Senior Open Source Developer - TypeScript/Node/Angular/React/.NET
Boston, MAFull-time$140–180K/yrSeen todaySeen in employer's feed today
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At a glance
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Job overview
The Senior Open Source Software Engineer will build and maintain widely adopted open source software, including scalable platforms, developer tools, and cloud-native applications. The role involves designing features, APIs, and platform capabilities while collaborating with product, engineering, and open source contributors. The ideal candidate brings experience with .NET, C#, Angular, React, and TypeScript and a passion for open source development.
Skills & qualifications
Skills
Qualifications
Benefits
Full job description
$140000 - $180000
Job Description
We are seeking a Senior Open Source Software Engineer to join a growing engineering organization focused on building and maintaining widely adopted open source software. This role will contribute to the development of highly scalable platforms, developer tools, and cloud-native applications used by customers and community members around the world.
The ideal candidate will bring strong experience with .NET, C#, Angular, React, and TypeScript, along with a passion for open source development and community-driven innovation. You will help design and deliver new features, APIs, and modern platform capabilities while working closely with product, engineering, and open source contributors to improve the overall developer experience.
Required Skills & Experience
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5+ years of .NET and C# development experience
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Professional experience with Angular and/or React
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Strong TypeScript and JavaScript development skills
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Experience building and integrating REST APIs
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Strong SQL and database development experience
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Experience working with Entity Framework
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Experience delivering software within Agile environments
Desired Skills & Experience
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Experience with .NET Core and .NET 8
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Azure, AWS, or cloud-native application experience
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Microservices architecture experience
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CI/CD pipeline implementation experience
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Docker and containerization knowledge
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Automated testing and quality engineering practices
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Previous open source project contributions
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Experience mentoring junior engineers
What You Will Be Doing
Daily Responsibilities
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Design, develop, and maintain applications using .NET and C#
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Build modern user interfaces using Angular or React
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Develop and maintain REST APIs and integrations
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Contribute to open source repositories and roadmap initiatives
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Review pull requests and participate in code reviews
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Troubleshoot and resolve complex technical issues
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Write clean, scalable, and maintainable code
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Support deployments, releases, and platform enhancements
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Participate in architecture and technical design discussions
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Mentor junior team members and promote engineering best practices
The Offer
- Bonus OR Commission eligible
You will receive the following benefits
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Medical Insurance
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Dental Benefits
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Vision Benefits
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Paid Time Off (PTO)
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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.
How this job compares
Set against the 42,008 open Software Engineer jobs on Olive Jobs, counted November 6, 2026.
- Pay
- This posting$140–180K/yr
- Massachusetts median$140–210K/yr991 salary ranges
- US median$135–218K/yr33,367 salary ranges
This range's midpoint, $160K, is 7% below the Massachusetts median midpoint ($172K) — in the middle half of Software Engineer salary ranges in Massachusetts.
- Openings
- Olive Jobs lists 1,162 open Software Engineer jobs in Massachusetts and 42,008 across the US. 8% of them nationwide are listed as remote or flexible.
- Experience
- This posting asks for at least 5 years of experience; Software Engineer postings that state a minimum ask for 5 years at the median (34,212 postings).
- Education
- 13,955 of the 42,008 open Software Engineer jobs (33%) ask for a bachelor's degree or higher.
Counted across the open, public US postings on Olive Jobs on November 6, 2026. Pay medians are the middle values of the low ends and of the high ends of postings that list both ends of a range in the same cadence (a yearly salary or an hourly rate); a range's midpoint is halfway between its ends. Pay and experience figures resting on fewer than 20 postings are left out.
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