Senior .NET Integration Engineer

ZealHire Inc.; Fort Worth (TX); Hybrid; USD 90,000 - 130,000; Full time

Job summary

ZealHire Inc. is seeking a Senior .NET Integration Engineer to design, build, and support scalable integration solutions. The role focuses on API development and system integrations, with backend work in .NET and exposure to full-stack technologies.

You will collaborate with product and business teams, vendors, and engineers to reduce technical debt, improve performance, and mentor juniors in an Agile/DevOps environment.

Qualifications

• Experience designing, developing, and implementing large-scale production solutions.

Responsibilities

• Design, develop, test, document, and support production-quality software solutions.

Skills

API development

System integrations

Backend development

Agile/Scrum

DevOps

Object-oriented design

Full-stack development

Angular

Playwright

Tools

Angular

PostgreSQL

MongoDB

Azure

GitHub CI/CD

Playwright

Job description

Senior .NET Integration Engineer | JPC-8454

Job ID: AAJP00011494

Location: 4700 American Boulevard Fort Worth, TX 76155 (Hybrid) NEED LOCALS

Durations: 6-12+ Months with possible extension and conversions.

Interview Process: Two rounds – first virtual, second onsite

The ideal candidate will have strong experience with API development, system integrations, backend development using .NET, and full-stack technologies.This role requires someone who can work closely with product, business, technical, vendor, and third-party teams to deliver scalable solutions. The engineer will also help resolve integration issues, reduce technical debt, improve system performance, and guide junior engineers.

Required:

• Experience designing, developing, and implementing large-scale production solutions.
• Strong experience with API and system integration development.
• Experience working with internal and third-party systems.
• Strong troubleshooting, problem-solving, and communication skills.
• Experience working in Agile/Scrum and DevOps environments.
• Strong understanding of object-oriented design and software development principles.

Preferred:

• Background in system administration, environment support, or application configuration.
• Experience leading data mapping and transformation efforts.
• Experience resolving complex integration issues.
• Experience with full-stack development using Angular, .NET APIs, PostgreSQL or MongoDB, Azure, GitHub CI/CD, and Playwright.
• Experience with automated testing and production support.

Responsibilities:

• Design, develop, test, document, and support production-quality software solutions.
• Build APIs, system integrations, reusable components, and technical libraries.
• Develop and support integrations between internal and third-party systems.
• Troubleshoot complex technical issues and perform root cause analysis.
• Lead corrective actions to resolve recurring or systemic problems.
• Design scalable, reliable, secure, and high-performing systems.
• Support data mapping and transformation activities to ensure accurate data exchange.
• Identify and reduce technical debt across existing applications.
• Anticipate challenges related to scalability, latency, performance, and system durability.
• Work with security teams to incorporate secure development practices.
• Collaborate with product managers, business teams, vendors, and technical stakeholders.
• Support CI/CD, deployment, configuration, and environment management.
• Identify opportunities for code reuse and reduce duplicated efforts across teams.
• Coach junior engineers and promote strong engineering practices.
• Contribute to Agile ceremonies and recommend improvements to delivery processes.
• Research emerging technologies and develop prototypes when appropriate.

$000,000 – $000,000 Salary range is not shown on the candidate portal