert and Monitoring : Grafana and Prometheus
• Kubernates Administrator | Rancher is a complete software stack . security challenges of managing multiple Kubernetes clusters across any infrastructure, while providing DevOps teams .
• ML & AI: kubeflow
• GCP: Big Table | Protobuf| Big Query | Stack driver | Data Flow | SPanner| Kubernate Engine|
• OpenShift | OpenStack | Hybrid Cloud | SAAS | PAAS| Micro Service
• Chaos Monkey | Resilency Testing | kubeflow| kubernate| Microservice Testing | Kafka Test Automation| Zookeeper| Solr search -- Spring Test
• Spring boot test framework | Wiremock | Rest Assured | Pact | Contract Testing | Mockito.
• C# | Rest Sharp | Newtonsoft.json | 4000 API TEST Automation framework | NUNIT . node. js, javascript, cucumber, webdriverio, mocha jasmin, chai. Angular.js,react,js,node,js | Testops|Runops. | Micro Services based architecture, patterns and design | containerization technologies like Docker and Kubernetes | Hadoop, Cassandra, Spark, MongoDB etc. | Gitlab with CI/CD for Azure| Google Cloud with Gitlab and Rundeck|
• Devops: kubernates | ANSIBLE Configuration--Playbook | docker | Virtualization | YAML | Tower | docker | Azure API Management | UI | API | Big Data | IOT | Jenkins Pipe Line | kubernate | Chef | Terraform | kafka | splunk | elastic search | grafana | Apigee| Reporting with Allure | Nodejs | Cucumber | Javascript | Spring Test Framework | Mockito | Wiremock | ReadyApi |
• manirulhalder@gmail.com

Dec 2017 – Feb 2019 · 1 yr 2 mos · Bengaluru, Karnataka, India · Hybrid

Dec 2016 – Nov 2017 · 11 mos · Bangalore

• Health Care Domain, Travel Domain. Hadoop Configuration , HDFS , Map-reduce , CDH 5 ,Spark, Elastic Search.
• SRE for E-Commerce Application . Elastic Search with Hadoop and Kibana.
• Geb/Spock / Groovy /Intellij .
• Micro Service with Java development
• Technology: Angular.js / Web Service: SOAP / REST API , Web API , WPF/WCF, DB: SQL Server.
• Doing Performance Testing and Monitoring of Product . Also Using App Dynamics monitoring Tool ,Fiddler Tool. Security Testing. REST API Automation using Rest Assured framework.
• Performance Engineer (DevOps). Selenium with JAVA. Python with Robot Framework.
• HP LoadRunner & ALM (Performance Center) ,Jmeter and Gatling Protocol : Web(HTTP/HTML) , Ajax Truclient, Citrix, .Net Programming Language : Core Java, C#, Scala Working Experience in CI/CD for performance testing Others: Dev Tools, Network Sniffer , Fiddler or wireshark

Dec 2012 – Nov 2016 · 3 yrs 11 mos · Bangalore

• SRE : Scalability , Observability , Resiliency , Performance Engg , Availability ,Security
• Micro Service with Java development
•  Ant, shell, Maven, Jenkins, Bamboo, Perl,Python,Ruby ,Cucumber Tool , Seleniunm
• RFP
• IOS 9 Upgrade: DevOps , AWS ( Cloud), IBM Cloud Language : SWIFT, Android SDK 2.2
• Big Data/ Hadoop Testing Using Python 2.7.12
• Micro Service with Java development
• Performance : Load Runner and Jmeter , Cloud Performance testing, HP Performance Center 12 with Cloud Testing.
• Performance Monitoring Tool: JProfiler,Dynatrace, AppDynamics and Foglight , Rational Test Workbench(IBM)
• Build Script for Mobile Automation.
• Mobile Automation: Xamarin, Perfecto, APPIUM,RTW,Robotium,Selendroid.
• Telecom Charging, Billing, Diameter, PCRF,PCEF / VAS / Diameter(Gy/Gx/Ro) --Lte(EPC)/PCRF/PCEF( SASN/SAPC)/3GPP/Charging Solution. TIBCO BW Active Matrix/ vedio conferencing. Software Testing: Manual / JMETER ( Performance & Load Testing) .
• Expertise:
•  Prepaid/Postpaid Billing Software Testing
•  Mediation, Rating & Charging Application Testing
•  Interconnect Billing
•  Working knowledge of VOIP, GSM, IN Call flows
•  Protocols known - SIP, SDP,DIAMETER, LDAP,SOAP
•  Automation framework using JMeter,Load Runner,Illuminator,APPIUM,Tuneup
•  Scripting language – PERL,JAVA Script,Ruby, Shell
•  Knowledge of Network Sniffing Tools - Wireshark,
•  Knowledge of Defect Tracking Tools - HP ALM 12.01, Bugzilla,HP ALM.
•  Knowledge of Database/Tools - Oracle 10g, PL/SQL, MySQL, SQL developer, TOAD
•  Operating systems – AIX Unix, Linux, Sun Solaris, Windows,MAC

Dec 2011 – Nov 2012 · 11 mos · Greater Kolkata Area

• Mobile Automation/Telecom Charging, Billing, Diameter, PCRF,PCEF / VAS / Diameter(Gy/Gx/Ro) --Lte(EPC)/PCRF/PCEF( SASN/SAPC)/3GPP/Charging Solution. TIBCO BW Active Matrix/ vedio conferencing. Software Testing: Manual / JMETER ( Performance & Load Testing) .
• SRE | DEVOPS | CLOUD.
• Micro Service with Java development
• Expertise:
•  Prepaid/Postpaid Billing Software Testing
•  Mediation, Rating & Charging Application Testing
•  Interconnect Billing
•  Working knowledge of VOIP, GSM, IN Call flows
•  Protocols known - SIP, SDP,DIAMETER, LDAP,SOAP
•  Automation framework using JMeter,Load Runner,Illuminator,APPIUM,Tuneup
•  Scripting language – PERL,JAVA Script,Ruby, Shell
•  Knowledge of Network Sniffing Tools - Wireshark,
•  Knowledge of Defect Tracking Tools - HP ALM 12.01, Bugzilla,HP ALM.
•  Knowledge of Database/Tools - Oracle 10g, PL/SQL, MySQL, SQL developer, TOAD
•  Operating systems – AIX Unix, Linux, Sun Solaris, Windows,MAC

Sep 2008 – Aug 2011 · 2 yrs 11 mos

• Managed Service : DEVOPS | SRE | VAS Engineer ( Telecom-- CDMA & GSM)
• Messaging ( MMSC, WAP Gateway , OTA server, PRBT/CRBT,SASN MIS/Policy Control(SASN/SAPC)).
• Micro Service with Java development
• Skill-- Unix, Solaris , SS7. Linux , Solaris, DEVOPS | SRE