ExecutivePlacements.com
Senior Software Engineer
Mid-Senior level
Full-time
Engineering and Information Technology
Advertising Services
Waterbury, CT
$126,000 - $190,000
Job Summary The Senior Software Engineer is a focused, mid-level professional who develops and maintains Sentinel U's learning platform using modern web technologies across the full stack.
Essential Accountabilities
Design, develop, and maintain scalable web applications using React/TypeScript frontend and .NET backend
Build RESTful APIs using Core and integrate with cloud services
Implement responsive UI components using modern React patterns and component libraries
Write unit and integration tests to ensure code quality and reliability
Collaborate with cross-functional teams to deliver features
Participate in code reviews and maintain coding standards
Troubleshoot and debug production issues
Contribute to infrastructure-as-code and cloud deployment pipelines
Qualifications
5-10 years of professional software development experience
Strong proficiency in React and TypeScript
Solid experience with C# and .NET (Core)
Experience with modern frontend build tools (Vite preferred)
Experience with state management libraries (Redux Toolkit or similar)
Knowledge of RESTful API design and development
Experience with relational databases (PostgreSQL preferred)
Experience with Entity Framework Core or similar ORMs
Understanding of authentication/authorization patterns (JWT)
Experience with version control systems (Git)
Strong problem-solving and debugging skills
Good communication skills and ability to work in a team environment
Preferred Qualifications
Experience with AWS services (S3, ECS, DynamoDB, CloudWatch, Lambda)
Infrastructure-as-code experience (AWS CDK or Terraform)
Experience with Docker and containerized deployments
Experience with modern testing frameworks (Vitest, Playwright, React Testing Library)
Experience with UI component libraries (Ant Design, DevExtreme)
Experience with Storybook for component development
Familiarity with SCSS/Sass for styling
Experience with React Hook Form and form validation (Zod)
Experience with data visualization libraries
Knowledge of Stripe integration for payment processing
Experience with Serilog or similar structured logging frameworks
CI/CD pipeline experience (Bitbucket Pipelines or similar)
Understanding of microservices architecture patterns
Technical Stack Frontend
React 18, TypeScript, Vite
Redux Toolkit, React Router
Ant Design, DevExtreme
SCSS/Sass
Vitest, Playwright, Storybook
Backend
.NET 9.0, C#, Core Web API
Entity Framework Core, PostgreSQL
AWS Services (S3, ECS, DynamoDB, CloudWatch, Lambda)
JWT Authentication, Serilog
Infrastructure & DevOps
AWS CDK (TypeScript), Docker
Bitbucket Pipelines
Education Bachelor's degree in Computer Science, Software Engineering, or related field, or equivalent practical experience.
The requirements listed below represent the knowledge, skills, and/or abilities required. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions of the job.
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Full-time
Engineering and Information Technology
Advertising Services
Waterbury, CT
$126,000 - $190,000
Job Summary The Senior Software Engineer is a focused, mid-level professional who develops and maintains Sentinel U's learning platform using modern web technologies across the full stack.
Essential Accountabilities
Design, develop, and maintain scalable web applications using React/TypeScript frontend and .NET backend
Build RESTful APIs using Core and integrate with cloud services
Implement responsive UI components using modern React patterns and component libraries
Write unit and integration tests to ensure code quality and reliability
Collaborate with cross-functional teams to deliver features
Participate in code reviews and maintain coding standards
Troubleshoot and debug production issues
Contribute to infrastructure-as-code and cloud deployment pipelines
Qualifications
5-10 years of professional software development experience
Strong proficiency in React and TypeScript
Solid experience with C# and .NET (Core)
Experience with modern frontend build tools (Vite preferred)
Experience with state management libraries (Redux Toolkit or similar)
Knowledge of RESTful API design and development
Experience with relational databases (PostgreSQL preferred)
Experience with Entity Framework Core or similar ORMs
Understanding of authentication/authorization patterns (JWT)
Experience with version control systems (Git)
Strong problem-solving and debugging skills
Good communication skills and ability to work in a team environment
Preferred Qualifications
Experience with AWS services (S3, ECS, DynamoDB, CloudWatch, Lambda)
Infrastructure-as-code experience (AWS CDK or Terraform)
Experience with Docker and containerized deployments
Experience with modern testing frameworks (Vitest, Playwright, React Testing Library)
Experience with UI component libraries (Ant Design, DevExtreme)
Experience with Storybook for component development
Familiarity with SCSS/Sass for styling
Experience with React Hook Form and form validation (Zod)
Experience with data visualization libraries
Knowledge of Stripe integration for payment processing
Experience with Serilog or similar structured logging frameworks
CI/CD pipeline experience (Bitbucket Pipelines or similar)
Understanding of microservices architecture patterns
Technical Stack Frontend
React 18, TypeScript, Vite
Redux Toolkit, React Router
Ant Design, DevExtreme
SCSS/Sass
Vitest, Playwright, Storybook
Backend
.NET 9.0, C#, Core Web API
Entity Framework Core, PostgreSQL
AWS Services (S3, ECS, DynamoDB, CloudWatch, Lambda)
JWT Authentication, Serilog
Infrastructure & DevOps
AWS CDK (TypeScript), Docker
Bitbucket Pipelines
Education Bachelor's degree in Computer Science, Software Engineering, or related field, or equivalent practical experience.
The requirements listed below represent the knowledge, skills, and/or abilities required. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions of the job.
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