Contract Mechanical Software Engineer Jobs in Indiana

Location: Indianapolis, In | Schedule: Mon to Fri; 9am to 5pm | Payrate: $76.62/hour

Are you passionate about embedded systems and wireless technologies? PDS Tech Commercial is seeking an Embedded Software Engineer to help develop next-generation connected HVAC products that are smarter, more secure, and more efficient.

In this role, you'll design, develop, and optimize embedded firmware for advanced HVAC systems, collaborating with cross-functional engineering teams to deliver reliable, high-performance solutions from concept through production.

• Design, develop, and maintain embedded software for ARM Cortex-M-based systems.

• Develop bare-metal and RTOS-based firmware using Embedded C.

• Implement and optimize drivers for peripherals including UART, SPI, I2C, GPIO, DMA, timers, and watchdogs.

• Design bootloaders, firmware update mechanisms, and low-power embedded applications.

• Develop and support wireless communication solutions, including Z-Wave, mesh networking, and proprietary sub-GHz protocols.

• Collaborate with hardware engineers to integrate firmware with embedded hardware platforms.

• Debug, troubleshoot, and validate embedded systems using J-Link, SWD, GDB, and other development tools.

• Contribute to secure firmware design, OTA updates, and product reliability.

• Participate in code reviews, documentation, and continuous improvement initiatives.

• Bachelor's degree in Computer Engineering, Electrical Engineering, Computer Science, or a related field (or equivalent experience)

• Strong experience developing embedded software in Embedded C

• Experience with ARM Cortex-M microcontrollers and bare-metal and/or RTOS-based firmware

• Proficiency with interrupt-driven architectures and embedded peripherals (UART, SPI, I2C, GPIO, DMA, timers, watchdogs)

• Experience developing bootloaders, firmware update systems, and low-power embedded applications

• Experience debugging embedded systems using J-Link, SWD, GDB, or similar tools

• Strong communication skills with the ability to work independently and collaborate with hardware engineering teams

• Experience with Silicon Labs EFR32, Gecko SDK, Simplicity Studio, or Silicon Labs wireless stack APIs

• Hands-on experience with Z-Wave, proprietary sub-GHz protocols, mesh networking, or low-power wireless sensor networks

• Knowledge of secure boot, firmware signing, encrypted OTA updates, secure pairing, and embedded security best practices

• Experience with modular firmware architecture, state-machine design, Git, CI/CD pipelines, and automated testing

• Familiarity with RF concepts, including antenna performance, RF optimization, EMC/EMI troubleshooting, and wireless certification

• Experience supporting smart home, HVAC, industrial, or connected IoT products

If you're ready to build secure, connected embedded solutions and work on cutting-edge HVAC technology, apply today and take the next step in your engineering career with PDS Tech Commercial.

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Massachusetts Candidates Only: It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.

Every year, PDS Tech Commercial and PDS Defense place thousands of skilled trades and engineering associates into roles all across the nation. Since our founding in 1977, we have maintained the highest standard of service and satisfaction among both talent and clients.

Today, we continue to deliver exceptional services as a proud member of The Adecco Group (TAG) family, a leading global workforce solutions provider. What does this mean for you? We are united by a powerful mission: making the future work for everyone. We offer our local experience paired with global resources, bringing significant advantages to all our areas of expertise. From end-to-end digital recruitment to priority redeployment and beyond, we are committed to building a better world of work for all.