.Net Core C#
Resume:
SEBASTIAN ABRAHAM
*********.*******@*****.***
SENIOR CONSULTANT
www.linkedin.com/in/sebastianabraham
Highly skilled Team Lead with 15+ years of experience in software development, architecture, and leading cross-functional development teams. Proven track record of delivering complex projects on time by guiding teams through all phases of the software development lifecycle. Adept at designing scalable and efficient software architectures, refactoring legacy systems, and transforming monolithic applications into modern microservices. Hands-on experience with front-end and back-end development, cloud computing, and DevOps practices. Strong advocate of Agile methodologies, driving collaboration, continuous improvement, and alignment with business objectives. Known for excellent communication skills and the ability to bridge the gap between technical and non-technical stakeholders.
KEY SKILLS
Back-End
C#, .NET Core, .NET 4.x, ASP.NET MVC, Web API
Entity Framework, NHibernate, WCF, VB.Net, WPF
Node.js, VC++, Python, Elasticsearch
Java, Spring Boot, Spring Rest, JDBC
Databases
MS SQLServer, PostgreSQL, Oracle, DB2, Neo4j
Azure Data Factory,MongoDB, Cloud Datastore
Cloud
GCP, AWS, Azure, Salesforce,
S3, EC2, EFS, EBS, CloudWatch, Cloud Front, Route 53
VMs, Azure Blob, Azure Files, Azure Monitor
GCE, Cloud Storage, Datastore,Pub/Sub, Stackdriver
Front End
Angular 16, AngularJS, JSON, Redux, RxJS
TypeScript, JavaScript, webpack
jQuery, Bootstrap, HTML5, LESS
DevOps
Jenkins, CI/CD, Azure Pipelines, Docker
Testing
Nunit, MbUnit, Jasmine, TDD, DDT
Reporting Tools
Looker Studio, Cognos 8, Crystal Report 11, SSRS
DETAILED PROFESSIONAL EXPERIENCE
Equifax >> Sr. Consultant (Remote)
Project – The Work Number (TWN) – Cloud Migration
Alpharetta, GA
Jun 21 – till date
The primary goal is to decommission TWN Oracle DB and make the monolithic TWN application into microservices. The Work Number is an American employment verification database created in 1985 by Talx Corporation. Talx, (now Equifax Workforce Solutions) was acquired by Equifax Inc. in 2007.Through, The Work Number, employers can purchase data on a prospective employee, including confirmation of an individual's employment records and income for verification purposes.
Analyzes, defines, and documents requirements for data, workflow, logical processes, interfaces with other systems, internal and external controls and output.
Identifies and resolves conflicts between proposed solutions and existing systems to ensures compatibility.
Responsible for and leads the implementation of systems/applications into test and production environments. Prepares implementation plans and change requests required for system migration
Using lift and shift strategy migrate the application to GCP
Designed the DFD for the microservices; designed the API End points and payloads
Created and consumed APIs and Microservices using .NET Core/NodeJS and Datastore.
Developed Rest API using Java Spring Boot
Developed Rest API for CRUD operations and published those on Swagger to other application teams to consume it.
Developed new product features using Angular 16, Typescript, C# Web API and .Net Core.
Configured DataDog Synthetic test and Real User Monitoring (RUM) for the apps.
Implemented SSO PingID integration for the APP
Worked with PingID setup using PingFederate for MFA (Multi-Factor Authentication)
Developed Looker Studio dashboard using BigQuery
Env/Tech Used: Cloud Storage, Datastore, Pub/Sub, Angular 16, NodeJS, Typescript, C#, .Net Core, Java 21, Spring Boot, Spring Rest, Docker, VC++,Node.js, PostgreSQL, Python, Kubernetes, PingId, Jira, OAuth2, MongoDB, DataDog, Splunk, Dynatrace, BigQuery
PennyMac >> Sr. Consultant (Remote)
Project – Statement Refactoring
Plano, TX
Apr 21 – Jun 21
PennyMac was inadequate to generate 3 million statements on time in the specified window. PennyMac needs an intermediate solution; they have planned a new process that migrates to AWS by next year.
