About the role
Compensation: $110,000 - $165,000
About mpathic
mpathic is building the future of trustworthy AI. Grounded in behavioral science and human-centered design, we provide the infrastructure for building AI systems that are safe, aligned, and emotionally intelligent.
Building on our work in areas like RL gyms, red teaming, benchmarking, and human data, we are creating the foundation for training, probing, and measuring advanced AI systems reliably, auditably, and at scale.
Position Overview
mpathic is seeking a Senior Software Engineer (Back End) to help design, build, and scale the systems that power our platform and AI safety work.
This role will focus primarily on backend engineering using
.NET (C#)
and AWS, with responsibility for building reliable APIs, services, data infrastructure, and cloud-native applications. You’ll work closely with engineers and cross-functional partners to solve complex technical problems, improve the scalability and performance of our systems, and support the integration of AI models into our products and workflows.
We’re looking for an experienced engineer who is comfortable owning problems end-to-end, making thoughtful architectural decisions, and operating in a fast-moving environment where the problems we’re solving are still evolving.
About You
Proven Experience
5+ years of software engineering experience, with a strong focus on backend development using .NET (C#).
AWS Proficiency
Hands-on experience with AWS services, architecture, and best practices for building and operating cloud-native applications.
Database Expertise
Strong experience with SQL and NoSQL databases, including schema design, data modeling, query optimization, and performance.
System Design
Experience designing scalable, reliable backend services, APIs, and distributed systems.
Frontend Familiarity
Working knowledge of React and its ecosystem, with the ability to collaborate effectively across the stack.
Technical Ownership
Comfortable taking ambiguous technical problems from initial requirements through design, implementation, testing, and deployment.
Collaborative Mindset
Strong communicator who enjoys working across engineering, product, and other technical teams.
Continuous Learning
Curious about emerging technologies and motivated to evaluate new tools and approaches pragmatically.
Core Responsibilities
Backend Development
Design, build, test, and maintain robust backend systems using .NET (C#) and other languages as appropriate.
Cloud Infrastructure
Design, deploy, and manage scalable applications in AWS, leveraging services such as ECS Fargate, DynamoDB, S3, and other cloud-native technologies.
API & Service Development
Build reliable APIs and services that support mpathic’s platform, products, and AI workflows.
Database Management
Work with both SQL databases, including PostgreSQL, and NoSQL databases, including DynamoDB, to support diverse application and data needs.
System Design & Scalability
Make thoughtful architectural decisions around reliability, scalability, performance, security, and maintainability.
AI Integration
Support the integration of AI models and AI-powered capabilities into production systems and workflows.
Frontend Collaboration
Partner closely with frontend engineers and occasionally contribute to React-based applications when needed.
Code Quality
Write clean, maintainable, well-tested, and well-documented code while contributing to engineering standards and best practices.
Mentorship
Provide technical guidance to other engineers and actively participate in code reviews, architecture discussions, and knowledge sharing.
Problem-Solving
Tackle complex engineering challenges spanning performance optimization, system design, troubleshooting, integrations, and evolving product requirements.
Research & Experimentation
Stay current on emerging tools and techniques for cloud infrastructure, services, APIs, and AI applications. Conduct focused proofs of concept with clear technical and business outcomes.
Cross-Functional Collaboration
Work closely with engineering, product, AI, and other teams to translate business and customer needs into scalable technical solutions.
What Success Looks Like
You’ll help mpathic build a backend foundation that can scale alongside our products and customers. You’ll take meaningful ownership of technical decisions, improve the reliability and maintainability of our systems, and help the broader engineering team move quickly without sacrificing quality.
You’ll also have the opportunity to work on technically challenging problems at the intersection of software infrastructure, AI, and human-centered AI safety.