The Role Modernize an existing C++ desktop application by migrating functionality to a web-based .NET solution. Design, develop, test, deploy, maintain, and support software using C++, C#, ASP.NET Core, APIs, and modern web technologies. Collaborate with product, QA, and business stakeholders, perform code reviews and debugging, resolve performance issues, and evaluate AI capabilities for application and workflow integration while ensuring security, testing, monitoring, and validation. Summary Generated by Built In It's fun to work in a company where people truly BELIEVE in what they're doing! Fullsteam is a leading provider of vertical software and embedded payments technology dedicated to helping businesses flourish by providing their customers with seamless experiences. With a dynamic and growing team of over 1,900 employees, we are committed to driving innovation and delivering best-in-class software and payment solutions that empower small and medium-sized businesses across numerous industries. Our purpose is to help our customers grow their businesses and delight their customers. Join us and be a part of a forward-thinking company that values growth, excellence, and the success of our clients. Print Reach, part of the Fullsteam organization, is a leading provider of comprehensive software solutions tailored for the print and mail industry, focusing on streamlining operations, boosting profitability, and enhancing workflow efficiency. Seeking a Senior Software Developer to modernize existing C++ desktop application by migrating functionality to web-based .NET solution. The developer will also support the evaluation and integration of AI capabilities into applications and business workflows to improve efficiency, automation, and overall business value.

Primary Responsibilities:

Designing and Developing Applications Collaborate with cross-functional teams to analyze requirements, design solutions, and develop robust software applications using .NET, C++, and C#. Participate in code reviews and identifying code refactoring candidates. Evaluate opportunities to incorporate AI capabilities into applications to enhance functionality, improve user experience, and streamline business processes. Coding and Debugging Write clean, scalable code following best practices and standards in software development. Use OOP techniques, such as dependency injection, to produce scalable code. Debug and resolve technical issues in a timely manner. Identify and resolve performance issues. Leverage AI assisted development tools, such as Claude, to improve coding productivity and accelerate debugging and documentation, while validiation outputs for accuracy, security and quality. Testing and Deployment Perform unit testing and integration testing for functionality and limits. Support deployment of applications and evaluate their performance. Help implement appropriate testing, monitoring, and validation practices for AI integrations. Maintenance and Support Provide ongoing maintenance, support, and enhancements in existing systems and platforms. Investigate and resolve technical issues and ensure smooth operation of applications. Collaboration and Communication Collaborate with product, QA and other stakeholders to gather requirements, understand business needs, and translate them into technical solutions. Communicate technical approaches, implementation considerations, and potential risks associated with AI solutions.

Skills & Competencies:

Experience with

C++, ASP.NET

Core, Web APIs, JavaScript/TypeScript, and modern web frameworks. Experience with back end RESTful APIs. Knowledge of security best practices such as OWASP Familiarity with Microsoft Azure Exceptional analytical and problem-solving skills. Excellent verbal and written communication skills Highly motivated with the ability to work well independently and in a team environment. Development of maintainable code from written requirements using industry standards. Organized and task oriented and able to meet deadlines in a fast-paced environment. Ability to maintain productivity, communication, and collaboration while working remotely. Includes proficiency in remote tools (Teams, etc.), time management, and self-discipline. Experience as an AI Engineer a plus

Minimum Qualifications:

Bachelor's Degree in computer science, Software Engineering or equivalent. 5+ years of full stack development experience. 5+ years experience in C#, .NET web sites and object oriented programming. 5+ years experience in SQL Server or similar RDBMS. Experience with microservice architecture Basic understanding of AI technologies, including generative AI, large language models (LLMs), or AI service APIs, with the ability to support integration into software applications. Strong analytical, problem-solving, communication, and collaboration skills.

Salary Range:

$90,000 - $120,000 USD Fullsteam supports an inclusive workplace that values diversity of thought, experience, and background. Fullsteam is an Equal Opportunity/Affirmative Action employer. All qualified applicants will receive consideration for employment without regard to race, religion, color, national origin, ancestry, age, physical or mental disability, sex, sexual orientation, gender identity/expression, pregnancy, veteran status, marital status, creed, status with regard to public assistance, genetic status or any other status protected by federal, state, or local law. Read Full Description Skills Required Bachelor's degree in computer science, software engineering, or equivalent 5+ years of full-stack development experience 5+ years of experience with C#, .NET websites, and object-oriented programming 5+ years of experience with SQL Server or a similar relational database management system Experience with microservice architecture Basic understanding of AI technologies, including generative AI, large language models, or AI service APIs Experience with C++ Experience with ASP.NET Core, Web APIs, JavaScript or TypeScript, and modern web frameworks Experience with back-end RESTful APIs Knowledge of security best practices such as OWASP Familiarity with Microsoft Azure Strong analytical and problem-solving skills Strong verbal and written communication skills Ability to work independently and collaboratively in a team environment Ability to develop maintainable code from written requirements using industry standards Ability to meet deadlines in a fast-paced environment Ability to work productively and collaboratively remotely using remote tools such as Microsoft Teams Experience as an AI engineer Fullsteam Compensation & Benefits Highlights The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Fullsteam and has not been reviewed or approved by Fullsteam. About This Summary Leave & Time Off Breadth — Flexible PTO, paid company holidays, and paid parental leave are part of the package. Feedback suggests time-away flexibility is a notable plus alongside remote options. Retirement Support — A retirement savings plan includes a company match, complemented by role-dependent short- and long-term incentives. Feedback suggests this foundation supports longer-term financial security. Healthcare Strength — Medical, dental, and vision coverage are offered with HSA/FSA options, company-paid life insurance, and support services such as an EAP and Health Advocate. Feedback suggests the core health benefits cover essential needs. Learn more about Fullsteam's Compensation & Benefits → Fullsteam Insights What's It Like to Work at Fullsteam? Fullsteam Culture & Values Fullsteam Career Growth & Development What's the Work-Life Balance Like at Fullsteam? Fullsteam Leadership & Management Fullsteam Company Growth, Stability & Outlook View all jobs at Fullsteam View Fullsteam Profile Report Job