Senior Full-Stack Developer (.NET & React, AWS)
full-time•Berlin
About this role
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
- Flexible working hours
- Inclusive and supportive culture
About Us
Established in 2011, Trinetix is a dynamic tech service provider supporting enterprise clients around the world.
Headquartered in Nashville, Tennessee, we have a global team of over 1,000 professionals and delivery centers across Europe, the United States, and Argentina. We partner with leading global brands, delivering innovative digital solutions across Fintech, Professional Services, Logistics, Healthcare, and Agriculture.
Our operations are driven by a strong business vision, a people-first culture, and a commitment to responsible growth. We actively give back to the community through various CSR activities and adhere to international principles for sustainable development and business ethics.
To learn more about how we collect, process, and store your personal data, please review our Privacy Notice: https://www.trinetix.com/corporate-policies/privacy-notice
What you'll do
- Develop and maintain end-to-end features across React front-end and .NET back-end services, building scalable APIs and business logic for fleet optimization workflows. Implement user-friendly interfaces, integrate applications with cloud infrastructure, and ensure code quality through reviews and testing.
About Trinetix
Trinetix is a global custom software development partner that brings ambitious ideas to life. We’ll help you transform the way your business operates, serves, navigates industry changes, and sets new market standards. We specialize in delivering design-forward, award-winning technology solutions. As your strategic technology partner, we’ll craft a tailored user experience that also drives top and bottom-line growth.
Our team of experts in AI, GenAI, machine learning, automation, mobile, cloud, user experience, and full platform and product development have delivered thousands of successful engagements over the past 14 years.
We’re ready for whatever challenge or transformation you’re looking to tackle.
Ready to explore the bounds of what’s possible? Visit us at www.trinetix.com to explore our offerings and results.
Ready to join Trinetix?
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Frequently Asked Questions
What does a Senior Full-Stack Developer (.NET & React, AWS) do at Trinetix?
As a Senior Full-Stack Developer (.NET & React, AWS) at Trinetix, you will: develop and maintain end-to-end features across React front-end and .NET back-end services, building scalable APIs and business logic for fleet optimization workflows. Implement user-friendly interfaces, integrate applications with cloud infrastructure, and ensure code quality through reviews and testing..
Is the Senior Full-Stack Developer (.NET & React, AWS) position at Trinetix remote?
The Senior Full-Stack Developer (.NET & React, AWS) position at Trinetix is based in Berlin, Germany. Contact the company through Clera for specific work arrangement details.
How do I apply for the Senior Full-Stack Developer (.NET & React, AWS) position at Trinetix?
You can apply for the Senior Full-Stack Developer (.NET & React, AWS) position at Trinetix directly through Clera. Click the "Apply Now" button above to start your application. Clera's AI-powered platform will help match your profile with this opportunity and guide you through the application process.