Senior Software Engineer

Interstate Waste Services • Teaneck, NJ

2d • Onsite

About The Position

Interstate Waste Services (IWS) is a leading provider of solid waste and recycling services in the New York, New Jersey, and Connecticut markets, operating a rail-served landfill in Ohio. IWS is dedicated to delivering high-quality waste, recycling, and environmental services while prioritizing the safety of its employees, customers, and communities. Serving a diverse clientele including industrial, medical, and commercial/residential customers, IWS was founded in 1998 and has expanded through acquisitions, integrating family-owned businesses into its team. The company prides itself on combining the resources of a large organization with the values of a family-run business.

Requirements

• Minimum of five (5) years of experience in a developer role in a full stack environment.
• Robust experience with C# programming and .Net 8+.
• Knowledge of SQL queries, SQL Server, and relational database technology.
• Experience with REST API development, integration knowledge, and middleware integration expertise.
• Experience developing critical applications with large concurrent user bases from a performance and scalability standpoint.
• Experience with Azure cloud services.
• Must have experience in the analysis, design, development, testing, and implementation of enterprise-scale applications.
• Ability to handle change, multitask, and keep up with a fast-paced and consistently growing environment.
• Strong problem-solving and creative skills and the ability to exercise sound judgment and make decisions based on accurate and timely analyses.
• Requirement gathering and documentation experience.
• Ability to work closely with business stakeholders and work towards the solutioning of requirements.
• Effective written and verbal communication.

Nice To Haves

• Experience with Blazor.
• Experience with CI/CD pipelines and Azure DevOps.
• Experience with finance and payment solutions.
• Experience with mobile app development.
• Experience developing or maintaining customer-facing hybrid web applications.

Responsibilities

• Design, develop, test, implement, and maintain business-critical applications and workflows using Microsoft .NET technologies.
• Analyze user and business requirements to define technical specifications and scalable solution designs.
• Translate functional requirements into intuitive, efficient, and maintainable application workflows.
• Develop and maintain RESTful APIs and lead integrations across internal and SaaS platforms.
• Write, optimize, and maintain SQL queries, stored procedures, and relational database structures.
• Create and maintain system design documentation, technical specifications, and architectural diagrams.
• Review peer code, architecture, and documentation to ensure quality and adherence to standards.
• Contribute to development standards including source control, CI/CD, deployment, and environment management.
• Support performance tuning and scalability initiatives for high-concurrency applications.
• Assist in maintaining technical artifacts such as data dictionaries and application catalogs.
• Collaborate cross-functionally with IT and business stakeholders to deliver effective solutions.
• Monitor emerging technologies and recommend improvements to enhance performance and usability.
• Maintain detailed documentation and prepare release notes for enhancements.
• Participate in critical decisions related to architecture, integrations, and software selection.

Benefits

• Equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state or local laws.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Education Level: No Education Listed