Senior .NET Developer/Hybrid/Philadelphia/$140k

By myKelly | October 14, 2026

Senior .NET Developer/Hybrid/Philadelphia/$140k

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Job ID: mrp-891727

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Philadelphia, PA, US

Information Technology

Full Time,

$130000 - $140000

On-site

Other/Non Classified

Philadelphia, PA, US

$130000 - $140000

Full Time,

Other/Non Classified

On-site

Information Technology

Apply On Motion Recruitment Applied

Job details

Join a rapidly growing global commerce technology organization that powers some of the world’s largest enterprises. This full-time opportunity is ideal for a seasoned software engineer with deep expertise in .NET, SQL Server, and modern front-end frameworks such as React and Angular. Operating within a highly secure, enterprise-scale environment, you’ll help build innovative payment, security, identity, and data analytics solutions that support omnichannel commerce experiences across web, mobile, and in-store platforms.

This employer offers the opportunity to work on mission-critical applications used by leading global brands while collaborating with talented Agile teams in a fast-paced, high-growth environment. The role provides significant exposure to modern web architectures, API ecosystems, cloud-connected commerce technologies, and large-scale enterprise software development. For professionals seeking technical challenges, career growth, and the ability to influence the future of a rapidly expanding platform, this is an exceptional opportunity. Required Skills & Experience

  • 7+ years of software application development experience using .NET and SQL Server
  • Strong experience building web applications using MVC, JavaScript, jQuery, HTML, and CSS
  • Deep expertise in modern SPA architectures and frameworks including React, Angular, Redux, TypeScript, and state management patterns
  • Experience developing and securing API layers using modern authentication and authorization practices (JWT tokens, API security, secure coding standards)
  • Strong understanding of Micro Frontends/Micro UI architectures
  • Experience with server-side rendering implementations
  • Advanced knowledge of web performance optimization, localization, and accessibility best practices
  • Experience decomposing monolithic applications into reusable, scalable components
  • Strong SQL Server database development and optimization skills
  • Hands-on experience working within Agile/Scrum development environments
  • Familiarity with Git version control and collaborative development workflows
  • Experience with accurate effort estimation, sprint planning, and task management
  • Strong problem-solving and analytical skills with a focus on delivering maintainable solutions
  • Excellent written and verbal English communication skills
  • Proficiency with Microsoft Office applications
  • Understanding of secure coding, application security, and software quality practices
  • Ability to successfully pass criminal background and credit checks

Desired Skills & Experience

  • Experience developing enterprise-scale commerce, payment processing, fintech, or transaction-based platforms
  • Exposure to payment industry standards and PCI-compliant environments
  • Experience designing reusable libraries and shared application frameworks
  • Knowledge of WebSockets and real-time application development
  • Experience collaborating across multiple product teams and stakeholders
  • Familiarity with CI/CD pipelines and automated testing practices
  • Experience mentoring developers and promoting software engineering best practices
  • Strong technical documentation and architectural design experience
  • Passion for learning emerging technologies and evolving platform architectures

What You Will Be Doing
Tech Breakdown

  • 40% Front-End Development (React, Angular, TypeScript, SPA Architecture)
  • 30% Back-End Development (.NET, APIs, SQL Server)
  • 15% System Design & Architecture
  • 10% Agile Collaboration & Sprint Planning
  • 5% Documentation, Process Improvement & Stakeholder Communication

Daily Responsibilities

  • Participate in Agile Scrum ceremonies including sprint planning, estimation, story creation, and delivery
  • Analyze business requirements and translate specifications into scalable system designs
  • Apply systems thinking to develop solutions across multiple products and technology environments
  • Influence application architecture, maintainability, and long-term platform stability
  • Develop reusable libraries, frameworks, and software components
  • Deliver high-quality, consistent, and secure software solutions
  • Contribute to software standards, engineering best practices, and process improvements
  • Define project deliverables, tasks, and release objectives
  • Collaborate with QA teams to ensure comprehensive testing, coverage, and execution
  • Partner with internal stakeholders to understand priorities and business goals
  • Update and maintain technical documentation
  • Continuously develop expertise in payment technologies, commerce platforms, and industry trends
  • Adapt to evolving hardware, software, and payment processing ecosystems

The Offer

  • Competitive base salary plus potential performance-based incentives
  • Medical, prescription, dental, and vision coverage
  • Life insurance benefits
  • Retirement savings plan with company match
  • Additional paid leave and wellness benefits

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