Senior Software Engineer / Cloud Middleware / Device Integration

By myKelly | October 12, 2026

Senior Software Engineer / Cloud Middleware / Device Integration

Apply On Motion Recruitment Applied

Job ID: mrp-892284

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Philadelphia, ,

Information Technology

Full Time,

$140000 - $160000

On-site

Other/Non Classified

Philadelphia, ,

$140000 - $160000

Full Time,

Other/Non Classified

On-site

Information Technology

Apply On Motion Recruitment Applied

Job details

A market-leading technology firm is hiring a Senior Software Engineer. This full-time opportunity offers the chance to work with C#, .NET, REST services, SQL, cloud technologies, and hardware device integrations while developing high-performance middleware solutions that support secure, large-scale transaction processing environments across multiple industries.

This role is ideal for a backend engineer who enjoys solving complex integration challenges and working close to the systems that power critical business operations. You’ll work directly with hardware devices, cloud middleware, and secure transactional services while helping expand a highly scalable platform. The team is looking for someone who enjoys technical problem-solving, systems integration, and building solutions that operate behind the scenes but play a critical role in the overall customer experience.

Required Skills & Experience

  • 7+ years of software development experience
  • Strong experience with .NET Framework 4.6.2+ and Visual Studio 2019+
  • Strong C# and ASP.NET development experience
  • Strong object-oriented design and programming skills
  • Experience building REST services and distributed applications
  • Experience developing multi-threaded, high-throughput transactional systems
  • Direct experience integrating with hardware devices
  • Experience building and documenting interfaces for third-party consumption
  • Strong understanding of software architecture, coding standards, source control, and testing best practices
  • Working knowledge of networking technologies including TCP/IP, HTTP, HTTPS, SSL, SSH, WiFi, and socket programming
  • Experience with Agile/Scrum methodologies
  • Knowledge of data security, encryption, compliance, and privacy requirements
  • Strong communication, troubleshooting, and problem-solving skills
  • Ability to manage multiple priorities in a fast-paced environment

Desired Skills & Experience

  • Experience with SQL Server, SQLite, and relational database technologies
  • Familiarity with Git, Wireshark, and other development and troubleshooting tools
  • Experience with Java, Kotlin, or additional object-oriented programming languages
  • Working knowledge of Linux, virtualization technologies, and containerization platforms
  • Experience with cloud environments including Azure, AWS, or GCP
  • Experience supporting high-volume transactional systems
  • Experience within payment processing, financial services, or commerce-related industries

What You Will Be Doing
Tech Breakdown

  • 40% Middleware & Integration Development
  • 25% Device & Hardware Integrations
  • 20% Backend Development (.NET/C#)
  • 15% Cloud Technologies & Transaction Processing

Daily Responsibilities

  • 80% Hands-On Engineering
  • 10% Team Collaboration
  • 10% Planning, Testing & Technical Standards

The Offer

  • Bonus Eligible

You will receive the following benefits:

  • Medical, Dental, and Vision Coverage
  • Life Insurance
  • Retirement Plan with Company Match
  • Commission Sharing Plan
  • Parental Leave Programs

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

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As part of our promise to talent, Kelly supports those who work with us through a variety of benefits, perks, and work-related resources. Please note: The following benefits reflect Kelly's general offerings. Eligibility may vary by assignment, location, and job type. Kelly offers eligible employees voluntary benefit plans including medical, dental, vision, telemedicine, term life, whole life, accident insurance, critical illness, a legal plan, and short-term disability. As a Kelly employee, you will have access to a retirement savings plan, service bonus and holiday pay plans (earn up to eight paid holidays per benefit year), and a transit spending account. In addition, employees are entitled to earn paid sick leave under the applicable state or local plan. Click here for more information on benefits and perks that may be available to you as a member of the Kelly Talent Community.



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