I have provided an interim solution with minimum code change and it is achieved with half of their budget.
My experience with HCSC helped me for this solution, Refactored the legacy codebase that can be executed in parallel in small chunks, and improved the performance by 3x time.
Env/Tech Used: SQL Server, SSIS
Equifax >> Sr. Consultant (Remote)
Project – Authentication Gateway Cloud Migration (AGCM)
Alpharetta, GA
Aug 20 – Apr 21
The Authentication Gateway (SSS) is a single, centralized authentication and authorization system for all internal/external facing Equifax applications. Equifax was in process of migrating the OnPrem applications to GCP and decommissioning Oracle. SSS is a core Single Sign On legacy application of Equifax; and is on VC++ and Oracle.
Analyze the scope, challenges, identify the technical issues to implement the migration
Provide the detail specification and involved in the project plan for the migration
Consolidation and refactoring the legacy program modules to C# that target to Web API’s
Developed Data Driven Test Framework for automating the API testing in which data files and expected results are on XML files; and driver script is implemented on Python.
Refactored and converted PL/SQL to PostgreSQL functions and stored procedures
Env/Tech Used: Oracle PL/SQL, VC++, PostgreSQL, Python, C#, .Net Core, Web API, Jira, Git, GCP, GCE
Risk Management Association (RMA) >> Sr. Consultant (Hybrid)
Project – eMentor
Philadelphia, PA
Jan 20 – May 20
Migrate the Learning Management Systems (LMS) to SCORM Cloud resulting in 4x cost reduction spent on hosting.
Developed new and customization of the existing features using Angular 9, C# and .Net Core
Integrated with IdentityServer4 using OAuth2 and OpenID Connect
Rehosting the application to AWS using the services EC2, S3, EFS, Cloud Front, Route 53 and Cloud Watch
Env/Tech Used: .Net Core, C#, Angular 9.0, Typescript, Web API, Entity Framework Core, AWS Services.
Infogix >> Sr. Consultant (Remote)
Project – Data3Sixty
Naperville, IL
Feb 18 – Jan20
Handled full-stack programming tasks using C#, .Net Core, Restful Web API, Angular 8, Typescript and SQL Server
Configurated the fully automated CI/CD lifecycle for code deployment using Git, Liquid Base, Azure DevOps
Prepared high level design documents and conduct design and code reviews, lead the team in all technical matters.
Developed Azure Batch Jobs for online and offline batch process using Azure Blob Storage
Env/Tech Used: .Net Core, C#, Angular 8, Typescript, Web API, Entity Framework Core, SQL Server, Azure VMs, Azure Blob, Azure Files, GraphQL, Azure Monitor, Webpack 3.1, Redux, Rxjs, Cosmos DB, Autofac, Node JS, Materialize CSS, Less.js
Public Consulting Group (PCG) >> Sr. Consultant (Hybrid)
Project – Asset Verification System
Boston, MA
Aug 15 – Jan 18
Have used the Lift and shift strategy migrated the application to AWS.
AWS DataSync is used for managed file transfer from on-premises sources to AWS
Full Stack development using Angular 4, ASP.NET MVC 5, WCF, Web API.
Have used Amazon CloudWatch Logs to monitor, store, and access the log files from EC2 instances, AWS CloudTrail, and S3. Client uploaded files are stored on S3 and later processed by Translator and Workflow engine.
Boston Consulting Group (BCG) >> Solution Architect (Hybrid)
Project – OrgBuilder
Chicago, IL
Apr 15– Jul 15
Purposed architecture design changes and design areas that need to be focused on. Presented the findings and improvements opportunities with the architecture/design changes.
