Freelance React Native Developer Jobs in Delaware

Interested in joining our Software Team?

At TA Instruments, we're looking for creative and innovative engineers who bring fresh ideas from all areas, including data processing, distributed computing, large-scale system design, networking and data storage, security, UI design and mobile—the list goes on and is growing every day. We encourage all our engineers to constantly add value to themselves and the business through learning and collaboration.

We are seeking a Sr. Principal Software Engineer to lead the development and architecture of an innovative platform incorporating advanced AI capabilities. This is a high-impact role requiring deep technical expertise, strategic thinking, and leadership in building scalable, secure, and high-performance cloud-native applications.

This is a hybrid position requiring on-site work for three days a week.

As a Sr. Principal Software Engineer, you will:

• Lead the architecture and design of a new SaaS platform with integrated AI/ML capabilities.
• Define and drive the technical roadmap, ensuring alignment with business goals and scalability requirements.
• Research, design, develop, and maintain applications, user interfaces, data analysis tools, and instrument control software for thermal analysis, rheological, and calorimetric instruments.
• Evaluate system specifications and translate system requirements into detailed technical designs.
• Provide architectural guidance and mentorship to engineering teams across the full development lifecycle.
• Collaborate with cross-functional teams to ensure seamless integration of AI models and services into the SaaS platform.
• Ensure software quality through code reviews, automated testing, and adherence to SOLID principles and secure coding practices.
• Contribute to the application architecture with a focus on scalability, maintainability, security, and performance.
• Support current programs, including performance tuning, troubleshooting, and enhancements.
• Provide technical support to internal and external users as needed. 

 As a Team Member you will:

• Participate in agile ceremonies and collaborate with global teams.
• Share knowledge through demos, documentation, and mentoring.
• Demonstrate continuous technical improvement and thought leadership.

• Bachelor’s Degree preferred, or equivalent combination of education, training, and experience
• 12+ years of experience in software engineering, preferably in a regulated development environment.
• 3+ years of technical leadership experience, guiding software teams through architecture, design, and delivery of complex software solutions
• 5+ years of proven experience designing and architecting SaaS solutions, including multi-tenant architecture, CI/CD pipelines, and cloud-native services with major cloud service providers such as AWS, Azure, or Google.
• Strong experience with C#, .NET Core, and object-oriented design.
• Front-end development expertise using React or Angular with TypeScript.
• Proficiency in web technologies: HTML, CSS, REST APIs.
• Hands-on experience with AWS or Azure Cloud, Docker containers, and microservices.
• Familiarity with development tools such as JIRA, Visual Studio, VS Code, GitHub, YAML, Confluence, and Datadog.
• Experience integrating AI/ML models into production systems is a strong plus.
• Strong understanding of software security best practices and implementation.

Desired / Nice To Have:

• Experience in analytical or medical device domains.
• Knowledge of TCP/IP sockets and RS232-serial communications.
• Experience with Azure DevOps, GitHub, BDD (Gherkin & SpecFlow), and continuous delivery pipelines.
• Ability to create roadmaps, manage risks, and communicate progress to stakeholders.
• Experience bridging technical and non-technical teams.
• Background in cross-functional product development involving hardware and software components.

Waters Corporation (NYSE:WAT) is a global leader in life sciences and diagnostics, dedicated to accelerating the benefits of pioneering science through analytical technologies, informatics, and service. With a focus on regulated, high-volume testing environments, our innovative portfolio harnesses deep scientific expertise across chemistry, physics, and biology. We collaborate with customers around the world to advance the release of effective, high-quality medicines, ensure the safety of food and water, and drive better patient outcomes by detecting diseases earlier, managing routine infections, and combating antibiotic resistance. Through a shared culture of relentless innovation, our passionate team of ~16,000 colleagues turn scientific challenges into breakthroughs that improve lives worldwide. 

Diversity and inclusion are fundamental to our core values at Waters Corporation. It benefits our employees, our products, our customers and our community. Waters complies with all applicable federal, state, and local laws. Qualified applicants are considered without regard to sex, race, color, ancestry, national origin, citizenship status, religion, age, marital status (including civil unions), military service, veteran status, pregnancy (including childbirth and related medical conditions), genetic information, sexual orientation, gender identity, legally recognized disability, domestic violence victim status, or any other characteristic protected by law. Waters is proud to be an equal opportunity workplace and is an affirmative action employer. All hiring decisions are based solely on qualifications, merit, and business needs at the time.