Senior Application Developer

About Footprint Solutions: Footprint Solutions delivers comprehensive in-store merchandising, installations, signage, rollouts, remodels, and reporting solutions. We partner with our clients from concept through execution, offering a one-stop end-to-end service. As we modernize and scale our internal systems, we’re seeking a technical leader to help drive our next generation of business applications.

Job Summary: As a Senior Application Developer / Technical Lead, you will be a key driver in architecting, designing, and implementing robust enterprise applications (both internal and client- facing). You’ll work across the full lifecycle—requirements, design, coding, testing, deployment, monitoring—and guide modernization of legacy systems. You will lead, by example, mentor junior team members, and partner with stakeholders to deliver scalable, secure, high-performance solutions.

What You'll Do (Responsibilities)

• Collaborate with business stakeholders, analysts, and leadership to define technical strategy, roadmap, and architecture
• Execute full software development lifecycle: requirements gathering, solution design, coding, testing, deployment, and support
• Architect and build scalable, maintainable, and high-availability systems
• Develop front-end / UI capabilities using C# / Blazor / .NET Framework
• Develop back-end services using C#, .NET 6 , Web API and data access using EF Core
• Complete database design, object creation, performance tuning/optimization, and heavy T- SQL query / stored procedure construction using MS SQL Server
• Administer MS SQL Server databases, performing routine tasks such as backups and restores
• Construct reports using SSRS and Report Builder
• Maintain, monitor, troubleshoot, and enhance a wide range of legacy systems and reports
• Integrate with third-party systems, external APIs, messaging systems, and middleware
• Refactor, modernize, and migrate legacy tools and systems (e.g., migrating older VB/COM and .NET Framework assets to newer platforms)
• Monitor, troubleshoot, and optimize system performance, latency, memory usage, and scalability
• Implement logging, telemetry, diagnostics, alerting
• Enforce security best practices
• Mentor and coach mid- and junior-level engineers
• Provide cross-team support, participate in on-call rotation, and backup for peer systems as needed
• Job Summary Maintain up-to-date technical documentation and ensure knowledge transfer to the team

Required (Essential) Qualifications & Skills

• Bachelor’s degree in computer science, Information Systems, or equivalent technical field (or equivalent experience)
• 5 years of professional software development experience with Microsoft / .NET stack
• Proven record in architecting and implementing end-to-end enterprise systems
• Strong experience with C#, Blazor, .NET 6 , ASP.NET, .NET Framework, HTML, XML, JSON
• Strong experience with MS SQL Server (schema design, T-SQL, performance tuning)
• Experience with MS SQL Server database administration tasks
• Excellent problem-solving, diagnostic, and debugging skills
• Experience with RESTful APIs / Web API / Web Services
• Experience with ORM / data-access patterns (EF Core, LINQ)
• Experience with source control systems TFS / Git
• Legacy system modernization (e.g., VB6, COM, classic ASP, VB.NET, .NET Framework)
• Strong verbal and written communication skills; ability to present to technical & non- technical audiences
• Ability to work independently, take ownership, and drive projects to completion
• Comfortable adapting to new tools and platforms as needed
• Ability to lead, mentor, and conduct code reviews

Preferred / Nice-to-Have Skills

• Experience with .NET MAUI (Xamarin) or cross-platform mobile development
• Familiarity with front-end technologies (e.g., JavaScript or SPA frameworks)
• Experience with Great Plains
• Experience in building AI-driven features or leveraging AI tools to accelerate development
• Experience with Unitrends for database backups
• Expertise in Azure services (e.g., Functions, Service Bus, Logic Apps, Cosmos DB) or AWS equivalents
• Experience with Agile / Scrum methodologies
• Experience with CI/CD pipelines and tooling (Azure DevOps, GitHub Actions)
• Domain experience in retail, merchandising, supply chain, POS systems

Working Conditions & Notes

• Role is primarily hybrid / remote but flexibility for 1 or 2 days per week in the Lisle, IL office is mandatory for Illinois residents. This can be discussed.
• On-call rotation / after-hours support required on a scheduled basis
• Occasional lifting (up to 20 lbs.) may be needed (e.g., project equipment)
• Business-casual dress code; collaborative, fast-paced work environment

What We Offer

• Competitive salary (range commensurate with experience $115,000/yr - $130,000/yr.) performance bonus
• Comprehensive benefits package (health, dental, vision, 401(k), etc.)
• Professional growth: training, conferences, technology roadmap involvement
• Mentorship culture, collaboration, innovation-driven environment
• Equal opportunity employer: we welcome diversity in all forms Business Casual, Casual, Comfortable working environment.

Salary Range: $115,000 - $130,000 per year

The above statements are intended to describe the general nature and level of work being performed by individuals