Full Stack Developer
First seen by Alion on Sep 11, 2026.
Full Stack Developer
React + .NET Core | AI - Augmented Platform
About the Role:
We're looking for a Full Stack Developer to join our engineering team building a modern, AI - augmented web platform. You'll work across a React/TypeScript frontend, a .NET 8 backend, and a Python - based recommendation microservice powered by vector embeddings - contributing to a system that combines traditional transactional workflows with semantic search and AI - driven recommendations.
Key Responsibilities:
- Design, build, and maintain responsive user interfaces using React with TypeScript, ensuring performance, accessibility, and a consistent UX across devices.
- Develop scalable, secure REST APIs using ASP.NET Core 8 and Entity Framework Core, handling data access, business logic, and integration layers.
- Work with PostgreSQL 18, including schema design, query optimization, and integration of the pgvector extension for vector embeddings and semantic similarity search.
- Collaborate with the AI/ML team on the FastAPI (Python) microservice responsible for embedding generation and vector - based recommendations - consuming its APIs from the .NET backend and React frontend.
- Implement secure, scalable file upload/storage workflows using AWS S3 (documents, images, and other assets).
- Integrate a third - party OTP service for authentication/verification flows.
- Implement structured application logging, diagnostics, and monitoring using Serilog, contributing to observability and faster incident triage.
- Build responsive, consistent UI layouts using CSS and Bootstrap 5.3.8.
- Write clean, maintainable, well - tested code; participate in code reviews, sprint planning, and technical design discussions.
- Collaborate with backend, frontend, DevOps, and QA teams to ensure smooth, high - quality releases.
- Troubleshoot and resolve production issues across the stack, from UI rendering to API performance to database query behavior.
Required Skills & Qualifications:
- 4 - 5 years of professional experience in full stack web development.
- Strong hands - on experience with React and TypeScript, including component architecture, state management, and API integration.
- Solid experience with ASP.NET Core (.NET 8 or recent versions) and Entity Framework Core for building REST APIs and data access layers.
- Working knowledge of PostgreSQL, including relational schema design and query optimization; exposure to pgvector or vector/embedding - based search is a strong plus.
- Familiarity with microservice architectures and consuming APIs built in other stacks (e.g., Python/FastAPI services) is a plus.
- Experience integrating cloud storage services, ideally AWS S3.
- Experience with structured logging frameworks (Serilog or equivalent) and application monitoring practices.
- Proficiency in CSS and responsive frameworks, specifically Bootstrap 5.x.
- Understanding of secure authentication/verification flows (OTP - based or similar).
- Strong understanding of REST API design principles, Git - based version control, and CI/CD workflows.
- Good problem - solving skills and ability to work across the full stack independently.
Good to Have:
- Prior exposure to AI/ML - adjacent systems - vector databases, embeddings, or recommendation engines.
- Experience with cloud infrastructure (AWS) beyond S3 (e.g., basic familiarity with Lambda, EC2, or IAM).
- Experience working in Agile/Scrum teams.
Tech Stack Snapshot:
- Frontend: React with TypeScript
- Backend: .NET 8 Core with Entity Framework Core
- Database: PostgreSQL 18 with pgvector extension
- Embeddings & Recommendations: FastAPI (Python) microservice
- File Storage: AWS S3
- OTP Service: Client - selected provider (TBD)
- Logging: Serilog
- Styling: CSS, Bootstrap 5.3.8
Skills
Full Stack, React.js, .Net, .Net Core, Python, TypeScript, PostgreSQL, ASP, Entity Framework, AWS