.NET Fullstack Senior Developer - HYBRID

NET Fullstack Senior Developer - HYBRID

Company: NTT DATA Services

Location: Parispanny, NJ, 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