Senior .NET AI Developer

Apex Systems; Austin (TX); On-site; USD 140,000 - 180,000; Full time

Job summary

Apex Systems is seeking a Senior .NET AI Developer to lead the development of scalable, cloud-native, event-driven applications in a financial services context. The role requires deep .NET expertise combined with cloud, messaging, and Generative AI technologies to advance AI-assisted engineering across the SDLC.

Responsibilities include designing distributed systems with .NET and Kafka, building robust APIs, guiding teams, and leveraging GenAI tools to accelerate development, testing, and

Qualifications

• 7+ years of software engineering experience developing scalable .NET applications and web services.
• Strong expertise in .NET/C#, Kafka, REST APIs, Microservices, Event-Driven Architectures, Distributed Systems.

Responsibilities

• Design, develop, and modernize distributed applications using .NET, Kafka, microservices, and cloud-native architectures.
• Build high-volume APIs and services that support business-critical workflows and transaction processing.
• Partner with architects, product owners, and engineering teams to deliver scalable, resilient solutions.
• Leverage GenAI tools to accelerate development, testing, troubleshooting, automation, and documentation.
• Establish AI-assisted development practices leveraging prompt engineering and agentic workflows.
• Drive engineering excellence through code reviews, automated testing, performance tuning, observability, and production-readiness standards.
• Support modernization initiatives by transforming legacy applications into cloud-native, event-driven platforms.
• Mentor engineers and promote best practices in .NET development and responsible AI adoption.

Skills

.NET/C#

Kafka

REST APIs

Microservices

Event-Driven Architecture

Distributed Systems

GenAI tools

Jira & Confluence

Education

Bachelor's degree in Computer Science/Software Engineering or related field

Tools

IBM MQ

Splunk

JSON/XML

Caching & performance tuning

Observability & resiliency patterns

GCP/Kubernetes/Docker/CI-CD

Job description

Senior .NET AI Developer

Onsite work schedule in Austin or Southlake, TX

Opportunity

We are seeking a Senior .NET AI Developer to lead the development of scalable, cloud-native, event-driven applications while driving adoption of AI-assisted engineering practices across the SDLC. This role combines deep .NET expertise with cloud, messaging, and Generative AI technologies to deliver modern business solutions in a complex financial services environment.

Key Responsibilities

• Design, develop, and modernize distributed applications using .NET, Kafka, microservices, and cloud-native architectures .
• Build high-volume APIs and services that support business-critical workflows and transaction processing.
• Partner with architects, product owners, and engineering teams to deliver scalable, resilient solutions.
• Leverage GenAI tools (GitHub Copilot, Claude Code, Gemini, etc.) to accelerate development, testing, troubleshooting, automation, and documentation.
• Establish AI-assisted development practices leveraging prompt engineering, custom instructions, and agentic workflows.
• Drive engineering excellence through code reviews, automated testing, performance tuning, observability, resiliency, and production-readiness standards.
• Support modernization initiatives by transforming legacy applications into cloud-native, event-driven platforms.
• Mentor engineers and promote best practices in .NET development and responsible AI adoption.

Required Qualifications

• Bachelor's degree in Computer Science, Software Engineering, or related field (or equivalent experience).
• 7+ years of software engineering experience developing scalable .NET applications and web services.
• Strong expertise in:
  • .NET / C#
  • Kafka
  • REST APIs
  • Microservices
  • Event-Driven Architectures
  • Distributed Systems
• Experience with Kafka, IBM MQ, Splunk, JSON/XML, caching, performance tuning, observability, and resiliency patterns.
• Proven experience serving as a technical lead for projects or development teams.
• 6+ years of cloud-native development experience using GCP, Kubernetes, Docker, and CI/CD pipelines.
• Experience with AWS, GCP, or PCF deployment environments.
• Experience with MongoDB, PostgreSQL, Aerospike, or other relational and NoSQL databases.
• Experience supporting application modernization and technology transformation initiatives.
• Hands‑on experience with AI/ML implementations or AI-assisted software development practices.
• Experience using GenAI development tools such as GitHub Copilot, Claude Code, GPT, Gemini, or similar platforms.
• Knowledge of Agile methodologies and tools including Jira and Confluence.
• Strong communication, leadership, and collaboration skills.
• Financial services or broker‑dealer industry experience preferred.

