Applications Engineer - Principal
Macom
Lowell, MA · Posted September 10, 2026
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Where Lowell, MA ranks
Where Lowell, MA placed in our monthly rankings, month by month. Each month stays online at its own address.
November 2026
- #3Best cities for mid-career professionals in New England57% · of 28
- #5Cities with the most hybrid jobs in New England19% · of 27
- #9Best cities for AI-skill jobs in New England12% · of 28
- #9Best cities for mid-career professionals in the Northeast57% · of 70
- #12Cities with the most hybrid jobs in the Northeast19% · of 69
- #13Best cities for AI-skill jobs in the Northeast12% · of 70
Rankings about engineering jobs
- Best cities for software and engineering jobs #1 San Francisco (3,412 openings)
- Best cities for engineering pay after cost of living #1 San Mateo ($216k)
- Most requested AI skills in engineering jobs #1 AI tools in daily work (6.1%)
- AI tools named most often in engineering jobs #1 Claude (1.7%)
- Employers with the most engineering jobs #1 Amazon (2,992 roles)
How AI is used in this kind of work
AI use among mechanical engineers is little observed so far. Measured exposure for mechanical engineers: 8% (little observed).
Share of this job’s tasks that AI is already used for at work, from real usage. It is not a forecast of job loss, and a low number means no use seen yet. Source: Anthropic Economic Index.
About the job
Applications Engineer - Principal Description : A Principal Applications Engineer is a critical team member responsible for the support of a diverse portfolio of TIA and Driver semiconductor devices targeting high speed applications (operating from 10 – 1000 Gbps). The Principal Applications Engineer’s primary role is to evaluate the devices designed by our world class team and engage with customers to integrate these devices into their systems. Duties would include RF testing of devices using a PNA (high frequency test equipment), designing custom high-performance hardware, producing application notes and data sheets, and providing direct technical support to our customers. To accomplish these tasks, the Principal Applications Engineer will interact closely with Design Engineering, Test Engineering, Field Applications Engineering (domestic and international), Marketing, and other teams to analyze and resolve technical issues at every point of product development process. You will work with local and offshore applications and sales teams with a strong focus on maximizing revenue and capturing design slots. A strong RF and Microwave test background and the ability to collaborate and communicate effectively with multiple engineering, marketing, and sales groups at different geographical locations worldwide are essential to the success of this position. This individual should be a self-starter and be able to independently (or manage team resources) to solve customer’s technical problems. Specific Responsibilities: 40 - 110 GHz Probe testing using a PNA Design and Build supporting hardware for MACOM products using RF, Microwave, High Speed Electrical, Signal Integrity, skills such as evaluation systems, reference designs, applications boards. Generate Application Notes, Data sheets, other supporting documents Creative, Strong, Mature team player who knows how to leverage all the different expertise in the team to resolve technical problems