Sr. Full Stack Engineer

TogetherWork is seeking a Senior Full Stack Engineer to design, build, and maintain SaaS applications across the front end, back end, and databases. The role owns features from design through production, mentors junior engineers, and partners with product and engineering teams to deliver secure, scalable, reliable software.

Responsibilities:

• Develop and maintain features for our SaaS applications
• Write clean, well-documented, and testable code that’s reusable and scalable
• Mentor junior-level engineers within the team
• Participate in code reviews – learn & implement best practices to improve code quality
• Develop and maintain front-end and back-end components of applications
• Collaborate with Product Managers to understand requirements
• Leverage industry-standard development tools, integrated development environments (IDEs), and AI-assisted tools to enhance productivity and code quality
• Collaborate with Product Owners to refine requirements, including non-functional ones
• Troubleshoot, debug, and resolve issues across non-production and production environments
• AI-Augmented Development. Use approved AI tools as active tools in your daily workflow to accelerate coding. Evaluate AI-generated code critically and refine it for production readiness
• Security & Authorization. Implement secure authentication and authorization flows for embedded reporting (e.g., token-based access, signed URLs, role-based permissions). Ensure proper handling of keys, tokens, and sensitive data in compliance with security best practices
• Quality and Stability. Implement monitoring, logging, and testing strategies to ensure reporting reliability. Use feature flags and safe deployment practices to roll out reporting features incrementally without disrupting users

Requirements:

• Candidates must be authorized to work in the United States for the duration of employment without requiring current or future employer sponsorship of any kind, including but not limited to OPT, STEM OPT, H-1B, or any other visa classification
• at least 7+ years of experience
• 7+ years of professional experience as a full stack software engineer
• Proven track record of owning features end-to-end, from design through production, rather than working a narrow slice of the stack alone
• Strong ability to learn and adopt new platforms and tools
• Ability to explain complex technical solutions to both technical and non-technical audiences
• Strong organizational and time management skills
• Excellent written and verbal communication skills
• Self-starter who takes initiative and performs well with limited direction
• Success-driven, collaborative team player who thrives in a dynamic, fast-changing environment
• Coachable, resilient, and comfortable receiving direct feedback
• Strong knowledge of C#, VB, and modern .NET, including ASP.NET Core; experience designing, developing, and consuming APIs (GraphQL a plus); strong understanding of OOP, SOLID principles, design patterns, and clean code practices; experience with Entity Framework Core (EF Core) and data access patterns; understanding of modern authentication and authorization mechanisms including OAuth 2.0, OpenID Connect (OIDC), JWT, and role/claims-based authorization; familiarity with dependency injection, middleware, configuration, logging, exception handling, and asynchronous programming in .NET; experience writing unit and integration tests
• Strong hands-on experience with modern React and TypeScript; strong understanding of JavaScript/TypeScript, HTML5, jQuery, and CSS; experience with React Hooks, functional components, component composition, and state management; experience building responsive, accessible, reusable, and maintainable UI components; experience integrating React applications with GraphQL APIs; understanding of routing, form handling, API integration, authentication, error handling, caching, and client-side state management; familiarity with modern frontend tooling such as npm and testing frameworks
• Strong knowledge of SQL Server and/or AWS RDS MySQL 8.x; experience writing, troubleshooting, and optimizing SQL queries, joins, stored procedures, and transactions; strong understanding of relational database design, normalization, relationships, constraints, and indexes; experience with query performance analysis and database optimization; understanding of database migrations, concurrency, transactions, and data integrity
• Proficiency with Git and modern source-control workflows, including pull requests and code reviews; experience with CI/CD pipelines and automated build, test, and deployment processes; familiarity with Docker and containerized applications; experience with cloud platforms (AWS preferred); understanding of application logging, monitoring, debugging, and production troubleshooting; familiarity with secure coding practices and OWASP security principles
• Good understanding of Agile/Scrum software development processes; strong analytical, debugging, and problem-solving skills; ability to participate effectively in technical design discussions, code reviews, and architecture decisions; commitment to continuous learning and staying current with modern software development practices; proven experience using AI tooling daily for AI-native development