Nicolas Zwierzynski

Nicolas Zwierzynski Email and Phone Number

Technical Lead - Full Stack Java Engineer - Site Reliability Engineering @ Infosys
Nicolas Zwierzynski's Location
Phoenix, Arizona, United States, United States
Nicolas Zwierzynski's Contact Details

Nicolas Zwierzynski work email

Nicolas Zwierzynski personal email

n/a
About Nicolas Zwierzynski

Experience in developing web-based applications using Spring Java, CSS , JAVA 8, Python, Spark, Jenkins, Splunk, Hadoop, SQLExperience in live testing, deployments using APIGEE and Splunk for debugging the error codes. Experience in creating production RFC’s through CI/CD in APIGEE hub , solving incidents, problems and changes in service now/ITSM connect and JIRAUsed Framework like Angular and have knowledge in Spring boot Experience with QA management and certification renewal (BLUECERTS/APIGEE Certs). Experience in SDLC methodology like Agile/Scrum as well : requirement gathering, designing specifications and documenting process flows. Utilized spring boot for various applications in a microservice environment.Expertise:Technologies: HTML, CSS, JAVA 8, Python - Spark, IBM Mainframe, Spring, Angular, Databricks, MS Office SuitesDatabase systems: SQL, MySQL, Couchbase, HiveReporting/Analytical Tools: Apigee, Splunk, ECP ConsoleDevelopment Methodologies: Agile, WaterfallQA: Junit, Selenium, CI/CD Test cases, Confluence Documentation, Swagger UI Domain : Banking – Enterprise SystemsDedicated technical specialist with thorough hands-on experience in all levels of testing, including performance, function, integration, installation, operational, and usability testing. Strong in design and integration problem-solving skills. Proficient in multiple programming languages(C++, Java, SQL query) with strong oral and written communication skills. Result-oriented and enthusiastic team player with agile experience interested in business automation and minimizing user burden. I am eager to bringing technological expertise into a rapidly growing tech environment. Technology is a means to bring convenience and advancement to the daily activities within the modern population. It has advanced our society by saving lives with medical information in the palm of our hands to developing devices like heart monitors in order to extend life for the ones in need. It has created secure business practice, and brought the world closer with instantaneous communication. My position in the world is to bring daily problems to the table, along with figuring out how modern technology can solve them. I seek to expand my experience and bring innovation into a world that depends on technology, and reaching out to clients in regards to easing their life with a certain service or advancement.

