Senior Software Engineer

Systems & Methods, Inc. (SMI)

. Develop, test, and maintain full-stack web applications using .NET, C#, MS SQL, and NoSQL databases .

Posted 10/16/2026full-timeRemote • United StatesSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates extensive experience in full-stack web application development using .NET and C#, with a strong focus on MS SQL Server and NoSQL databases. Proficient in building responsive front-end interfaces and developing RESTful APIs while adhering to best coding practices and Agile methodologies.

Highest-signal resume keywords

Full-Stack Web Application DevelopmentMS SQL Server ExpertiseRESTful API DevelopmentExperience with React.js, Angular, or Vue.jsCI/CD Pipeline Experience

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

.NET DevelopmentC# ProgrammingMS SQL ServerNoSQL DatabasesASP.NET CoreEntity FrameworkHTML5CSS3JavaScriptUnit Testing Frameworks

Soft Skills

Team PlayerOwnership of TasksCollaborationProblem-SolvingMentoring

Tools & Technologies

AzureAWSDockerKubernetesJenkinsVersion Control SystemsAutomated Testing FrameworksMicroservices ArchitectureAgile MethodologiesScrum/Kanban

Industry Keywords

Financial SectorFinancial/Payment Systems

Tech Stack

Tools & technologies

AngularASP.NETAWSAzureCassandraCloudDockerEntity FrameworkJavaScriptJenkinsKubernetesMicroservicesMongoDBMS SQL ServerNoSQLReactRedisSQLVue.js.NET

About the role

Key responsibilities & impact

Develop, test, and maintain full-stack web applications using .NET, C#, MS SQL, and NoSQL databases
Design and implement server-side logic and components
Develop RESTful APIs and integrate them with front-end applications
Build responsive and user-friendly front-end interfaces using modern front-end technologies
Collaborate with business stakeholders to understand requirements and deliver optimal solutions
Write clean, maintainable, and efficient code following best practices and coding standards
Optimize applications for maximum speed and scalability
Perform code reviews and mentor junior developers
Troubleshoot, debug, and resolve issues in production and development environments
Collaborate with DevOps to ensure smooth deployment and continuous integration
Stay current with industry trends and emerging technologies
Work collaboratively to ensure project success and meet deadlines

Requirements

What you’ll need

Strong experience in .NET development using C#
Expertise in MS SQL Server database design, queries, and performance tuning
Solid understanding of NoSQL databases such as MongoDB, Cassandra, or Redis
Experience with ASP.NET Core, Entity Framework, and Web API
Proficiency in HTML5, CSS3, and JavaScript
Experience with React.js, Angular, or Vue.js
Familiarity with version control systems
Knowledge of Azure, AWS, or other cloud platforms
Experience with CI/CD pipelines and automated testing frameworks
8–10 years of experience in .NET development (MUST HAVE)
Experience in the financial sector and understanding of financial/payment systems preferred
Familiarity with DevOps practices and tools such as Docker, Kubernetes, Jenkins, and IaC preferred
Knowledge of microservices architecture preferred
Experience with unit testing frameworks such as NUnit or MSTest preferred
Strong understanding of design patterns and software architecture principles preferred
Good understanding of Agile methodologies, including Scrum/Kanban, preferred
Must be willing to work as a team player, take ownership of tasks, and meet deadlines

Benefits

Comp & perks

Medical insurance
Dental insurance
401(K) plan
HSA/Flexible Spending Account
Paid holidays
Paid time off
Profit-sharing
Work-life balance
Career growth and achievement opportunities