Senior Full-Stack Engineer – Mobile & AI

Position Title: Senior Mobile & AI Engineer (AWS, LLM, RAG)

Location: Capitol Heights Maryland

Clearance Requirements: None

Position Status: Full Time

Pay Rate: $130K - 140K/Annum

Position Description:

We are seeking a Senior Mobile & AI Engineer with a strong foundation in mobile application development, cloud-native architecture, and Generative AI. This role is ideal for a hands-on engineer who thrives at the intersection of UI/UX, AWS serverless technologies, and LLM-powered applications.

You will design, build, and deploy scalable, high-performance applications leveraging Large Language Models (LLMs) and Retrieval-Augmented Generation (RAG) pipelines. This is an opportunity to work on cutting-edge AI-driven products while owning the full development lifecycle—from concept to production.

Key Responsibilities:

• Design and develop scalable mobile and web applications with a strong focus on performance and usability
• Architect and implement cloud-native solutions using AWS serverless technologies (Lambda, API Gateway, DynamoDB, etc.)
• Build and optimize LLM-based applications, including RAG pipelines for intelligent data retrieval and generation
• Collaborate cross-functionally with product, design, and engineering teams to deliver intuitive, high-quality user experiences
• Apply strong UI/UX principles to create visually appealing and user-friendly interfaces
• Integrate and leverage AI-assisted development tools to accelerate delivery and innovation
• Ensure code quality through testing, code reviews, and adherence to best practices
• Stay current with emerging trends in Generative AI, cloud computing, and mobile development

Required Skills/Education:

• 4–6+ years of experience in mobile or full-stack application development
• 5+ years of hands-on experience with AWS cloud services and serverless architecture
• Proven experience building and deploying applications using Large Language Models (LLMs) and RAG pipelines
• Strong understanding of UI/UX design principles and modern frontend development
• Experience with REST APIs, microservices architecture, and cloud integrations
• Proficiency in one or more modern programming languages (JavaScript/TypeScript, Python, etc.)
• Strong problem-solving skills and ability to work in a fast-paced, agile environment

Nice to Have:

• Experience with React Native and a track record of shipping apps to the App Store or Google Play
• Recent hands-on use of AI-assisted coding tools (e.g., Cursor, Claude, Copilot)
• Experience working with big data technologies (e.g., Spark, Hadoop, data pipelines)
• Familiarity with CI/CD pipelines and DevOps practices

About Seneca Resources

At Seneca Resources, we are more than just a staffing and consulting firm—we are a trusted career partner. With offices across the U.S. and clients ranging from Fortune 500 companies to government organizations, we provide opportunities that help professionals grow their careers while making an impact.

When you work with Seneca, you’re choosing a company that invests in your success, celebrates your achievements, and connects you to meaningful work with leading organizations nationwide. We take the time to understand your goals and match you with roles that align with your skills and career path.

Our consultants and contractors enjoy competitive pay, comprehensive health, dental, and vision coverage, 401(k) retirement plans, and the support of a dedicated team who will advocate for you every step of the way.

Seneca Resources is proud to be an Equal Opportunity Employer, committed to fostering a diverse and inclusive workplace where all qualified individuals are encouraged to apply.