Nicolas Zwierzynski's Current Company Details
Infosys

Infosys

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Technical Lead - Full Stack Java Engineer - Site Reliability Engineering
Nicolas Zwierzynski Work Experience Details
  • Infosys
    Site Reliability Engineer
    Infosys Jan 2024 - Present
    Bangalore, Karnataka, In
    Develop code fixes and solutions for problems reported with live code..Calculate SLA and circumvent reported issues before breach limits.Sign off on production deployments and production changes if no errors arise during monitor phase.Revert production deployments incase errors come up.Delegate problems and incidents to EMIM and respective engineers if impact is found.Analyze impact a defect has on current live AMEX production environment.Monitoring ECP end ELF logs to pinpoint alerts within production systems.Network with 350 different applications to provide solutions for issue they are facing.Provide triage for an ongoing application issue during report.Documentation of known issues and timely resolutions.Daily reporting on health ecosystem of Banking Application microservices.
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  • Infosys
    Technical Lead
    Infosys Oct 2022 - Present
    Bangalore, Karnataka, In
    Client: American Express, Phoenix, Arizona as QA Engineer and DeveloperDescription: GEN microservice system encrypts and decrypts active cards for all of AMEXTechnologies used: APIGEE, Splunk, Java, SQL, Couchbase, Mainframe(IBM), QA Automation, Postman, Putty, XLR, Maven, Gradle, ONE DATADevelop java code to convert applications from Maven to Gradle builders.Manage SSL updates on expiring client certificates to avoid disruption of service.Risk Management - Update POM and Gradle files to latest dependencies ensuring no vulnerabilities exist.Documentation for new test cases and application updates.Consultation to production teams as SME, for bugs, incident resolve and certificate renewal.Final sign off authorization for code to merge into live production environment.Performed functional, regression, UAT, post implementation testing with 100% success rate in production.Standardized and developed test cases anytime the application has received an update.Harmonious communication with external partners and providing fast, and reliable tech service.
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  • Infosys
    Gen Qa/Full Stack Engineer
    Infosys Jul 2022 - Present
    Bangalore, Karnataka, In
    Client : American Express, Phoenix, Arizona as Python Data Engineer Description : Cornerstone Dev team - Creating, updating and validating propagation functions for data layer and executing reports for teams that request specific card information.Technology used: Python, Spark, Hadoop, Hive, Java, Spring, Couchbase, Databricks, Quality Assurance, Postman, Putty, SQL (DB2), XLR, LinuxBatch Process DevelopmentDevelop methods and controllers to propagate data flow from DB based on business needs/ compliance.Create python code to directly call Couchbase from WEB UI portal for business partners to access data.Careful usage and extensive storage/encryption of PII sensitive data, to prevent data leaks.Quality Assurance Management:Develop test cases for each batch process introduction and validate with business that data flow is proper.Documentation and validation that all configurations and directories have environment, based data and all parameterizations meet the JSON request parameters for REST API calls.Final sign off on code deployments and production updates for code.Consultation with developers to fix errors and support in analysis for any error they come across.Database Migrations:Create tables and parameters for DB2 table models within Couchbase DB.Generation of use cases for each row and column of user data.Optimization of queries and reducing how long it takes the batch process to access data from tables.
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  • Infosys
    Big Data Developer
    Infosys Oct 2019 - Dec 2022
    Bangalore, Karnataka, In
    Client : AMEX, Phoenix, AZ as Software Engineer Description : EPCC Design and Development of UI for client to access data via custom UI. (STEPHI)Technology used: Python-Spark ,JAVA Full Stack, Jenkins, Splunk, Couchbase,DB2,Maven,XL Release, AngluarEPCC UI Web PageDevelop backend functionality and data flow from SQL tables to UI.Create Swagger UI schema for web functions to be properly documented.Migrate DB2 queries and tables to Couchbase format.Development of QA process for new application modules.Measure and determine testing coverage upon release to production.Utilize Hadoop infrastructure to paramaterize incoming big data.Develop Python-Spark code to access, and process SQL or hive information.Develop aggregations in data flows to meet business needs.Modeling information from multiple data streams captured with Hive.Environment on Linux based servers, and command line programming.End to End regression testing on application changes.Create technical documentation to express testing the application has satisfied business requirements.
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  • Infosys
    Senior Software Engineer
    Infosys May 2018 - Dec 2022
    Bangalore, Karnataka, In
    Alter monolithic applications into a micro-service environment.Update and develop full stack web applications.Enterprise driven software application design.Creating secure back end systems, standard front end, along with middle-end integration.Test Driven Development environment.SAFe - Agile methodology to create usable code.Experienced diverse enterprise cultures and application architecture styles.
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  • Infosys
    Mid-Range Software Programmer/Developer
    Infosys Jul 2018 - Jun 2019
    Bangalore, Karnataka, In
    Client : AMEX, Phoenix, AZ as Software Engineer Description : Outbound Services communication platform development for AMEX email communication templates.Technology used: JAVA Full Stack, XML, Solace, Kafka, Spring, Thunderhead, Maven, Jboss, XL Release, Jenkins, Servicenow, Splunk, CouchbaseCommnet Database PortalDevelop methods and controllers to migrate DB2 queries into Couchbase DB style JSON Object.Update rest API to handle new requests.Coordination and collaboration among many internal teamsMetadata/Caching APIEnterprise grade, Fault tolerant system which caches information from database, allowing for faster information retrievalSolace, Kafka, Couchbase and DB2 integrationDeveloping methods to invoke a UTF-8 render on international characters not recognized by the Metadata API.Thunderhead TechnologiesOperate as subject matter expert in Thunderhead software which consisted of XML documentassembly, REST API call validation, and process flow tracking on company communications.Assemble XML contracts to reflect dynamic variables being passed by feeder applications.Test and Production SupportIdentify, isolate and fix bugsWorked closely with upstream/frontend teams and consumersManage production support sprints, where OSCP applications are monitored -- proper solutions/hotfixes are implemented in production environment
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  • Revature
    Full Stack Java Software Engineer
    Revature Feb 2018 - May 2018
    Experience in building full stack web applications.Enterprise driven software applicationsCreating secure back end systems, standard front end, along with middle-end integration.Test Driven Development environment.SCRUM and Agile methodology to create usable code.Experienced diverse enterprise cultures and application architecture styles.
  • Technical Experience
    Freelance
    Technical Experience May 2011 - Dec 2017
    Assisted Penn State aquatics operation of Fuzion software for employee management, created permissions on user accounts, and migrated old server data from multiple relation databases.Assisted Penn State aquatics, by upkeeping website information and updating image feed with XML/CSS. Managed student computer repair services, and software solutions based on problems presented.Designed various mobile applications scripted using Android Java or Apple IOS with a tech start up.Developed full stack real estate, investment application for experimental private realty investors.Took online courses and tutorials to strengthen SQL, Java, C++ language fluency.Web and graphic designs for custom user interface with Photoshop and Adobe Dreamweaver.
  • Blue Mountain Quality Resources, Inc.
    Systems Implementation Analyst
    Blue Mountain Quality Resources, Inc. May 2015 - Nov 2016
    State College, Pa, Us
    -Assisted clients with validation of documentation compliance with FDA regulations.-Installed task management software onto client servers remotely and physically on site.-Trained clients in proper software usage, along with validating that it installed properly.-Aided instruction of Web demonstrations of software usage to potential clients.-Created extensive standard operating procedures for custom client software configuration.-Made sure SQL data migration from old client servers to new servers is without error;-Assisting clients during software configuration periods while providing a solution to the types of systems available from client;-Consultations recommending what type of hardware and server software should be in place preceding the software configuration;
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  • Digital Media Academy
    Assistant Instructor
    Digital Media Academy Jun 2014 - Aug 2014
    Palo Alto, California, Us
    -Provided programming expertise to Drexel and Bryn Mawr University students.-Instructed a game design class to a high school level course and roster.-Coached students in Java programming and installed education software using desktop imaging on VPN.-Educated students on game development process, aided with syntax errors, and explained proper code etiquette.-Installed fresh Mac book based labs into classrooms, evaluated software and server, and wiped out software when needed. -Created deadlines and helped resolve syntax/bug errors in the students code.-Designed lesson plans for Eclipse development environment; -Evaluate software and server specs for every installation of software.
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Nicolas Zwierzynski Skills

