Senior Software Engineer – Backend

CaseGuard•Arlington, VA

6h•Hybrid

About The Position

We are looking for a Senior Software Engineer to join our backend team and play a critical role in building the platform that will define CaseGuard’s next chapter. You will design and build the REST API microservices and cloud infrastructure that power our application, real-time collaboration features, and large-scale processing workers. This role is expected to operate with a high degree of ownership. You will take responsibility for backend domains or major features and drive them end-to-end from design through production with minimal oversight. Beyond writing excellent code, you will contribute to engineering standards, influence system design, and help scale both the system and the team.

Requirements

6+ years of experience owning and delivering complex backend systems or features end-to-end
Strong proficiency in C# and ASP.NET Core for REST API and microservices development
Solid experience with relational and/or NoSQL databases and performance optimization
Hands-on experience with AWS services (e.g., EC2, S3, Lambda, RDS, DynamoDB)
Experience building scalable, production-grade systems with clear reliability and performance considerations
Strong understanding of asynchronous processing, concurrency, and distributed system fundamentals
Security-aware mindset with experience handling sensitive or compliance-regulated data
Strong communication skills and ability to collaborate effectively across a hybrid team

Nice To Haves

Experience building large-scale file or document processing pipelines
Experience with event-driven architectures and message queues (e.g., SQS, SNS, EventBridge)
Familiarity with ML model integration or AI-powered backend systems
Experience with real-time systems (e.g., WebSockets, SignalR)
Practical knowledge of IaC tools such as AWS CDK, Terraform, or CloudFormation
Experience with containerization (Docker) and orchestration platforms (Kubernetes)
Relevant AWS certifications

Responsibilities

Design and build scalable, secure REST APIs and microservices using ASP.NET Core (C#)
Build and maintain backend workers for large-scale file processing - ingesting, analyzing, redacting, and exporting documents using ML models
Take ownership of backend domains or major features and drive them end-to-end from design through production
Own database design, schema decisions, and query optimization for production systems
Design and deploy AWS cloud infrastructure using Infrastructure as Code (IaC) tools such as AWS CDK
Support real-time collaboration features for concurrent multi-user workflows
Identify and resolve performance bottlenecks to ensure reliability and scalability under load
Champion security and compliance best practices across backend systems and APIs
Work closely with frontend engineers to design and deliver end-to-end features - defining API contracts, aligning on data flows, and ensuring correct system behavior across client and backend
Break down complex, ambiguous problems into well-defined tasks and execution plans
Take ownership of ambiguous problem spaces and turn them into clear, executable designs and deliverables
Operate with minimal guidance on implementation details while aligning with the overall architecture
Drive execution across engineers when required - breaking down work, aligning implementation, and ensuring delivery outcomes
Make independent technical decisions within your domain, escalating only when cross-system tradeoffs are involved
Drive backend decisions in cross-functional work, ensuring system design is robust, scalable, and not constrained by client-side limitations
Be accountable for the reliability, performance, and scalability of the systems you build in production
Conduct thorough code reviews and uphold engineering standards
Participate in architectural discussions and contribute to system design decisions
Mentor junior engineers and support their technical growth
Contribute to hiring by reviewing technical assessments and interviewing candidates

Benefits

Meaningful equity - we believe in sharing ownership with the people who build the company
Competitive base salary alongside an equity-heavy compensation package
Hybrid working - flexibility to work remotely with regular in-person collaboration
Direct influence over architecture, engineering culture, and the technical roadmap
Opportunity to take ownership of critical backend domains in a growing cloud platform
A small, high-trust team that moves fast, values craftsmanship, and ships quality software
Medical, Dental, and Vision Insurance
401K
Paid Vacation
Ten paid holidays per year
Friendly and Learning environment