Jobs at John C. Cassidy Air Conditioning and Plumbing, Inc.

This Software Engineer role within the Silicon Validation team focuses on system-level stress validation for next-generation SoCs. The position involves diving deep into SoC architecture to exercise interactions between IP blocks and developing comprehensive testing strategies for stress and corner-case scenarios. Key responsibilities include writing C/C++ and assembly code close to the hardware, debugging complex issues, and utilizing scripting languages to automate validation processes. The role appeals to candidates passionate about hardware-software integration and offers the opportunity to work with a diverse team of subject matter experts on products reaching millions of users. The position requires a background in computer or electrical engineering and is ideal for those who enjoy a detail-oriented, persistent approach to ensuring high-quality functional products.

This full-time Lead Software Engineer role is based in Newark, Delaware, within Hologic's medical device division, focusing on breast and skeletal health solutions. The position involves leading the design, development, and documentation of safety-critical software for clinical and internal users using C#, WPF, and .NET. Key responsibilities include writing and testing regulated code, mentoring junior engineers, driving Agile process improvements, and collaborating with cross-functional teams to ensure regulatory compliance. The role appeals to candidates seeking to build life-changing products while fostering a high-performing team culture. Hologic supports professional growth through comprehensive training and development opportunities. The work arrangement is hybrid, combining on-site collaboration with remote flexibility.

This entry-level seasonal role within the Maine Department of Transportation's Maintenance and Operations team focuses on keeping roadways and bridges safe across Southern Maine. The position involves performing diverse physical tasks such as road repair, culvert replacement, and snow plowing, adapting to seasonal demands while ensuring public safety. Key responsibilities include operating heavy machinery, obtaining necessary commercial driving licenses, and maintaining equipment in all weather conditions. The role is appealing for its emphasis on career growth, offering paid training for commercial driving and snowfighting with automatic promotional opportunities. Employees benefit from a supportive culture that prioritizes work-life balance through generous paid time off, comprehensive health and dental coverage, and a strong retirement contribution. The position is based in Topsham, Maine, and requires flexibility to work outdoors in varying weather conditions.

The Junction Company, a family-owned petroleum business with locations across Mississippi, is seeking a C-Store Cashier to join their team. The role involves providing fast and courteous customer service while managing cash registers and maintaining accurate inventory and pricing. Key responsibilities include ensuring safety compliance, performing housekeeping tasks, stocking merchandise, and operating computer systems with minimal supervision. This position appeals to energetic individuals who enjoy interacting with the public and value a supportive, long-standing company culture. The job requires basic math and communication skills, along with the ability to lift average weights. While experience in retail is preferred, it is not mandatory, and the role offers a stable environment within a business that has operated since the 1960s.

This Electrical Test & Validation Engineer role supports the Engineering department at Advanced Nuclear Energy Technology, focusing on next-generation reactor systems. The position involves creating and executing engineered tests for complex electrical and electro-mechanical systems, developing validation strategies to meet regulatory requirements, and leading the resolution of technical risks. Key duties include collaborating with cross-functional teams to assemble test fixtures and preparing detailed technical reports. The opportunity is appealing for its chance to work on cutting-edge nuclear technology with hands-on involvement in unique testing programs and exposure to advanced automation. The role is based in Wilmington, NC, and offers a collaborative environment with experienced technical experts.

This full-time contract role involves serving as a Senior Software Developer within a large public behavioral health system, focusing on enhancing an enterprise application for case management and operational workflows. Key responsibilities include developing features using C# and ASP.NET, optimizing SQL Server databases, performing unit testing, and collaborating with Agile teams to improve reporting and accounting capabilities. The position is appealing due to the opportunity to make a meaningful impact on critical public health services while working in a primarily remote environment with limited travel requirements. The role offers potential for contract extensions and allows engineers to contribute to modernization efforts within a collaborative, mission-driven organization.

This full-time contract role involves serving as a Senior Software Developer within a large public behavioral health system, focusing on enhancing an enterprise application for case management and operational workflows. Key responsibilities include developing features using C# and ASP.NET, optimizing SQL Server databases, and participating in Agile ceremonies to support system modernization and reporting initiatives. The position offers the appeal of making a meaningful impact on public health services while working in a primarily remote environment with only occasional travel requirements. The role provides opportunities for contract extensions and collaboration with experienced cross-functional teams in a mission-driven organization.