Demo the POC on the purposed architecture design to key stakeholders, and submitted the architecture assessment document. Conducted workshops to review and validate BCG product's current technical state
Env/Tech Used: C#, Entity Framework 6.0, Visio 2013, Visual Studio .NET 2013, SQL Server 2008 R2, HTML5, NUnit, WCF, MVC 5, Web API, jQuery, AngularJS, Bootstrap, Neo4j 2.2, Rhino Mocks, AWS
BlueCross Blue Shields (HCSC) >> Sr. Consultant (Onsite) with Deloitte's Consulting LLP Team
Project – RMAS Re-factorization
Naperville, IL
Jun 14 – Mar 15
HCSC was unable generate 16 million statements (invoice) on time in the specified window to meet the compliance.
They were looking for a solution; we have solution which is used on DUA MA; which have process called uFacts Batch Framework. Refactored the legacy codebase and the incorporate to work on UFacts Batch Framework. and improved the performance by 5x time. Performance tuning of the legacy data storages and search queries using DynaTrace, ANTS, Fog light and SQL profilers
DUA MA >> Sr. Consultant (Onsite) Team Lead with Deloitte's Consulting LLP Team
Project – Massachusetts Unemployment Insurance (UI) Online Application
Boston, MA
May 11 – May 14
Architected, Designed and Developed the Collection Module; which has sub module like Tax Intercept, Treasury Offset Program, IRORA, Manage Debt, Waiver, Write-Off, Payment plan and Collection correspondences
Providing technical and leadership assistance for the developer team members related to Collections
Architected the end-to-end Debit Card & ACH for Bank of America and Direct deposit interfaces for Sovereign Bank
Env/Tech Used: C#, uFacts Framework, ASP.NET MVC 4.0, Web API, Oracle 11g, PL/SQL, WCF, Filenet
American International Group (AIG) >> Sr. Consultant (Onsite) Team Lead
Project – Executive Marketing Information System (EMIS)
Bedford, NH
Apr 07 – May 11
Re-architecture the legacy application into SOA architecture. In this approach preserved a good deal of the business logic and avoid building a new application from scratch. Mentored and couching newly hired team members.
Designed and developed business component using WCF and is used by other applications like ESTART, DBGM, and AIU. Coordinated with engineering and product teams in the identification of customer requirements. Experimenting with latest front-end technologies as a part of the implementation.
Env/Tech Used: C#, ASP.NET, MVC 2.0, VC++, Web Service, WCF, MSMQ, Cognos, Salesforce
J. Knipper and Company, Inc. >> Sr. Software Specialist / Team Lead Lakewood, NJ Project: Sales Support System (S3) Apr ‘05 – Dec’06
Involved in designing the Architecture for S3 system based on MVC (Model View Controller) and SOA (Service Oriented Architecture) Patterns
Master Data Management for specific data objects -- like Physician, Sales Rep, Product
Conducted Performance Tuning of Queries & Stored Procedures
Created complex SQL stored procedures, views and user-defined function in Sql Server 2005, and are used in Crystal reports for reporting.
Designed and developed an application that can design, generate, distribute reports. This is developed on windows forms using C#.
Env/Tech Used: C#, VB.NET, ASP.NET, Biztalk 2004, IIS, Visual Studio .NET 2005, UML, Visio 2005, VSS, SQL Server 2005, Crystal reports 11.0, WCF,WebService, SOAP, XML, XSLT,.Net Remoting, LINQ
Ebbon-Dacs Ltd >> Sr. Systems Analyst Oxford, UK Project: United Installment Sales (UIS) Jun ‘04 – Apr ’05
Developed widget interface using GUI components and core components using C#
Developed the modules for fleet vehicle procurement/logistics.
Designed the developed the components that can make SOAP api call on dealers and leasing brokers
Developed the custom control and UIS Web application using ASP.NET and VB.NET
Designed the XML structure for the defined data that stored in the database
Interact with business analyst, project manager to facilitate the precise system requirement.
Env/Tech Used: C#, VB.NET, ASP.NET, XML, SOAP, ASP, ADO.NET, Visio 2000, SQL Server 2000, Reporting Services
Education - Master of Computer Application (MCA); Bharathiar University
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