.NET Fullstack Senior Developer - HYBRID

Req ID: 371782

NTT DATA strives to hire exceptional, innovative and passionate individuals who want to grow with us. If you want to be part of an inclusive, adaptable, and forward-thinking organization, apply now.

We are currently seeking a .NET Fullstack Senior Developer - HYBRID to join our team in Parispanny, New Jersey (US-NJ), United States (US).

Position Overview

Provide  application maintenance ,  technical support , and  enhancements for a portfolio of internal and customer-facing web applications. Work closely with operations, security, and product teams to support feature updates, interface migrations, disaster recovery exercises, security remediations, and CI/CD improvements.

Day to Day Responsibilities:

• Maintain and support multiple web applications and backend services (enrollment, account management, rate-quoting, customer events repository, contact-center backup).
• Provide  tier 2/3 technical support for application issues, perform incident troubleshooting and root cause analysis.
• Deliver  development tasks and backlog items (bug fixes, enhancements, integration work).
• Participate in  DevOps/CI-CD activities to improve release pipelines, automation, and test coverage.
• Execute  security vulnerability remediation and respond to automated scan findings.
• Support  disaster recovery (DR) planning and exercises , including failover and temporary operations in alternate datacenters/cloud regions.
• Coordinate with infrastructure teams on  patching, OS/DB upgrades, and certificate management .

Regular / Recurring Tasks (examples)

• Migrate legacy interfaces to modern APIs (e.g.,  SOAP → REST , or legacy web services → modern service endpoints).
• Perform  yearly password rotations across databases, Linux jobs, cloud services, and API credentials.
• Participate in scheduled  DR exercises
• Requesting and installing  SSL/TLS certificates on application servers as required.
• Implement periodic business configuration updates (e.g., country activations, pricing/declared value updates, dimension/weight rules).
• Run and remediate results from  periodic web vulnerability scans (quarterly).
• Monitor and maintain scheduled jobs, Windows services, and background workers that support application integrations and email alerts.

Project-Based Tasks

• Migrate authentication and identity systems (e.g., internal login systems →  Azure AD / modern identity providers ).
• Migrate access management from legacy provisioning tools to modern identity governance solutions.
• Plan and execute  SQL Server upgrades, and migrate workloads off end-of-service OS or application servers.
• Maintain and update  ETL/SSIS packages , and support Windows services or background processes written in C#.
• Verify and test changes in interfacing applications; provide impact analysis and estimates for production changes (PID/impact evaluation).
• Participate in  capacity/peak planning with support and operations teams.
• Prepare infrastructure change requests and coordinate upgrades.

Enhancement & DevOps Responsibilities

• Implement small feature changes or new flows for account creation, UUID generation, fraud-validation integration, contact preference handling, and similar features.
• Convert and migrate source control and CI pipelines (e.g.,  VS source control → Git / Azure DevOps ).
• Implement or improve  automated quality and security testing (unit tests, integration tests, security scans).
• Support  tiered application support , resolve issues escalated from first-line teams.
• Deliver small project items and reduce technical debt in backlog.

Basic Qualifications

• 7+ years supporting enterprise web applications
• 7+ years with .NET Core Development – full stack development focused
• 5+ years of experience in C#, Angular and SQL Server
• 3+ years of experience in GCP Firebase Firestore
• 1+ years with Openshift

Desired Technical Skills

• Experience in GCP Platform - Firebase Firestore and NoSQL
• Strong development experience with  C#and  .NET Core (or later).
• Proficient in front-end technologies:  HTML ,  CSS ,  JavaScript ,  TypeScript , and  Angular (modern versions) .
• Experience with  web services :  SOAP and  REST APIs.
• SQL experience:  Microsoft SQL Server and familiarity with  SSIS packages.
• Experience with background services and Windows Server hosted apps.
• Familiar with CI/CD tooling:  Azure DevOps (ADO) pipelines , Git-based source control.
• Familiarity with static analysis and security tooling:  SonarQube , web vulnerability scanners (e.g.,  Netsparker / Invicti ).
• Knowledge of logging and artifact management (e.g.,  JFrog or equivalent).
• Ability to work with cloud platforms and cloud-native patterns (either GCP or Azure experience preferred).
• Strong troubleshooting skills: log analysis, tracing, and root cause determination.
• Understanding of authentication/token mechanisms (e.g.,  JWT , OAuth/OIDC, Azure AD).
• Experience with  Google Cloud Platform (App Engine, Cloud Functions, Firestore, Cloud Build, Cloud Armor)
• Demonstrated experience in both  support/operational roles and  development roles .
• Prior experience with security remediation, and cross-team coordination preferred.
• Bachelor’s degree in Computer Science, Information Systems, or equivalent preferred 

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About NTT DATA

NTT DATA is a $30 billion business and technology services leader, serving 75% of the Fortune Global 100. We are committed to accelerating client success and positively impacting society through responsible innovation. We are one of the world's leading AI and digital infrastructure providers, with unmatched capabilities in enterprise-scale AI, cloud, security, connectivity, data centers and application services. our consulting and Industry solutions help organizations and society move confidently and sustainably into the digital future. As a Global Top Employer, we have experts in more than 50 countries. We also offer clients access to a robust ecosystem of innovation centers as well as established and start-up partners. NTT DATA is a part of NTT Group, which invests over $3 billion each year in R&D.

Whenever possible, we hire locally to NTT DATA offices or client sites. This ensures we can provide timely and effective support tailored to each client’s needs. While many positions offer remote or hybrid work options, these arrangements are subject to change based on client requirements. For employees near an NTT DATA office or client site, in-office attendance may be required for meetings or events, depending on business needs. At NTT DATA, we are committed to staying flexible and meeting the evolving needs of both our clients and employees. NTT DATA recruiters will never ask for payment or banking information and will only use @nttdata.com and @talent.nttdataservices.com email addresses. If you are requested to provide payment or disclose banking information, please submit a contact us form,

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