Job Title: Senior .NET Software Engineer

Company Name: KinderSystems

Job Url: https://kindersystems.rippling-ats.com/job/1010265/senior-net-software-engineer?s=zr

Job Description: Senior .NET Software Engineer
REMOTE
$110,000 ‒ $130,000 Hourly
What we do 

KinderSystems (www.KinderSystems.com) is the leading provider of subsidy management software-as-a-service (SaaS) solutions to state agencies, Head Start programs, and child care providers. Built and supported by industry experts, KinderSystems envisions a world where all families, no matter their income level, have access to high quality child care. Hundreds of agencies in the publicly funded child care sector use KinderSystems applications via the cloud or mobile devices to streamline their operations, ensure compliance with government regulations, and meet the needs of the families they serve.  

What you'll do:

We’re looking for a talented Senior .NET Software Engineer to join our team and make an impact from day one. This is a full-stack role where you’ll work across everything—from backend services and data design to cloud infrastructure and modern web front-ends. You’ll be a hands-on builder who enjoys creating scalable, secure, and maintainable systems, all within the Microsoft ecosystem.

Core Responsibilities:


Design, develop, and maintain full-stack applications using C#, .NET Framework, and .NET 8+ 
Build and optimize RESTful APIs following industry best practices for versioning, error handling, pagination, and documentation 
Architect and implement Azure Serverless solutions (Azure Functions, Logic Apps) and event-driven messaging via Azure Service Bus 
Design and manage Azure Cosmos DB data stores, including partition strategy, indexing, and performance tuning 
Develop and maintain complex MSSQL stored procedures, with a strong command of query optimization and execution plans 
Lead data modeling efforts across relational and NoSQL databases, ensuring integrity, scalability, and alignment with business requirements 
Implement authentication and authorization flows using OAuth 2.0 / OpenID Connect 
Apply OWASP Top 10 security best practices across all layers of the application stack 
Develop responsive, accessible web front-ends using HTML5, CSS3, JavaScript, and AJAX, including dynamic UI interactions, client-side validation, and asynchronous data fetching 
Collaborate with UX/design teams to translate wireframes and mockups into polished, cross-browser-compatible web interfaces 
Leverage Claude Code (Anthropic) at a mid-to-expert level for AI-assisted development workflows including code generation, refactoring, debugging, and documentation 
You have:

7–8 years of professional software engineering experience 
Expert-level proficiency in C#, .NET Framework, and .NET 8+ 
Strong experience with Azure cloud services, specifically Serverless compute and Service Bus 
Proven experience with Azure Cosmos DB (data modeling, SDK usage, consistency levels) 
Deep understanding of MSSQL Server — stored procedures, indexing strategies, performance tuning, and relational data modeling 
Solid command of RESTful API design principles and patterns 
Hands-on experience implementing OAuth 2.0 authentication/authorization 
Working knowledge of OWASP security best practices and secure coding standards 
Proficiency in front-end technologies: HTML, CSS, JavaScript, AJAX 
Mid-to-expert level usage of Claude Code for AI-augmented software development 
Nice to Have: 

Experience with ASP.NET Web Forms — maintenance, migration planning, or modernization of legacy applications 
Experience with Blazor (Server or WebAssembly) for building interactive web UIs with C# 
Familiarity with Entity Framework 10 (EF 10) for modern data access and ORM patterns 
What You'll Bring 

A security-first mindset with the ability to identify and mitigate vulnerabilities early in the development lifecycle 
Strong data architecture instincts — you think carefully about schema design, access patterns, and long-term scalability 
Comfort working across the full stack, from database layer to user interface 
A modern engineering workflow that embraces AI-assisted tooling as a productivity multiplier 
Clear communication skills and the ability to mentor junior team members on best practices 
What We Offer 

This is a fully remote position open to candidates anywhere in the United States, with travel required once per year. You’ll be expected to work a full-time schedule of 8am–5pm in your local time zone and be fully dedicated to your role during these hours, without other concurrent employment or conflicting commitments.
The compensation range for this role is $110k-$130k.
Comprehensive benefits package including health, vision, and dental insurance, starting the first of the month after start date 
401(k) retirement plan, with company match 
Paid company holidays and generous PTO 
Friendly, supportive, and adventurous environment with a team of engaged colleagues who are all focused on enabling and improving the child care industry for all families. 


KinderSystems actively embraces diversity and equal opportunity in a meaningful way. We are committed to building a team that represents a variety of backgrounds, perspectives, and skills. The more inclusive we are, the better our work will be which is why we do not discriminate based on race, color, religion, marital status, age, national origin, ancestry, physical or mental disability, medical condition, pregnancy, genetic information, gender, sexual orientation, gender identity or expression, veteran status, or any other status protected under federal, state, or local law. 

 



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