.net/C# Developer - Senior

Spectraforce Technologies, Inc.; Austin (TX); On-site; USD 120,000 - 180,000; Full time

Job summary

Spectraforce Technologies, Inc. is seeking a Senior .NET/C# Developer to design and deliver scalable, AI-assisted cloud-native services in a financial domain. You will build high-volume, reliable APIs and contribute to modernizing legacy systems with distributed .NET solutions.

The role emphasizes GenAI-assisted development, code reviews, and strong collaboration across engineering and product teams. Onsite 4 days weekly in Austin or Southlake, TX, with a 6-month contract.

Qualifications

• Bachelor's degree or equivalent practical experience in CS/SE.
• 5+ years building scalable .NET/cloud/web services for high-volume environments.
• Experience designing event-driven apps with .NET and Kafka; cloud-native knowledge.

Responsibilities

• Design and implement scalable, resilient .NET apps using event-driven patterns.
• Develop APIs and services with high-volume transaction processing.
• Collaborate with architects, product owners, and teams to translate requirements into technical solutions.
• Leverage GenAI coding assistants to speed implementation, testing, and documentation.
• Apply agentic workflows and prompt engineering to improve productivity.
• Improve quality through automated testing, code reviews, and observability.

Skills

.NET

Kafka

Cloud-native

AI/GenAI

CI/CD

Docker

Kubernetes

MongoDB

PostgreSQL

GCP

Education

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

Tools

IBM MQ

Kafka

Splunk

JSON/XML

Docker

Kubernetes

GitHub Copilot

Job description

Title:.net/C# Developer - Senior
Location: Onsite 4 days weekly in Austin or Southlake, TX
Duration: 6 Months

As a .NET Developer with AI experience, you will contribute to AI-assisted workflows across the System Development Life Cycle. You will work across .NET engineering, event-driven architecture, cloud-native platforms, and Generative AI-assisted delivery to build reliable business solutions in a complex financial domain.

What You Have

Key Responsibilities

• Contribute to the design and implementation of scalable, resilient, and event-driven applications using .NET, Kafka, and cloud-native architecture patterns.
• Build and modernize high-volume services, APIs, and distributed application capabilities that support reliable transaction processing and business-critical workflows.
• Partner with architects, product owners, developers, and adjacent technology teams to convert business capabilities into high-quality technical solutions.
• Use GenAI coding assistants to accelerate implementation, refactoring, unit testing, regression support, code reviews, scripting, automation, troubleshooting, and documentation while maintaining ownership for correctness and quality.
• Use agentic workflows, prompt engineering, custom instructions, and spec-driven development practices to improve individual and team productivity.
• Strengthen engineering quality through automated testing, disciplined code reviews, performance analysis, observability, resiliency practices, and production readiness.
• Support modernization initiatives by moving legacy capabilities toward distributed .NET services, cloud-native platforms, event-driven architecture, and modern data stores.
• Collaborate with engineers in a team-oriented environment and help adopt repeatable, responsible AI-assisted development practices.

Required Qualifications

• Bachelor's degree in Computer Science, Software Engineering, or related technical field, or equivalent practical experience.
• 5+ years of professional software engineering experience developing scalable .NET, cloud-based, or web services applications that support high-volume transactions in highly available environments.
• Hands-on experience designing and implementing scalable, resilient, and event-driven applications using .NET and Kafka, with knowledge of distributed systems, stream processing, performance optimization, and cloud-native architectures.
• Working experience with IBM MQ, Kafka, Splunk, JSON/XML, caching, performance analysis and profiling, Twelve-Factor App methodology, resiliency patterns, and observability patterns.
• Experience owning technical components or features and collaborating effectively within a software delivery team.
• 4+ years of experience building and deploying cloud-native applications using GCP, Docker, Kubernetes, microservices, and CI/CD practices.
• Experience with cloud platforms and deployment environments such as PCF, AWS, or GCP.
• 2+ years of experience working with databases such as MongoDB, Aerospike, PostgreSQL, or comparable relational and NoSQL platforms.
• Experience contributing to IT transformation or system modernization initiatives involving legacy platforms, distributed .NET applications, or modern data platforms.
• 1+ years of hands-on experience with AI/ML implementation, production deployment, or AI-assisted engineering practices.
• Hands-on experience or practical exposure to Large Language Models such as GPT, Claude, Gemini, PaLM, or comparable enterprise AI platforms.
• Demonstrated hands-on experience using GenAI coding assistants across SDLC workflows, including implementation, refactoring, unit testing, regression support, code reviews, scripting, automation, troubleshooting, and documentation.
• Practical familiarity with tools such as GitHub Copilot and/or Claude Code in IDE or CLI-based workflows, with the ability to apply AI assistance to reduce context switching and accelerate delivery beyond code generation.
• Working knowledge of agentic workflows, spec-driven development, custom instructions, and prompt engineering, with the ability to apply effective AI-assisted development practices.
• Knowledge of Agile methodology and experience in an Agile working environment.
• Experience with the Atlassian tool stack, including Jira and Confluence.
• Domain / Industry: Understands broker-dealer domain capabilities and operations, with preferred experience in the financial services industry.
• Communication: Communicates clearly and effectively, with proven ability to collaborate with engineers and cross-functional partners in a team-oriented environment.
• Execution Focus: Brings a collaborative mindset and bias for action, effectively partnering with developers, architects, and adjacent teams to drive outcomes.

Preferred Qualifications

• Master's degree in Information Technology, Computer Science, Software Engineering, Artificial Intelligence, or related degree, or equivalent practical experience.
• Experience in Test Driven Development, Behavior Driven Development, QA automation, and quality engineering mindset and behaviors.
• Proficient in creating architecture diagrams, design documentation, functional and technical specifications, automated test process documentation, runbooks, and production/test environment documentation.
• Experience with performance engineering, reliability testing, resiliency validation, and operational readiness for high-volume distributed platforms.
• Exposure to AI-assisted SDLC transformation initiatives, internal developer productivity programs, or enterprise AI implementation patterns.
• Experience supporting or mentoring peers on .NET engineering practices, cloud-native implementation, distributed systems, or responsible AI-assisted software delivery.