Senior .NET Developer - Massachusetts

Motion Recruitment; Cambridge (MA); Remote; USD 120,000 - 180,000; Full time

Benefits offered by this job

Flexible remote work environment

Medical, Dental, and Vision Insurance

401(k)

Job summary

Motion Recruitment is seeking a Senior .NET Engineer to join a fast-growing software company transforming how organizations manage large-scale scientific and operational data. This full-time role focuses on building cloud-native applications and distributed systems using C#, .NET, React, TypeScript, and AWS.

Remote within the United States. You will design modern microservices, improve platform reliability, drive architecture decisions, and contribute to products with real customer impact.

Qualifications

• 6+ years of software engineering experience.

Responsibilities

• Design and build cloud-native backend services in C#/.NET.
• Develop and maintain microservices on AWS.
• Build frontend components in React/TypeScript.
• Implement tests and improve CI/CD pipelines.
• Troubleshoot production issues and optimize performance.

Skills

C# / .NET

Distributed systems

React

TypeScript

AWS

REST APIs

SQL & NoSQL

Automated testing

CI/CD (GitHub Actions)

Troubleshooting & performance

Tools

GitHub Actions

Docker

Job description

Senior .NET Engineer

Join a fast-growing software company that is transforming how organizations manage and leverage large-scale scientific and operational data. This is a full-time opportunity for a Senior .NET Engineer to build cloud-native applications and distributed systems using C#, .NET, React, TypeScript, and AWS. You'll work on highly scalable products that process complex datasets, integrate with external platforms, and support mission-critical business workflows. Based remotely within the United States.

This is an opportunity for an engineer who enjoys solving difficult technical challenges rather than simply maintaining applications. You'll help design modern microservices, improve platform reliability, drive architecture decisions, and contribute to products that have a direct impact on customers. The team is looking for someone who can operate across the stack, troubleshoot production systems, and help scale a rapidly evolving cloud platform.

Required Skills & Experience

• 6+ years of software engineering experience
• Strong experience with C# and .NET
• Experience building distributed systems and microservices
• React and TypeScript development experience
• AWS cloud platform experience
• Strong understanding of REST APIs and backend services
• Experience with SQL and NoSQL databases
• Automated testing experience
• CI/CD experience using GitHub Actions or similar tools
• Production troubleshooting and performance optimization experience

Desired Skills & Experience

• Docker and containerization
• Infrastructure as Code experience
• Event-driven architecture and message queues
• Observability and monitoring tools
• Large-scale SaaS platform experience
• Experience working with scientific, healthcare, or regulated systems

What You Will Be Doing Tech Breakdown

• 40% Backend Development (.NET/C#)
• 25% Cloud & Microservices (AWS)
• 20% Frontend Development (React/TypeScript)
• 15% Testing, Performance & DevOps

Daily Responsibilities

• 80% Hands-On Development
• 10% Architecture & Technical Planning
• 10% Cross-Functional Collaboration

The Offer

• Competitive base salary
• Bonus eligible
• Equity participation
• Flexible remote work environment

You will receive the following benefits:

• Medical, Dental, and Vision Insurance
• Flexible PTO
• 401(k)
• Life and Disability Insurance
• Professional development opportunities
• Career growth within a highly technical engineering organization

Applicants must be currently authorized to work in the United States on a full-time basis now and in the future. No sponsorship is available for this position.