Full Stack Developer (C# / .NET / React)

Caltek Staffing

San Diego, CA

JOB DETAILS
SKILLS
AWS Lambda, Amazon Web Services (AWS), Application Programming Interface (API), Best Practices, Cloud Applications, Cloud Computing, Code Reviews, Communication Skills, Continuous Improvement, Cross-Functional, Customer Relations, Data Sets, Establish Priorities, GitHub, GraphQL, Identify Issues, JavaScript, Microservices, Microsoft .NET, Microsoft C# (C Sharp), Performance Tuning/Optimization, Problem Solving Skills, Query Optimization, REST (Representational State Transfer), React.js, SQL (Structured Query Language), Scalable System Development, Software Engineering, Software as a Service (SaaS), Team Building, Team Player, Time Management
LOCATION
San Diego, CA
POSTED
30+ days ago

Full Stack Developer (C# / .NET / React)

Location: San Diego, CA (Hybrid – 2 days onsite)
Compensation: $110,000 – $120,000 + bonus + benefits


About the Role

We are seeking a skilled Full Stack Developer to join a collaborative, high-performing engineering team building modern, scalable applications on AWS.

In this role, you'll design, develop, and maintain full-stack solutions that power both internal systems and customer-facing platforms. You'll work in an environment that values clean code, strong architecture, and continuous improvement.

This is an excellent opportunity for someone who thrives in a fast-moving, agile environment and enjoys solving real-world problems with scalable technology.


️ Key Responsibilities

  • Design, develop, and maintain full-stack applications using modern technologies
  • Build responsive, user-friendly interfaces using React / Next.js and TypeScript
  • Develop robust backend services using C# and .NET (6+)
  • Write clean, scalable, and well-tested code following best practices
  • Optimize and troubleshoot SQL queries across complex datasets
  • Design and integrate REST and/or GraphQL APIs
  • Participate in code reviews and contribute to engineering standards
  • Collaborate with cross-functional teams on architecture and technical decisions
  • Prioritize and manage tasks to meet project deadlines
  • Continuously evaluate and adopt new technologies to improve systems

✅ Required Qualifications

  • 3+ years of experience in full stack development
  • Strong proficiency in:
    • C# / .NET (6+)
    • React or Next.js
    • TypeScript / JavaScript
    • SQL (query optimization, performance tuning)
  • Experience working with RESTful or GraphQL APIs
  • Familiarity with GitHub and modern development workflows
  • Strong problem-solving and communication skills
  • Ability to work independently in a hybrid/remote environment
  • Must be authorized to work in the U.S. (no sponsorship available)

⭐ Preferred Qualifications

  • Experience building or supporting SaaS platforms
  • Exposure to AWS cloud services, especially serverless:
    • AWS Lambda
    • DynamoDB
    • Step Functions
  • Familiarity with microservices or event-driven architecture
  • AWS Certification (Solutions Architect – Associate or higher)
  • Experience in the retail energy industry (a plus, not required)

Why Join Us?

  • Work on modern, cloud-native applications with real-world impact
  • Collaborative team that values ownership, quality, and innovation
  • Opportunity to grow your skills with cutting-edge technologies
  • Fast-paced environment where your contributions matter

Work Environment

  • Hybrid schedule: 2 days onsite in San Diego, CA
  • Flexible, results-driven culture

Apply Today

If you're a driven Full Stack Developer looking to build scalable systems and grow your career, we'd love to hear from you.

About the Company

C

Caltek Staffing