Senior .NET Developer

Creative Solutions Services, LLC

Hartford (CT)

Hybrid

USD 83,000 - 152,000

Full time

14 days+

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Job summary

Creative Solutions Services, LLC is seeking a Senior .NET Developer to support development across OEC, including Power Apps, web UI, and enhancements to .NET apps. The role blends requirements analysis, software development, and data migration validation within an Agile Scrum framework.

You will join a cross-functional Scrum team to deliver high-quality incremental releases and support data migration efforts with automated validation scripts.

Qualifications

Proficiency in ASP.NET MVC and Entity Framework for web app development.
Strong understanding of Azure services including SQL, App Service, DevOps, CI/CD and Git.
Experience developing automated data validation/testing scripts; SQL or scripting languages.
Fluent data modeling, data mapping, and documenting legacy-to-modern mappings.
Experience with Azure DevOps for work items, tests, and defects.
Solid Agile/Scrum knowledge and practices.

Responsibilities

Elicit and document requirements with stakeholders, maintain Azure DevOps backlog.
Design, develop, and refactor components using ASP.NET MVC and EF.
Contribute to CI/CD pipelines and optimize deployment using Azure DevOps.
Work with Azure SQL, ETL/SSIS, and data migration activities.
Create data mappings, interface mappings, and traceability artifacts.
Participate in Scrum ceremonies and collaborate with cross-functional teams.

Skills

ASP.NET MVC

Entity Framework

Azure Platform

Azure DevOps

SQL

Data Mapping

Agile/Scrum

CI/CD

Excel

Visio

Tools

Power Apps

Azure SQL

App Service

Azure Git Repositories

SSIS

SQL Server

Job description

Title: Senior .NET Developer

Location: Hartford, CT (Hybrid)

Duration: 10 Months

Interview: MS Teams

Candidate Must Be Local
Hybrid work schedule. Onsite One Day a Week.

Short Description

The Client is seeking a Senior Developer to support development work across OEC, include design and development of Power Apps, web base customer facing UI, and enhancements/bug fixes for current .NET applications. This role combines requirements analysis, software development, and data migration validation responsibilities within an Agile Scrum framework. The candidate will be a key member of a cross-functional, self-managed Scrum team, collaborating with product owners, developers, testers, and data specialists to deliver high-quality, incremental releases. A significant aspect of this position involves supporting the project's data migration efforts, including developing and executing automated, reusable data testing scripts to validate migration accuracy across environments and documenting data and interface mappings between legacy and modernized systems.

Job Description

Requirements Analysis & Documentation

Collaborate with OEC stakeholders and technical teams to elicit, analyze, and document business and system requirements.
Translate business needs into user stories and acceptance criteria, maintaining a refined Azure DevOps product backlog.
Document current and future state workflows, integration points, and data dependencies.
Create and validate data mapping documents between legacy and modern systems.
Develop interface mapping documentation to align legacy screens and functions with modernized application components.
Define and maintain functional, non-functional, and reporting requirements, ensuring end-to-end traceability.

Software Development & Technical Implementation

Design, develop, and refactor components using ASP.NET MVC, Entity Framework, and Azure App Service.
Contribute to CI/CD pipeline setup and optimization using Azure DevOps and Azure Git Repositories.
Work with Azure SQL databases to design schema, implement stored procedures, and optimize performance.
Collaborate with data engineers on SSIS-based ETL processes and data migration activities.
Participate in code reviews, ensuring adherence to best practices for performance, maintainability, and security.

Data Migration Validation & Testing

Develop and maintain omnipotent (comprehensive, reusable) data validation scripts to verify migrated data after each migration cycle in test environments.
Validate record counts, referential integrity, field-level transformations, and business rule consistency across environments.
Identify and analyze data discrepancies, collaborating with developers and data teams to resolve issues.
Maintain documentation for data validation procedures, testing outcomes, and transformation logic.
Support system, integration, and user acceptance testing (UAT) by creating and executing test cases.
Log and manage defects and testing results using Azure DevOps.

Agile/Scrum Collaboration

Serve as an active member of a cross-functional, self-managed Scrum team responsible for delivering working software increments.
Participate in all Scrum ceremonies—including daily stand-ups, sprint planning, reviews, and retrospectives.
Work closely with the Product Owner to refine and prioritize backlog items and define sprint goals.
Contribute to a culture of continuous improvement, team collaboration, and shared accountability.

Technical Skills & Qualifications

Required:

Proficiency in ASP.NET MVC and Entity Framework for web application development.
Strong understanding of Azure platform services, including Azure SQL, App Service, Azure DevOps, CI/CD pipelines, and Azure Git Repositories.
Expertise in developing and executing automated data validation/testing scripts (SQL or other scripting languages).
Strong grasp of relational databases, data modeling, and data mapping techniques.
Experience documenting and validating legacy-to-modern data and interface mappings.
Proficiency in Azure DevOps for managing work items, test cases, and defect tracking.
Solid understanding of Agile/Scrum principles and practices.
Proficiency in Microsoft Office Suite, including Excel (for data analysis) and Visio (for process mapping).

Preferred:

Experience with legacy system modernization or public-sector transformation projects.
Knowledge of security, access control, and user role management in enterprise applications.
Familiarity with API documentation, system integration, and report validation.

Key Deliverables