This full-time contract role involves serving as a Senior Software Developer within a large public behavioral health system, focusing on enhancing and maintaining an enterprise application for case management and operations. Key responsibilities include developing features using C# and ASP.NET, optimizing SQL Server databases, and participating in Agile ceremonies to support reporting and accounting workflows. The position offers a primarily remote work arrangement with minimal travel, providing the opportunity to make a meaningful impact on critical public health initiatives while collaborating with experienced cross-functional teams in a modernized technical environment.

This full-time contract role involves serving as a Senior Software Developer within a large public behavioral health system to enhance and maintain an enterprise case management application. Key responsibilities include developing features using C# and ASP.NET, optimizing SQL Server databases, and participating in Agile ceremonies to support reporting and accounting workflows. The position offers the appeal of contributing to meaningful public health initiatives while working in a primarily remote environment with limited travel requirements. The team fosters collaboration across development, QA, and business units, providing opportunities for contract extensions based on performance and project needs.

This full-time contract role involves serving as a Senior Software Developer within a large public behavioral health system, focusing on enhancing and maintaining an enterprise application for case management and operational workflows. Key responsibilities include developing features using C# and ASP.NET, optimizing SQL Server databases, and participating in Agile ceremonies alongside cross-functional teams. The position offers the appeal of contributing to critical public health initiatives while working in a primarily remote environment with only occasional travel requirements. The role provides opportunities for professional growth through system modernization efforts and potential contract extensions based on performance.

This Software Engineer role within the Microsoft Defender team focuses on developing cutting-edge cloud security solutions to protect government environments from advanced cyber threats. The position involves building scalable and highly reliable services, automating features for complex cloud landscapes, and resolving production issues through an on-call rotation. Candidates must hold an active U.S. Government Top Secret clearance with SCI access and a polygraph. The role appeals to engineers seeking to work with state-of-the-art technologies on a global scale while contributing to a culture of inclusion and innovation. The position requires work within a secure facility and is open to U.S. citizens.

This full-time Software Development Engineer role focuses on enhancing the backend systems for Zoom Mail, Calendar, and Scheduler. The position involves designing and implementing features using modern C++ and NoSQL databases, developing secure web server APIs, and optimizing resource efficiency through advanced algorithms. Key responsibilities include troubleshooting production issues, integrating with Kubernetes clusters, and collaborating with DevOps to ensure system reliability and security. The role offers a hybrid work arrangement with flexibility for remote locations within the U.S. and no travel requirements. It appeals to candidates seeking to grow within a collaborative, fast-paced environment dedicated to building a leading enterprise collaboration platform.

This early-career Software Engineer role within Johnson & Johnson's Surgery division focuses on enhancing the cybersecurity of medical products in Santa Clara, California. The position involves designing and implementing software security controls, defining cybersecurity requirements, and conducting code and design reviews with a security focus. Key duties include performing risk assessments to identify vulnerabilities, developing mitigation strategies, and building C++ applications in a regulated Linux environment. The role appeals to candidates passionate about applying technology to improve patient outcomes through smarter surgical solutions. It offers the opportunity to collaborate with cross-functional teams in a hybrid work arrangement, with occasional travel required, within a culture dedicated to healthcare innovation and global impact.

This onsite Software Engineer III role within HPE Networking focuses on developing embedded software and firmware for next-generation Juniper routing platforms. The position involves designing and validating system-level code for Network Processors and ASICs, writing functional specifications, and resolving complex defects in a fast-paced environment. Key responsibilities include collaborating with hardware and systems teams to bring up new hardware and contributing to the full software development lifecycle. The role appeals to engineers passionate about the hardware-software interface, offering opportunities to work with cutting-edge silicon and high-speed interfaces. HPE supports professional growth through dedicated development programs and fosters an inclusive culture that values diverse backgrounds and flexible work management.

This hybrid Engineering Principal role focuses on designing and implementing advanced RF test software systems for critical defense electronics. The position involves leading the development of automation tools for validating complex semiconductor die, utilizing programming languages like VB.NET, C++, and Python alongside RF test equipment such as spectrum analyzers and wafer probers. Key responsibilities include managing on-wafer measurements, ensuring signal processing accuracy, and guiding cross-functional teams to solve technical challenges. The role appeals to candidates seeking to contribute to national security missions that protect those who protect us, offering a collaborative environment with opportunities for professional growth and the chance to work on cutting-edge technology spanning air, land, sea, and space.