Microsoft Office Microsoft Excel Public Speaking Leadership Customer Service Teamwork Research Project Management Sql Management C++ Sql Report Writing Assistant Teaching Assistant Lecturer Ist Java System Integration Polish Language Xml Xml Schema Definition Adobe Dreamweaver Adobe Photoshop Graphic Design Secuirty Risk And Analysis Networking Virtual Private Network Fda Gmp Linux Apple Android Development Software Development Software Configuration Management Customer Product Training Crm Software Consulting Professional Services Telecommunications Marketting Wireshark Windows Server Windows Os

Nicolas Zwierzynski Education Details

  • Penn State University
    Penn State University
    Information Technology And Sciences

Frequently Asked Questions about Nicolas Zwierzynski

What company does Nicolas Zwierzynski work for?

Nicolas Zwierzynski works for Infosys

What is Nicolas Zwierzynski's role at the current company?

Nicolas Zwierzynski's current role is Technical Lead - Full Stack Java Engineer - Site Reliability Engineering.

What is Nicolas Zwierzynski's email address?

Nicolas Zwierzynski's email address is ni****@****ess.com

What schools did Nicolas Zwierzynski attend?

Nicolas Zwierzynski attended Penn State University.

What skills is Nicolas Zwierzynski known for?

Nicolas Zwierzynski has skills like Microsoft Office, Microsoft Excel, Public Speaking, Leadership, Customer Service, Teamwork, Research, Project Management, Sql, Management, C++, Sql Report Writing.

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