> Markdown version of [/jobs/ext/4321877-senior-net-full-stack-developer-aws](https://www.wearedevelopers.com/jobs/ext/4321877-senior-net-full-stack-developer-aws). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior .NET Full Stack Developer - AWS - **Company:** SFE PARTNERS LLC - **Location:** Owings Mills, MD, United States - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** JavaScript (Programming Language), .NET Framework, Amazon Web Services, Amazon Elastic Compute Cloud, Amazon S3, Component-Based Software Engineering, Application Performance Management, HTML5, Audit Trail, Build Automation, Unit Testing, C Sharp (Programming Language), Cascading Style Sheets (CSS), Cloud Engineering, Software Quality, Code Review, Cyber Security, Databases, Continuous Integration, Dependency Injection, Software Design Patterns, DevOps, Language Integrated Query, Amazon DynamoDB, Entity Framework, Identity and Access Management, PostgreSQL, Microsoft Software, Microsoft SQL Server, Model View Controller (MVC), .NET Framework 4, OAuth, Performance Tuning, Query Optimization, Role-Based Access Control, Openid Connect, JSON Web Token, Responsive Web Design, Secure Coding, Amazon Simple Notification Service (SNS), Software Engineering, SQL Stored Procedures, Systems Integration, Strategies of Testing, TypeScript, Software Vulnerability Management, Openapi, AWS Cdk, .NET Core, ReactJS, Software Security, Indexer, Git, Cloudformation, Servicebus, Amazon Relational Database Service, AngularJS, Integration Tests, Kubernetes, Deployment Automation, Windows Services, Asynchronous Programming, Functional Programming, Cloudwatch, Api Gateway, Software Coding, Restful APIs, Amazon Simple Queue Service (SQS), Docker, Legacy Systems, Web Api, Microservices - **Published:** October 26, 2026 - **Apply:** https://www.careerjet.com/jobad/usa8f69ed8f5066cb81d8be9eb8554d7df ## About the Role Must Have Technical/Functional Skills 10+ years of hands-on experience in application design, development, integration, testing, deployment, and production support using Microsoft technologies. Strong experience with modern .NET, including .NET 10, .NET 9, and .NET 8, along with earlier .NET and .NET Core versions used in legacy applications. Strong hands-on experience with .NET Framework 4.x, MVC, Web API, Windows Services, and legacy application maintenance or modernization. Advanced proficiency in C#, Core, Web API, Entity Framework Core, LINQ, dependency injection, asynchronous programming, and design patterns. Full-stack development experience using Angular or React, TypeScript, JavaScript, HTML5, CSS3, responsive design, and reusable component development. Experience designing and implementing RESTful APIs, microservices, event-driven solutions, and secure system integrations. Hands-on AWS experience with EC2, ECS or EKS, Lambda, API Gateway, S3, RDS, DynamoDB, SQS, SNS, EventBridge, CloudWatch, Secrets Manager, IAM, and CloudFormation or AWS CDK. Experience containerizing applications with Docker and deploying workloads through Kubernetes or AWS-managed container services. Strong database skills using SQL Server and PostgreSQL, including schema design, stored procedures, query tuning, indexing, and performance optimization. Experience with CI/CD pipelines, Git, automated builds, code quality controls, unit testing, integration testing, and deployment automation. Working knowledge of application security, OAuth 2.0, OpenID Connect, JWT, RBAC, encryption, secure coding, vulnerability remediation, and audit logging. Experience working in Agile delivery environments and collaborating with architecture, security, infrastructure, QA, operations, and business teams. Strong analytical, troubleshooting, written communication, and stakeholder-management skills., Experience leading technical delivery for small to medium teams in an onsite-offshore model. Ability to estimate work, plan delivery, manage dependencies, and proactively address risks and issues. Strong customer-facing communication, presentation, negotiation, and stakeholder-management skills. Ability to mentor team members and promote engineering discipline, documentation, and continuous improvement. ## Description Lead the design and development of scalable, secure, and maintainable .NET full-stack applications. Develop and enhance back-end services using C#, Core, Web API, Entity Framework Core, and appropriate integration patterns. Develop responsive front-end applications using Angular or React and ensure a consistent user experience across supported browsers and devices. Modernize legacy .NET Framework applications by assessing dependencies, defining migration approaches, and incrementally transitioning workloads to supported .NET versions and cloud-native architectures. Design and implement AWS solutions using managed compute, storage, database, integration, monitoring, identity, and security services. Create technical designs, solution diagrams, API specifications, coding standards, test strategies, deployment plans, and support documentation. Build and maintain automated CI/CD pipelines, infrastructure-as-code templates, quality gates, and release processes. Perform code reviews, enforce engineering standards, mentor developers, and support technical decision-making. Optimize application performance, reliability, observability, scalability, and cloud cost efficiency. Investigate production issues, complete root-cause analysis, implement corrective actions, and improve monitoring and alerting. Collaborate with product owners, ar chitects, QA, DevOps, cybersecurity, data, operations, and business stakeholders. Lead a small to medium development team in an onsite-offshore delivery model and provide transparent status, risk, dependency, and issue reporting.