Senior C# .NET Engineer / Boston

Kelly Services; Boston (MA); On-site; USD 120,000 - 140,000; Full time

Benefits offered by this job

Competitive base salary

Medical, dental, and vision coverage

401(k) with company match

Generous PTO and holidays

Job summary

Motion Recruitment Partners (MRP) is seeking a Senior Software Engineer in Boston to join a global software provider modernizing postal operations and logistics. You will design and build robust C#/.NET systems, contribute across the full development lifecycle, and own features in a high-availability environment.

The role emphasizes building scalable APIs, distributed services, and enterprise-grade architecture to support high transaction volumes for essential public services.

Qualifications

• 5+ years of professional software engineering experience.
• Recent professional experience in C#/.Net.
• Experience designing and building scalable enterprise applications.
• Strong understanding of object-oriented design, software architecture, and design patterns.
• Experience developing APIs, backend services, and distributed systems.
• Ability to work across the full software development lifecycle, from design through deployment.

Skills

C# / .NET

APIs & backend

Distributed systems

OO design / architecture

Full SDLC

Job description

$120000 - $140000

Just to put it up-front: this role requires someone who can easily commute to downtown Boston 2 times per week. Thanks for applying!

A global software provider that supports postal operators and logistics organizations around the world is looking to add a Senior Software Engineer to a highly visible product team. The organization delivers technology that modernizes retail counters, delivery operations, package tracking, and sorting services through a unified platform used in mission-critical environments. One of its largest initiatives is a major modernization effort supporting a national postal network, focused on building a Product Journey Engine that powers complex customer transactions through configurable, auditable workflows.

This is an opportunity to work on large-scale systems where reliability, performance, and maintainability are critical. The team is seeking engineers with strong experience in C#/.NET who enjoy designing robust software, solving challenging technical problems, and owning features throughout the development lifecycle. You'll play a key role in building the core architecture behind next-generation postal systems while contributing to products that process high volumes of transactions and support essential public services.

Required Skills & Experience

• 5+ years of professional software engineering experience
• Recent professional experience on your resume in C#/.Net
• Experience designing and building scalable enterprise applications
• Strong understanding of object-oriented design, software architecture, and design patterns
• Experience developing APIs, backend services, and distributed systems
• Ability to work across the full software development lifecycle, from design through deployment

The Offer

• Competitive base salary
• Comprehensive medical, dental, and vision coverage
• 401(k) with company contribution/match
• Generous PTO and company holidays

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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.