Senior .NET Integration Developer

U.S. Legal Support, Inc.; Houston, Northern (TX, KY); Hybrid; USD 110,000 - 160,000; Full time

Job summary

U.S. Legal Support, Inc. is seeking a Senior .NET Integration Developer to design, develop, and support integrations between internal apps and external systems.

You will own third‑party integrations end to end, work with clients and partners on setup and issues, and help migrate existing scheduled integration jobs to a more stable job-processing platform. The ideal candidate will have strong experience with .NET, C#, REST APIs, SQL, and third-party integrations, along with the ability to

Qualifications

• 5+ years of professional software development experience, with significant experience developing applications and integrations.
• Strong hands-on experience with .NET / .NET Core, C#, and RESTful APIs.
• Experience developing and supporting internal and external integrations.
• Experience working with third-party/external APIs and authentication mechanisms.
• Strong understanding of HTTP, JSON, XML, and common integration patterns.
• Experience with relational databases (MS SQL Server, MySQL/MariaDB).
• Proficiency with Git and source code repository practices.
• Experience with Azure DevOps and CI/CD pipelines.
• Experience troubleshooting production applications and performing root cause analysis.
• Demonstrated experience working directly with clients, external partners, or business stakeholders on technical projects or integrations.
• Strong written communication skills, with the ability to clearly document and communicate technical issues, requirements, solutions, and project status.
• Bachelor's degree in Computer Science or related field, or equivalent professional experience

Responsibilities

• Design, develop, and maintain .NET-based integrations and RESTful APIs.
• Develop and support integrations between internal applications, services, databases, and external systems.
• Work with external APIs, webhooks, SFTP, web services, file-based integrations, and other integration mechanisms.
• Implement data transformation, validation, error handling, retry mechanisms, and logging.
• Configure and maintain firm- or partner-specific mappings, credentials, and integration settings.

Skills

.NET / .NET Core

C#

REST APIs

SQL

Education

Bachelor's degree in Computer Science or related field

Tools

Git

Azure DevOps

Hangfire

MS SQL Server

MySQL

Job description

We are seeking a Senior .NET Integration Developer to design, develop, maintain, and support integrations between internal applications and external systems. This role requires strong hands-on technical skills, production troubleshooting experience, and the ability to independently deliver reliable integration solutions.

This person will own third-party integrations end to end: building and supporting them, working with clients and partners on setup and issues, and helping migrate existing scheduled integration jobs to a more stable job-processing platform.

The ideal candidate will have strong experience with .NET, C#, REST APIs, SQL, and third-party integrations, along with the ability to work with internal and external teams to troubleshoot and resolve complex integration issues.

Key Responsibilities

Integration Development

• Design, develop, and maintain .NET-based integrations and RESTful APIs.
• Develop and support integrations between internal applications, services, databases, and external systems.
• Work with external APIs, webhooks, SFTP, web services, file-based integrations, and other integration mechanisms.
• Implement data transformation, validation, error handling, retry mechanisms, and logging.
• Configure and maintain firm- or partner-specific mappings, credentials, and integration settings.

Job Platform & Migration

• Support existing scheduled integration jobs currently running across mixed platforms.
• Help migrate those jobs to a more reliable job-processing platform (such as Hangfire), including scheduling, retries, monitoring, and failure alerting.
• Improve reliability by reducing silent failures, duplicate runs, and hard-to-support job wrappers.
• Maintain and improve automated notifications related to job success, failure, and operational status.

Production Support

• Troubleshoot and resolve complex production and integration issues.
• Perform root cause analysis and implement permanent fixes.
• Analyze application logs, API responses, database records, and integration workflows to identify issues.
• Work with infrastructure teams, vendors, and external partners to resolve issues spanning multiple systems.

Client & Partner Communication

• Participate in client meetings to understand integration requirements, troubleshoot issues, and communicate technical solutions.
• Communicate directly with clients and external partners regarding integration setup, API requirements, testing, issues, and deployment activities.
• Lead technical onboarding for new integrations, including gathering requirements, coordinating testing, and supporting go-live.
• Prepare clear and professional email communications for technical and non-technical audiences.
• Coordinate with clients and internal teams to track integration issues, dependencies, and action items.
• Translate technical details into clear business-friendly explanations when working with clients.

Technical Development

• Participate in technical design and architecture discussions.
• Perform code reviews and follow established coding and security standards.
• Contribute to CI/CD pipelines and deployment processes.
• Create and maintain technical and operational documentation.

Core Competencies

• Strong written and verbal communication skills
• Ability to communicate effectively with both technical and non-technical audiences
• Professional and confident communication with clients and external partners
• Strong hands-on development and integration skills
• Advanced troubleshooting and analytical abilities
• Strong understanding of API design and integration patterns
• Ability to independently solve complex technical problems
• Strong focus on code quality, reliability, security, and maintainability

Position Requirements

• 5+ years of professional software development experience, with significant experience developing applications and integrations
• Strong hands-on experience with .NET / .NET Core, C#, and RESTful APIs
• Experience developing and supporting internal and external integrations
• Experience working with third-party/external APIs and authentication mechanisms
• Strong understanding of HTTP, JSON, XML, and common integration patterns
• Experience with MS SQL Server, MySQL/MariaDB, or equivalent relational databases
• Proficiency with Git and source code repository practices
• Experience with Azure DevOps and CI/CD pipelines
• Experience troubleshooting production applications and performing root cause analysis
• Demonstrated experience working directly with clients, external partners, or business stakeholders on technical projects or integrations
• Strong written communication skills, with the ability to clearly document and communicate technical issues, requirements, solutions, and project status
• Bachelor's degree in Computer Science or related field, or equivalent professional experience

Preferred / Nice-to-Have Skills

• Experience with Hangfire or similar background-job / scheduling platforms
• Experience migrating scheduled jobs, console apps, or legacy batch processes to a modern job platform
• Experience with Salesforce or other enterprise / case-management platforms
• Experience with document management or document-based integrations
• Experience with SFTP and file-based integrations
• Experience with AWS services such as S3, EFS, SES, SNS, Lambda, or EC2
• Experience modernizing or migrating legacy applications to modern .NET
• Experience working with legacy Java applications
• Working knowledge of Linux environments
• Experience with automated testing and application monitoring
• Experience using AI-assisted coding tools such as GitHub Copilot, Cursor, or similar tools.

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Senior .NET Integration Developer Job Description.docx