Software Engineer III Full-stack

Design, develop, test, and ship production‑grade software across backend services and front‑end applications. 

Build and operate cloud‑native solutions in AWS with a focus on reliability, scalability, and performance. 

Develop and maintain backend services primarily in .NET/C#. 

Contribute to front‑end development, including component design and API integration. 

Implement and support CQRS patterns, separating command and query responsibilities where appropriate. 

Leverage AI-assisted coding tools (including Copilot CLI, Claude Code, Codex) to:

Accelerate feature delivery 

Refactor and improve existing code 

Generate and improve tests 

Support documentation 

Actively develop and manage agent-driven coding workflows, where multiple AI agents are used to build, test, and iterate on features in parallel 

Continuously refine code through AI feedback loops, using iterative prompting, validation, and improvement cycles. 

Validate and audit AI-generated code for accuracy, security, and maintainability, applying strong engineering judgment and testing discipline. 

Establish and maintain guardrails, validation patterns, and review processes to ensure safe and reliable use of AI-generated output. 

Context switch effectively across multiple parallel workstreams and AI agents, maintaining clarity on feature ownership, dependencies, and outcomes 

Collaborate closely with Product, QA, and fellow engineers to deliver high‑quality outcomes. 

Participate in code reviews and contribute to engineering standards and best practices. 

Ensure security, compliance, and quality considerations are embedded in every layer of the stack 

Mentor and support other engineers as needed through pairing, feedback, and knowledge sharing. 

Strong experience building and maintaining production software systems. 

Full-stack development with strong backend (.NET/C#) and frontend (React) capabilities 

Hands-on experience with relational and document databases at scale, including schema design, query optimization, and diagnosing performance issues in production. 

Proficiency with AWS services (EC2/ECS/EKS, S3, IAM, Lambda, RDS/DynamoDB, etc.). 

Demonstrated, day‑to‑day use of AI‑assisted coding tools to deliver real software—not just experimentation. 

Ability to clearly explain how you validate, test, and take ownership of code. 

Strong communication skills and the ability to collaborate effectively in a team environment. 

This position will be exposed mainly to an indoor office environment and will be expected to work in or around computers and printers. 

The nature of the work is sedentary, and the employee will be sitting most of the time. 

Essential physical functions of the job include typing and the repetitive motion to utilize computer software and hardware continuously throughout the day. 

Essential mental functions of this position include concentrating on analytical tasks, reading information, and verbal/written communication to others continuously throughout the day. 

This job description documents the general nature and level of work but is not intended to be a comprehensive list of activities, duties, or responsibilities required for this position.  Consequently, employee’s may be asked to perform other duties as required.  

Employees may also be asked to complete certain compliance requirements set forth by our Business Partners in the performance of their jobs including but not limited to requests for background and drug screenings and disclosures of personal health information or personally identifiable information. Exemptions as provided under the ADA and TITLE VII of the Civil Rights Act will be observed and followed.  

Reasonable accommodations may be made to enable individuals with disabilities to perform the functions outlined above.