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Signal Machine Jobs in Tennessee (NOW HIRING)

Bespoke Labs

Machine Learning Engineer

Chattanooga, TN · On-site

This means designing observation spaces, action spaces, reward signals, and success criteria for new environments -- and building the infrastructure that makes world-scale RL training possible. This ...

Mueller Water Products, Inc.

Pre-Apprentice Machinist

Kimball, TN · On-site

$16.25 - $20.75/hr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Develops skills in machine maintenance by assisting machinists in regular upkeep and basic preventative maintenance of machines. * Signals issues or irregularities to appropriate machinist, team lead ...

Mueller Water Products, Inc.

Pre-Apprentice Machinist

Kimball, TN · On-site

$16.25 - $20.75/hr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Develops skills in machine maintenance by assisting machinists in regular upkeep and basic preventative maintenance of machines. * Signals issues or irregularities to appropriate machinist, team lead ...

Mueller Water Products, Inc.

Pre-Apprentice Machinist

Kimball, TN · On-site

$16.25 - $20.75/hr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Develops skills in machine maintenance by assisting machinists in regular upkeep and basic preventative maintenance of machines. * Signals issues or irregularities to appropriate machinist, team lead ...

Mueller Water Products

Pre-Apprentice Machinist

Kimball, TN · On-site

$16.25 - $20.75/hr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Develops skills in machine maintenance by assisting machinists in regular upkeep and basic preventative maintenance of machines. * Signals issues or irregularities to appropriate machinist, team lead ...

Mueller Water Products

Pre-Apprentice Machinist

Kimball, TN · On-site

$16.25 - $20.75/hr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Develops skills in machine maintenance by assisting machinists in regular upkeep and basic preventative maintenance of machines. * Signals issues or irregularities to appropriate machinist, team lead ...

Mueller Water Products

Pre-Apprentice Machinist

Kimball, TN · On-site

$16.25 - $20.75/hr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Develops skills in machine maintenance by assisting machinists in regular upkeep and basic preventative maintenance of machines. * Signals issues or irregularities to appropriate machinist, team lead ...

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Showing results 21-40

All JobsSignal Machine JobsSignal Machine Jobs in Tennessee

Signal Machine information

See Tennessee salary details

$11

$16

$21

How much do signal machine jobs pay per hour?

As of Aug 18, 2026, the average hourly pay for signal machine in Tennessee is $16.73, according to ZipRecruiter salary data. Most workers in this role earn between $14.86 and $18.12 per hour, depending on experience, location, and employer.

What is a signal machine?

A Signal Machine, often referred to as a railroad signal maintainer, is a professional responsible for installing, inspecting, maintaining, and repairing signal systems used by railroads to control train movements. These systems include signals, switches, and related electronic and mechanical equipment that ensure the safe and efficient operation of trains. Signal Machines play a crucial role in preventing accidents by making sure all signaling equipment functions correctly. The job often requires working outdoors, sometimes in adverse weather conditions, and may involve irregular hours, including nights and weekends.

What are the typical daily responsibilities of a signal machine operator and how do they contribute to railway safety?

As a Signal Machine Operator, your daily responsibilities include monitoring and controlling railway signal systems, inspecting mechanical and electronic signal equipment, and promptly addressing any malfunctions. You will work closely with train dispatchers and maintenance crews to ensure signals accurately reflect track conditions, which is critical for preventing accidents and maintaining smooth rail operations. This role requires strong attention to detail, quick decision-making, and a commitment to safety protocols, as your work directly impacts the efficiency and safety of railway transportation.

What are the key skills and qualifications needed to thrive as a signal maintainer, and why are they important?

To thrive as a Signal Maintainer, you need a strong understanding of electrical systems, mechanical aptitude, and a high school diploma or equivalent, often supplemented by technical training. Familiarity with signal testing equipment, wiring diagrams, and industry safety standards is essential, with certifications from organizations like the Federal Railroad Administration (FRA) often required. Attention to detail, problem-solving abilities, and effective communication are key soft skills that enhance job performance. These skills and qualifications are vital to ensure the safe, reliable operation of railway signaling systems and prevent accidents.

What is the difference between Signal Machine vs Signal Technician?

AspectSignal MachineSignal Technician
Required CredentialsTechnical training, certifications in signal systemsTechnical training, certifications in signal systems
Work EnvironmentOperating and maintaining signal machinery, industrial settingsInstalling, troubleshooting, and repairing signal systems
Industry UsageRailways, transportation, industrial automationRailways, transportation, infrastructure projects

While both roles involve working with signal systems, a Signal Machine primarily focuses on operating and maintaining signal machinery, whereas a Signal Technician handles installation, troubleshooting, and repairs of signal systems. Both require similar certifications and work in related environments, but their daily tasks differ based on their specific responsibilities within the industry.

What are popular job titles related to Signal Machine jobs in Tennessee?

For Signal Machine jobs in Tennessee, the most frequently searched job titles are:

What job categories do people searching Signal Machine jobs in Tennessee look for?

The top searched job categories for Signal Machine jobs in Tennessee are:

What cities in Tennessee are hiring for Signal Machine jobs?

Cities in Tennessee with the most Signal Machine job openings:

Signal Machine jobs near you
Infographic showing various Signal Machine job openings in Tennessee as of August 2026, with employment types broken down into 86% Full Time, 9% Part Time, 1% Temporary, 2% Contract, and 2% Nights. Highlights an 93% Physical, 1% Hybrid, and 6% Remote job distribution, with an average salary of $34,805 per year, or $16.7 per hour.

Machine Learning Engineer

Bespoke Labs

Chattanooga, TN • On-site

Full-time

Re-posted yesterday

Job description

About Us

We are AI researchers and builders who understand how to curate data and RL environments that truly improve models. We curated OpenThoughts, one of the best open reasoning datasets, and have trained SOTA models such as Bespoke-MiniCheck and Bespoke-MiniChart.

We are embarked on a journey to build Environments that are entire digital worlds that can be used to push the frontier of agents.

What You'll Be Working On

You will work directly with our research team on RL environment and task creation for agent training. This means designing observation spaces, action spaces, reward signals, and success criteria for new environments — and building the infrastructure that makes world-scale RL training possible. This is a high-ownership role; you will be building novel systems, not maintaining legacy ones.

Must-Have Skills

3+ years of ML engineering experience — model training, fine-tuning, or post-training pipelines in research or production

Strong Python and deep learning proficiency (PyTorch preferred; familiar with training loops, optimizers, mixed precision)

Hands-on experience with LLM post-training — SFT, RLHF, PPO, DPO, or reward model training — and understanding of how training data quality affects model behavior

Familiarity with RL frameworks (Gymnasium, dm_env) and the ability to design or modify reward functions for agent training objectives

Experience running experiments at scale on cloud or HPC (AWS, GCP, SLURM, or Ray)

Solid understanding of evaluation methodology — held-out sets, benchmark design, avoiding train/eval contamination

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