Preferred Qualifications

• Master's degree in Computer Science, Software Engineering, Artificial Intelligence, or related field.
• Experience with TDD, BDD, QA automation, and quality engineering practices.
• Experience creating architecture diagrams, technical specifications, runbooks, and design documentation.
• Background in performance engineering, reliability testing, and operational readiness for distributed platforms.
• Experience with AI‑assisted SDLC transformation initiatives and developer productivity programs.
• Proven ability to mentor engineers on .NET, cloud-native development, distributed systems, and AI-enabled engineering practices.

Ideal Candidate

A hands‑on technical leader with deep .NET and cloud‑native development expertise, strong experience building event‑driven distributed systems, and a passion for leveraging Generative AI to improve engineering quality, productivity, and modernization outcomes.

EEO Employer

Apex Systems is an equal opportunity employer. We do not discriminate or allow discrimination on the basis of race, color, religion, creed, sex (including pregnancy, childbirth, breastfeeding, or related medical conditions), age, sexual orientation, gender identity, national origin, ancestry, citizenship, genetic information, registered domestic partner status, marital status, disability, status as a crime victim, protected veteran status, political affiliation, union membership, or any other characteristic protected by law. Apex will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable law. If you have visited our website in search of information on employment opportunities or to apply for a position, and you require an accommodation in using our website for a search or application, please contact our Employee Services Department at [email protected] or 844-463-6178.

Everforth Apex is a world‑class IT services company that serves thousands of clients across the globe. When you join Everforth Apex, you become part of a team that values innovation, collaboration, and continuous learning. We offer quality career resources, training, certifications, development opportunities, and a comprehensive benefits package. Our commitment to excellence is reflected in many awards, including ClearlyRateds Best of Staffing® in Talent Satisfaction in the United States and Great Place to Work® in the United Kingdom and Mexico.

Everforth Apex Benefits Overview: Everforth Apex offers a range of supplemental benefits, including medical, dental, vision, life, disability, and other insurance plans that offer an optional layer of financial protection. We offer an ESPP (employee stock purchase program) and a 401K program which allows you to contribute typically within 30 days of starting, with a company match after 12 months of tenure. Everforth Apex also offers a HSA (Health Savings Account on the HDHP plan), a SupportLinc Employee Assistance Program (EAP) with up to 8 free counseling sessions, a corporate discount savings program and other discounts. In terms of professional development, Everforth Apex hosts an on‑dem­and training program, provides access to certification prep and a library of technical and leadership courses/books/seminars once you have 6+ months of tenure, and certification discounts and other perks to associations that include CompTIA and IIBA. Everforth Apex has a dedicated customer service team for our Consultants that can address questions around benefits and other resources, as well as a certified Career Coach. You can access a full list of our benefits, programs, support teams and resources within our ‘Welcome Packet’ as well, which an Everforth Apex team member can provide.

Everforth Apex Systems is an equal opportunity employer. We do not discriminate or allow discrimination on the basis of race, color, religion, creed, sex (including pregnancy, childbirth, breastfeeding, or related medical conditions), age, sexual orientation, gender identity, national origin, ancestry, citizenship, genetic information, registered domestic partner status, marital status, disability, status as a crime victim, protected veteran status, political affiliation, union membership, or any other characteristic protected by law. Everforth Apex will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable law.

If you require an accommodation under the Americans with Disabilities Act to participate in an interview with a virtual recruiter or to use our website for a search or application, please contact our Benefits Department at [email protected] or 804-523-8228. Please note that this contact information is strictly to be used for medical ADA accommodations and that no other inquiries will be answered.

UnitedHealthcare creates and publishes the Transparency in Coverage Machine-Readable Files on behalf of Everforth Apex Systems.

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Everforth Apex Systems is part of the Commercial Segment of Everforth, Inc.

NYSE: EFOR

4400 Cox Road

Suite 200

Glen Allen, Virginia 23060

Everforth Apex is an equal opportunity employer. We do not discriminate or allow discrimination on the basis of race, color, religion, creed, sex (including pregnancy, childbirth, breastfeeding, or related medical conditions), age, sexual orientation, gender identity, national origin, ancestry, citizenship, genetic information, registered domestic partner status, marital status, disability, status as a crime victim, protected veteran status, political affiliation, union membership, or any other characteristic protected by law. Everforth Apex will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable law. If you have visited our website in search of information on employment opportunities or to apply for a position, and you require an accommodation in using our website for a search or application, please contact our Benefits Department at [email protected] or 804-523-8228. (Do not submit resumes or solicit consultants to this email address). UnitedHealthcare creates and publishes the Transparency in Coverage Machine-Readable Files on behalf of Everforth Apex.