This onsite Principal Software Engineer role at Hewlett Packard Enterprise focuses on embedded systems for next-generation networking platforms within the HPE-Juniper team. The position involves designing and developing complex platform software and firmware for network processors and ASICs, writing test specifications, and resolving defects across the full development lifecycle. Key responsibilities include collaborating with hardware and systems teams to bring up new hardware and ensuring robust device driver performance in Linux environments. The role appeals to candidates seeking to work at the hardware-software interface layer for high-scale routing solutions. It offers a culture that values varied backgrounds, supports professional growth through dedicated development programs, and provides flexibility to manage work and personal needs while contributing to global edge-to-cloud innovation.

This onsite Senior Embedded Software Engineer role is based in Tucson, Arizona, within the Effectors Center of the Software organization at a leading aerospace and defense company. The position focuses on architecting, designing, and debugging real-time embedded software for autonomous avionics systems, integrating firmware and hardware solutions. Key responsibilities include collaborating with cross-discipline teams using Agile practices, mentoring junior engineers, and contributing to critical design reviews. The role appeals to candidates seeking to solve complex engineering challenges in a mission-driven environment that values safety, innovation, and collaboration. Opportunities for professional growth include working across product lines and receiving training in advanced embedded technologies. A current or obtainable U.S. government security clearance and U.S. citizenship are mandatory requirements for this onsite position.

This onsite RF Test Systems Engineer II role is based in McKinney, Texas, within the Test Equipment Engineering directorate at Raytheon. The position focuses on designing, developing, and validating test hardware and software solutions for production programs. Key responsibilities include automating RF test equipment control, creating test plans using NI Test Suite, and collaborating with cross-functional teams to integrate test systems. The role appeals to engineers seeking to contribute to national defense missions while working in a culture that prioritizes safety, innovation, and collaboration. Candidates must hold U.S. citizenship and possess an active or transferable Secret security clearance. The position requires full-time on-site presence to support critical lab and factory testing environments.

This full-time Embedded Software Engineer role within Northrop Grumman Mission Systems focuses on developing and maintaining test software for Radio Frequency production hardware in Rolling Meadows, Illinois. The position involves designing test procedures, troubleshooting software and hardware discrepancies, and collaborating with cross-functional teams to ensure quality acceptance testing for military-grade electronic warfare systems. Key responsibilities include updating test equipment software, performing environmental screening, and driving continuous improvement initiatives to reduce defects and cycle time. The role appeals to innovative problem solvers seeking to work on revolutionary defense technologies in a culture that values intellectual curiosity and resilience. While the position is primarily on-site, it includes approximately 10% travel. The company offers a comprehensive benefits package, professional development opportunities, and flexible scheduling options such as a 9/80 work schedule.

This full-time Senior Tax Manager role supports the High Net Worth practice within a top-ranked New England CPA firm. The position involves providing strategic tax planning for wealthy individuals and private entities, reviewing complex estate and fiduciary returns, and representing clients during audits. Key responsibilities include leading and mentoring a high-performing team, driving business development, and managing multiple engagements with a focus on quality and compliance. The role offers a flexible hybrid work arrangement across four office locations and is appealing due to the firm's recognition as a Best Place to Work for 19 years, a collaborative culture, and opportunities for professional growth through in-house education and community involvement.

This full-time Software Engineer role is part of the Agile team at Lockheed Martin's Rotary & Mission Systems division, focusing on developing real-time processing solutions for advanced radar and missile defense technologies. The position involves translating complex requirements into robust architectures, writing high-quality C++ code, and creating comprehensive unit tests within a Linux environment. Key responsibilities include collaborating with multidisciplinary experts, utilizing Agile methodologies, and managing configuration tools like Git and JIRA. The role offers the appeal of working on mission-critical systems that enhance global security alongside a global community of engineers. It requires a U.S. DoD Security Clearance at the SECRET level and is based at a facility in New Jersey.

This full-time delivery role involves operating box trucks to transport wholesale goods to convenience stores and restaurants across Los Angeles, Orange, and San Bernardino counties. The position requires safely loading orders, performing vehicle inspections, and utilizing technology tools to manage deliveries. The role is based in Commerce, CA, with a schedule running Tuesday through Saturday and consistent overtime opportunities. The position appeals to candidates seeking a supportive culture that values integrity and character, offering health benefits, a 401K plan, and a performance bonus. The team emphasizes a respectful environment where drivers are treated with dignity while helping small business owners thrive.