Principal Open Source Developer - TypeScript/Node/Angular/React/.NET

$190 - $210

Job Description

We are seeking a Principal Open Source Software Engineer to provide strategic technical leadership across a growing portfolio of open source products and platforms. This role combines hands-on software engineering expertise with high-level architectural ownership, driving engineering excellence, technology direction, and long-term platform strategy across multiple initiatives.

The ideal candidate will have deep expertise across .NET, C#, Angular, React, and TypeScript, along with a proven track record of leading large-scale engineering efforts and influencing technical decisions across organizations. You will collaborate with internal stakeholders and the broader open source community to deliver scalable, secure, and highly available software solutions while shaping the future direction of our technology ecosystem.

Required Skills & Experience

• 10+ years of software engineering experience with .NET and C#
• Strong experience with Angular and/or React
• Advanced TypeScript and JavaScript expertise
• Extensive REST API development experience
• Strong database design and SQL development skills
• Experience working with Entity Framework
• Proven experience driving technical strategy and leading complex engineering initiatives within Agile environments

Desired Skills & Experience

• Experience with .NET Core and .NET 8
• Azure, AWS, or Kubernetes experience
• Strong microservices architecture experience
• Experience building CI/CD pipelines and DevOps processes
• Docker and containerization expertise
• Open source maintainer or contributor experience
• Experience mentoring senior engineers and providing technical leadership across multiple teams

What You Will Be Doing

Daily Responsibilities

• Drive hands-on development efforts across open source products and platforms
• Design and implement scalable solutions using .NET and C#
• Provide technical direction for front-end development using Angular or React
• Define and oversee API strategy, development, and integration initiatives
• Lead architecture reviews and guide critical technical decision-making
• Establish, evolve, and champion engineering best practices across teams
• Support cloud-native application development and modernization initiatives
• Evaluate community contributions and technical proposals
• Mentor senior engineers and provide cross-team technical leadership
• Partner with product and engineering leadership to shape technology roadmaps and long-term platform strategy

The Offer

• Bonus OR Commission eligible

You will receive the following benefits

• Medical Insurance
• Dental Benefits
• Vision Benefits
• Paid Time Off (PTO)
• 401(k) {including match – if applicable}

Applicants must be currently authorized to work in the US on a full-time basis now and in the future.

Motion Recruitment Partners (MRP) is an Equal Opportunity Employer. All applicants must be currently authorized to work on a full-time basis in the country for which they are applying, and no sponsorship is currently available. Employment is subject to the successful completion of a pre-employment screening. Accommodation will be provided in all parts of the hiring process as required under MRP’s Employment Accommodation policy. Applicants need to make their needs known in advance.