Full Stack Developer

Yulista Holding, LLC; Huntsville (AL); On-site; USD 110,000 - 140,000; Full time

Job summary

Calista Corporation IT department is seeking a seasoned full-stack developer to build and maintain cloud-native microservices and modern web applications. You’ll work across the stack from React/TypeScript frontends to .NET APIs and GraphQL federation, delivering containerized apps on Azure Kubernetes Service.

The role emphasizes clean APIs, thoughtful UI/UX, and collaboration across teams, with opportunities to modernize enterprise integrations and internal tools.

Qualifications

• Bachelor's degree in Computer Science, Software Engineering, or equivalent experience.
• 6+ years of hands-on software development experience.
• Experience building web apps with JavaScript/TypeScript frameworks.
• Experience building backend APIs with C#/.NET or similar languages.
• Experience with containerized apps in a cloud environment.

Responsibilities

• Develop and maintain backend APIs using C# and .NET, following microservices patterns.
• Build responsive web applications using React, TypeScript, and modern tooling.
• Design GraphQL schemas, queries, and mutations using Apollo Federation.
• Write and optimize SQL Server queries, stored procedures, and schemas.
• Containerize apps with Docker and deploy to Azure Kubernetes Service.
• Implement authentication via MSAL and Azure AD.
• Collaborate in code reviews and Agile ceremonies.
• Troubleshoot across the full stack and write automated tests.
• Integrate with enterprise systems and maintain UI/UX quality.

Skills

C#/.NET

React/TypeScript

GraphQL APIs

SQL Server

Azure AKS

Docker

MSAL/Azure AD

CI/CD

Azure cloud

Unit/Automated tests

Education

Bachelor's degree in CS/Software Engineering

Tools

Docker

Kubernetes

Azure

GitLab

Job description

Job Summary

Serve as a full stack developer on the Innovation Factory team, building and maintaining cloud-native microservices and modern web applications. You will work across the entire stack—from React/TypeScript frontends to .NET backend APIs to GraphQL federation layers delivering containerized applications that run in Azure Kubernetes Service. This role contributes directly to Calista’s next generation of internal tools and enterprise integrations, helping modernize how the business operates through well-architected software, clean APIs, and thoughtful UI/UX design.

Essential Functions

• Develop and maintain backend APIs using C# and .NET, following microservices architecture patterns
• Build responsive, accessible web applications using React, TypeScript, and modern frontend tooling
• Design and implement GraphQL schemas, queries, and mutations using Apollo Federation
• Write and maintain SQL Server queries, stored procedures, and database schemas
• Containerize applications using Docker and deploy to Azure Kubernetes Service
• Implement authentication flows using Microsoft Identity (MSAL) and Azure AD
• Participate in code reviews, technical discussions, and Agile ceremonies
• Collaborate with team members to troubleshoot issues across the full stack
• Write automated tests to ensure code quality and application reliability
• Integrate with enterprise systems such as Workday, Costpoint, and Microsoft 365

Supervisory Functions

This position does not have supervisory responsibilities.

Knowledge, Skills, & Abilities

• Extensive experience building software integrations
• Strong proficiency in C#/.NET or TypeScript/React with willingness to work across both
• Hands‑on experience building and consuming GraphQL APIs (Apollo, HotChocolate, or similar)
• Experience with React (hooks, functional components, state management), Bootstrap/React Bootstrap, and modern frontend tooling (Vite, npm)
• Working knowledge of SQL Server (queries, schema design, stored procedures)
• Understanding of containerization (Docker) and orchestration concepts (Kubernetes)
• Familiarity with Azure cloud services (AKS, ACR, Key Vault, Blob Storage, Managed Identity)
• Knowledge of reverse proxy and API gateway patterns (YARP, nginx, or similar)
• Knowledge of Microsoft Identity Platform (MSAL, Azure AD) for authentication
• Experience with testing frameworks such as Playwright, Vitest, Jest, or xUnit
• Experience with Kendo UI, Telerik, or similar commercial UI component libraries
• Understanding of application observability (tracing, metrics, logging) using tools like OpenTelemetry, Prometheus, or Azure Monitor
• Understanding of CI/CD pipelines and GitLab or similar platforms
• Experience with Azure Government Cloud and M365 GCCHigh is a plus
• Clear, effective communication skills and ability to collaborate with cross‑functional teams

Minimum Qualifications

• Bachelor's degree in Computer Science, Software Engineering, or equivalent experience
• 6+ years of hands‑on software development experience
• Familiarity with CI/CD pipelines and GitLab or similar platforms
• Demonstrated experience building web applications with modern JavaScript/TypeScript frameworks
• Demonstrated experience building backend APIs with C#/.NET or other object‑oriented languages
• Experience working with containerized applications in a cloud environment
• Must be eligible to obtain a security clearance if required

Working Environment

Calista Corporation IT department is a fast paced, multi‑tasking, customer service oriented office environment requiring a high degree of efficient and effective performance. Adaptability regarding schedule and task changes is necessary to accommodate changing priorities. Overtime will be necessary at times.

EEO Statement

Additionally, it is our policy to select, place, train and promote the most qualified individuals based upon relevant factors such as work quality, attitude and experience, so as to provide equal employment opportunity for all employees in compliance with applicable local, state and federal laws and without regard to non‑work related factors such as race, color, religion/creed, sex, national origin, age, disability, marital status, veteran status, pregnancy, sexual orientation, gender identity, citizenship, genetic information, or other protected status. When applicable, our policy of non‑discrimination applies to all terms and conditions of employment, including but not limited to, recruiting, hiring, training, transfer, promotion, placement, layoff, compensation, termination, reduction in force and benefits.

Reasonable Accommodation

It is Calista and Subsidiaries' business philosophy and practice to provide reasonable accommodations, according to applicable state and federal laws, to all qualified individuals with physical or mental disabilities.