Senior Full-Stack Developer (.NET, React, AWS)

Description

We are seeking a Senior Full-Stack Developer to build and evolve scalable, cloud-native applications that support fleet optimization and operational efficiency across a large-scale vehicle network of 46,000+ assets in 545+ locations. You will work hands-on across front-end and back-end systems, collaborating closely with product, architecture, data, and business stakeholders to deliver high-quality solutions deployed on AWS. 
 

Requirements 

• 5+ years of experience in full-stack software development 
• Strong hands-on experience with .NET (C#) for backend services and APIs 
• Solid experience building modern front-end applications using React 
• Proven experience designing and consuming RESTful APIs 
• Good understanding of cloud-native application development on AWS 
• Experience working with relational and/or NoSQL databases 
• Strong understanding of software engineering best practices (clean code, testing, performance, security) 
• Experience working in agile, cross-functional teams 
• Ability to collaborate effectively with architects, data engineers, and business stakeholders 

Nice-to-haves 

• Experience with microservices architectures 
• Familiarity with AWS services such as ECS/Fargate, Lambda, API Gateway, S3, SNS/SQS 
• Experience with event-driven architectures 
• Exposure to CI/CD pipelines and Infrastructure as Code (Terraform or CloudFormation) 
• Experience integrating frontend applications with data or analytics platforms 
• Familiarity with authentication and authorization mechanisms (OAuth2, JWT, enterprise SSO) 
• Experience working with high-load or enterprise-scale systems 

Core Responsibilities 

• Develop and maintain end-to-end features across React front-end and .NET back-end services 
• Build scalable, maintainable APIs and business logic supporting fleet optimization workflows 
• Implement responsive, user-friendly interfaces with a strong focus on performance and usability 
• Integrate applications with cloud infrastructure, data platforms, and enterprise systems 
• Collaborate with Solution Architects to implement architectural patterns and best practices 
• Ensure code quality through reviews, automated testing, and adherence to engineering standards 
• Troubleshoot, optimize, and improve system performance, reliability, and scalability 
• Support deployments and production operations on AWS 
• Work closely with product and business teams to translate requirements into production-ready solutions 

What we offer   

• Continuous learning and career growth opportunities 
• Professional training and English/Spanish language classes   
• Comprehensive medical insurance 
• Mental health support 
• Specialized benefits program with compensation for fitness activities, hobbies, pet care, and more 
• Flexible working hours 
• Inclusive and supportive culture