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Senior Software Engineer / Cloud Middleware / Device Integration

Kelly Services

Philadelphia, PAFull-time$140–160K/yrSeen todaySeen in employer's feed today

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At a glance

Compensation
$140–160K/yr
Location
Philadelphia, PA
Schedule
Full-time
Work Authorization
Not specified

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Job overview

A market-leading technology firm is hiring a Senior Software Engineer to develop high-performance middleware for secure, large-scale transaction processing. The role focuses on backend development, cloud middleware, and hardware device integrations, supporting a scalable platform across multiple industries. The engineer will work on systems integration and transactional services that support critical business operations.

Skills & qualifications

RequiredNice to have

Skills

Software Development.NET FrameworkVisual StudioC#ASP.NETObject-Oriented DesignREST ServicesDistributed ApplicationsMultithreadingHigh-Throughput SystemsHardware IntegrationInterface DevelopmentSoftware ArchitectureCoding StandardsSource ControlSoftware TestingTCP/IPHTTPHTTPSSSLSSHWiFiSocket ProgrammingAgile/ScrumData SecurityEncryptionCompliancePrivacyCommunicationTroubleshootingProblem-SolvingPriority ManagementSQL ServerSQLiteRelational DatabasesGitWiresharkJavaKotlinLinux

Qualifications

7+ Years Software Development Experience

Benefits

Medical Insurance
Dental Insurance
Vision Insurance
401(k) Match
Parental Leave

Full job description

$140000 - $160000

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.

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.

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